Shingo Shigihama

Title: Shingo Shigihama: Innovator in Evaporation Control Systems

Introduction

Shingo Shigihama is a notable inventor based in Aki-gun, Japan. He has made significant contributions to the field of internal combustion engine technology, particularly in malfunction diagnostic systems. With a total of 4 patents to his name, Shigihama's work focuses on enhancing the efficiency and reliability of evaporation control systems.

Latest Patents

Shigihama's latest patents include a malfunction diagnostic apparatus for an evaporated fuel purge system. This invention is designed to detect abnormalities such as looseness or clogging in the purge line between a purge valve and an engine intake passage. The apparatus operates by turning on an electric pump when the purge valve is closed and the selector valve is open. It measures load current values to determine the gaseous communication state in the purge line. If the load current final value is equal to or less than the initial value, the system is deemed normal. Conversely, if the final values exceed the initial value, it indicates an abnormal state, which can be further classified as either an open-air state or a clogging state based on specific thresholds.

Another significant patent is the failure diagnosis system for the evaporation control system. This system repeatedly introduces pressure into the evaporation control system and hermetically seals it. By detecting changes in internal pressure, the system can identify potential fuel vapor leaks. If the internal pressure change exceeds a specified value, the diagnosis process is interrupted, ensuring accurate assessments of system integrity.

Career Highlights

Shingo Shigihama is currently employed at Mazda Motor Corporation, where he applies his expertise in developing innovative solutions for automotive technologies. His work has contributed to advancements in vehicle performance and environmental sustainability.

Collaborations

Shigihama collaborates with talented colleagues, including Tetsushi Hosokai and Katsuhiko Sakamoto. Their combined efforts foster a creative environment that drives innovation within the company.

Conclusion

Shingo Shigihama's contributions to the field of evaporation control systems exemplify the importance of innovation in automotive technology. His patents not only enhance engine performance but also promote environmental responsibility.