Browse Topic: Engine lubrication systems

Items (316)
With all the environmental concern of diesel fuelled vehicle, it is a challenge to phase out them completely specifically from Heavy duty application. Most pragmatic solution lies in solutions which improves the fuel economy and reduce the carbon emission of existing diesel fuelled vehicle fleet and retain the economic feasibility offered by present diesel fuelled vehicle fleets. With implementation of Bharat Stage IV (BS VI) emission norms across country from April 2020, supply of BS VI complaint diesel fuel started and BS VI complaint vehicles with upgraded engine technologies and after treatment devices started to come which made present vehicle fleets heterogeneous with substantive number of BS IV vehicle. Beside improvement of engine technologies, existing BS IV vehicle fleet performance can be enhanced through improved fuel and lubricants solutions. The present research work is a step towards improving the fuel economy of existing BS IV diesel vehicles through the intervention of
Mishra, Sumit KumarSingh, Punit KumarChakradhar, MayaSeth, SaritaSingh, SauhardArora, AjayHarinarain, Ajay KumarMaheshwari, Mukul
This specification covers a fluorocarbon (FKM) rubber in the form of O-rings, O-ring cord, compression seals, and molded-in-place gaskets for aeronautical and aerospace applications
AMS CE Elastomers Committee
The On-Board Diagnostics (OBD) system can detect problems with the vehicle’s engine, transmission, and emissions control systems to generate error codes that can pinpoint the source of the problem. However, there are several wear and tear parts (air filter, oil filter, batteries, engine oil, belt/chain, clutch, gear tooth) that are not diagnosed but replaced often or periodically in motorcycles/ power sports applications. Traditionally there is a lack of availability of in-field and on-board assistive tools to diagnose vehicle health for 2wheelers. An alert system that informs the riders about health and remaining useful life of their motorcycle can help schedule part replacements, ensuring they are always trip-ready and have a stress-free ownership and service experience. This information can also aid in the correct assessment during warranty claims. With the increase of onboard sensors on vehicles, there has been a notable increase in the availability of condition-monitoring data
Vijaykumar, SrikanthSabu, AbhijithPRADHAN, DEBAYANShrivardhankar, Yash
This specification covers a fluorocarbon (FKM) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. For molded rings, compression seals, molded O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications, use the AMS7276 specification
AMS CE Elastomers Committee
Using ammonia as a fuel has been experimented since the nineteenth century in different types of ground and air vehicles but it was never able to replace fossil- based hydrocarbon fuels at scale. Nevertheless, this concept has gained a new momentum following recent policies to significantly reduce greenhouse gas emissions in fuel intensive sectors such as power generation and transportation. Following the strategy of the International Maritime Organization (IMO) to reduce the carbon intensity from international shipping by at least 50 percent by 2050, the implementation of zero-carbon fuels on a tank to wake basis, such as ammonia, is being strongly considered by the maritime ecosystem. Additionally, initiatives from other industries have emerged recently, demonstrating a broader interest in ammonia fuel for sustainable operations such as heavy duty and off-road applications. Whereas its toxicity and handling protocols fuel numerous discussions and working groups, ammonia reactivity
Obrecht, NicolasGriffaton, BrunoRappo, Maria
Lubrication has been a major area of interest in engineering. Especially in vehicle transmissions, lubrication plays a very crucial role because gears and bearings are constantly subjected to heavy loads. Proper lubrication is essential for maintaining system performance and ensuring endurance life. Insufficient lubrication can lead to excessive wear, increased friction, and eventually, failures in the transmission components. However, excess lubrication can result in power losses due to the resistance offered by the excessive lubricant. Therefore, achieving effective lubrication using optimized lubrication system design is vital for ensuring the longevity and efficiency of the transmission system. Majorly, two types of lubrication methods are used in transmissions: splash lubrication and forced lubrication. This article focuses on forced lubrication, where the lubrication system actively delivers the required flow of lubricant to specific locations within the transmission. Pump
Shamini, R.Jadhav, PriyankaDeshpande, ShrikrishnaChavan, Sagar
