Optimizer Control Corp.

Deere & Company

Michael J Pipho

Ronnie F Burk

Christopher D Turner

David B Kittelson

John L Lahti

Dustin W Ridenour

Michael J Maney

Dick J Goering

Timothy P Slattery

Thomas M Johnson

Matthew L Franklin

Keith A Luke

An engine performance optimizing system is described that requires only a single engine parameter (shaft revolution time) to be measured. By simultaneously dithering spark timing, air/fuel ratio and/or EGR rate in accordance with a predetermined cyclic pattern, and measuring shaft speed during each discrete phase of the dither cycle, correction factors can be computed and used to adjust the spark setting, the air flow and/or the recirculation rate in a way that causes engine performance to be enhanced in terms of fuel economy and lowered emissions.

System for optimizing the performance of internal combustion engines

Growing community of inventors

Minneapolis, MN, United States of America

Michael J Pipho