Yasunobu Hirao

Title: **Yasunobu Hirao: Innovator in Automotive Cooling Technologies**

Introduction

Yasunobu Hirao, an esteemed inventor based in Toyokawa, Japan, has made significant contributions to the field of automotive cooling technologies. With a total of seven patents to his name, Hirao's work reflects a commitment to innovation and efficiency within the automotive industry.

Latest Patents

His recent patents demonstrate an acute understanding of electrical and mechanical systems. Among his notable inventions are:

1. **Electric Fan Apparatus**: This apparatus features connectors that utilize male terminals, alongside intermediate terminals designed to connect these male terminals. The fan motor is strategically positioned behind a radiator to facilitate airflow that cools the radiator. Notably, a controller manages the fan motor's operation, ensuring optimal performance. The apparatus incorporates a socket connector on either the fan motor or the controller, which accommodates a male terminal. A plug connector, also equipped with a sink for a male terminal, engages with the socket connector. An intermediate terminal effectively bridges the male terminals when the connectors are engaged, creating a seamless electrical connection.

2. **Motor Vehicle Cooling Apparatus with Electric Motor Surge Current**: This innovative cooling apparatus employs an electric cooling fan whose speed is consistently maintained at a predetermined level. By utilizing a relay switch, voltage from the battery initiates a lag circuit that controls the speed. The output of the lag circuit is directed to a gate of a MOS transistor, which experiences a gradual rise in voltage according to the lag circuit's time constant. This delayed response minimizes surge current to the motor, thereby enhancing the longevity and efficiency of the cooling system.

Career Highlights

Throughout his career, Hirao has been associated with notable companies, including Nippondenso Co., Ltd. His dedication to innovating automotive components has positioned him as a key figure within the industry, where his patents are invaluable resources for enhancing vehicle performance.

Collaborations

Yasunobu Hirao has had the opportunity to collaborate with esteemed colleagues such as Yuji Motoyama and Takashi Nagasaka. These partnerships have allowed for the exchange of ideas and expertise, further enriching his innovative endeavors.

Conclusion

Yasunobu Hirao stands out in the realm of innovation, particularly in automotive cooling solutions. His seven patents showcase a blend of technical prowess and forward-thinking design. As industries continue to evolve, Hirao's contributions will undoubtedly remain influential in shaping the future of automotive technology.