Denso Corporation

Mamoru Shimoda

Hiroshi Okada

Shuzo Oda

Shinichi Yatsuzuka

Takashi Kaneko

Yasunori Niiyama

Sota Shibasaki

Kazuhiro Ojika

An external combustion engine comprising a pipe-shaped main container in which a working fluid is sealed flowably in a liquid state, a heated part formed at a location of one end of the main container and heating part of the working fluid in the main container in order to make it evaporate, a cooled part formed at a location next to the heated part toward the other end of the main container and cooling the vapor of the working fluid evaporated at the heated part in order to make it condense, an output unit communicated with the other end of the main container and converting the displacement of the liquid phase part of the working fluid to mechanical energy for output, and a controller alternately performing a heat storage mode making displacement of the liquid phase part of the working fluid stop in order to make the heated part store heat and an output mode allowing displacement of the liquid phase part of the working fluid and taking output from the output unit.

External combustion engine

A compressor is composed of a pair of rotors engaging with each other and a driving mechanism having plural gears for driving the pair of rotors. The pair of rotors is disposed in a rotor chamber and the driving mechanism in a gear chamber, both chambers being separated by a separating wall. Fluid such as air is introduced into the rotor chamber from an inlet port and compressed therein, and the compressed air is delivered through an outlet port formed at a position close to the driving mechanism. A cooling water passage is formed at a bottom portion of the gear housing to cool lubricant encapsulated in a gear chamber. Additional cooling water passages may be made to further cool the components of the compressor.

Compressor having cooling passage integrally formed therein

Growing community of inventors

Toyoake, Japan

Mamoru Shimoda