A METHOD FOR CONTROLLING REDUCTANT INJECTION FOR AN EMISSION REDUCTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

When an internal combustion engine (1) is driven at low rate below a certain threshold value, the reductant flow to an injector (5) is allowed and restricted in repeating allowing cycles and restricting cycles. During the allowing cycles the controller (12) is set to keep the reductant flow as close...

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Bibliographische Detailangaben
Hauptverfasser:	ALHO TIMO, HOLMQVIST ANDREAS, LOVHOLM MARKUS
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	When an internal combustion engine (1) is driven at low rate below a certain threshold value, the reductant flow to an injector (5) is allowed and restricted in repeating allowing cycles and restricting cycles. During the allowing cycles the controller (12) is set to keep the reductant flow as close as possible a determined low point setpoint value. During the restricted cycles the reductant flowis prevented. 当内燃发动机(1)以低于定阈值的低速率驱动时，在重复的允许循环和限制循环中允许和限制到达喷射器(5)的还原剂流。在所述允许循环过程中，设置控制器(12)以保持还原剂流量尽可能接近预定低点设定点值。在所述限制循环过程中，防止还原剂流。