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Oil thermal management control method and device in engine lubrication system

A technology of lubricating system and control method, which is applied in the direction of engine lubrication, lubricant temperature control, engine components, etc., can solve the problems of increased emissions and increased fuel consumption, and can reduce oil viscosity, increase oil temperature, and reduce fuel consumption. Effect

Active Publication Date: 2019-10-22
ZHEJIANG GEELY HLDG GRP CO LTD +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for oil thermal management control in the engine lubrication system, to solve the technical problems of increased emissions and increased fuel consumption caused by separate control of the variable displacement oil pump and the piston cooling nozzle in the existing lubrication system

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  • Oil thermal management control method and device in engine lubrication system
  • Oil thermal management control method and device in engine lubrication system

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Embodiment 1

[0044] Such as Figure 1-Figure 2 As shown, the present invention discloses a method for controlling engine oil thermal management in an engine lubrication system, comprising:

[0045] S100: Obtain the temperature of the engine oil in the main oil passage of the engine;

[0046] S200: According to the oil temperature, control the variable displacement oil pump to work in high pressure mode or low pressure mode, and at the same time control the opening or closing of the electronically controlled piston cooling nozzle.

[0047] Wherein, after the engine oil temperature T in the main oil passage of the engine is obtained in step S100, the first temperature threshold T is set 1 , the second temperature threshold T 2 , the third temperature threshold T 3 , preferably, T 1 is 15 degrees, T 2 at 60 degrees, T 3 is 125 degrees.

[0048] to combine figure 2 As shown, in step S200, according to the oil temperature, the variable displacement oil pump is controlled to work in the...

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Abstract

The invention discloses an oil thermal management control method in an engine lubrication system. The control method comprises the steps of acquiring the oil temperature in a main oil duct of an engine; judging whether the oil temperature is lower than a first temperature threshold or not; controlling a variable displacement oil pump to work according to the high pressure mode if yes, and closingan electric control piston cooling nozzle; judging whether the oil temperature is lower than a second temperature threshold or not if not; controlling the variable displacement oil pump to work according to the high pressure mode if the oil temperature is no lower than the first temperature threshold and is lower than the second temperature threshold; and opening the electric control piston cooling nozzle. According to the oil thermal management control method, the variable displacement oil pump is combined with the electric control piston cooling nozzle effectively, and segmental control is performed according to the oil temperature; meanwhile, the high and low pressure modes of the variable displacement oil pump and the opening and closing of the electric control piston cooling nozzle are controlled; quick oil temperature rise is achieved, and the oil viscosity is reduced so that the oil consumption is reduced; and meanwhile, the situation that the piston temperature is too low and consequently the displacement is increased is avoided. The invention further discloses a device.

Description

technical field [0001] The invention relates to the technical field of engine lubricating systems, in particular to a method and device for heat management and control of engine oil in the engine lubricating system. Background technique [0002] With the widespread popularization of automobiles, people pay more and more attention to the performance of automobiles, and as an important part of automobiles, the performance of engines is also constantly improving. In the general engine lubrication system, the oil is sucked out from the oil pan by the oil pump, and distributed to various parts such as bearings, pistons, piston cooling nozzles, etc. through the main oil passage. [0003] With the increasingly stringent emission and fuel consumption regulations, technologies such as variable displacement oil pumps and electronically controlled piston cooling nozzles are more and more widely used. The variable displacement oil pump and the electronically controlled piston cooling n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M5/00F01M1/16F01M1/02F01P3/08F01P7/14
CPCF01M1/02F01M1/16F01M5/005F01P3/08F01P7/14
Inventor 王齐夏朝辉
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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