Hisayo Douta

Title: Hisayo Douta: Innovator in Internal Combustion Engine Technology

Introduction

Hisayo Douta is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of internal combustion engine technology, holding a total of 5 patents. His work focuses on optimizing engine performance through advanced control systems.

Latest Patents

One of Douta's latest patents is a control apparatus for internal combustion engines. This invention aims to optimally suppress the effects of modeling errors that may arise from load fluctuations. By utilizing present and past values of operating and control quantities, Douta's system represents the internal state of the engine's dynamic model. The modeling is performed in real-time, allowing for the calculation of optimal feedback gain under specified conditions.

Another significant patent is the air-fuel ratio control system for internal combustion engines. This system employs a pre-stored standard relation between an air-fuel ratio sensor signal and a standard air-fuel ratio indicative value. It derives a for-control air-fuel ratio indicative value based on this relationship, ensuring efficient engine operation.

Career Highlights

Douta has worked with reputable companies such as Nippondenso Co., Ltd. and Denso Corporation. His experience in these organizations has contributed to his expertise in engine technology and control systems.

Collaborations

Throughout his career, Douta has collaborated with notable colleagues, including Katsuhiko Kawai and Masumi Kinugawa. These partnerships have fostered innovation and advancements in their respective fields.

Conclusion

Hisayo Douta's contributions to internal combustion engine technology through his patents and collaborations highlight his role as a significant innovator in the industry. His work continues to influence advancements in engine performance and efficiency.