Fumio Sanezawa

Title: Fumio Sanezawa: Innovator in Engine Technology

Introduction

Fumio Sanezawa is a notable inventor based in Yokosuka, Japan. He has made significant contributions to the field of engine technology, holding a total of 4 patents. His work primarily focuses on improving the efficiency and performance of internal combustion engines.

Latest Patents

One of Sanezawa's latest patents is a coolant temperature control system for internal combustion engines. This system includes a thermostat located in a coolant passageway leading to a radiator. The thermostat is connected to a diaphragm actuator, allowing the valve opening temperature to be adjusted based on engine loads. Additionally, the thermostat valve opens in response to the discharge pressure of a coolant pump, which helps lower the opening temperature during high-speed engine operation.

Another significant patent is the secondary air supply system. This system features a reed-type valve that is secured on the outer surface of the engine air filter assembly. The valve supplies secondary air to the exhaust system of the engine. It is fluidly connected to an air induction passage within the air filter assembly, and a resonance chamber is formed inside the casing to reduce low-frequency exhaust noise transmitted through the reed valve.

Career Highlights

Fumio Sanezawa is currently employed at Nissan Motor Company Limited, where he continues to innovate in engine technology. His work has contributed to advancements in automotive engineering, enhancing vehicle performance and efficiency.

Collaborations

Sanezawa has collaborated with notable colleagues, including Kenji Yoneda and Yasuo Takagi. Their combined expertise has fostered a creative environment that promotes innovative solutions in engine design.

Conclusion

Fumio Sanezawa's contributions to engine technology through his patents demonstrate his commitment to innovation. His work at Nissan Motor Company Limited continues to influence the automotive industry positively.