Yoshifumi Hase

Title: Innovations by Yoshifumi Hase

Introduction

Yoshifumi Hase is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of internal combustion engine technology, holding a total of five patents. His work focuses on improving the efficiency and performance of engine coolant systems.

Latest Patents

One of his latest patents is a coolant temperature control system for internal combustion engines. This system includes a thermostat located in the 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 a system for controlling the coolant temperature of an internal combustion engine. This system features means for detecting the engine's operating conditions and setting a target coolant temperature accordingly. It also includes a flow control valve in the coolant recirculating passage and feedback control mechanisms to adjust the actual coolant temperature toward the target.

Career Highlights

Yoshifumi Hase is currently employed at Nissan Motor Company Limited, where he continues to innovate and develop advanced technologies for automotive applications. His expertise in engine systems has made him a valuable asset to the company.

Collaborations

He has collaborated with notable colleagues such as Shinichi Nagumo and Yasuo Nakajima, contributing to various projects and advancements in engine technology.

Conclusion

Yoshifumi Hase's work in developing innovative coolant temperature control systems has significantly impacted the automotive industry. His patents reflect a commitment to enhancing engine performance and efficiency.