Company Filing History:
3 out of 19,733 
1 out of 36,653 
Years Active: 2006-2018
Title: Wataru Nagashima: Innovator in Hybrid Vehicle Technology
Introduction
Wataru Nagashima is a prominent inventor based in Kariya, Japan. He has made significant contributions to the field of hybrid vehicle technology, holding a total of 3 patents. His innovative work focuses on improving vehicle performance and efficiency through advanced control methods.
Latest Patents
One of Nagashima's latest patents is for a hybrid vehicle and method for controlling the same. This invention introduces inverterless running control, where an inverter is set to a gate cut-off state. The engine drives a motor-generator to generate counter-electromotive torque, allowing the vehicle to run with drive torque applied to the output shaft. An ECU manages the drive torque to produce the desired driving force based on accelerator position by adjusting the system voltage during inverterless running control.
Another notable patent is for a controller for a vane-type variable valve timing adjusting mechanism. In this invention, an OCV target current is set to the holding current to maintain the actual advance amount close to the target during holding control. When the deviation between the actual and target advance amounts exceeds a certain threshold, micro displacement control is initiated. This control applies pulse current to the hydraulic control valve, enabling precise adjustments to the VCT, thereby enhancing engine performance.
Career Highlights
Wataru Nagashima has worked with leading companies in the automotive industry, including Denso Corporation and Toyota Motor Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in hybrid vehicle technology.
Collaborations
Throughout his career, Nagashima has collaborated with notable colleagues such as Yukihiro Yamashita and Naoki Yoshiume. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the automotive sector.
Conclusion
Wataru Nagashima's contributions to hybrid vehicle technology through his patents and collaborations highlight his role as an influential inventor in the automotive industry. His innovative approaches continue to shape the future of vehicle performance and efficiency.