Potential for Closed Loop Air-Fuel Ratio Management of a Diesel Engine

Paper #:
  • 1999-01-0517

Published:
  • 1999-03-01
Citation:
Johnson, W., Li, S., and Oppenheim, A., "Potential for Closed Loop Air-Fuel Ratio Management of a Diesel Engine," SAE Technical Paper 1999-01-0517, 1999, https://doi.org/10.4271/1999-01-0517.
Pages:
11
Abstract:
The potential for improving the efficiency of a heavy duty turbocharged diesel engine by closed loop Air-Fuel Ratio (AFR) management has been evaluated. Testing conducted on a 12 liter diesel engine, and subsequent data evaluation, has established the feasibility of controlling the performance through electronic control of air management hardware. Furthermore, the feasibility of using direct in-cylinder pressure measurement for control feedback has been established. A compact and robust fiber optics sensor for measuring real time in-cylinder pressure has been demonstrated on a test engine. A preferred method for reducing the cylinder pressure data for control feedback has been established for continued development.
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