Location History:
- Tokyo, JP (1998)
- Hino, JP (2006 - 2012)
Company Filing History:
Years Active: 1998-2012
Title: Kiyohiro Shimokawa: Innovator in Diesel Engine Technology
Introduction
Kiyohiro Shimokawa is a notable inventor based in Hino, Japan. He has made significant contributions to the field of diesel engine technology, holding three patents that showcase his innovative approach to improving engine efficiency and performance.
Latest Patents
One of his latest patents is a combustion chamber structure for direct injection diesel engines. This invention aims to increase the recirculated amount of exhaust gas while minimizing the generation of black smoke and maintaining fuel efficiency. The design features a cavity on the top surface of the piston, which serves as the primary combustion chamber. Fuel is injected radially into the cavity to self-ignite, while a depression at the outer periphery of the cavity creates a step that enhances combustion efficiency.
Another significant patent is a method for regenerating particulate filters. In this method, fuel is added to exhaust gas upstream of a catalytic regeneration type particulate filter. The fuel is oxidized on a flow-through type oxidation catalyst, generating exothermic heat that burns off accumulated particulates in the filter. This process is particularly effective during light-load engine operation, where a retarder is activated to maintain torque while increasing fuel injection.
Career Highlights
Kiyohiro Shimokawa is currently employed at Hino Motors, Ltd., where he continues to develop innovative solutions for diesel engines. His work has been instrumental in advancing the technology used in modern vehicles, contributing to cleaner and more efficient engine designs.
Collaborations
He collaborates with talented coworkers such as Takashi Suzuki and Haruyuki Yokota, who share his commitment to innovation in the automotive industry.
Conclusion
Kiyohiro Shimokawa's contributions to diesel engine technology through his patents reflect his dedication to improving engine performance and environmental sustainability. His work at Hino Motors, Ltd. continues to influence the future of automotive engineering.