Diesel Engine Efficiency Improvement Through Closed Loop Air-Fuel Ratio Optimization

Period of Performance: 11/15/1998 - 11/14/2000


Phase 2 SBIR

Recipient Firm

Bkm, Inc.
5141 Santa Fe Street
San Diego, CA 92109
Principal Investigator

Research Topics


The objective of this Phase II program will be to demonstrate the optimizing the performance of diesel engines through closed loop electronic control of air management hardware. Optimization of the air/fuel ratio of a turbocharged diesel engine at each speed and load operating point has been proven to reduce fuel consumption and exhaust emissions. The innovative technology presented in this proposal provides a system for high speed closed loop air/fuel trimming. A compact, robust sensor based on fiber optic technology will be used in conjunction with a high speed data processing and electronically controlled air management system- The system will be demonstrated on a commercial heavy duty diesel engine provided by BKM. BENEFITS: The proposed technology will lead to the optimization of both fuel efficiency and the reduction of pollutants in military as well as commercial automotive, marine and stationary engines. The system will allow engines to operate at peak efficiencies regardless of turbocharger catching compromises, conventional control tolerances and operating environment.