Eiji Tsuruta

Title: Eiji Tsuruta: Innovator in Overcurrent Detection and Fuel Feed Control Systems

Introduction

Eiji Tsuruta is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of electrical engineering and control systems. With a total of 3 patents to his name, Tsuruta has developed innovative solutions that enhance the functionality and safety of various systems.

Latest Patents

One of Tsuruta's latest patents is an overcurrent detection method and detection circuit. This invention is designed for a load-driving apparatus that utilizes a Field Effect Transistor (FET) between a battery and a load. The overcurrent detection circuit features a function generation circuit that includes a voltage divider circuit and a comparator. The voltage divider circuit consists of a pair of resistors connected to the drain of the FET, along with a Zener diode connected in parallel to the second resistor. The comparator's role is to compare a reference voltage at the connection point with a variable voltage of the FET, outputting an overcurrent detection signal when the variable voltage falls below the reference voltage. This design ensures that the system does not erroneously signal an overcurrent even in the presence of noise.

Another significant patent by Tsuruta is a system for detecting abnormalities in the fuel feed control system of a gas turbine engine. This system includes an engine speed sensor that provides a fuel feed rate control signal based on the deviation of the sensed engine speed from the intended speed. Tsuruta's invention introduces a timer circuit that generates a signal after a preset period from the engine's start. It also features a comparison circuit that produces a signal if the actual engine speed signal amplitude is below a normal level after the preset time. A logical operation circuit then provides a warning signal only when both the timer and comparison circuits output '1' signals, thereby enhancing the safety of the engine operation.

Career Highlights

Eiji Tsuruta is currently employed at Nissan Motor Company Limited, where he continues to innovate and contribute to advancements in automotive technology. His work focuses on improving the reliability and efficiency of vehicle systems.

Collaborations

Throughout his career, Tsuruta has collaborated with esteemed colleagues such as Akio Hosaka and Kazushige Yokota. These collaborations have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion