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Fluid Flow, Combustion and Efficiency With Early or Late Inlet Valve Closing

På svenska

Author

  • Fredrik Söderberg
  • Bengt Johansson

Summary, in English

This paper is a study of the effects of valve timing and how it influences the in-cylinder fluid flow, the combustion, and the efficiency of the engine. An engine load of 4.0 bar imepdndedt was achieved by setting the inlet valve closing time early or late to enable unthrottle operation. Inlet valve deactivation was also used and asymmetrical valve timing, i.e., valve timing with the two inlet valves opening and closing at different times. The valve timing was altered by switching cam lobes between the experiments.

Department/s

Publishing year

1997

Language

English

Publication/Series

SAE Transactions, Journal of Engines

Volume

106

Issue

SAE Technical Paper 972937

Document type

Journal article

Publisher

Society of Automotive Engineers

Topic

  • Other Mechanical Engineering

Keywords

  • Combustion
  • Fluid Flow
  • Variable Valve Timing
  • Engine

Status

Published

ISBN/ISSN/Other

  • ISSN: 0096-736X