Your Selections

16th Asia Pacific Automotive Engineering Conference
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Events

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

Biodiesel Fuel Effects on Injection System and Establishment of the Evaluation Method

DENSO CORP.-Toshihiko Omori, Akio Tanaka, Koichi Yamada, Satoshi Bunne
Published 2011-10-06 by The Automotive Research Association of India in India
As exhaust emissions regulations are becoming increasingly stringent year by year, common rail system, which is capable of injecting high-pressure fuel, is already becoming mainstream in the field of diesel injection equipment. On the other hand, market fuels tend to diversify. From the viewpoint of global warming prevention in particular, biodiesel fuels are attracting attention as renewable fuel. Fatty Acid Methyl Ester (FAME) contained in biodiesel fuel is liable to aging and tends to generate deposits, thus, there is a concern about not only deposit adhesion to diesel injection equipment but also corrosion occurrence due to free water presence.This paper reports that an accelerated re-production test method which simulates real-world market environment successfully clarified the effects of DLC coating on control of deposit adhesion to diesel injection equipment as well as its mechanism and the corrosion mechanism was understood.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A Liquid-Piston Steam Engine

DENSO CORP.-Shinichi Yatsuzuka, Shuzo Oda, Yasunori Niiyama, Kentaro Fukuda, Kazutoshi Nishizawa
The University of Tokyo-Naoki Shikazono
Published 2011-10-06 by The Automotive Research Association of India in India
Recently, waste heat recovery system from automobile exhaust gas has attracted a lot of attention as one of the promising technology to improve fuel efficiency and to reduce carbon dioxide emission. In order to put this system into practice, we developed a novel liquid-piston steam engine which has large potential of high efficiency, high reliability and low cost. Thermal efficiency of 12.7 % is achieved at temperatures of Th = 270 °C and l = 80 °C. Finally, electrical output of waste heat recovery system with the liquid-piston steam engine is estimated to be 44 or 79Wh under NEDC or HWFET modes, respectively.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Numerical Studies on the Combustion and Liquid Fuel Films Characteristics with the Dependence on Injection and Spark Timing of GDI Engine

Korea Univ.-Ju Hyeong Seo, Ho Young Kim, Jin Woo Bae, Jin Taek Chung
Published 2011-10-06 by The Automotive Research Association of India in India
GDI (gasoline direct injection) engine can be one of the solutions to increase the fuel efficiency and reduce NOx (nitrogen oxide) emissions. The LFF (liquid fuel film) formation within the engine cylinder due to direct injection is an impediment to both fuel efficiency and environment problems. To achieve the proper operating conditions, liquid fuel film formation and combustion characteristics in the cylinder of GDI engine must be investigated.The numerical simulations for the characteristics of GDI engine including the effect of both fuel injection and spark timing have been carried out to optimize the liquid fuel film phenomenon and combustion characteristics. In this study, 3D unsteady Eularian-Langrangian two-phase model was used to obtain an optimal operating condition of a GDI engine by using S/W STAR-CD (CD-adapco). The κ-ε/RNG model was used as a turbulence model. Simulation results indicate the flow field and mixture distribution inside the cylinder to obtain subsequent combustion and emission characteristics. Moreover, conditions minimizing the amount of LFF within cylinder have been suggested.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Evaluation of Time-Resolved Nano-Particle and THC Emissions of Wall-Guided GDI Engine

Hyundai Motor Co.-Jongil Park, Seung Kook Han
Korea Institute of Energy Research-Youngjae Lee
Published 2011-10-06 by The Automotive Research Association of India in India
A nano-sized PM and THC emission characteristics were investigated according to the fuel injection strategy such as a pressure and timing in the GDI engine. On the part-load condition, the particulate emissions exhibited a strong sensitivity to the injection timing. The fuel injection pressure also had a great association with the nano-particles and THC. A size of PM exhausted from the GDI engine located near 10nm on the part-load. In contrast, accumulation mode particles within 60 - 80nm mainly exhausted during the cold transient start phase. Increment of fuel injection pressure positively affected on the nano-particle and THC emissions during the start of the engine, as well.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Function, Technology and the Level of Implementation of the Digital Tachograph System in EU-AETR and Non EU-AETR Countries

Motor Transport Institute-Marcin Rychter
Published 2011-10-06 by The Automotive Research Association of India in India
The paper presents main legal rules introducing the digital tachograh system main requirments which must be fulfilled by producers of digital tachographs in order to get the type approval, possibility of future requirements of digital tachograph, main functions of digital tachograph, characteristics of participant of digital tachograpfs system and their tools of the identification, acting and setting of authorize workshops in Poland and Europe Union, accessible methods of check and calibration of digital tachographs and their description, based on Commission Regulation (EC) No 1360/2002 of 13 June 2002, replacing the Annex 1B and Polish law. These paper also presents current level of implementation of digital tachograph system in Europe in light of introduction of digital tachograph second generation.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Design and Development of Vane Type Variable flow Oil Pump for Automotive Application

