Yuh Motoyama

Title: Yuh Motoyama: Innovator in Engine Technology

Introduction

Yuh Motoyama is a notable inventor based in Iwata, Japan. He has made significant contributions to the field of internal combustion engines, particularly through his innovative patent.

Latest Patents

Motoyama holds a patent for an exhaust timing control device designed for two-cycle engines. This invention features an exhaust port controlling arrangement that includes both main and auxiliary exhaust ports. A main control valve works in conjunction with the main exhaust port to adjust the timing of its opening based on engine speed. Additionally, an on/off auxiliary control valve is strategically placed in a passage leading from the auxiliary exhaust port, allowing for the regulation of flow in response to specific engine conditions. This design also incorporates mechanisms that delay the opening of the main exhaust port when the auxiliary exhaust ports are activated, thereby enhancing the engine's power and torque curves.

Career Highlights

Motoyama is currently employed at Yamaha Motor Corporation, a leading company in the automotive and motorcycle industry. His work focuses on improving engine performance and efficiency through innovative engineering solutions.

Collaborations

Throughout his career, Motoyama has collaborated with talented individuals such as Takafumi Fukuda and Yoshihiko Moriya. These partnerships have contributed to the advancement of engine technology and the successful development of new inventions.

Conclusion

Yuh Motoyama's contributions to engine technology, particularly through his patent for an exhaust timing control device, highlight his innovative spirit and dedication to improving engine performance. His work at Yamaha Motor Corporation and collaborations with other professionals further emphasize his impact in the field.