Assessing the functional quality of an engine lubricant through real-time sensing could pave the way for development of comprehensive engine health monitoring systems. In this study, a permittivity-based, commercial off-the-shelf (COTS) oil quality sensor was implemented in the lubricant flow of a diesel engine after detailed evaluation on a benchtop test facility. The sensor was mounted on the oil filter housing of the engine in the post-filter oil flow, and its implementation required no modifications to the engine block. Simultaneously, the lubricant flow was visualized by incorporating a novel test cell in the oil flow path. Both the sensor assembly and the flow visualization cell were fully characterized on the benchtop facility prior to implementation on the engine. In these experiments, fresh and used samples of the engine’s recommended oil were tested, and the sensor’s oil quality measurements showed noticeable differences between the engine and benchtop studies, a feature
Schepner, CameronSmith, AdamSchafer, DavidAnilkumar, Amrutur
This method is designed to evaluate the micropitting performance of currently available and future aviation turbine oil formulations. Drawing on previously performed tests documented in AIR6989, the method comprises of three rings rotating against a rotating central roller configuration using the standard, commercially available PCS Instruments Micropitting Rig (MPR). A test profile has been developed between industry and academia that relies on standard, commercially available test specimens
E-34 Propulsion Lubricants Committee
The oil is picked up from the oil sump and transferred to the pump housing via a suction tube at the desired rate. A strainer is fitted to the end of the suction tube to filter out any dust or debris that may be present. Steel tubes and wire mesh strainers are used to make the current suction tube. Suction tube design shouldn't have an excessively long inlet suction that would make the suction tube's pressure insufficient to suck the oil from sump. Additionally, the pump's suction side air leak or low temperature-induced low oil viscosity prevents the pump from priming. This paper will examine suction tube design analysis and compared the development of steel and polymer suction tube concepts. The lightweight polymer suction tube with respect to fluid dynamics aspects is compared with conventional wire mesh. Extreme temperature analysis of polymer suction tubes will be compared to baseline steel tubes for suction flow, the impact of mesh area, pressure drop, and temperature parameters
NALE, ANIKET ARUNMaurya, Rohit KSoma, NagarajuMohammed, Zubair
Hybrid electric vehicles (xHEV) are a critical enabler to fulfil the most recent CO2 and fuel economy requirements in key markets like North America, China, and Europe [1, 2]. Different levels of hybridization exist; the main differentiator is the power of the electric system and battery capacity. Increased electrical power enables the vehicle to run more often in electric mode and recuperate energy from braking, which enhances the saving potential [3]. Mild (MHEV) and plug-in hybrid vehicles (PHEV) impose different duty cycles on the engine compared to a conventional powertrain, potentially altering the degradation mechanisms of the lubricant, and challenging the basis on which the lubricant should be condemned [4]. The biggest concerns are water and fuel dilution [5], which promote corrosion and can form emulsions [6]. This may result in so-called white sludge formation (a thick and creamy emulsion) which can deposit inside the engine on colder surfaces, potentially blocking pipes
Growney, DavidJoedicke, ArndtWilliams, MeganRobin, MathewMainwaring, RobertDavies, Mark
Honda has developed a new hybrid system targeting the C and D segments that aims for the latest environmental performance, high fuel economy, and enhanced acceleration feeling in driving. The new engine to be applied to this new hybrid system has been developed with the goal of expanding the high thermal efficiency range, realizing the latest environmental performance, and high quietness. The new engine has adopted the Atkinson cycle and cooled exhaust gas recirculation (EGR) carried over from the previous model [1], and employed an in-cylinder direct fuel injection system with fuel injection pressure of 35 MPa. The combustion chamber and ports have been newly designed to match the fuel system changes. By realizing high-speed combustion, the engine realized a high compression ratio with the mechanical compression ratio of 13.9. In addition, emission during engine start was suppressed by split injection and optimization of the injection timing to comply with the Super Ultra-Low Emission
Yamaguchi, RyoEgawa, TakeshiUshio, NobuhiroKasajima, YuyaKondo, ToshifumiIkeya, Kenichiro
