This inventor holds 4 USPTO granted patents and 1 EPO patent. Top assignees: Hitachi Automotive Systems, Ltd., Hitachi, Ltd.. Active years: 2005-2015.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2005-2015
Title: Fumiaki Nasu: Innovator in Internal Combustion Engine Technology
Introduction
Fumiaki Nasu is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of internal combustion engine technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and performance of engine controllers and electromagnetic valve driving circuits.
Latest Patents
One of Nasu's latest patents is an internal combustion engine controller. This innovative controller allows for a quick drop in the injector current while suppressing heat generation in the drive circuit. This enhancement improves the valve closing response speed of the injector. The controller includes a drive circuit that manages the injector current and a boost circuit that elevates the battery voltage. It features a peak current path, a holding current path, a ground current path, and a regenerating circuit, all designed to optimize the performance of the injector.
Another significant patent is the electromagnetic valve driving circuit. This circuit is designed to reduce the load on the booster circuit. It incorporates a boost driving FET connected to the injector's first terminal and a battery-side driving FET linked to the power supply. The circuit also includes a freewheeling diode and an injector downstream-side driving FET. A control circuit operates the FETs based on the current flowing through the injector, ensuring efficient operation.
Career Highlights
Fumiaki Nasu has worked with prominent companies such as Hitachi Automotive Systems, Ltd. and Hitachi, Ltd. His experience in these organizations has contributed to his expertise in developing advanced technologies for internal combustion engines.
Collaborations
Nasu has collaborated with talented individuals in his field, including Takuya Mayuzumi and Ayumu Hatanaka. Their combined efforts have led to innovative solutions in engine technology.
Conclusion
Fumiaki Nasu's contributions to internal combustion engine technology through his patents and collaborations highlight his role as a significant innovator in the industry. His work continues to influence advancements in engine performance and efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile