Hitoshi Andoh

Title: Hitoshi Andoh: Innovator in Throttle Valve Technology

Introduction

Hitoshi Andoh is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of throttle valve mechanisms. With a total of seven patents to his name, Andoh's work has focused on improving the efficiency and functionality of air intake systems in internal combustion engines.

Latest Patents

One of Andoh's latest inventions is a throttle valve opening and closing device. This invention aims to simplify the default mechanism of a throttle valve, enhancing its mountability to vehicles. When a motor generates no driving forces, the throttle valve is held in a specific position by a return spring. In this position, gaps are formed between the throttle valve and the wall surface of the intake passage. Spherical recesses are strategically formed in parts of the wall surface of the intake passage. When the throttle valve is aligned with these spherical recesses, the gaps are minimized, optimizing the operating range of the throttle valve.

Another significant patent is the air intake control device for internal combustion engines. This device features an air passage equipped with a groove that supplies the required volume of air downstream from the fully closed position of a valve body. A taper is designed to ensure that a predetermined volume of air can be supplied, even if positional variations occur with the valve body. This innovation allows for a stable air flow supply at the idle position of the valve body without increasing the number of parts, even if the valve body has become stuck downstream from the controlled area.

Career Highlights

Hitoshi Andoh has worked with prominent companies, including Hitachi, Ltd. His experience in these organizations has contributed to his expertise in automotive technologies and patent development.

Collaborations

Andoh has collaborated with notable coworkers such as Masahiko Soshino and Kenji Ono. Their combined efforts have likely advanced the innovations in throttle valve technology and air intake systems.

Conclusion

Hitoshi Andoh's contributions to automotive technology through his patents demonstrate his commitment to innovation and efficiency. His work continues to influence the design and functionality of throttle valve mechanisms in vehicles.