Method and device for controlling engine oil pressure of diesel engine and generator set

Abstract

The invention relates to a method and device for controlling the engine oil pressure of a diesel engine and a generator set. The corresponding relation of the overflow pressure threshold, changing along with the temperature of engine oil, of an engine oil system is set, wherein when t is smaller than TO, p is equal to PO, when t is larger than or equal to TO but smaller than TC, p is equal to PO+kdeltat, and when t is larger than or equal to TC, p is equal to PO+kTC; after the diesel engine is started, the diesel engine can be loaded to reach the working condition with the rated rotating speed or the rotating speed smaller than the rated rotating speed, meanwhile, the real-time overflow pressure threshold is obtained according to the corresponding relation, and the engine oil pressure of the engine oil system is regulated. According to the control device for achieving the method, a temperature control valve can be connected with an overflow pressure reducing valve in parallel, and the temperature control valve is initially in a starting state and is gradually closed along with the gradual rising of the engine oil temperature. The structure is simple and compact, and cost is low. The initial pressure of the engine oil system after engine starting is regulated continuously along with the change of the engine oil temperature, parts such as a supercharger and an oil injection pump cannot be damaged, meanwhile, the lubricating and cooling effects are reliably ensured, the time for warming-up is saved, and the light oil saving effect of a heavy oil unit is especially obvious.

Description

technical field [0001] The invention relates to a diesel engine oil pressure control method, device and generator set, belonging to the technical field of diesel engines. Background technique [0002] The oil system of a diesel engine is mainly composed of main engine oil pump, starter oil pump, oil filter, overflow valve, oil heater, pipeline and other components. When the engine is started, the engine oil is pumped out from the oil pan by the starter oil pump, flows into the fuel injector, the main bearing bush, the supercharger and other parts that need to be lubricated and cooled, and then returns to the oil pan. After the start-up is completed, the main engine oil pump drives the engine oil to lubricate and cool all parts. Since the oil temperature is low and the viscosity is high when the engine is started, it will rise directly from idle speed to rated speed after starting, and high pressure will be generated in the oil pipeline, which will easily damage the turbocha...

AI Technical Summary

Problems solved by technology

However, the conventional "heating" method takes too long, and often cannot meet the requirements of these power generation markets in terms of time and light oil consumption indicators

Images