Yasuo Tagawa

Title: Yasuo Tagawa: Innovator in Fuel Control Technology

Introduction

Yasuo Tagawa is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of fuel control technology, holding a total of 2 patents. His work focuses on improving the efficiency and safety of fuel systems in vehicles.

Latest Patents

One of Yasuo Tagawa's latest patents is an apparatus for controlling pressure within a fuel tank. This innovative device is designed to manage pressures in a fuel tank through a purge pipe connected to a canister. In the operating condition of an engine, a diaphragm in a control valve moves upward due to intake negative pressure, which decreases the set load of a spring. Conversely, when the engine is stopped, the diaphragm moves downward, increasing the spring's load. This mechanism ensures that the valve member opens when the fuel tank pressure exceeds predetermined levels, effectively preventing excessive evaporated fuel discharge into the atmosphere during engine operation. Additionally, in the stopped condition, the apparatus reduces the amount of evaporated fuel produced, allowing for a more compact canister design.

Another significant patent by Tagawa is related to a reed valve. This valve features a base with one or more apertures for fluid flow, complemented by a shock-absorbing seat that surrounds these apertures. The reed, fixed at one end to the base, moves to close or open the apertures based on pressure changes. The design includes a beveled or curved edge on the seat, enhancing its functionality and efficiency.

Career Highlights

Yasuo Tagawa has worked with prominent companies in the automotive industry, including Nippondenso Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in fuel control systems.

Collaborations

Throughout his career, Tagawa has collaborated with talented individuals such as Takashi Kondo and Kiyohiko Mizuno. These partnerships have contributed to the advancement of his inventions and the overall progress in fuel technology.

Conclusion

Yasuo Tagawa's contributions to fuel control technology through his patents demonstrate his commitment to innovation and efficiency in the automotive sector. His work continues to influence the design and functionality of fuel systems, ensuring a safer and more environmentally friendly approach to vehicle operation.