Hajime Kishida

Title: Hajime Kishida: Innovator in Engine Technology

Introduction

Hajime Kishida is a prominent inventor based in Iwata, Japan, known for his significant contributions to engine technology. With a total of six patents to his name, Kishida has made remarkable advancements in the field of internal combustion engines and gas filling apparatuses.

Latest Patents

One of his latest patents is a fast fill method and apparatus designed for filling receiving vessels with compressed gas. This innovative filling apparatus lowers the temperature of the compressed gas in response to the filling pressure of the receiving vessel. As the internal pressure within the vessel approaches a filled state, the temperature of the gas is reduced to counteract the heat generated by increasing pressure. This is achieved by slowing the compressor and allowing the gas to dwell longer within a heat exchanger between compression stages. Additionally, the efficacy of the heat exchanger is enhanced by increasing the airflow rate over it. This technology allows for variable engine speed, fan speed, and compressor speed to effectively reduce the temperature of the compressed gases being introduced into the receiving vessel.

Another notable patent is an apparatus and method for implementing lean-burn control of internal combustion engines. This invention includes an exhaust pressure sensor that measures the exhaust pressure in the engine's exhaust system, particularly during lean combustion. It features a decision mechanism to determine if misfiring occurs based on the measured exhaust pressure. A control unit then adjusts the fuel/air ratio of the intake mixed gas to accurately detect and prevent misfiring, achieving super-lean burn control.

Career Highlights

Hajime Kishida is currently employed at Yamaha Hatsudoki Kabushiki Kaisha, a leading company in the field of engine manufacturing. His work has significantly impacted the efficiency and performance of internal combustion engines, making him a valuable asset to the company.

Collaborations

Kishida has collaborated with notable coworkers, including Takeo Yoshida and Hisayuki Sugano, contributing to various innovative projects within the company.

Conclusion

Hajime Kishida's contributions to engine technology through his patents and work at Yamaha Hatsudoki Kabushiki Kaisha highlight his role as a key innovator in the field. His advancements in gas filling methods and lean-burn control systems continue to influence the industry positively.