Limited-Temperature Cycle

Paper #:
  • 951963

Published:
  • 1995-08-01
Citation:
Kruse, D. and Yano, R., "Limited-Temperature Cycle," SAE Technical Paper 951963, 1995, https://doi.org/10.4271/951963.
Pages:
26
Abstract:
Increased thermal efficiency for spark ignition engines is studied experimentally using computer simulation of a three phase heat release model. Various compression ratios, combined with advanced multiple-direct-injection techniques, are researched in an effort to extend the effectiveness of current engine designs beyond their present knock-limited compression ratio. A new ideal engine cycle is presented to demonstrate the conditions appropriate for use of 88-98 octane fuel and spark ignition with an 18:1 compression ratio. The value of isothermal combustion to achieve over 42% brake thermal efficiency is presented.
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