FUEL INJECTION SYSTEM FOR DIESEL ENGINE

PROBLEM TO BE SOLVED: To adjust catalyst temperature conditions without causing degradation of fuel consumption and a sudden increase of smoke in diesel engines which are provided with a catalyst in their exhaust passage and with a direct fuel injection into the combustion chambers of their cylinder...

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Bibliographische Detailangaben
Hauptverfasser:	SAITO TOMOAKI, HOSOYA HIDEO
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To adjust catalyst temperature conditions without causing degradation of fuel consumption and a sudden increase of smoke in diesel engines which are provided with a catalyst in their exhaust passage and with a direct fuel injection into the combustion chambers of their cylinders. SOLUTION: A catalyst absorbs NOx under a high oxygen concentration and releases NOx under a low oxygen concentration for NOx reduction purification, whose conversion efficiency is low in a non-warmup state. A turbosupercharger supercharges intake air by means of an exhaust gas. In an accelerating engine operation or for promotion of a catalyst temperature elevation, a basic injection quantity Qbase of fuel corresponding to engine-required torque is injected from each injector in three parts near the compression top dead center of each cylinder, and concurrently fuel injection quantity may be increased.