Kouji Hadama

Title: Innovations of Kouji Hadama in Engine Control Technologies

Introduction

Kouji Hadama is a notable inventor based in Hiroshima, Japan, recognized for his contributions to engine control technologies. With a total of five patents to his name, Hadama has made significant advancements in the field of automotive engineering, particularly in the area of fuel injection and combustion control.

Latest Patents

Hadama's latest patents include an engine control device, an engine control method, and an engine system. The engine control device features a controller designed to manage a fuel injection valve and a fuel pressure adjustment mechanism. This innovative controller integrates a deposition amount of deposits per unit time and estimates the deposition amount on the injection hole of the fuel injection valve. When the estimated deposition amount exceeds a predetermined value, the controller increases the fuel pressure and adjusts the unit deposition amount based on the fuel injection timing. Furthermore, the controller ensures that the unit deposition amount decreases when the fuel injection timing is set to a second timing further away from the top dead center of the piston.

Another significant patent is the control device for a compression ignition engine. This device regulates partial compression ignition combustion of an air-fuel-lean mixture gas within a specific range of low engine load. In this range, normal ignition occurs with sparks generated late in the compression stroke or early in the expansion stroke, while preceding ignition is initiated earlier than normal ignition. Fuel is injected at a timing that ensures its presence before the preceding ignition inside the combustion chamber.

Career Highlights

Kouji Hadama has worked with prominent companies in the automotive industry, including Mazda Motor Corporation. His experience at Mazda has allowed him to apply his innovative ideas and contribute to the development of advanced engine technologies.

Collaborations

Hadama has collaborated with notable colleagues such as Masataka Sumita and Takuya Ohura. Their teamwork has fostered an environment of innovation and creativity, leading to the successful development of new technologies in engine control.

Conclusion

Kouji Hadama's work in engine control technologies showcases his expertise and commitment to innovation in the automotive field. His patents reflect a deep understanding of engine dynamics and a drive to improve fuel efficiency and performance.