Daisuke Kojima

Title: Daisuke Kojima: Innovator in Gas Detection Technology

Introduction

Daisuke Kojima is a notable inventor based in Nagoya, Japan. He has made significant contributions to the field of gas detection technology, holding 2 patents that showcase his innovative approach to solving complex problems in internal combustion engines and gas concentration detection.

Latest Patents

One of his latest patents is a gas concentration detector designed to prevent deviation in output due to differences in oxygen reactivity between electrode materials. This invention accurately detects specific gas components, such as NOx in exhaust gases. The sensor element in the NOx sensor features a pump cell in a first chamber, a sensor cell for decomposing NOx and remaining oxygen, and a monitor cell for decomposing only the remaining oxygen in a second chamber. The NOx concentration is determined based on the difference in current output between the sensor cell and the monitor cell. By smoothing the output of the monitor cell through a band-pass filter, the responses of both cells are made to substantially match, eliminating any deviation in output.

Another significant patent is a control device and control method for internal combustion engines. This invention addresses the issue of excessive fuel addition to exhaust gases due to abnormalities in the addition agent supply unit. If the exhaust gas air-fuel ratio remains equal to or smaller than a predetermined value for a specified period, the ECU determines that the addition agent supply unit is abnormal. Upon detection, the ECU increases the amount of EGR gas recirculated to the intake side, reduces fuel injection from injectors, and restricts the engine's operational state to a low-speed/low-load condition. Additionally, the ECU activates a warning lamp to alert the driver of the abnormality, ensuring safe vehicle operation.

Career Highlights

Daisuke Kojima has worked with prominent companies in the automotive industry, including Denso Corporation and Toyota Motor Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in automotive technology.

Collaborations

Throughout his career, Kojima has collaborated with talented individuals such as Yasuhiro Kariya and Hiroshi Haraguchi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Daisuke Kojima's contributions to gas detection technology and internal combustion engine control systems highlight his innovative spirit and