Location History:
- Katsuta, JP (1985 - 1992)
- Ibaraki, JP (1989 - 1992)
Company Filing History:
5 out of 42,526 
4 out of 152 Years Active: 1985-1992
Title: Eiji Hamashima: Innovator in Fuel Injection Technology
Introduction
Eiji Hamashima is a notable inventor based in Ibaraki, Japan, recognized for his contributions to fuel injection technology. With a total of 5 patents to his name, Hamashima has made significant advancements in the field, particularly in the design and functionality of fuel injection valves.
Latest Patents
One of Hamashima's latest inventions is a fuel injection valve that features a valve member designed to be controllably movable in an axial direction. This innovation allows for precise control of fuel flow from a port downstream of the valve seat. The valve includes an axial fuel passage that produces a substantially non-swirling fuel flow, while a transverse fuel passage creates a swirling fuel flow. This combination results in finer fuel droplets and improved distribution. Another significant patent is the electromagnetic fuel injection valve, which enhances atomization characteristics by optimizing the area of the annular gap formed by a ball valve and valve seat.
Career Highlights
Throughout his career, Eiji Hamashima has worked with prominent companies such as Hitachi, Ltd. and Hitachi Automotive Engineering Co., Ltd. His experience in these organizations has contributed to his expertise in fuel injection systems and related technologies.
Collaborations
Hamashima has collaborated with notable colleagues, including Yoshio Okamoto and Haruo Watanabe. These partnerships have likely fostered innovation and development in their respective fields.
Conclusion
Eiji Hamashima's work in fuel injection technology exemplifies the impact of innovative thinking in engineering. His patents reflect a commitment to improving fuel efficiency and performance in automotive applications.