Ken Umehara

Title: Ken Umehara: Innovator in Engine Technology

Introduction

Ken Umehara is a notable inventor based in Higashihiroshima, Japan. He has made significant contributions to the field of engine technology, holding a total of 3 patents. His work focuses on improving engine efficiency and reducing emissions, which is crucial in today's automotive industry.

Latest Patents

Umehara's latest patents include a method and system for purifying exhaust gas for engines. This innovation involves raising the exhaust gas temperature after a cold engine start to rapidly activate a catalyst in the exhaust line. By retarding the ignition timing of the air-fuel mixture, Umehara's method promotes combustion, thereby accelerating the catalyst to reach its effective activation temperature quickly. Another significant patent is a warming-up system for automotive engines. This system extends the overlap period during which both the intake and exhaust valves are open when the engine is cold. This extension increases the residual gases in the cylinders, slowing fuel burning and elevating exhaust gas temperatures, which helps warm the engine efficiently.

Career Highlights

Ken Umehara is currently employed at Mazda Motor Corporation, where he continues to innovate in engine technology. His work has been instrumental in developing systems that enhance engine performance while addressing environmental concerns.

Collaborations

Umehara collaborates with talented coworkers, including Kenji Kashiyama and Mitsuto Hitomi, to drive advancements in automotive technology.

Conclusion

Ken Umehara's contributions to engine technology through his innovative patents demonstrate his commitment to improving automotive performance and sustainability. His work at Mazda Motor Corporation continues to influence the future of engine design and efficiency.