CONTROL DEVICE FOR DIESEL ENGINE

• Main Authors: KOGA, NORIYUKI, HATA, MICHIHIRO, KURATA, KAZUO, SHIGAHARA, KEI
• Format: Patent
• Language: English; French; Japanese
• Published: 11.01.2007
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

An exhaust gas purification device (50) for purifying exhaust gas from a diesel engine (1) is provided in an exhaust path (30) of the engine (1). In a fuel cutoff state where main fuel injection by a fuel injection valve (4) is stopped, an intake throttle valve (28) is controlled to reduce the amount of inlet air to the diesel engine (1) and an EGR valve (64) is controlled to increase the amount of exhaust gas recirculation to a combustion chamber (6) of the engine (1). La présente invention concerne un dispositif de purification du gaz d'échappement (50) pour purifier le gaz d'échappement d'un moteur diesel (1) placé dans une voie d'échappement (30) du moteur (1). Dans un état de coupure du carburant dans lequel l'injection de carburant principal par une soupape d'injection de carburant (4) est arrêtée, un papillon d'entrée d'air (28) est contrôlé afin de réduire la quantité d'entrée d'air dans le moteur diesel (1) et une soupape EGR (64) est contrôlée afin d'augmenter la quantité de recirculation du gaz d'échappement vers une chambre de combustion (6) du moteur (1).