This inventor holds 11 USPTO granted patents and 4 EPO patents. Top assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation. Active years: 2007-2012.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Anjyo, JP (2008)
- Toyota, JP (2007 - 2012)
Company Filing History:
11 out of 38,912 
5 out of 20,407 
Years Active: 2007-2012
Title: Yasuhiko Otsubo: Innovator in Fuel Injection Technology
Introduction
Yasuhiko Otsubo is a prominent inventor based in Toyota, Japan. He has made significant contributions to the field of internal combustion engines, particularly in fuel injection technology. With a total of 11 patents to his name, Otsubo's work has had a substantial impact on automotive engineering.
Latest Patents
One of his latest patents is a fuel injection device and control method designed for internal combustion engines. This device features a fuel injection valve that injects fuel directly into the combustion chamber, along with a supercharger and an exhaust purification device. The system executes post-injection separately from the main fuel injection for torque generation. It includes an air amount sensor located upstream of the supercharger and a pressure sensor downstream. A correction term is calculated based on the air pressure changes detected by the pressure sensor, which helps set an upper-limit injection amount based on various engine parameters.
Another notable patent is an exhaust gas purification system for internal combustion engines. This system includes a differential pressure sensor that detects changes in pressure when an exhaust throttle valve transitions from an OFF to an ON state during filter regeneration. The system calculates an increase in exhaust backpressure, determining if the throttle valve is malfunctioning based on predetermined values.
Career Highlights
Otsubo has worked with notable companies in the automotive industry, including Toyota Motor Corporation and Denso Corporation. His experience in these organizations has allowed him to develop innovative solutions that enhance engine performance and reduce emissions.
Collaborations
Throughout his career, Otsubo has collaborated with talented individuals such as Tatsuhisa Yokoi and Shigehiro Matsuno. These partnerships have contributed to the advancement of technology in the automotive sector.
Conclusion
Yasuhiko Otsubo's contributions to fuel injection technology and exhaust gas purification systems have established him as a key figure in automotive innovation. His patents reflect a commitment to improving engine efficiency and environmental sustainability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile