Company Filing History:
Years Active: 2002-2015
Title: Innovations of Tadao Hirai: A Pioneer in Drive System Control Devices
Introduction: Tadao Hirai, an accomplished inventor based in Osaka, Japan, holds four patents focused on enhancing the efficiency and performance of working vehicles. His innovative contributions have significantly impacted the field of vehicle engineering, particularly in the area of engine control systems.
Latest Patents: Among Hirai's latest patents are two advancements in drive system control devices for working vehicles. The first patent introduces a system that allows for engine downsizing while maintaining output torque in low rotating regions of the engine without the need for superchargers. This invention incorporates a common rail type fuel injection device and a continuously variable transmission, ensuring that vehicle speed remains consistent regardless of changes in engine rotation speeds.
The second patent addresses the issue of exhaust gas purification in engines operating at low-speed and low-torque conditions. By adjusting the engine operating point to a high-speed, low-torque zone capable of self-renewing the exhaust gas purification device, his invention helps enhance vehicle performance while maintaining environmental standards. This required the careful regulation of the continuously variable transmission's gear ratio to keep the vehicle speed unchanged.
Career Highlights: Tadao Hirai has built a notable career collaborating with well-known industry players. He has worked for Yanmar Co., Ltd. and Kanzaki Kokyukoki Manufacturing Company, contributing his expertise and innovative mindset to develop advanced machinery and systems. His work has significantly influenced the way working vehicles operate, focusing on efficiency and sustainability.
Collaborations: Throughout his career, Hirai has partnered with several talented individuals, including Takeshi Oouchida and Keiichirou Yuzaki. Their collective experience and innovative approaches have helped drive the creation of groundbreaking technologies in vehicle engineering.
Conclusion: Tadao Hirai's inventive spirit and dedication to improving drive system control devices are evident through his patents and collaborations. His contributions to the field significantly enhance the functionality and environmental compliance of working vehicles, securing his legacy as a prominent inventor in the automotive industry.