DIESEL ENGINE AND DIESEL ENGINE CONTROL METHOD Russian patent published in 2015 - IPC F02D41/02 F02D41/22 F01N9/00 F01N11/00 

FIELD: engines and pumps.

SUBSTANCE: invention can be used in diesel engines. The diesel engine contains a particulate filter (13) installed in a discharge line (9) of the engine and an electronic control unit (3) for control of fuel nozzles (2) associated with engine cylinders. The electronic control unit (3) is configured for triggering, when the quantity of the particles accumulated in the filter (13), exceeding the threshold value is detected or assessed, of the method of control of nozzles (2) which identifies automatic recovery of the filter (13) by means of increase of temperature of exhaust gases sent to the filter (13), sufficient for burning out of particles in the filter. The electronic control unit (3) is configured for actuating of alarm condition, prohibiting the mode of automatic recovery and at the same time permitting the recovery mode by request which can be actuated manually by a driver when the electronic control unit (3) reveals a value lower, than a pre-set threshold value of the parameter identifying the quality of lubricant oil of the engine. The engine is fitted with manual controls for actuating of the mode of recovery by request. The electronic control unit (3) is configured for actuating of alarm condition also when the electronic control unit (3) detects the excess of the pre-set threshold value of amount of adverse events in which the stage of automatic recovery is interrupted before its end. The electronic control unit (3) is configured so that in case of detection of amount of adverse events with higher value, than threshold one, the condition alarm with prohibition of the automatic recovery mode and permission of the mode of recovery by request was actuated only in case when the electronic control unit also detects resistance to a flow of exhaust gases through the particulate filter, higher, than the threshold value. The quality of lubricant oil the engine is estimated by means of pre-set algorithm on the basis of value of the parameter defining the oil quality. The diesel engine control method is described.

EFFECT: decrease of impact of injected fuel on lubricant oil.

11 cl, 4 dwg