Company Filing History:
Years Active: 1992-1994
Title: Jiro Shimizu: Innovating Motorcycle Engine Technology from Tokyo
Introduction: Jiro Shimizu is a notable inventor residing in Tokyo, Japan, recognized for his groundbreaking contributions to motorcycle engine technology. With a total of three patents to his name, Shimizu's innovations have advanced the performance and efficiency of four-cycle engines.
Latest Patents: One of Shimizu's latest patents focuses on a four-cycle engine that incorporates an exhaust passage air introduction system. This innovative design features two exhaust passages in each cylinder, which are joined at a point displaced from the engine. The system allows air to be introduced into one of the exhaust passages, enhancing the combustion of unburned gases within the exhaust. This process effectively improves the overall combustion efficiency by also addressing unburned exhaust in the joined passage. Furthermore, this invention includes a chain tensioner for the timing chain that is hydraulically actuated by engine oil. A specifically designed gasket with an orifice is strategically placed between components in the oil passageway extending to the tensioner cylinder, optimizing engine performance. Additionally, an oil cooling system comprising an oil filter and an oil cooler is mounted on a common base, facilitating the efficient direction of oil to each component.
Career Highlights: Throughout his career, Jiro Shimizu has worked with some of the leading companies in the automotive and paper industries, including Honda Giken Kogyo Kabushiki Kaisha and Oji Paper Co., Ltd. His experiences at these organizations have contributed to his expertise and innovation in engineering.
Collaborations: Jiro has had the pleasure of collaborating with several talented coworkers, including Yasuo Shimura and Takahiro Kudoh. These partnerships have fostered a creative environment that has led to significant advancements in automotive technologies.
Conclusion: Jiro Shimizu's dedication to innovation in motorcycle engine technology has positioned him as a valuable inventor in the industry. With a keen focus on enhancing engine efficiency through his patented designs, Shimizu continues to contribute to advancements that play a crucial role in the future of motorcycling.