Tsumayoshi Motoyoshi

Title: Tsumayoshi Motoyoshi: Innovator in Fuel Injection Technology

Introduction

Tsumayoshi Motoyoshi is a notable inventor based in Higashimatsuyama, Japan. He has made significant contributions to the field of fuel injection technology, particularly through his innovative designs and patents. His work has been instrumental in enhancing the efficiency and performance of fuel injection systems.

Latest Patents

Motoyoshi holds a patent for a two-stage fuel injection pump with a second stage located in the first. This design features a low-pressure side fuel path that extends from a fuel inflow port to a feed pump. The system includes a chamber that can communicate with an inflow/outflow port, which is formed by partitioning inside a housing. The innovative use of a cam ring, shoes, and rollers in the low-pressure side fuel path allows for the induction of low-pressure, low-temperature fuel into the area surrounding the rollers. This design effectively cools the area around the rollers, reduces cam jump, and improves the efficiency of fuel intake.

Career Highlights

Motoyoshi is currently employed at Zexel GmbH, where he continues to develop advanced fuel injection technologies. His expertise and innovative approach have positioned him as a key figure in the automotive engineering sector.

Collaborations

Throughout his career, Motoyoshi has collaborated with talented professionals such as Kenichi Kubo and Jun Matsubara. These collaborations have fostered a creative environment that has led to the development of cutting-edge technologies in fuel injection systems.

Conclusion

Tsumayoshi Motoyoshi's contributions to fuel injection technology exemplify the impact of innovative thinking in engineering. His patent and ongoing work at Zexel GmbH highlight his commitment to advancing automotive technology. His achievements serve as an inspiration for future inventors in the field.