Toyota Jidosha Kabushiki Kaisha

Teru Ogawa

Toshiaki Tanaka

Tetsushi Suzuki

Takashi Shimura

Naoto Koyamaishi

Shujiro Kuribayashi

A bypass passage connecting an upstream portion and a downstream portion of a compressor of a turbocharger is provided in an air intake passage of an internal combustion engine. An ejector, which utilizes the intake air flowing in the bypass passage as a drive gas and thereby venting the blow-by gas generated by the internal combustion engine, is installed in the bypass passage. When the internal combustion engine is at a low temperature at which the oil is easily degraded by the blow-by gas, the flow rate of the intake air flowing in the bypass passage, that is, the flow rate of the drive gas of the ejector, is increased.

Blow-by gas ventilation device

A sludge adhesion inhibiting structure for an internal combustion engine according to the present invention is characterized in that a sludge inhibiting layer inhibiting generation or adhesion of sludge is formed on a surface of an area inside the internal combustion engine into which oil as a liquid does not always spread and which is contacted by oil mist as a gas. Preferably, the sludge inhibiting layer is made up of a solid alkali substance. Furthermore, the sludge inhibiting layer is provided in a head cover and formed on an inner surface of an oil separator chamber separating the oil from a blow-by gas.

Growing community of inventors

Mishima, Japan

Teru Ogawa