Kiyoshi Akutsu

Title: Kiyoshi Akutsu: Innovator in Automatic Transmission Technology

Introduction

Kiyoshi Akutsu is a notable inventor based in Anjo, Japan, recognized for his contributions to automatic transmission technology. With a total of three patents to his name, Akutsu has made significant advancements in the field, particularly in enhancing the efficiency and performance of automatic transmissions.

Latest Patents

One of Akutsu's latest patents is a shift control apparatus for automatic transmission. This invention allows an automatic transmission to achieve a desired shift through an initial stage shift, where a first engagement element is released and a third engagement element is engaged. The final stage shift involves the release of a second engagement element and the engagement of a fourth engagement element. The control apparatus estimates the rotation acceleration for the transmission input shaft based on input torque and input torque rotation acceleration speed. This innovation effectively prevents shifting delays and degradation during the transition between stages by ensuring continuous transmission of input rotation changes.

Another significant patent is the speed-change control apparatus for automatic transmission. This invention aims to eliminate the feeling of two-phase speed-change operations by enabling a continuous speed-change operation through two-phase control of engagement and release of four engagement elements. The control apparatus sets a target rotational acceleration for the input shaft of the transmission, facilitating a smooth transition from the pre-phase to the post-phase speed-change operation. This continuous change in input speed prevents bluntness during the transition, enhancing the overall driving experience.

Career Highlights

Kiyoshi Akutsu has built a successful career at Aisin Aw Co., Ltd., a company renowned for its automotive components and systems. His work has significantly contributed to the advancement of automatic transmission technologies, making him a key figure in the industry.

Collaborations

Throughout his career, Akutsu has collaborated with notable colleagues, including Masaaki Nishida and Hiroshi Tsutsui. These collaborations have fostered innovation and development in automatic transmission technology.

Conclusion

Kiyoshi Akutsu's contributions to automatic transmission technology through his innovative patents have made a lasting impact on the automotive industry. His work continues to influence the design and functionality of automatic transmissions, showcasing the importance of innovation in engineering.