Yasuhiro Ohtsubo

Title: Yasuhiro Ohtsubo: Innovator in Internal Combustion Engine Technology

Introduction

Yasuhiro Ohtsubo is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of internal combustion engines, holding two patents that showcase his innovative approach to engine technology.

Latest Patents

Ohtsubo's latest patents include an internal combustion engine and a control method for the same. This invention allows the engine to switch between a low-temperature combustion state, which utilizes a high EGR (Exhaust Gas Recirculation) rate, and a normal combustion state with a low EGR rate. The engine employs a pilot injection in addition to the main fuel injection, with restrictions on pilot injection during low-temperature combustion. Another significant patent is an exhaust emission control device for internal combustion engines. This device features a NOx catalyst capable of lean burn, designed to release and reduce absorbed NOx using a reducing agent. The system includes a load detector to monitor engine load and a reducing agent addition controller to manage the supply of the reducing agent effectively.

Career Highlights

Throughout his career, Ohtsubo has worked with prominent companies, including Toyota Motor Corporation. His work has focused on enhancing engine efficiency and reducing emissions, contributing to advancements in automotive technology.

Collaborations

Ohtsubo has collaborated with talented individuals such as Hiroki Matsuoka and Takekazu Ito, further enriching his innovative endeavors.

Conclusion

Yasuhiro Ohtsubo's contributions to internal combustion engine technology reflect his commitment to innovation and environmental sustainability. His patents demonstrate a forward-thinking approach that addresses both performance and emissions control in modern engines.