Masaaki Tokuda

Title: Masaaki Tokuda: Innovator in Vehicle Air Conditioning and Waste Heat Utilization

Introduction

Masaaki Tokuda is a notable inventor based in Machida, Japan. He has made significant contributions to the fields of vehicle air conditioning systems and waste heat utilization devices. With a total of 2 patents, his work reflects a commitment to enhancing automotive technology and energy efficiency.

Latest Patents

One of Tokuda's latest patents is a vehicle air conditioning system. This innovative system includes a duct, a refrigerant evaporator, an air conditioning cooling flow passage, a heater core, a heater hot fluid flow passage, a heat exchanger, an electric heater, an electrical component cooling flow passage, a communication flow passage, a fluid temperature sensor, and a flow passage selector valve. The duct is designed to provide air to the vehicle cabin interior, while the cooling flow passage supplies cooled refrigerant to the evaporator. The hot fluid flow passage delivers hot fluid to the heater core, and the heat exchanger facilitates heat exchange between the refrigerant and the hot fluid. The heater warms the hot fluid after heat exchange, and the cooling flow passage also cools an electrical component. The communication flow passage connects the hot fluid and electrical component flow passages in parallel, and the valve allows hot fluid to flow into the cooling flow passage when the hot fluid reaches a high temperature.

Another significant patent by Tokuda is a waste heat utilization device for internal combustion engines. This device employs a Rankine cycle that includes a circulation path for circulating a working fluid. It features an evaporator that transfers heat from cooling water delivered from an internal combustion engine to the working fluid, causing it to evaporate. A superheater then transfers heat from the cooling water delivered from an exhaust gas heat exchanger to the working fluid, superheating it. The expander expands the superheated working fluid to produce driving force, while the condenser condenses the working fluid before it is fed back to the evaporator by a pump.

Career Highlights

Masaaki Tokuda has worked with prominent companies in the automotive industry, including Sanden Corporation and Nissan Motor Company Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in vehicle technology.

Collaborations

Throughout his career, Tokuda has collaborated with talented individuals such as Junichiro Kasuya and Tetsuya Nakano. These partnerships