Yukio Suehiro

Title: Innovations by Yukio Suehiro

Introduction

Yukio Suehiro is a notable inventor based in Wako, Japan. He has made significant contributions to the field of internal combustion engines, holding three patents that showcase his innovative approach to improving engine performance and emissions control.

Latest Patents

One of his latest patents is an air-fuel ratio control system for internal combustion engines. This system features a catalyst that purifies exhaust gases, utilizing a first oxygen sensor upstream and a second oxygen sensor downstream of the catalyst. The intake air flow rate is detected, and the amount of oxygen flowing into the catalyst is calculated using the oxygen concentration detected by the first sensor and the intake air flow rate. The air-fuel ratio is alternately controlled to lean and rich by comparing the calculated oxygen amount with target values. Additionally, a rich oxygen amount and a lean oxygen amount are calculated, and a correction amount for the first sensor output is determined based on these values.

Another significant patent is a deterioration detecting apparatus for a catalyst in an exhaust system of an engine. This apparatus includes a first oxygen concentration sensor upstream and a second oxygen concentration sensor downstream of the catalyst. The amount of oxygen flowing into the catalyst is calculated from the oxygen concentration detected by the first sensor and the intake air flow rate. The control command value of the air-fuel ratio is alternately switched between lean and rich values based on the comparison of the calculated inflowing oxygen amount with target values. The deterioration degree of the catalyst is detected based on the output of the second sensor during the switching process.

Career Highlights

Yukio Suehiro is currently employed at Honda Motor Co., Ltd., where he continues to innovate and develop advanced technologies for internal combustion engines. His work has significantly contributed to Honda's reputation for engineering excellence and environmental responsibility.

Collaborations

He has collaborated with notable coworkers such as Jun Iida and Hidetaka Maki, contributing to a dynamic team focused on pushing the boundaries of automotive technology.

Conclusion

Yukio Suehiro's innovative patents and contributions to Honda Motor Co., Ltd. highlight his expertise in engine technology and emissions control. His work continues to influence the automotive industry and drive advancements in sustainable engineering practices.