Location History:
- Setagaya, JP (1984)
- Shiki, JP (1984 - 1988)
- Saitama, JP (1988 - 1990)
- Wako, JP (1988 - 1993)
Company Filing History:
37 out of 10,092 
1 out of 2,606 
1 out of 182 
Years Active: 1984-1993
Title: Innovations of Toyohei Nakajima in Measurement Technologies
Introduction
Toyohei Nakajima, located in Wako, Japan, is a prolific inventor known for his significant contributions in the field of measurement technologies. With an impressive portfolio of 39 patents, Nakajima has pioneered innovations that enhance the efficiency and accuracy of various systems, particularly in internal combustion engines.
Latest Patents
Two notable patents from Toyohei Nakajima showcase his ingenuity in developing devices for measuring concentration and flow rates.
The first patent is a device for measuring the concentration and flow rate of a mixture of evaporative fuel and air supplied to an internal combustion engine. This innovative system utilizes multiple flowmeters arranged in a purging passage. These flowmeters have varying output characteristics linked to the concentration of the evaporative fuel, allowing for accurate detection of both the fuel concentration and the volumetric flow rate. This data assists in optimizing the air-fuel ratio, ensuring efficient engine performance.
The second patent involves a temperature control device for an oxygen concentration sensor. This device consists of a solid electrolytic member with oxygen ion-conductivity and electrodes which facilitate the variation of oxygen concentration in a gas diffusion-limiting zone. By supplying a pumping current that is adjusted according to the oxygen concentration, the device can effectively monitor and control the concentration of oxygen in the examined gas.
Career Highlights
Throughout his career, Toyohei Nakajima has been associated with Honda Giken Kogyo Kabushiki Kaisha and Honda Giken Kogyo K.K., where he has contributed substantially to research and innovation in vehicle technology. His work has played a vital role in advancing automotive engineering and emissions control systems.
Collaborations
Nakajima has collaborated with notable colleagues in the industry, including Toshiyuki Mieno and Yasushi Okada. These partnerships have fostered an environment of creativity and innovation, allowing for the successful development and execution of his groundbreaking ideas.
Conclusion
Toyohei Nakajima's extensive patent portfolio and instrumental work in measurement technologies reflect his dedication to enhancing operational efficiencies in internal combustion engines. His inventions continue to pave the way for advancements in automotive technology and emissions control, leaving a lasting impact on the industry.