Yuuji Nagase

Title: Yuuji Nagase: Innovator in Automatic Transmission Technology

Introduction

Yuuji Nagase is a prominent inventor based in Yokohama, Japan, known for his contributions to automatic transmission technology. With a total of three patents to his name, Nagase has made significant advancements in the field, particularly in the design and control of automatic transmission systems.

Latest Patents

One of Nagase's latest patents is an automatic transmission control device. This device implements a downshift by disengaging a clutch that is engaged in a gear position before the downshift. It determines whether the engine state is in a predetermined region where the change of engine torque per change of accelerator pedal opening is smaller than in another region. The device also assesses whether the engine torque and rotational speed are within predetermined ranges. Additionally, it determines if the accelerator operation is in a predetermined state, inhibiting the downshift if both conditions are met.

Another notable patent is related to continuously-variable transmission and its control method. This invention includes a first determining unit that checks if the indicated pressure of a primary pulley pressure has become a line pressure during an upshift. It features an indicated pressure control unit that adjusts the primary pulley pressure to be higher than the line pressure under specific conditions. Furthermore, an estimated time detecting unit calculates the time required for the primary pulley pressure to equal the line pressure, allowing for precise control of the continuously-variable transmission.

Career Highlights

Yuuji Nagase has worked with notable companies in the automotive industry, including Jatco Corporation and Nissan Motor Company Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in automatic transmission technology.

Collaborations

Nagase has collaborated with esteemed colleagues such as Hideaki Suzuki and Yoshio Yasui. Their combined expertise has contributed to the successful development of advanced transmission systems.

Conclusion

Yuuji Nagase's work in automatic transmission technology showcases his innovative spirit and dedication to improving vehicle performance. His patents reflect a deep understanding of engineering principles and a commitment to advancing automotive technology.