Yasuo Harada

Title: Innovations by Yasuo Harada in Diesel Engine Technology

Introduction

Yasuo Harada is a notable inventor based in Toyota, Japan, recognized for his contributions to diesel engine technology. With a total of six patents to his name, Harada has made significant advancements in the field, particularly in improving engine performance and efficiency.

Latest Patents

One of Harada's latest patents is focused on a vehicle diesel engine and its control method. This innovative diesel engine features a PM filter in its exhaust passage and a fuel injection valve that performs post fuel injection in addition to primary fuel injection. This design aims to supply fuel to the PM filter, thereby maintaining its purification performance. Additionally, the engine is equipped with an oil level sensor that detects the degree of dilution of engine oil. An indicator lamp is activated to signal when the engine oil requires changing, based on the dilution level detected by the sensor. Notably, the vehicle diesel engine allows for post fuel injection even after the indicator lamp is turned on, until the vehicle has traveled a predetermined distance.

Another significant patent by Harada is an abnormality detection apparatus and method for the oil level sensor. This apparatus is designed to detect abnormalities in an oil level sensor that has both lower and upper oil level detectors. It includes a recording portion that captures the output of the upper oil level detector before the internal combustion engine starts. The determining portion assesses whether the upper oil level detector is functioning correctly by comparing the recorded output with the current readings after the engine has started.

Career Highlights

Yasuo Harada has dedicated his career to advancing automotive technology at Toyota Jidosha Kabushiki Kaisha. His work has not only contributed to the efficiency of diesel engines but has also enhanced the overall performance and reliability of vehicles.

Collaborations

Throughout his career, Harada has collaborated with esteemed colleagues such as Tomihisa Oda and Takao Fukuma. These collaborations have fostered an environment of innovation and have led to the development of groundbreaking technologies in the automotive sector.

Conclusion

Yasuo Harada's contributions to diesel engine technology exemplify the impact of innovative thinking in the automotive industry. His patents reflect a commitment to improving engine performance and ensuring environmental sustainability. Harada's work continues to influence the future of automotive engineering.