The Introduction of Corporate Average Fuel Economy (henceforth will be addressed as CAFE) regulations demand suitable technological upgrades to meet the significant increase in targets of vehicle fleet fuel economy. Engine Downsizing and Friction Reduction measures help in getting one step closer to the target. In a Conventional Oil Pump, the pump discharge flow and pressure are a direct function of operating speed. There is no control over lubricant flow which results in increased power and fuel consumption due to its unnecessary pumping characteristics irrespective of the actual engine demand. This paper discusses the introduction of a variable displacement oil pump (henceforth will be addressed as VDOP) that was adapted to a 1.5-liter 3 Cylinder Diesel Engine. This approach helps the system to reduce parasitic losses as the oil flow is regulated based on the mechanical needs of the engine. The flow is regulated with help of a solenoid valve which receives input from the ECU. The
Sithick basha, Abubakkervinaya murthy, VijayendraRengaraj, ChandrasekaranDharan R, BharaniKumar PS, Adm Venkatesh
The fuel economy of the internal combustion engine becomes progressively critical, especially with the stringent standards set by the government. To meet the government norms such as CAFE (Corporate Fuel Average Economy), different technologies are being explored and implemented in internal combustion engines. Several technologies such as variable oil pump, map controlled PCJ (Piston Cooling Jet), variable or switchable water pump & ball bearing turbocharger etc. This study investigates the effectiveness of implementing map-controlled PCJ implemented for a 1.5-litre 3-cylinder diesel engine. PCJ’s are major consumers of oil flow and map-controlled PCJ is used by many OEM’s e.g., Ford EcoSport to reduce the oil pump flow. In map-controlled PCJ, the oil to the PCJ is controlled using a solenoid valve. The solenoid valve can be completely variable or ON/OFF type. In our application, the ON/OFF type solenoid value is used to regulate the oil flow to PCJ. Conventionally, the oil to the PCJ
vinaya murthy, VijayendraSithick basha, AbubakkerDharan R, BharaniRengaraj, ChandrasekaranVIGNESH, A. C.
SEAT Department of SAIC Motor Vehicle Company starts innovatively applying the single motor and P2.5 configuration scheme from EDU G2(Electric Drive Unit Generation 2), which consists of six engine gears and four motor gears. EDU G2 is very compact and adaptable through the coupling design. Gear coupling make the engine and motor coordination limited, so as to the high efficiency zone of the engine and the high efficiency zone of the motor cannot match in some working conditions, which affect the performance of the vehicle. Therefore, SEAT developed the second generation of single-motor plug-in hybrid system EDU G2 Plus EDU G2(Electric Drive Unit Generation 2 Plus), which realized the decoupling design of 5 engine gears and 2 motor gears, so that the power output of engine and motor is freely. With excellent power and economic performance, the vehicle has been well received by customers. The article mainly describes the system design and development on the themes of motor performance
ge, HailongZhao, Zhiguo
This document describes the major techniques for measuring oil consumption. It does not cover all the sub-variations that might be used to make this measurement
Piston and Ring Standards Committee
SAE/USCAR-46 defines test methods and outputs for engine oil pump bench testing. Performance and durability testing are the primary focus of this standard. This is written to specifically address testing of electronically controlled variable displacement pumps but can be adapted to mechanically controlled pumps and other pump technologies as needed. This standard outlines critical inputs and outputs in order to perform the testing and report results, but does not specifically set the acceptance standards or pass/fail criteria. Acceptance criteria must be set by the customer
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The purpose of this SAE Recommended Practice is to establish a testing procedure to determine the performance capability of heavy-duty vehicle cooling systems to meet Original Equipment Manufacturer or end user thermal specifications to ensure long term reliable vehicle operations. The recommendations from the present document are intended for heavy-duty vehicles including, but not limited to, on- and off-highway trucks, buses, cranes, drill rigs, construction, forestry, and agricultural machines
Cooling Systems Standards Committee
This ARP applies to turbine engines that are to be used in helicopters. It provides the engine designer guide lines in achieving a satisfactory turbine engine drive shaft connection
S-12 Powered Lift Propulsion Committee
This SAE Information Report establishes a minimum level of uniform recipes for contaminants which may be used when durability testing pneumatic components to obtain additional information on how a device may perform under more true-to-life operating conditions. This type of contamination testing, however, is not meant to replace the type of performance testing described in SAE J1409 and SAE J1410. Durability testing in the presence of contamination will yield results more reflective of actual in-service field conditions and provide an additional evaluation of pneumatic devices. While the contaminant supply rate and other test criteria of the device being tested must be set by the device manufacturer or user, the items covered in this document will be
