Location History:
- Asaka, JA (1976 - 1977)
- Asaki, JP (1980)
- Saitama, JP (1984 - 1991)
- Asaka, JP (1979 - 1992)
Company Filing History:
23 out of 10,092 
1 out of 57 Years Active: 1976-1992
Title: Shizuo Yagi – Innovator in Internal Combustion Engine Technology
Introduction
Shizuo Yagi, hailing from Asaka, Japan, is a prolific inventor with a remarkable portfolio of 24 patents. His work has significantly advanced the field of internal combustion engines, showcasing innovative designs that enhance engine efficiency and performance.
Latest Patents
Among his latest patents are groundbreaking inventions related to valve driving mechanisms for internal combustion engines. One notable patent outlines a valve drive system that incorporates mechanisms for varying the timing and lift of intake and exhaust valves. This design features separate intake and exhaust camshaft support members that pivot about axes relative to the rocker arms, allowing precise adjustments in valve timing and lift. Various configurations enable intake valve closure before bottom dead center during partial load operation, showcasing flexibility in engine performance.
Another significant patent details a valve train specifically tailored for a four-cycle, double overhead camshaft type internal combustion engine. This invention includes apparatus that allows movable support for camshafts, enabling independent displacement relative to the rocker arms. This adaptability ensures optimal engine operating characteristics across diverse operating conditions, responding to factors like rotational speed, and providing a method for effective valve operation based on the described control system.
Career Highlights
Shizuo Yagi has made substantial contributions to the automotive industry, particularly through his tenure at notable companies. He has worked with Honda Giken Kogyo Kabushiki Kaisha, known simply as Honda, where he applied his innovative ideas to developing cutting-edge engine technologies. His work has helped in pushing the boundaries of engine design and performance.
Collaborations
Throughout his career, Yagi collaborated with esteemed colleagues such as Isao Fujii and Hiroshi Kogure. Their collective efforts have played a significant role in refining engine technologies and enhancing performance standards within the industry.
Conclusion
Shizuo Yagi stands out as a key figure in the realm of internal combustion engine innovation. His numerous patents reflect a commitment to enhancing engine performance through intelligent design and engineering. His collaborations and career milestones signify a dedication to advancing automotive technology, making him an influential inventor in the automotive field.