Anna Univ.-K. Srinivasan
Ucal Fuel Systems Limited-S. Loganathan, S. Govindarajan, J. Suresh Kumar, K. Vijayakumar
Published 2011-10-06 by The Automotive Research Association of India in India
Automobile OEM's around the world are looking to improve their overall vehicle and engine efficiency in terms of fuel economy and power output. Efficiency improvement is possible by cutting down the engine parasitic loads. One such parasitic load is the oil pump, which lubricates the engine parts. Oil pump is the heart of an engine lubrication system, and its important functions are cooling and lubricating the engine moving parts by delivering adequate oil flow based on the engine demand. Insufficient or no oil delivery from the oil pump leads to the seizure of the engine.The internal vane type oil pump is one kind of positive displacement type pump, where oil gets transferred from the oil sump into the inlet volume. The negative pressure is created inside the pumping chamber due to increase in area. As the vane rotates eccentrically with respect to the stator, it delivers the oil at a higher pressure from inlet to outlet and supplies to engine gallery through the discharge port.The vane type oil pump, being a positive displacement pump and…
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A Study on the Thermal Characteristics According to Input Voltage Variation in Micro Chip Hydrogen Sensor for Fuel Cell Electric Vehicle

Kyunghee Univ.-Kyoung-Suk Park
Sejong Industrial Co. Ltd.-Ho-Cheol Suh, Hyung-Chul Noh, Yong-Jun Cho
Published 2011-10-06 by The Automotive Research Association of India in India
Recently, energy conversion system has been proposed the use of a hydrogen which is a typical low carbon and eco-friendly energy. The hydrogen energy have demerits for storage and movement because hydrogen gas have a big diffusion characteristic, even if hydrogen energy is a eco-friendly energy. Therefore, hydrogen leakage sensing system is necessarily applied and required for high sensing performance.In this study, we conducted to determine the design parameters for the micro chip hydrogen sensor with optimized sensing conditions under the thermal characteristics.The thermal characteristics on input voltage variation was studied for correlation analysis of current, consumption power and heater temperature according to the input voltage variation from 1.0 voltage to 10.0 voltage every 0.5 voltage. The heater resistance was higher, the heat generation temperature was lower. The heat generation temperature depended on current. Temperature coefficient of each heater resistance was low against temperature coefficient of bulk platinum.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Making Greener Off-Road Vehicles - Assessment Method and Design Solutions

NAMI-Service Innovation Firm-Sergey B. Shukhman, Vladimir E. Malyarevich
Published 2011-10-06 by The Automotive Research Association of India in India
Over the past several years increasing concern is expressed over the impact of tractors and heavy-duty trucks on the environment. One of the factors specific to this type of vehicles is the level of soil damage inflicted by the vehicle. This article suggests methods of ameliorating this type of damage.It is suggested that the harmful impact of the vehicle on the soil be assessed on the basis of an index that takes into account the reduction in the soil's reproductive capacity due to being traversed by vehicular wheels.A computational method is suggested that allows the design of off-road vehicles; it takes into account the number of axles and their arrangement along the base; the distribution of load between the axles, the type and specifics of the drivelines, tire models and pressure, turning patterns, etc. This method allows comparative evaluation of various vehicles, whether already in existence or under design. Design solutions for reducing the environmental damage caused by off-road vehicles are suggested.Particular attention is paid to the design of all-wheel-drive vehicles equipped with intelligent automatic…
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Performance Analysis for Chain Collision Scenario with V2V Communication

Hanyang Univ.-Hyun-Soo Seo, Tae-Oh Kim, Sung-Dae Jung, Sang-Sun Lee
Published 2011-10-06 by The Automotive Research Association of India in India
Recently, various vehicle safety services have been researched due to the development of vehicle sensor devices. In particular, a study related to FVCWS (Forward Vehicle Collision Warning System) is continuously being conducted. However, there is a limitation preventing chain collisions because the system presently relies on only information from one vehicle. However, chain collisions can be avoided and the damages are reduced by utilizing information of neighboring vehicles through V2V (Vehicle to Vehicle) communication. In this paper, we simulated chain collision scenarios, including factors related to FVCWS, and analyzed the limitations. Thus we demonstrate that FVCWS using V2V communication significantly decreases chain collision and the consequent damage.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

The Technical Efficiency of Chennai Auto Industry Cluster

Government of Tamil Nadu-E. Bhaskaran
Published 2011-10-06 by The Automotive Research Association of India in India
The Chennai is an one of Automotive hub of India due to it's Automotive Industry presence producing over 40% of the India's Vehicle and Components. During 2001-02, the Automotive Component Industries(ACI) in Ambattur Industrial Estate, Chennai has faced problems on infrastructure(Approach Road, Storm water drainage system, Sewerage System, Sewage treatment plant, Solid Waste Management, Landscaping, Street Lighting and Logistics/ Parking), technology, procurement, production and marketing. In the year 2004-05 under the Cluster Development Approach (CDA), they formed Auto Cluster (AC) got grant under Industrial Infrastructure Upgradation Scheme from Government of India under Public Private Partnership Concept and implemented UNIDO-AIEMA Auto Cluster Supplier Development Programme under Consolidated Project for SME development in India. Due to this the infrastructure, technology, procurement, production and marketing interrelationships taken place among ACI. The objective is to find the technical efficiency of auto cluster before (2001-02) and after the CDA (2008-09). The methodology adopted is collection of primary data from ACI and analyzing using Data Envelopment Analysis (DEA) of Charnes-Cooper-Rhodes (CCR) Model. The Correlation Coefficient Analysis reveals that there is significant…
Annotation ability available