Method and device for controlling piston cooling system

Abstract

The invention provides a method and a device for controlling a piston cooling system. The method comprises the following steps: an acquiring step, namely acquiring parameters of an engine connected with the piston cooling system; and a judging step, namely if judging that the parameters meet preset conditions, controlling a piston cooling device control valve in the piston cooling system to be electrified, wherein if the piston cooling device control valve is closed, the piston cooling system does not inject oil. The method and the device can solve the problems in the prior art that aiming at a working condition of no need of oil injection, unreasonable injection is caused by adoption of a mechanical piston nozzle for injecting; control on the piston cooling system is more accurate, thus saving emission and oil consumption; and the engine warming-up speed is promoted, the frictional loss of the engine in a working condition with high speed and low load can be reduced, and piston knocking noise in idling of the engine is reduced.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a method and device for controlling a piston cooling system. Background technique [0002] In the prior art, in order to achieve the purpose of reducing emissions and fuel consumption, it is necessary to make more precise control on the various systems in the engine. Obviously, the traditional mechanical structure can no longer meet this requirement. [0003] The traditional mechanical piston nozzle is controlled by the oil pressure of the engine. When the oil pressure of the engine reaches the opening pressure, the mechanical piston nozzle opens, and when the oil pressure of the engine is lower than the closing oil pressure, the mechanical piston nozzle closes. However, when the engine is in cold start and high speed and low load, due to the high oil pressure, the mechanical piston nozzle will open, but in this case, it is not necessary to open the mechanical piston nozzle, and the mecha...

AI Technical Summary

Problems solved by technology

[0005] Based on the above problems, the present invention proposes a method and device for controlling the piston cooling system. By obtaining the parameters of the engine connected to the control piston cooling system, if the judgment parameters meet the preset conditions, the piston cooling device in the piston cooling system is controlled. The valve is energized, the control valve of the piston cooling device is closed, and the piston cooling system does not inject oil, which solves the problem of unreasonable injection caused by mechanical piston nozzles in the prior art when oil injection is not required; Make the control of the piston cooling system more precise, thereby saving emissions and fuel consumption; increase the engine warm-up speed, reduce the friction loss of the engine under high-speed and low-load conditions, and reduce the engine idling piston knocking noise

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