Yoshihiro Sakashita

Title: Innovations by Yoshihiro Sakashita

Introduction

Yoshihiro Sakashita is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of gas sensor technology, holding a total of 4 patents. His work primarily focuses on enhancing the functionality and reliability of exhaust gas sensors.

Latest Patents

One of his latest patents is a gas sensor control device. This innovative NOx sensor comprises a pump cell, a monitor cell, and a sensor cell. The pump cell discharges oxygen from the exhaust gas introduced into a chamber. The sensor cell then outputs a detected signal based on the concentration of NOx after the oxygen is discharged. A microcomputer within the sensor control circuit adjusts the amount of oxygen discharged by the pump cell and calculates output change amounts of the cells. This microcomputer also performs a correction of the NOx concentration detected by the sensor cell and diagnoses any deterioration of the sensor cell based on the output change amounts. If the sensor cell current is lower than the monitor cell current, the microcomputer identifies an abnormality in the NOx sensor.

Another significant patent is a heater control device for exhaust gas sensors. This device manages the energization of a heater to preheat the sensor element within a safe temperature range, preventing any element cracks caused by water. The preheating control ensures that the sensor element reaches a predetermined upper limit temperature promptly after the engine starts. Initially, the energization duty of the heater is set to quickly raise the temperature of the sensor element. Once the upper limit temperature is reached, the energization duty is adjusted to maintain this temperature, ensuring the overall sensor element is sufficiently heated during the preheating phase.

Career Highlights

Yoshihiro Sakashita is currently employed at Denso Corporation, a leading company in automotive technology. His work at Denso has allowed him to develop and refine his innovative sensor technologies, contributing to advancements in vehicle emissions control.

Collaborations

Throughout his career, Sakashita has collaborated with notable colleagues, including Ryozo Kayama and Yukihiro Yamashita. These collaborations have fostered a creative environment that has led to the development of cutting-edge technologies in the automotive sector.

Conclusion

Yoshihiro Sakashita's contributions to gas sensor technology have significantly impacted the automotive industry. His innovative patents demonstrate