Truck and Bus Brake Supply and Control Components Committee
NVH is very important topic in development of a vehicle. Legislative requirements for driver ear level, the comparison to competitor vehicles in terms of noise and vibration as well as sound quality set very challenging targets. High noise at Driver Ear Level (DEL) and tactile vibrations of tractor is the major cause of exhaustion to the operator. With growing competition there is need for the tractor manufacturers to control noise and vibration levels. Recognizing the corrective measures to reduce the noise and vibration has a greater impact in increasing the efficiency of the product and operator comfort. Objective of this paper is to control vehicle level noise and vibrations using vehicle level structure modifications. It includes airborne and structure borne NVH study on a tractor by measuring sound pressure and vibration levels at vehicle level. Single cylinder engine was mounted on light weight structure to meet the power and torque requirements in the tractor. Also, there is no
MENON, VINEETH VENUGOPALTHAKUR, SUNILKunde, SagarWagh, Sachin
Rapidly depleting oil reserves and strict pollution regulations have made it necessary to find a substitute for diesel fuel. In the context of the multi-fuel strategy program, gasoline has improved the fuel availability for both combat and commercial highway vehicles with diesel engines. This study examines the effect of gasoline fuel on the engine wear, performance, and emission of a military, heavy-duty, supercharged diesel engine. In a CIDI diesel engine, the use of Gasoline has been considered to be significantly sustainable with engine performance and reduced pollutants. For this research a military heavy-duty, 38.8 L, 585kW, diesel engine, the EGR technique was used for gasoline and diesel fuels. Furthermore, the impact of nanoparticles on NOx emissions was also explored. NOx emission reduces in diesel engines by using the EGR technique. Two test fuels were tested in their trials for a total of 100 hours of engine endurance assessment. After every 20 hours of engine operation
Pandey, Anand KumarNandgaonkar, MilankumarSonawane, CKumbhar, VishalVarghese, Anil
The techniques outlined in this SAE Recommended Practice were developed as part of an overall program for determining and evaluating fuel consumption of heavy-duty trucks and buses, but it is applicable to off highway vehicles as well. It is recommended that the specific operating conditions be carefully reviewed on the basis of actual installation data. Cooling requirements are affected by all heat exchangers that are cooled by the fan drive system. These may include radiators, condensers, charge air coolers, oil coolers, and others. Because of the variation in size, shape, configuration, and mountings available in cooling fans and fan drive systems, specific test devices have not been included. Using known power/speed relationships for a given fan, this procedure can be used to calculate the fan drive system’s power consumption for cooling systems using the types of drives listed below. This power consumption may then be used in determining engine net power per SAE J1349. For more
Cooling Systems Standards Committee
This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that innovation
This SAE Aerospace Recommended Practice (ARP) provides a guide for the preparation of a helicopter engine/airframe interface document and checklist. This document and checklist should identify the information needed by the engine manufacturer and the aircraft manufacturer to integrate the engine design with the aircraft design and either provide this information or give reference to where this information is located. The intent is to assure that the engine manufacturer and the airframe manufacturer identify and make provision for this information so it can be easily accessible to either manufacturer as needed in the development stages of an engine-airframe integration project. A related document, SAE Aerospace Information Report AIR6181, provides guidance on creating an interface control document (ICD) which addresses a subset of the aircraft-engine interface information concerning the physical and functional interfaces of the electronic engine control system (EECS) with the aircraft
S-12 Powered Lift Propulsion Committee
This SAE Standard covers fuel, oil, or emission hose for use in coupled and uncoupled applications, for use with gasoline, oil, diesel fuel, lubrication oil, or the vapors present in either the fuel system or in the crankcase of internal combustion engines in mobile or stationary applications. This standard covers the hose portion only. If assembly/coupling is required, that is to be agreed to between the customer and assembler, along with the specific requirements
Non-Hydraulic Hose Committee
