This inventor holds 4 USPTO granted patents and 1 published patent application, plus 1 CIPO patent and 5 EPO patents. Top assignee: Yanmar Co., Ltd.. Active years: 2017-2020.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2017-2020
Title: Innovations by Hiroyuki Otsubo
Introduction
Hiroyuki Otsubo is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of gas engines, holding a total of 4 patents. His work focuses on improving the efficiency and control of air-fuel ratios in gas engines.
Latest Patents
Otsubo's latest patents include innovative designs for gas engines that enhance their performance. One of his patents describes a gas engine that controls the air-fuel ratio in response to changes in the composition of fuel gas. This engine features an A/F valve, a solenoid valve, and a control unit that performs perturbation using the solenoid valve. The control unit sets a relationship between the air-fuel ratio and the respective opening degrees of the solenoid valve and the A/F valve under specific engine operation conditions using standard fuel gas. During stable engine operation, if the average opening degree of the solenoid valve deviates from the target value set in the control unit, the control unit adjusts the opening degree of the A/F valve to match the target value.
Another patent focuses on engines capable of controlling the air-fuel ratio in response to rapid changes in the calorific value of a fuel gas. This design includes a control unit that closes the A/F valve when the average opening degree of the solenoid valve is below a preset target and opens the A/F valve when it meets or exceeds the target. Additionally, if the solenoid valve reaches upper or lower limit opening degrees over a predetermined number of times, the control unit compares these limits against the target opening degree to manage the A/F valve accordingly.
Career Highlights
Hiroyuki Otsubo is currently employed at Yanmar Co., Ltd., where he continues to innovate in the field of gas engine technology. His work has contributed to advancements in engine efficiency and performance, making a significant impact in the industry.
Collaborations
Otsubo has collaborated with notable colleagues such as Kazuma Kishio and Yoshinori Mizukami. Their teamwork has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Hiroyuki Otsubo's contributions to gas engine technology through his patents demonstrate his commitment to innovation and efficiency. His work continues to influence the industry and pave the way for future advancements in
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile