Location History:
- Fuji, JP (2010)
- Atsugi, JP (2020)
Company Filing History:
Years Active: 2010-2020
Title: Innovations by Hiroki Kumashiro
Introduction
Hiroki Kumashiro is a notable inventor based in Atsugi, Japan. He has made significant contributions to the field of automotive technology, particularly in the area of transmission control systems. With a total of two patents to his name, Kumashiro's work has had a considerable impact on the efficiency and performance of automatic transmissions.
Latest Patents
Kumashiro's latest patents include a "Control device of continuously variable transmission" and a "Control method of continuously variable transmission." The first patent describes a controller that performs shift control of the transmission, ensuring that the actual pressure of a primary pressure aligns with an indicating pressure. This controller features a phase advance compensator that adjusts the indicating pressure based on various factors, such as the rotation speed of a primary pulley and input torque to a secondary pulley. The second patent, an "Automatic transmission control system," focuses on varying the timing of shifts to enhance response in engagement pressure while minimizing hydraulic pressure vibrations at low temperatures. This system includes a regulation section that selectively controls engagement-pressure regulator valves based on oil temperature and shift conditions.
Career Highlights
Kumashiro is currently employed at Jatco Corporation, a leading company in the automotive transmission industry. His work at Jatco has allowed him to develop innovative solutions that improve the functionality and reliability of transmission systems. His expertise in this field has positioned him as a valuable asset to the company.
Collaborations
Throughout his career, Kumashiro has collaborated with several talented individuals, including Hideharu Yamamoto and Kenichi Kaizu. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies in automotive engineering.
Conclusion
Hiroki Kumashiro's contributions to the field of automotive technology through his patents and work at Jatco Corporation highlight his innovative spirit and dedication to improving transmission systems. His advancements continue to influence the industry and pave the way for future innovations.