Company Filing History:
Years Active: 2008-2011
Title: Tomoyuki Shigefuji: Innovator in Combustion Control Technology
Introduction
Tomoyuki Shigefuji is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of combustion control technology, particularly in direct-injection spark-ignition internal combustion engines. With a total of 2 patents, his work focuses on enhancing engine efficiency and performance.
Latest Patents
Shigefuji's latest patents include a combustion control apparatus designed for direct-injection spark-ignition internal combustion engines. This apparatus is configured to select an extremely retarded combustion mode during specific operating states of the engine. In this mode, ignition timing is set to occur after the compression top dead center, while fuel injection timing is adjusted to occur before ignition timing and after compression top dead center. Additionally, the apparatus inhibits this combustion mode when the exhaust purifier is in a predetermined cold state.
Another significant patent involves a control apparatus and method for an inner cylinder direct injection spark ignited internal combustion engine. This invention utilizes a fuel injection valve to directly inject fuel into the engine cylinder. The method executes a super retard combustion strategy, setting ignition timing after the compression stroke top dead center and injecting fuel before this timing. This approach aims to decrease fuel injection quantity immediately after engine start when fuel pressure is relatively low.
Career Highlights
Tomoyuki Shigefuji is currently employed at Nissan Motor Company Limited, where he continues to innovate in the automotive sector. His work has been instrumental in developing advanced combustion technologies that contribute to more efficient engine designs.
Collaborations
Shigefuji has collaborated with notable colleagues, including Tomoyuki Takeda and Akira Nakajima. These partnerships have fostered a collaborative environment that enhances innovation and drives technological advancements within the company.
Conclusion
Tomoyuki Shigefuji's contributions to combustion control technology exemplify his commitment to improving engine performance and efficiency. His patents reflect a deep understanding of engine dynamics and a dedication to innovation in the automotive industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.