Your Selections

Combustion chambers
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Computerized Experimental Investigation on Performance & Exhaust Emission of Twin Cylinder Adiabatic Diesel Engine Coated with YSZ

SVMIT Bharuch-Dr. Dipakkumar C. Gosai
SVNIT Surat-Anil Kumar Gillawat
  • Technical Paper
  • 2019-28-2548
Published 2019-11-21 by SAE International in United States
The fuel consumption and performance of the Internal Combustion (IC) engine is improved by adopting concepts of an adiabatic engine. An experimental investigation for different load conditions is carried out on a water-cooled, constant-speed, twin-cylinder diesel engine. This research is intended to emphasize energy balance and emission characteristic for standard uncoated base engine and adiabatic engine. The inner walls of diesel engine combustion chamber are thermally insulated by a top coat of Metco 204NS yttria-stabilized zirconia (Y2O3ZrO2) powder (YSZ) of a thickness of 350 mm using plasma spray coating technology. The same combustion chamber is also coated with thermal barrier coating (TBC) bond coats of AMDRY 962 Nickle chromium aluminum yttria of thickness of 150 mm. The NiCrAlY powder specially designed to produce coating’s resistance to hot corrosion. The combination of this ceramic material produces excellent high-temperature thermal barrier coating (TBC) resistant to thermal cycling stresses and strains. The engine valves, engine heads, and engine pistons were thermal barrier ceramic coated and computerized experimental results were compared to the base engine. Experimental results justified TBC…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Experimental Investigation on Performance and Emission Characteristics of a Single Cylinder CRDI Engine Fueled with Diesel-Methanol Blend

Sridhar Sahoo, Chinmay Nayak, Srinibas Tripathy, Dhanajay Srivastava
  • Technical Paper
  • 2019-28-2380
Published 2019-11-21 by SAE International in United States
Diesel engine is widely used for its high thermal efficiency and better fuel efficiency. However, increasing usage of petroleum fuel and environmental degradation motivates to use renewable biofuel as a replacement to conventional diesel. Biofuel produced from non-edible sources can be used as a partial substitute of diesel for the significant growth of fuel economy and reduction of environmental pollution. Methanol can be implemented as a blend fuel in the diesel without affecting engine design. In this paper, we study the effect of diesel-methanol blends and injection parameters in particular, start of injection (SOI) and fuel injection pressure (FIP) on a common rail direct injection (CRDI) diesel engine performance and emission were investigated. Four blends were prepared by mixing diesel with methanol (5%, 10%, 15% and 20% by mass) and adding a certain amount of oleic acid and Iso-butanol to get a stable blend. Experiments were performed at an engine speed and load of 1500 rpm and 15 Nm, respectively. FIP governs air-fuel mixture preparation and fuel atomization which control combustion behavior of the engine,…
This content contains downloadable datasets
Annotation ability available
new

1D Numerical and Experimental Investigations of an Ultralean Pre-chamber Engine

SAE International Journal of Engines

Business Unit Gasoline Powertrains FEV Europe GmbH in Aachen, Germany-Christoph Müller, Knut Habermann
Universita degli Studi di Napoli Federico II Dipartimento di Ingegneria Industriale, Italy-Vincenzo De Bellis
  • Journal Article
  • 03-13-02-0012
Published 2019-11-19 by SAE International in United States
In recent years, lean-burn gasoline Spark-Ignition (SI) engines have been a major subject of investigations. With this solution, in fact, it is possible to simultaneously reduce NOx raw emissions and fuel consumption due to decreased heat losses, higher thermodynamic efficiency, and enhanced knock resistance. However, the real applicability of this technique is strongly limited by the increase in cyclic variation and the occurrence of misfire, which are typical for the combustion of homogeneous lean air/fuel mixtures. The employment of a Pre-Chamber (PC), in which the combustion begins before proceeding in the main combustion chamber, has already shown the capability of significantly extending the lean-burn limit. In this work, the potential of an ultralean PC SI engine for a decisive improvement of the thermal efficiency is presented by means of numerical and experimental analyses. The SI engine is experimentally investigated with and without the employment of the PC with the aim to analyze the real gain of this innovative combustion system. For both configurations, the engine is tested at various speeds, loads, and air-fuel ratios. A…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Heat Absorption Properties of Fuel Blends from Recycled Edible and Lubricating Oils

Tablet School and Universidad Internacional del Ecuador-Marcos Gutierrez
Universidad Internacional del Ecuador-Andres Castillo, Juan Iñiguez, Gorky Reyes, Diego Perez
  • Technical Paper
  • 2019-01-5087
Published 2019-11-14 by SAE International in United States
The urgency to reduce pollutant emissions from the combustion of neat diesel has led to the production, especially from waste substances, of various types of alternative fuels and new methods of analysis that sustain their use. The study of the heat absorption properties of different fuel blends, from recycled edible and lubricant oils, allows to identify the type and concentration of the fuel blend, which allows taking advantage of the generated heat from the air compression stroke of an internal combustion engine, increasing the temperature in the combustion chamber volume and giving the possibility to accelerate the chemical reaction during the combustion process. By means of spectral analysis in the visible and near-ultraviolet range of electromagnetic radiation, it measured the absorption capacity of heat energy of different concentrations and types of fuel blends from vegetable-animal and mineral-synthetic sources. It was observed that the fuel blends from the synthetic and mineral base are the ones which absorb more heat energy compared with the blend of animal-vegetable base and diesel. With the present study it is possible…
This content contains downloadable datasets
Annotation ability available
new

Development of a Measuring System for the Visualization of the Oil Film between the Piston and Cylinder Liner of a Gasoline Engine

SAE International Journal of Engines

Technical University of Munich, Germany-Julian Schäffer, Claus Kirner, Martin Härtl, Georg Wachtmeister
  • Journal Article
  • 03-13-02-0013
Published 2019-11-14 by SAE International in United States
The design of cylinder liners, pistons, and piston rings is subject to different conflicting goals. In addition to a loss-free seal of the combustion chamber, sufficient oil must be present between the friction partners. Both the reduction of piston assembly friction and the minimization of oil consumption are crucial to achieve the strictly defined CO2 and emission standards. To master this challenge and find the best compromise requires a lot of system-specific know-how. The automobile and engine manufacturers focus mainly on friction-reducing measures, which are analyzed with different measuring methods such as the floating-liner method, the strip-down method, or the instantaneous indicated mean effective pressure (IMEP) method. However, the interpretation of the results and the development of realistic simulation models lacks information about the oil film behavior and the film thickness. In order to gain this missing knowledge, instruments for oil film visualization and oil film thickness measurement have to be developed. In this study, the two-dimensional laser-induced fluorescence method (2D-LIF) is used to visualize the lubricating oil film between the piston and the cylinder…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Experimental Study on Combined Effect of Yttria Stabilized Zirconia Coated Combustion Chamber Components and Emulsification Approach on the Behaviour of a Compression Ignition Engine Fuelled with Waste Cooking Oil Methyl Esters

Hindustan Institute of Tech. & Science-Sangeethkumar Elumalai, Jaikumar Mayakrishnan, Sasikumar Nandagopal, Selvakumar Raja, Ramanathan Velmurugan
Published 2019-10-11 by SAE International in United States
Waste Cooking Oil (WCO) is generated in large quantity worldwide due to the increase in population and change of food habits. This work is about utilizing this WCO as an alternative fuel for Compression Ignition (CI) engine, in view of addressing the constraints in the domain of land as well as air pollution. A fuel and engine level modification were carried out to analyse the behaviour of the test engine. In the first phase of the study, collected WCO was converted into its methyl esters (i.e. WCOME) and tested for its properties. A single cylinder, water cooled, direct injection, compression ignition engine was developed with suitable emission and combustion parameters computing equipments in the second phase of the work. In the third phase of the work, the developed engine was tested with neat diesel, WCO and WCOME under different engine power outputs.WCOME was converted into its emulsion (WCOMEE) and tested in the developed engine in the fourth phase of the work. In the fifth phase of the study, combustion chamber components like piston, cylinder head…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Effect of Injector Cone Angle and NTP on Performance and Emissions of BS6 Engine