Due to the advantages of compact structure, stable operation, and low cost, the gerotor pumps are widely used in the cooling and lubricating system of automobiles. The multi-arc combined gerotor pump is a gerotor pump with a special profile. In this paper, the calculation method of the inner and outer rotor profile of the above-mentioned pump is introduced, and its meshing characteristics are analyzed. In general, three kinds of clearances would be processed to ensure the operation of the pump, named as tip clearance, axial clearance, and radial clearance. These clearances have a great impact on the performance of the pump so that it is important to design them. In response to this problem, this paper established a flow field characteristics model of the multi-arc combined gerotor pump based on computational fluid dynamics (CFD) method, and the effectiveness of the model is then verified through experiments. The influence of the three types of clearances on the flow field
jiang, YueLi, MinWang, YonggangZhen, RanShangguan, Wen-Bin
Designing an efficient vehicle coolant system depends on meeting target coolant flow rate to different components with minimum energy consumption by coolant pump. The flow resistance across different components and hoses dictates the flow supplied to that branch which can affect the effectiveness of the coolant system. Hydraulic tests are conducted to understand the system design for component flow delivery and pressure drops and assess necessary changes to better distribute the coolant flow from the pump. The current study highlights the ability of a complete 3D Computational Fluid Dynamics (CFD) simulation to effectively mimic a hydraulic test. The coolant circuit modeled in this simulation consists of an engine water-jacket, a thermostat valve, bypass valve, a coolant pump, a radiator, and flow path to certain auxiliary components like turbo charger, rear transmission oil cooler etc. A commercial CFD software, Simerics-MP+®, is used to simulate the hydraulic test for two different
Ballani, AbhishekBhagat, MeghrajSrinivasan, ChiranthPasunurthi, ShyamSundarMaiti, DipakZhang, YiMotin, Abdul
The optimization of the exhaust port shape for best mass flow is an excellent opportunity to improve fuel economy, emissions, and knock sensitivity of internal combustion engines (ICE). This is valid for many different types of combustion systems including gasoline, alcohols, alternative fuels such as compressed natural gas (CNG) or hydrogen, and e-fuels. Nowadays, so-called cylinder-head integrated exhaust manifolds (IEM) guide the exhaust gas from the combustion chamber to the turbocharger. This specific design requires lots of strong bends and turnings of the exhaust ports in very narrow space, since they need to be guided through a labyrinth of bolts, water cores, and oil passages. In fact, this challenges the avoidance of increased pressure drops, reduced mass flow rates, and deterioration of port flow efficiencies. The optimization of the individual port by computational fluid dynamics (CFD) is a proper means to minimize or even eliminate these drawbacks. Meanwhile, there are
Hopf, Anselm
Reducing of lubricant oil consumption (LOC) remains a major issue for internal-combustion engines. Especially in recent years, in order to comply with Particular Number (PN) regulations and lower oil viscosity to reduce friction loss, need to reduce the LOC has increased. Controlling the upward oil flow, that passes the piston and piston rings, is effective in reducing the LOC. In addition, oil control ring (OCR) has significant effect on upward oil flow. Therefore, development of a high-precision prediction method of oil behavior around the OCR is important for prediction of LOC. So, the model of Three-piece type oil control ring (3POCR) motion within the OCR groove and the model of oil behavior around the 3POCR were developed using the computer aided engineering (CAE) method in this paper. These models calculate in detail the upward oil outflow to the 3rd land from the OCR groove, which is based on the relation between the OCR motion and the gas pressure as well as the inertial force
Mochizuki, KazuyaSasaki, Ryuichiyazawa, MasaruIijima, NaokiUsui, Miyuki
Hydrogen Internal Combustion Engines (H2-ICEs) are being investigated due to their minimal criteria pollutant and zero CO2 tailpipe emissions. However, oil filters and non-hot joint gaskets have rubber material that can be damaged and deteriorate due to direct or indirect exposure to the high temperature and high-pressure hydrogen in a H2-ICE. Thus, the effects on the properties of a rubber exposed to a hydrogen environment need to be reviewed. In this review paper, the transportation, chemical and mechanical properties of a rubber exposed directly or indirectly to high temperature and high-pressure hydrogen in a H2-ICE have been reviewed. The compatibility of rubber materials used in H2-ICE has been explored. The effects of high-pressure hydrogen on the transportation, chemical and mechanical properties of NBR and HNBR have been reviewed. It is concluded that when the hydrogen pressure is less than or equal to 10 MPa the hydrogen infiltration of rubber remains linearly proportional to
