Patent Number: 6,293,095

Title: In-cylinder injection type internal combustion engine

Abstract: An in-cylinder injection type internal combustion engine, which includes a main fuel injection control unit that drives a fuel injector to inject fuel directly into a combustion chamber, is provided so that premixed combustion or stratified charge combustion takes place depending upon operating conditions of the engine. The engine further includes an additional fuel injection control unit that drives the fuel injector to inject additional fuel during an expansion stroke after the fuel injector is driven by the main fuel injection control unit, when it is necessary to increase the temperature of a catalyst provided in an exhaust passage for purifying exhaust gas. An exhaust manifold includes an exhaust chamber, in which the exhaust gas remains, and the additional fuel that is left unburned is re-burned in the exhaust chamber.

Inventors: Yamamoto; Shigeo (Obu, JP), Nakane; Kazuyoshi (Okazaki, JP), Sato; Hironobu (Okazaki, JP), Takemura; Jun (Toyota, JP), Ando; Hiromitsu (Okazaki, JP), Dogahara; Takashi (Okazaki, JP), Iwachido; Kinichi (Aichi-gun, JP)

Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha

International Classification: F01N 3/08 (20060101); F01N 3/20 (20060101); F01N 7/10 (20060101); F02D 41/02 (20060101); F02D 41/40 (20060101); F01N 7/00 (20060101); F01N 7/02 (20060101); F02D 41/30 (20060101); F02B 75/12 (20060101); F02B 75/00 (20060101); F02B 1/00 (20060101); F02B 1/04 (20060101); F01N 003/00 ()

Expiration Date: 09/25/2018