Shigenobu Uchiyama

Title: Shigenobu Uchiyama: Innovator in Internal Combustion Engine Technology

Introduction

Shigenobu Uchiyama is a notable inventor based in Iwata, Japan. He has made significant contributions to the field of internal combustion engine technology, holding a total of 4 patents. His innovative designs focus on improving engine performance and efficiency.

Latest Patents

Uchiyama's latest patents include a "Rotation prevention structure of a valve lifter for an internal combustion engine." This invention features several embodiments of anti-rotation devices that prevent the rotation of valve actuating lifters or tappet bodies caused by the action of the cam lobe. Each embodiment achieves the anti-rotation function without adding to the reciprocating masses of the engine. Another significant patent is the "High-low speed range switching type valve mechanism for internal combustion engine." This invention employs variable valve lift mechanisms that utilize rocker arms cooperating with high and low-speed cam lobes. The design allows for selective coupling or uncoupling based on the cam lobe configuration, ensuring no bending loads are placed on the valve stems, thus improving engine performance.

Career Highlights

Uchiyama is currently associated with Yamaha Hatsudoki Kabushiki Kaisha, a leading company in the automotive industry. His work has been instrumental in advancing engine technology, particularly in enhancing the efficiency and performance of internal combustion engines.

Collaborations

Uchiyama has collaborated with notable coworkers such as Masaaki Yoshikawa and Hironao Takahashi. Their combined expertise has contributed to the successful development of innovative engine technologies.

Conclusion

Shigenobu Uchiyama's contributions to internal combustion engine technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence advancements in engine performance and efficiency.