Location History:
- Tokyo, JP (1981)
- Yokosuka, JP (1984 - 1988)
Company Filing History:
5 out of 13,411 
1 out of 42,508 
Years Active: 1981-1988
Title: **Eiichi Ohnishi: A Pioneer in Internal Combustion Engine Technology**
Introduction
Eiichi Ohnishi, an inventive mind hailing from Yokosuka, Japan, has made significant contributions to the field of internal combustion engine technology. With five patents to his name, Ohnishi's innovative solutions aim to enhance the efficiency and performance of automotive engineering.
Latest Patents
Ohnishi's latest patents include an air/fuel ratio detecting apparatus for internal combustion engines. This invention involves a sophisticated A/F ratio sensor that detects the concentration of residual oxygen in exhaust gases. By incorporating an additional air introducing device, the invention allows for accurate A/F ratio detection without the influence of aging deterioration in oxygen concentration detection.
Another noteworthy patent is his fuel supply system, which features a primary and secondary passage positioned in parallel between an air cleaner and the intake manifold's branch passage. The unique design of a laval nozzle permits airflow at the speed of sound even under low-speed, low-load conditions, ensuring efficient fuel delivery. The meticulous engineering behind Ohnishi's systems showcases his commitment to innovation in engine performance.
Career Highlights
Eiichi Ohnishi has held pivotal roles at notable companies, including Nissan Motor Company Limited and Hitachi, Ltd. His work in these esteemed organizations has allowed him to channel his creative ideas into practical applications, significantly impacting the automotive industry.
Collaborations
Throughout his career, Ohnishi has collaborated with talented individuals, including Tadahiro Yamamoto and Tadashi Nagai. These partnerships have fostered a collaborative spirit that has further enhanced the innovative efforts behind his patents.
Conclusion
In conclusion, Eiichi Ohnishi's contributions to internal combustion engine technology not only embody his inventive spirit but also reflect the potential for innovation in automotive engineering. As he continues to develop new technologies, Ohnishi remains a key figure in advancing the capabilities of internal combustion engines, inspiring future inventors and engineers alike.