Mazda Motor Corporation

Toyo Kogyo Co., Ltd.

Toshio Miyatani

Hiroshi Kodama

Yukio Yamamoto

Yukihiro Sugimoto

Ryoji Abe

Tooru Maeda

Nobuyuki Oda

Kazuyuki Yoshimoto

Yukiyoshi Fukuda

Akihiro Nakano

Fuminori Ishimura

The film boiling state of a refrigerant is maintained for a time longer than in the prior art by t to lower the nuclear boiling start temperature to a temperature at which the material proof strength of a work exceeds thermal stress, thereby lowering the cooling rate of the work. In addition, by controlling the cooling rate in hardening, the film boiling state of the refrigerant is maintained to a temperature at which the material proof strength exceeds thermal stress, thereby cooling the work at a temperature equal to or higher than the critical cooling rate of the work.

Light-alloy casting heat treatment method

A rotary piston engine having a supercharging blower located in the intake passage upstream of the throttle valve. A lubricating oil supply system includes oil passages opening through oil discharge nozzles to the intake passage downstream of the throttle valve and to the rotor housing. Air passages are provided and communicating at one ends with the oil passages and opening at the other end to the intake passage between the supercharging blower and the throttle valve.

Lubricating oil supply system for a supercharged rotary piston engine

Growing community of inventors

Hiroshima-ken, Japan

Toshio Miyatani