Engine cooling system and temperature control method of cooling liquid thereof

A coolant temperature, engine cooling technology, applied in the direction of engine cooling, coolant flow control, engine components, etc., can solve the problem that the engine cannot work under the optimal temperature condition, which affects the fuel consumption of the vehicle, vehicle comfort, cooling fan Frequent opening and other issues to achieve the effect of improving comfort and fuel economy, reducing power consumption and noise, and reducing opening time

Active Publication Date: 2011-09-14
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional engine coolant temperature control system cannot make the engine work under the optimum temperature conditions in all working conditions
At the same time, since there is only one coolant target temperature control, in order to meet the requirements of the entire engine operating condition, the coolant target temperature will be set relatively low (such as 90°C), which will cause the cooling fan to be turned on frequently, increasing power consumption and Noise affects vehicle fuel consumption and vehicle comfort

Method used

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  • Engine cooling system and temperature control method of cooling liquid thereof
  • Engine cooling system and temperature control method of cooling liquid thereof
  • Engine cooling system and temperature control method of cooling liquid thereof

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] refer to figure 1 , The cooling system is composed of circulating water jacket 8, electronic thermostat 7, coolant temperature sensor 6, control unit 5, and water pump 9. Coolant temperature sensor 6 is set on the circulating water jacket 8 of engine outlet, the output end of described coolant temperature sensor is connected the input end of control unit 5, is used for measuring the actual coolant temperature of engine; The input end of control unit 5 is also respectively Collect the signals of engine speed 2, load 3, vehicle speed 1 and intake air temperature 4; the circulating water jacket 8 and the water pump 9 form a small cooling liquid circulation system; when driven by the water pump 9, the cooling liquid flows from the engine outlet through the Coolant small circulation system, and finally back to the engine.

[0027] refer to figure 2 , the cooling ...

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Abstract

The invention discloses an engine cooling system and a temperature control method of cooling liquid thereof. The engine cooling system comprises a heat radiator, a water pump, a circulating water jacket, an electronic thermostat, a cooling fan, a cooling liquid temperature sensor and an engine control unit, wherein the control unit determines the cooling liquid target temperature of an engine under the current operation working condition according to acquired signals, such as engine rotating speed, load, speed, air inlet temperature, and the like and ensures that the engine works under the optimal cooling liquid temperature condition by controlling the heating time of the electronic thermostat and the high and low speed running of the cooling fan.

Description

technical field [0001] The invention belongs to the field of automobile engine cooling systems, and in particular relates to an engine cooling system and a cooling liquid temperature control method. Background technique [0002] The traditional engine cooling system controls the temperature of the engine coolant through the mechanical thermostat. Before the coolant reaches a certain temperature, the mechanical thermostat is closed, cutting off the passage to the radiator (big cycle), and from the engine outlet to the bypass (HVAC) The channels of water pipes, electronic throttle heating water pipes, CNG pressure reducer heating water pipes, etc.) are opened, and the coolant flows directly back to the engine without cooling (small cycle); the mechanical thermostat opens at a certain temperature (such as 88°C), The mixed coolant cooled by the radiator (large circulation) and uncooled (small circulation) enters the engine to control the temperature of the engine coolant. If th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P7/16F01P5/10F01P5/02
Inventor 郑慧冉劼
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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