Azeem, NaqashBeatrice, CarloVassallo, AlbertoPesce, FrancescoRossi, RiccardoKhalid, Azka
The layout of component in the engine compartment affects the fluid flow performance, thereby affects the thermal management performance. Based on the fluid flow performance in the engine compartment of an SUV, this paper proposes local optimization plans of the cooling module—moving downward the oil cooler and forward the intercooler, tilting an angle of the cooling module and shifting the fan. This paper took the fan center temperature as the optimization goal and set three levels for the four factors. It was found that the deviation of the fan has the most significant impact on fan center temperature among four factors. Then we discovered that the interaction between the factors has a significant impact on the air intake volume of the cooling module. Finally, the optimization plans were designed with the goal of increasing the air intake volume of the cooling module and the final optimal plan was determined as the oil cooler was moved down by 150mm, the cooling module was tilted to
Zheng, TengNi, JiminLiu, YongShi, Xiuyong
To meet stringent reduction in exhaust emission and improving internal combustion engine fuel efficiency, have forced the designer to optimize auxiliary systems like lubrication and cooling. This paper describes the experimental and simulation verification of a 1.3 litre water cooled engine lubrication system. The lubrication circuit model is built in Ricardo Ignite software. The simulation model preparation steps using 3D-CAD model is explained in paper. Engine main bearing and connecting big-end bearing leakage maps are evaluated using Ricardo Valdyn software which is capable of simulation engine crank-train multi body dynamics along with bearing oil behavior. The pressure and flow distribution at various locations are predicted using simulation model. These simulation predictions are experimentally verified. It is observed acceptable correlation between simulation and experimental values. The same calibrated model is used for a case study where engine main oil gallery pressure for
Nain, Ajay
Engine compartment thermal management can achieve energy saving and emission reduction. The structural design of the components in the engine compartment affects the thermal fluid flow performance, which in turn affects the thermal management performance. In this paper, based on the phenomenon that the surface of the parts in the engine compartment is abnormally high due to design defects of an SUV engine compartment bottom shield, the engine compartment is modeled and analyzed by CFD using the software STAR-CCM+. It is not conducive to the heat dissipation, so the bottom shield needs to be redesigned. To redesign the shape of the bottom shield, four dimensions and one coordinate value were selected as the design parameters, and the oil pan maximum surface temperature was selected as the optimization target. The Latin hypercube sampling method was used to sample the space uniformly, and the experimental design plan was constructed and simulated. The Kriging interpolation model was used
Liu, YongShi, XiuyongZheng, TengLiu, QiangNi, Jimin
Cylinder block is the bulkiest component in engine. It undergoes severe thermal and mechanical loads. Also, cylinder block is multifunctional as it includes positioning of coolant and lubrication circuit, location of coolant and oil pumps, locating cylinder head to form closed combustion chamber, locating mounting points of engine, mounting of alternator, starting motor, and AC compressors. Hence, the cylinder block design should be the strong and robust enough to handle the forces induced by combustion. Taking this requirement as the base, cylinder block is designed for Horizontal K type configuration. In this research, the mounting points of cylinder block are decided based on the imbalance forces for the configuration and from the gas pressure forces. Rigid body dynamics approach is used for locating the mounting points of engine. Topology optimization is carried out to know the location of coolant circuit. As the engine is subjected to heavy thermo-mechanical loads, initially
Kadge, Rushiraj
This study examined the friction factor of replaceable element and conventional oil filters in a diesel engine lubrication flow setting, simulated in a precision benchtop facility that was developed for this purpose. Using clean engine oils, pressure drop across the filters was measured as a function of oil temperature and flow rate in the test facility in the range of 100-220°F and 2.0-4.5 GPM typical of diesel engine lubricant flow. The experimental results show systematic differences in the behavior between conventional and replaceable element oil filters attributable to temperature-related permeability variation in the replaceable filter element
Smith, Adam D.Anilkumar, Amrutur V.
