RECENT KS WORK ON THE REDUCTION OF PASSENGER CAR ENGINE FUEL CONSUMPTION
The increased public interest in economic use of energy has lead to intense efforts by engineers to achieve a reduction in engine friction losses. Despite differences quoted in the literature, the proportion of the friction losses caused by the piston assembly is certainly of such an order as to justify considerable expenditure in the numerical determination of consumption improvements due to optimization of piston and rings. In engine tests carried out by Kolbenschmidt AG an accuracy of less than or equal to plus or minus 0.5% has been achieved in the measurement of specific fuel consumption. This paper presents a basic description of the measurement method and the results of piston optimization for several small engines (four cylinder gasoline and diesel engines). A 3%-5% fuel economy improvement under combined city/highway traffic conditions can be achieved by the use of an optimized Fuel Economy Piston. The contribution of the basic design parameters such as weight, skirt area and ring pack are discussed.
- Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
- Passenger Car Meeting Dearborn, Michigan, October 1-4, 1984.
Warrendale, PA United States 15096
- Essig, G
- Publication Date: 1984
- Features: Figures; References;
- Pagination: 8 p.
- TRT Terms: Diesel engines; Friction losses; Fuel consumption; Gasoline engines; Optimization; Piston rings; Pistons (Engines); Vehicle power plants
- Old TRIS Terms: Automobile engines
- Subject Areas: Energy; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00395727
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: SAE 841224, HS-038 251
- Files: HSL, USDOT
- Created Date: Jun 30 1985 12:00AM