Company Filing History:
Years Active: 2001-2007
Title: Kenji Hagiwara: Innovator in Automatic Vehicle Transmission Technology
Introduction
Kenji Hagiwara is a prominent inventor based in Wako, Japan. He has made significant contributions to the field of automatic vehicle transmission technology. With a total of 6 patents to his name, Hagiwara's work focuses on improving the efficiency and effectiveness of transmission systems in vehicles.
Latest Patents
Hagiwara's latest patents include a simulator for automatic vehicle transmission controllers. This innovative simulator utilizes computer-aided design programs to simulate a shift control algorithm stored in an electronic control unit (ECU) of an automatic transmission featuring hydraulic clutches. The simulator employs a simplified hydraulic model to describe the entire system, allowing for the design of a third model based on which simulations are conducted. This approach reduces simulation time to just 4 seconds, closely approximating the actual shift time of about 1.5 seconds. Additionally, the durability of the transmission can be tested by repeating the simulation. If undesirable shift phenomena are predicted during the simulation, the shift control algorithm can be adjusted until the issue is resolved in subsequent simulations. This advancement eliminates the need for manufacturing a test transmission and conducting preliminary tests, thereby enhancing the efficiency and cost-effectiveness of transmission development.
Another notable patent is a simulator designed for verifying algorithms of a shift controller in automatic transmissions. This simulator includes a main unit that stores the necessary programs and inputs the algorithm, along with a pseudo-signal generator that produces operation signals for hydraulic actuators. The programs consist of calculating means that assess the outputs of various models describing the behavior of the engine, transmission, and vehicle body. This allows for real-time simulation of the automatic vehicle transmission's behaviors, including the non-linear behavior of hydraulic actuators, facilitating the verification and evaluation of control algorithms in real-world scenarios.
Career Highlights
Kenji Hagiwara is currently employed at Honda Giken Kogyo Kabushiki Kaisha, a leading company in the automotive industry. His work at Honda has been instrumental in advancing the technology behind automatic transmissions, making significant strides in both efficiency and performance.
Collaborations
Hagiwara has collaborated with notable colleagues such as Yukio Morita and Takamichi Shimada. Their combined expertise has contributed to the innovative developments in automatic vehicle transmission technology.
Conclusion
Kenji Hagiwara's contributions to
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