Keita Naito

Title: Keita Naito: Innovator in Engine Exhaust Treatment Technology

Introduction

Keita Naito is a prominent inventor based in Sakai, Japan. He has made significant contributions to the field of engine exhaust treatment technology. With a total of 4 patents to his name, Naito's work focuses on improving the efficiency and effectiveness of exhaust purification systems.

Latest Patents

One of Naito's latest inventions is an engine exhaust treatment device. This device is capable of combusting particulate matter (PM) accumulated in a diesel particulate filter (DPF) or activating an exhaust purification catalyst immediately after engine startup or during light load operation. The design includes a combustible gas supply passage that communicates with an exhaust passage upstream of a combustion catalyst. An air supply unit and an ignition unit are integrated into this supply passage and are controlled by a control unit. When the exhaust temperature is below a predetermined level, the control unit activates the air supply unit to introduce air to the combustible gas, igniting it and creating flame combustion. This process raises the temperature of the exhaust in the exhaust passage, enhancing the treatment of exhaust gases.

Another notable patent is an exhaust treatment device specifically designed for diesel engines. This device burns combustible gas with oxygen present in the exhaust, using the combustion heat to increase the exhaust temperature. This heat effectively burns and removes PM accumulating in the DPF. The design features a heater that radiates heat at the start of combustible gas generation, along with a liquid fuel retaining member that surrounds the heater. A guide plate is also included to direct the air-fuel mixture flowing down in the liquid fuel retaining member.

Career Highlights

Keita Naito is currently employed at Kubota Corporation, where he continues to innovate in the field of engine technology. His work has been instrumental in advancing the efficiency of exhaust treatment systems, contributing to cleaner and more sustainable engine operations.

Collaborations

Naito collaborates with talented colleagues, including Takashi Onishi and Toshio Nakahira. Their combined expertise fosters a creative environment that drives innovation in their projects.

Conclusion

Keita Naito's contributions to engine exhaust treatment technology exemplify his commitment to innovation and sustainability. His patents reflect a deep understanding of engineering principles and a dedication to improving environmental outcomes.