METHOD OF OPERATING DIRECT INJECTION DIESEL ENGINE AND DIESEL ENGINE FOR PERFORMING THE SAME

• Main Authors: CHMELA FRANZ, FIGER GUENTER, FUCHS CHRISTIAN, PIRKER GERHARD, GLENSVIG MICHAEL, SAMS THEODOR DR, WIMMER ANDREAS, CSATO JANOS, EICHLSEDER HELMUT
• Format: Patent
• Language: English
• Published: 20.05.2004
• Edition: 7
• 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

PROBLEM TO BE SOLVED: To provide technology for operating an internal combustion engine, minimizing the exhaustion of nitrogen oxide and particulates from a low partial load region to a full load region while achieving high efficiency. SOLUTION: The combustion of fuel is performed in a first operation region A corresponding to low-to-medium partial load at a local temperature TLbelow a NOx forming temperature TNOXand at a local air ratio λLover a particulate forming limit λLS. Fuel injection is started in a crank angle range of 50° to 5° before a top dead center of a compression stroke, and exhaust gas is recirculated at an exhaust gas recirculation percentage of about 50% to 70%. The fuel injection in a second operation region B corresponding to medium partial load is started in a crank angle range of about 2° before the top dead center to about 20° after the top dead center. COPYRIGHT: (C)2004,JPO