Kunihiko Hayakawa

Title: Kunihiko Hayakawa: Innovator in Fuel Injection Technology

Introduction

Kunihiko Hayakawa is a notable inventor based in Odawara, Japan. He has made significant contributions to the field of fuel injection technology, holding 2 patents that enhance the efficiency and reliability of fuel injection systems.

Latest Patents

Hayakawa's latest patents include a fuel injection control method and a fuel-injection control device. The fuel injection control method aims to perform accurate fuel injection control in response to requests from the engine side. This method is designed to be unaffected by variations in power supply voltage, coil temperature of a fuel injection solenoid, and other external factors. The driving of the fuel injection solenoid is controlled based on the actual current integral of the coil current flowing through the solenoid after it has started. The process involves detecting the actual current integral, comparing it with a reference current integral, and correcting the driving pulse width for the solenoid accordingly.

The solenoid drive apparatus patent focuses on a device where energy stored in a capacitor is used for re-driving the solenoid. This invention suppresses heat generation in a current back-flow preventing circuit and a rectifying element. The electric power accumulated in the solenoid when its driving is stopped is temporarily stored in the capacitor. A high voltage generated by charging the capacitor is utilized as the power supply for a discharge control circuit.

Career Highlights

Kunihiko Hayakawa is associated with Mikuni Corporation, where he applies his expertise in fuel injection technology. His work has contributed to advancements in automotive engineering and fuel efficiency.

Collaborations

Hayakawa has collaborated with notable coworkers, including Osamu Miura and Shigeru Yamazaki, who have also contributed to innovations in the field.

Conclusion

Kunihiko Hayakawa's contributions to fuel injection technology through his patents demonstrate his commitment to innovation and engineering excellence. His work continues to influence the automotive industry positively.