ENGINE DESIGN: PORSCHE APPROACH TO STRATIFIED CHARGE FOR MINIMUM EXHAUST EMISSIONS

Development work being undertaken by Porsche on stratified charge sks engine design is intended to overcome the problems of obtaining maximum fuel economy and minimum exhaust emissions. Due to difficulties in stratifying the charge with an open combustion chamber design the company has concentrated on a multi-chamber design as in the Honda Cvcc Design. In this design, combustion is intitiated in an auxiliary chamber from a rich mixture which is then ejected into a very weak mixture in the main chamber. Thus the weak mixture is completely burnt and combustion occurs regularly over a wide range of speed and load conditions. Test results compare variations in peak pressure and combustion characteristics for the conventional otto and the sks engines. /TRRL/

• Corporate Authors:

  IPC Industrial Press Limited

  33-40 Bowling Green Lane
  London EC1R 0NE,   England 
• Authors:
  • GARRETT, K
• Publication Date: 1976-7

Language

• English

Media Info

• Features: Figures;
• Pagination: p. 25-26
• Serial:
  • Engineering Materials and Design
  • Volume: 20
  • Issue Number: 7

Subject/Index Terms

• TRT Terms: Combustion; Combustion chambers; Design; Development; Economic efficiency; Engines; Exhaust gases; Fuel consumption; Hydrocarbons; Minimization; Mixtures; Stratified charge engines
• Uncontrolled Terms: Efficiency; Minimum
• ITRD Terms: 3860: Combustion; 9013: Development; 5911: Efficiency; 2442: Emission; 232: Fuel consumption; 7367: Hydrocarbon; 9046: Minimum; 1334: Motor
• Subject Areas: Design; Economics; Energy; Highways; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00142751
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Oct 29 1977 12:00AM