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engine cooling equipment

A technology for cooling equipment and engines, applied in the direction of engine cooling, mechanical equipment, engine components, etc., can solve problems such as vibration and uneven cooling water temperature, and achieve the effect of suppressing vibration

Active Publication Date: 2021-05-04
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the cooling water with such a temperature difference is not sufficiently mixed in the above thermostat, the temperature of the cooling water in the thermostat will become uneven
As a result, the thermostat may open and close repeatedly for short periods of time, i.e., so-called oscillations may occur

Method used

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  • engine cooling equipment
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Examples

Experimental program
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Embodiment Construction

[0018] Figure 1A and Figure 1B is a schematic diagram of a cooling device 1 (hereinafter referred to as a cooling device) of an engine 10 according to the present embodiment. In the present embodiment, the cooling device 1 and the engine 10 are mounted to the vehicle, but not limited thereto. The cooling device 1 includes an electronic control unit (ECU) 3 , a radiator 20 , a thermostat 30 , a water pump 40 , an injection part 50 and a heater 70 . The cooling device 1 is provided with flow paths R1 and R2 through which cooling water circulates, and the cooling device 1 is provided with a flow path R3 communicating with the flow path 1 . The driving of the water pump 40 circulates the cooling water at least through the flow path R2 , and the flow of the cooling water in the flow paths R1 and R3 is changed in response to the open or closed state of the thermostat 30 . Figure 1A Broken arrows indicating the flow of cooling water in the closed state of the thermostat 30 are sh...

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Abstract

A cooling device for an engine includes: a radiator that promotes heat dissipation of cooling water of the engine; a first flow path that circulates cooling water discharged from the engine to the engine through the radiator; a second flow path that The second flow path circulates the cooling water discharged from the engine to the engine without passing through the radiator; a thermostat, which is attached to the junction of the first flow path and the second flow path, when the cooling water in the second flow path closing the first flow path when the temperature of the water is lower than the threshold value, and opening the first flow path when the temperature of the cooling water in the second flow path is equal to or higher than the threshold value; and a third flow path that makes the first flow path A portion of the first flow path between the engine and the radiator communicates with a portion of the first flow path between the radiator and the thermostat.

Description

technical field [0001] The invention relates to a cooling device for an engine. Background technique [0002] Conventionally, a cooling device of an engine is known. The cooling device is provided with: a radiator that promotes heat dissipation of cooling water discharged from the engine; a first flow path that circulates the cooling water to the engine through the radiator; a second flow path that circulating cooling water to the engine without passing through the radiator; and a thermostat provided in a junction of the first flow path and the second flow path. [0003] When the temperature of the cooling water in the second flow path is lower than a threshold value, the thermostat closes the first flow path. Therefore, when cooling water at a low temperature is discharged from the engine, circulation of the cooling water to the engine through the radiator is restricted, which promotes warm-up of the engine. In addition, the thermostat closes the first flow path when the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P3/18F01P7/16F01P11/04
CPCF01P3/18F01P7/16F01P11/04F01P7/165B60K11/04F01P3/20F01P5/12F01P2050/22
Inventor 远藤庆
Owner TOYOTA JIDOSHA KK
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