Ryu Hariyoshi is a notable inventor based in Auburn Hills, MI (US). He has made significant contributions to the field of automotive technology, particularly in the area of diesel oxidation catalysts. With a total of 2 patents to his name, Hariyoshi's work focuses on enhancing the efficiency and performance of diesel engines.

Latest Patents

One of Ryu Hariyoshi's latest patents is titled "Increased exhaust temperature warm-up for a rapid light-off of a close-coupled diesel oxidation catalyst." This innovative method aims to generate rapid light-off for a diesel oxidation catalyst (DOC) that is closely coupled to a compression-ignition engine. The process involves starting the engine to commence a warm-up and regulating the throttle to restrict the supply of intake airflow to the combustion chamber. Additionally, it includes injecting a predetermined amount of fuel into the combustion chamber during the engine's exhaust cycle, allowing the injected fuel to be carried by the exhaust gas and burned in the exhaust passage. This method effectively increases the temperature of the exhaust gas, facilitating rapid light-off of the close-coupled DOC.

Another patent focuses on an exhaust system that includes a selective catalytic reduction (SCR) unit and a NO absorber, which may consist of a lean NO trap (LNT). The NO absorber is designed to absorb NO and subsequently release the absorbed NO into the SCR unit, where it is converted into nitrogen and water. These advancements reflect Hariyoshi's commitment to improving diesel engine performance and reducing emissions.

Career Highlights

Ryu Hariyoshi is currently employed at GM Global Technology Operations, Inc., where he continues to innovate and develop new technologies. His work has been instrumental in advancing the automotive industry, particularly in the realm of emissions control and engine efficiency.

Collaborations

Throughout his career, Hariyoshi has collaborated with talented individuals such as Shouxian Ren and Ping Ge. These partnerships have contributed to the successful development of his patented technologies and have fostered a collaborative environment for innovation.

Conclusion

Ryu Hariyoshi is a distinguished inventor whose work in diesel oxidation catalyst technology has made a significant impact on the automotive industry. His innovative patents and dedication to improving engine performance highlight his role as a key player in the field.

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