Kizuku Ohtsubo is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of internal combustion engine technology, particularly in the development of electric valve drive devices. With a total of seven patents to his name, Ohtsubo's work has been instrumental in enhancing engine performance and efficiency.

Latest Patents

Ohtsubo's latest patents include a method of controlling an electric valve drive device and a control system for a poppet valve. This innovative design allows the valve stem to move up and down, effectively opening and closing a valve port in vehicles' internal combustion engines. The system utilizes a moving coil wound on a bobbin attached to the valve stem, with a magnet fixed to a yoke on the cylinder head. A series of sensors monitor the engine's working conditions, sending signals to a CPU that determines the optimal valve timing and lift. This ensures that the valve operates at the ideal position, improving engine performance and reducing noise.

Another notable patent focuses on the electric valve drive device itself. In this design, a poppet valve is used to control the valve seat in an internal combustion engine. The valve stem features a cylindrical support with a moving coil, while a permanent magnet is housed within an annular cavity of the yoke. The control system applies electric current to the moving coil, optimizing valve timing and lift, which ultimately enhances engine performance.

Career Highlights

Kizuku Ohtsubo is currently employed at Fuji Oozx Inc., where he continues to innovate in the field of engine technology. His work has garnered attention for its practical applications and contributions to automotive engineering. Ohtsubo's expertise in electric valve systems has positioned him as a key figure in the industry.

Collaborations

Ohtsubo has collaborated with notable colleagues, including Noriomi Miyoshi and Takeji Kenmoku. Their combined efforts have led to advancements in electric valve technology, further solidifying their impact on the automotive sector.

Conclusion

Kizuku Ohtsubo's contributions to electric valve drive technology have significantly influenced the performance of internal combustion engines. His innovative patents and ongoing work at Fuji Oozx Inc. highlight his dedication to advancing automotive engineering. Ohtsubo's achievements serve as an inspiration

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