Yuh Yoshii

Title: Yuh Yoshii: Innovator in Air-Fuel Ratio Control Systems

Introduction

Yuh Yoshii is a notable inventor based in Wako, Japan. He has made significant contributions to the field of internal combustion engines, particularly in the area of air-fuel ratio control systems. With a total of 2 patents to his name, Yoshii's work has the potential to enhance engine efficiency and performance.

Latest Patents

Yuh Yoshii's latest patents focus on advanced air-fuel ratio control systems for internal combustion engines. The first patent describes a system that utilizes an air-fuel ratio sensor located in the exhaust system. This sensor detects the air-fuel ratio of exhaust gases emitted from the engine. The system employs a controller based on a recurrence formula type to adjust the fuel supply to the engine. This feedback control mechanism ensures that the air-fuel ratio of the mixture supplied to the engine converges to a desired level, which is determined based on the engine's operating conditions. The desired air-fuel ratio is smoothed when the engine operates under predetermined conditions, allowing for more precise control.

The second patent also addresses air-fuel ratio control for internal combustion engines. It features a sensor that detects the air-fuel ratio of exhaust gases from multiple cylinders. The system estimates the air-fuel ratio of the mixture supplied to each cylinder based on the detected values and a model representing the exhaust passage behavior. A cylinder-by-cylinder control amount is calculated to ensure that the estimated air-fuel ratio converges to the desired level. This innovative approach enhances the feedback control mechanism, improving overall engine performance.

Career Highlights

Yuh Yoshii is currently employed at Honda Giken Kogyo Kabushiki Kaisha, a leading automotive manufacturer. His work at Honda has allowed him to apply his innovative ideas in a practical setting, contributing to the development of more efficient engine technologies.

Collaborations

Yuh Yoshii has collaborated with several talented individuals in his field, including Naohiro Kurokawa and Toru Kitamura. These collaborations have fostered a creative environment that encourages the exchange of ideas and advancements in technology.

Conclusion

Yuh Yoshii's contributions to air-fuel ratio control systems exemplify the importance of innovation in the automotive industry. His patents reflect a commitment to enhancing engine efficiency and performance, making a