Koichi Toyama

Title: Innovations by Koichi Toyama in Vehicle Anti-Skid Systems

Introduction

Koichi Toyama is a notable inventor based in Kariya, Japan, recognized for his contributions to vehicle safety technology. He holds 3 patents that focus on improving anti-skid systems for vehicles, enhancing both safety and performance.

Latest Patents

One of his significant inventions is an improved anti-skid system for vehicles. This system effectively utilizes an approximated slip ratio between vehicle or body velocity and wheel velocity to generate a brake release signal for a brake release valve, without the need for a vehicle or body velocity detector. The system employs a storage apparatus to store a reference signal representing vehicle velocity, which corresponds to the present or just past maximum value of wheel velocity. A control apparatus is utilized to remove energy from the storage apparatus at a controlled predetermined rate, approximating the expected vehicle deceleration without using an actual vehicle or body deceleration detector. This innovative approach ensures that the reference signal continues to accurately represent approximate vehicle velocities even during deceleration. The system also features various embodiments for the control apparatus, allowing for rapid oscillatory brake releases to provide smoother operation of the anti-skid system.

Another notable patent is an antiskid control device for vehicles. This device includes a timer circuit that produces a timing signal in synchronism with the extinction of a release signal for skid control. It rapidly increases the braking pressure applied to the wheel in response to the timing signal, while also adjusting the braking pressure increasing rate based on the coefficients of friction between the wheel and the road surface. This capability helps to prevent skidding and significantly reduces braking distance, ensuring optimal control under various road conditions.

Career Highlights

Throughout his career, Koichi Toyama has worked with prominent companies such as Nippondenso Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has contributed to his expertise in automotive technology and innovation.

Collaborations

He has collaborated with notable coworkers, including Atutoshi Okamoto and Hiroshi Arai, further enhancing the development of his innovative technologies.

Conclusion

Koichi Toyama's contributions to vehicle anti-skid systems demonstrate his commitment to enhancing automotive safety and performance. His innovative patents reflect a deep understanding of vehicle dynamics and a dedication to improving driving experiences.