Mahindra Research Valley-Anbarasu Muthusamy, Vagesh Shangar Ramani, Pranav Kumar Sinha
Published 2019-10-11 by SAE International in United States
The combustion phenomenon of diesel engines has got a very major impact on the performance and exhaust emission levels. Several important factors like engine components design, combustion chamber design, Exhaust gas recirculation, exhaust after treatments systems, engine operating parameters etc. decide the quality of combustion. The role of fuel injector is crucial on achieving the desired engine performance and emissions. Efficient combustion depends on the quantity of fuel injected, penetration, atomization and optimum timing of injection. The nozzle through flow, cone angle, no of sprays and nozzle tip penetration are the factors which lead to the selection of perfect injector for a given engine. This paper focusses on the selection of the best fit injector suiting the BS6 application on evaluating the performance and emission characteristics. Injectors used were with varying cone angles and NTP. The nozzle tip protrusion of the injectors were varied by changing the sealing washer thickness. With all the above injector configurations, the performance and emission were thoroughly analysed at every level. Final confirmation of the configuration was selected based on…
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Design and Analysis of De-Lavel Restrictor with Throttle Body for Formula Vehicle

Force Motors Limited-Pradeep Chandrasakaran
Sri Krishna College of Engg. and Tech.-Soundararajan Ranganathan, Aswin Sriram Thiyagarajan, Sathishkumar Kuppuraj
Published 2019-10-11 by SAE International in United States
The restrictor is a component which controls the mass flow of air passing to the engine. The proposed work focuses on design and analysis of air intake restrictor of Duke 390cc engine which is used in formula vehicles. As an constrain of this system, the air flows through a single circular throat of diameter 20mm. In past decades conventional venture nozzles were used as a restrictor but it leads to nominal press drop. A de lavel nozzle is a tube pinched in the middle, making an asymmetric hourglass shape. It is used to accelerate a higher supersonic speed in the axial direction. The main objective is to utilize De-Laval Nozzle for the minimal pressure drop. The change in pressure will increases the engine power output. The analysis is done by varying design conditions such as three levels of convergent (12,14 and 16 degrees) and three levels of divergent angles (4, 6 and 8 degrees) are taken into consideration. After numerous CFD Simulations, it is inferred that the optimal angles of 14 and 4 degrees for…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Effects of Water Injector Spray Angle and Injector Orientation on Emission and Performance of a GDI Engine - A CFD Analysis

SAE International Journal of Engines

Indian Institute of Technology Madras, India-Ankit Ashokrao Raut, J.M. Mallikarjuna
  • Journal Article
  • 03-13-01-0002
Published 2019-10-08 by SAE International in United States
Higher water evaporation and proper water vapor distribution in the cylinder are very vital for improving emission and performance characteristics of water-injected engines. The concentration of water vapor should be higher and uniform near the walls of the combustion chamber and nil at the spark plug location. In direct water-injected engines, water evaporation, vapor distribution, and spray impingement are highly dependent on injector parameters, viz., water injector orientation (WIO), location, and spray angle. Therefore, in this article, a computational fluid dynamics (CFD) investigation is conducted to study the effects of water injector spray angle (WISA), and WIO on the water evaporation, emission, and performance characteristics of a four-stroke, wall-guided gasoline direct injection (GDI) engine. The WISA is varied from 10° to 35°, whereas the WIO is varied from 15° to 35° in steps of 5°. The water is injected in the compression stroke with an optimum injection pressure of 50 bar. Water-to-fuel (W/F) ratio and spark timing are fixed at their optimum values with a compression ratio (CR) of 13.5. The engine is operated at…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Knock Onset Detection Methods Evaluation by In-Cylinder Direct Observation

Istituto Motori CNR-Francesco Catapano, Paolo Sementa, Bianca Maria Vaglieco
Published 2019-10-07 by SAE International in United States
Improvement of performance and emission of future internal combustion engine for passenger cars is mandatory during the transition period toward their substitution with electric propulsion systems. In middle time, direct injection spark ignition (DISI) engines could offer a good compromise between fuel economy and exhaust emissions. However, abnormal combustion and particularly knock and super-knock are some of the most important obstacles to the improvement of SI engines efficiency. Although knock has been studied for many years and its basic characteristics are clear, phenomena involved in its occurrence are very complex and are still worth of investigation. In particular, the definition of an absolute knock intensity and the precise determination of the knock onset are arduous and many indexes and methodologies has been proposed.In this work, most used methods for knock onset detection from in- cylinder pressure signal have been considered. Moreover, knock intensity has been evaluated by means of two common indexes. High speed imaging has been carried out in the combustion chamber of a high performance DISI engine provided with an optical window in…
This content contains downloadable datasets
Annotation ability available