This document covers the mechanisms associated with the power cylinder system which might affect blow-by. It will not discuss in detail the blow-by mechanisms from other systems or engine subsystems
Piston and Ring Standards Committee
As the electrification and connectivity technologies penetrate the market, the opportunities for intelligent thermal management of the vehicles become more salient. When an exhaust gas heat recovery (EGHR) system is used to recover waste heat from gasoline engine exhaust, the thermal parameters of the exhaust gas vary greatly, and these influence the performance of the heat exchanger (HE) system. To improve the recovery of exhaust waste heat and its conversion to faster coolant warm-up and cabin heating performance effectively, the heat transfer evaluation and optimal performance analysis are conducted on different EGHR system designs with different exhaust thermal parameters. This study aims at analyzing the fuel economy benefit with state-of-the-art HE designs in the automotive industry for exhaust gas-to-oil and exhaust gas-to-coolant heat transfer. Both physical testing and virtual simulation helped us develop a method to take advantage of the exhaust gas heat. The test result
Kumar, VivekDadam, Sumanth ReddyZhu, DiMehring, Jan
The automotive internal combustion engine is a thermal machine that, from the combustion of the fuel inside the combustion chamber, releases thermal energy for the engine operation and consequently the displacement of the vehicle. A considerable part of this thermal energy is lost and the way to detect this loss is through experimental testing and applying the thermal balance to the engine. This work aimed to perform a thermal balance of the Otto cycle engine involving the energy released due to the gasoline combustion process, power delivered from the engine shaft, energy rate rejected for the cooling system, energy rate rejected for the exhaust system and energy rate rejected to the environment in the form of heat and incomplete combustion. The experiment consisted of making a thermal balance of the engine running with gasoline from experimental data measured on the engine operating on a bench dynamometer varying load and rotation conditions. The results showed that, concerning the
Santana, Claudio MarcioBortolaia, Luís AntônioSiqueira, Luana Magalhães
This SAE Information Report provides general information for installing and tightening fluid conductors and connectors. Following these guidelines, with the consistent proper use of torque wrenches, tightening procedures, and correct torque levels, will result in diminishing leaks and improving service life by avoiding hose twisting, tube binding, false torque, and improper joint closures. Since many factors influence the pressure at which a hydraulic system will or will not perform satisfactorily, this report should not be used as a “standard” nor a “specification,” and the values shown should not be construed as “guaranteed” minimums, maximums, or absolutes. This document is an information report to help users by gathering available information from the various connector standards and publishing the information in one source for easy retrieval and applied common usage. This SAE Information Report is primarily intended for mobile/stationary industrial equipment applications. Aircraft
Hydraulic Tube Fittings Committee
This SAE Aerospace Recommended Practice (ARP) describes the multi-pass method for evaluating the filtration performance of fine lube filter elements, commonly utilized in aerospace power and propulsion lubrication systems: gas turbine engines, auxiliary power units (APUs), helicopter transmissions, constant speed drives (CSDs), and integrated drive generators (IDGs
AE-5B Aircraft and Engine Fuel and Lubricant Sys Components
This document describes methodologies to determine the causes blow-by oil consumption caused by the power cylinder
Piston and Ring Standards Committee
This document summarizes types of heat sinks and considerations in relation to the general requirements of aircraft heat sources, and it provides information to achieve efficient utilization and management of these heat sinks. In this document, a heat sink is defined as a body or substance used for removal of the heat generated by thermodynamic processes. This document provides general data about airborne heat sources, heat sinks, and modes of heat transfer. The document also discusses approaches to control the use of heat sinks and techniques for analysis and verification of heat sink management. The heat sinks are for aircraft operating at subsonic and supersonic speeds
AC-9 Aircraft Environmental Systems Committee
This SAE Recommended Practice is applicable to oil-to-air and oil-to-coolant oil coolers installed on mobile or stationary equipment and provides a glossary of oil cooler nomenclature. Such oil coolers may be used for the purpose of cooling automatic transmission fluid, hydraulic system oil, retarder system fluid, engine oil, etc. This document outlines the methods of procuring the test data to determine the operating characteristics of the oil cooling system and the interpretation of the results
Cooling Systems Standards Committee
This document establishes standard graphical symbols and color conventions for use in either still (static) or animated graphics used for communicating service information. This document’s purpose is to communicate conventions for using those symbols and colors to accurately and consistently communicate intended information via graphics-based documentation. These practices are intended for use in service procedures, assembly instructions, training materials, and similar applications when trying to minimize the amount of human natural language text used within the document. The still and animated graphical conventions referenced should support effective communication via paper and “traditional” electronic media. The conventions can also extend to documenting via additional electronic delivery paradigms such as augmented reality (AR). This document is intended for organizations interested in using graphics-based documentation to record and communicate assembly, adjustment, maintenance
Graphics Based Service Information Committee
This document describes methodologies to determine the causes of high oil consumption caused primarily by the power cylinder system
Piston and Ring Standards Committee
This SAE Standard covers complete general and dimensional specifications for the various types of lubrication fittings and related threaded components intended for general application in the automotive and allied fields
Hydraulic Tube Fittings Committee
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