Masaki Kosuda

Title: Masaki Kosuda: Innovator in Variable Valve Timing Mechanisms

Introduction

Masaki Kosuda is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of automotive engineering, particularly in the development of control devices for variable valve timing mechanisms. His innovative approach aims to enhance the accuracy of cam phase angle interpolation.

Latest Patents

Masaki Kosuda holds a patent for a "Control device and control method for variable valve timing mechanism." This invention provides a solution to improve the accuracy of cam phase angle interpolation without relying on a motor rotation angle sensor. The control device includes a controller that detects the phase angle of a cam based on a cam signal and controls the phase angle using an electric motor. The controller features a motor torque estimation unit that calculates motor torque from motor current, a motor rotation-angle estimation unit that determines the motor rotation angle based on motor torque and engine operating state, and a conversion unit along with a feedback control unit that interpolates the cam phase angle from the motor rotation angle.

Career Highlights

Masaki Kosuda is associated with Hitachi Astemo Ltd., where he has been instrumental in advancing automotive technologies. His work focuses on enhancing engine performance and efficiency through innovative control mechanisms.

Collaborations

He has collaborated with notable colleagues such as Hirokazu Shimizu and Nobuhiko Matsuo, contributing to various projects that aim to push the boundaries of automotive engineering.

Conclusion

Masaki Kosuda's contributions to variable valve timing mechanisms exemplify the spirit of innovation in the automotive industry. His patent reflects a commitment to improving engine performance through advanced control technologies.