Toyota Jidosha Kogyo Kabushiki Kaisha

Tetsuro Nagano

Takehisa Yaegashi

Junichi Saiki

Syouzi Watanabe

This application discloses an exhaust gas recirculation system in an internal combustion engine. The system comprises:

Exhaust gas recirculation system in an internal combustion engine

Disclosed is a catalyzer heating device of an internal combustion engine. The glow plug is disposed in the catalyzer of the catalytic converter. The glow plug is operated when the temperature of the engine and the temperature of the catalyzer are relatively low so as to increase the temperature of the catalyzer for improving the exhaust gas purifying efficiency in the catalyzer.

Catalyzer heating device for an internal combustion engine

A combustion chamber structure for an internal combustion engine, which combustion chamber structure includes a main combustion chamber and a separate auxiliary combustion chamber. The main combustion chamber is supplied solely with air by a conventional intake valve. A passage interconnects the main and auxiliary combustion chambers for permitting air to flow into the auxiliary combustion chamber during the compression stroke of the piston. The auxiliary combustion chamber has a fuel-injection nozzle and a spark ignition plug associated therewith. An obstacle, such as a spherical or cylindrical member, is positioned within but spaced from the sidewall of the auxiliary combustion chamber, whereby a circular flow pattern is created within the auxiliary combustion chamber which improves the fuel atomization and the uniformity of the fuel-air mixture. The spark plug is positioned adjacent the passage which interconnects the chambers so as to result in proper stratified combustion within the main chamber, while also minimizing noise.

Combustion chamber of internal combustion engine

An internal combustion engine utilizing a combustion process of the stratified charge type, and having an auxiliary combustion chamber formed in a cylinder head portion in addition to a main combustion chamber, a passage communicating the auxiliary combustion chamber with the main combustion chamber and being provided with an ignition plug and a fuel injection nozzle for the auxiliary combustion chamber. This passage has a cross-section of a flat envelope, has a predetermined cross-sectional area relative to the transverse cross-sectional area of the piston, is inclined at an acute angle to the upper surface of the piston head, and extends tangentially to the auxiliary combustion chamber. The ignition plug is located upstream of the swirl in the auxiliary combustion chamber in relation to the fuel injection nozzle.

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Susono, Japan

Tetsuro Nagano