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Improved thermostatic control method and system for engine test-bed engine oil

A technology of engine oil and test bench, which is applied in the field of vehicle testing, can solve problems such as wear, affecting the pressure of the main oil passage of the engine oil, unreasonable engine oil cooling control, etc., and achieves the effect of low cost and high precision of engine oil temperature control

Active Publication Date: 2010-06-16
BYD CO LTD
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AI Technical Summary

Problems solved by technology

Doing so increases the total flow resistance of the main oil passage of the engine, which affects the pressure of the main oil passage of the engine itself, so that an ideal lubricating oil film cannot be formed between the moving pairs of the engine, resulting in abnormal wear and tear between the moving parts
The control of engine oil temperature is often controlled by adjusting the flow of cooling water flowing through the cooler, so the accuracy of the constant temperature of the engine oil is difficult to guarantee
It is not reasonable to control the cooling of engine oil in this way

Method used

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Embodiment Construction

[0020] Such as figure 1 , an embodiment of the present invention, the engine oil is pumped out from the oil drain blockage of the oil pan 13 of the engine 14 through the high temperature resistant oil pump 5, and after being cooled by the cooler 9, it flows through the heat exchange pipe of the oil cooler 9 , the cooling water 8 flows through the inside of the heat exchange pipe of the oil cooler, and the cooling water 8 can take away the heat of the engine oil, thereby reducing the temperature of the engine oil. The oil pump 5 adopts high temperature resistant, so that the flow rate of the oil pump 5 can meet the maximum circulation flow rate of the engine 14 oil sump 13 machine oil. The oil cooler 9 also adopts high temperature and high pressure resistant to ensure that the oil cooler works for a long time at a pressure of 0.8MPA and a maximum temperature of 120°C. After the cooled machine oil is filtered through the filter 10, the oil is discharged to ensure the quality of...

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Abstract

A modified engine testing bench oil constant temperature control method draws oil from the oil sump of the engine and injects the cooled oil back to the oil sump. It can allow the oil flow meeting themax circulation flow of the required oil of the oil sump, making timely monitoring of the oil temperature, controlling the oil temperature of the oil sump through adjusting the oil flow, filtering the oil at the input and output to ensure the quality of the oil. The modified engine testing bench oil temperature constant control system connects with the engine oil sump through the input and outputcomposed of oil extraction and delivery device, cooling device, oil flow adjusting valve. The advantage is that it will not affect the major oil channel pressure of the engine, with high oil temperature control precision, low cost, better meeting the requirement for engine performance testing and the reliability testing of the engine for engine oil temperature control.

Description

technical field [0001] The invention belongs to the field of vehicle testing, and relates to a method and a device for controlling the constant temperature of engine oil. Background technique [0002] At present, in the field of constant temperature of the engine oil on the engine test bench, the oil in the main oil passage of the engine oil is generally drawn out, and then returned to the main oil passage of the engine after being cooled by the cooler. Doing so increases the total flow resistance of the main oil passage of the engine, which affects the pressure of the main oil passage of the engine itself, so that an ideal lubricating oil film cannot be formed between the moving pairs of the engine, resulting in abnormal wear and tear between the moving parts . The control of engine oil temperature is often controlled by adjusting the flow of cooling water flowing through the cooler, so the accuracy of the constant temperature of the engine oil is difficult to guarantee. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/185G05D23/19G01M15/00
Inventor 刘丰林张明朗叶强张海勃叶俊杰
Owner BYD CO LTD
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