WO2021073057A1

WO2021073057A1 - Vehicle dual-circulating cooling system, and vehicle

Info

Publication number: WO2021073057A1
Application number: PCT/CN2020/084114
Authority: WO
Inventors: 秦四成; 李克锋
Original assignee: 吉林大学; 聊城市德通交通器材制造有限公司
Priority date: 2019-10-15
Filing date: 2020-04-10
Publication date: 2021-04-22
Also published as: CN110725741A

Abstract

A vehicle dual-circulating cooling system, comprising an engine cooling system (10) and a charge air cooling system (20). A cooling circuit of the engine cooling system (10) is provided with an engine (1), an engine water pump (2), and a first heat dissipator (5); the engine water pump (2) is configured to drive a cooling liquid to circulate and flow in the cooling circuit of the engine cooling system, so that the cooling liquid obtaining the heat of the engine (1) achieves heat exchange with cooling air in the first heat dissipator (5); a cooling circuit of the charge air cooling system (20) is provided with a second heat dissipator (7), a circulating pump (9), and an intercooler (8); the circulating pump (9) is configured to drive the cooling liquid to circulate and flow in the cooling circuit of the charge air cooling system, so that the cooling liquid obtaining the heat of charge air in the intercooler (8) achieves heat exchange with cooling air in the second heat dissipator (7); the cooling circuit of the engine cooling system (10) and that of the charge air cooling system (20) are independent of each other, and the first heat dissipator (5) and the second heat dissipator (7) are arranged in parallel in a direction perpendicular to the flow direction of the cooling air. The cooling system simultaneously achieves the heat exchange of the engine cooling system and the charge air cooling system in the flow direction of the cooling air, improves thermal efficiency and the heat dissipation efficiency of the cooling air, and reduces the energy consumption of a vehicle cooling system.

Description

Vehicle dual-cycle cooling system and vehicle

Horizontal citation of related applications

The present disclosure is based on the application with the CN application number 201910975641.1 and the filing date of October 15, 2019, and claims its priority. The disclosure of the CN application is hereby incorporated into the present disclosure as a whole.

Technical field

The present disclosure belongs to the technical field of vehicle cooling and heat dissipation, and relates to a vehicle dual-cycle cooling system, which is suitable for a vehicle multi-heat source system and an efficient heat dissipation method that requires a large heat dissipation capacity.

Background technique

Vehicles, especially engineering vehicles, must meet various functional requirements such as driving and operation. Vehicle systems have many heat sources, such as engine cooling system heat source, engine boost air heat source, vehicle transmission system heat source, vehicle hydraulic system heat source, etc., depending on the host system configuration , The vehicle heat source is different. The vehicle cooling system is an important system that guarantees the temperature requirements of the engine cooling system coolant in the vehicle system, the temperature requirements of the engine charge air cooling, the temperature requirements of the transmission oil of the vehicle transmission system, and the temperature requirements of the hydraulic oil of the vehicle hydraulic system. The vehicle system is highly energy-efficient, clean emission, and reliable. The traditional vehicle cooling system is limited by fan size characteristics, driving characteristics, and noise limitations, limited by the combination of multiple radiators, and limited by the space form of the power cabin, and it is difficult to balance the operating temperature requirements of the various systems of the vehicle. Existing vehicles have problems such as low heat dissipation efficiency of the cooling system, large structural size, and high heat dissipation and energy consumption.

Summary of the invention

The present disclosure is directed to a vehicle dual-cycle cooling system and a vehicle that improve one or more of the above-mentioned defects in the prior art.

The present disclosure provides a dual-cycle cooling system for a vehicle, including:

Engine cooling system. The cooling circuit of the engine cooling system is provided with an engine, an engine water pump and a first radiator, wherein the engine water pump is arranged to drive the coolant to circulate in the cooling circuit of the engine cooling system, so that the cooling system of the engine has been obtained The heat of the cooling liquid is exchanged with the cooling air in the first radiator;

Charge air cooling system, the cooling circuit of the charge air cooling system is provided with a second radiator, a circulation pump and an intercooler, wherein the circulation pump is set to drive the coolant to circulate in the cooling circuit of the charge air cooling system , So that the coolant that has obtained the heat of the charge air in the intercooler exchanges heat with the cooling air in the second radiator; and the cooling circuit of the engine cooling system and the cooling circuit of the charge air cooling system are independent of each other , And the first radiator and the second radiator are arranged side by side in a direction perpendicular to the flow direction of the cooling air.

In some embodiments, the vehicle dual-cycle cooling system includes the radiator of the vehicle hydraulic system, and the vehicle hydraulic system

The radiator is configured to exchange heat between the hydraulic oil of the vehicle hydraulic system and the cooling air. The vehicle hydraulic system

The radiator, the first radiator and the second radiator are arranged side by side in a direction perpendicular to the flow direction of the cooling air.

In some embodiments, a fourth radiator is provided in the cooling circuit of the engine cooling system, and the fourth radiator is configured so that the transmission oil of the vehicle transmission system and the coolant in the cooling circuit of the engine cooling system realize heat therein. exchange.

In some embodiments, the vehicle dual-circulation cooling system is also provided with a fan, and the fan is used to provide cooling air.

The present disclosure also provides a vehicle including the above-mentioned vehicle dual-cycle cooling system.

In some embodiments, the vehicle is a construction vehicle.

Description of the drawings

The present disclosure will be further explained below in conjunction with the accompanying drawings:

Fig. 1 is a diagram of a dual-cycle cooling system for a vehicle according to an embodiment of the present disclosure;

In the picture: 1. Engine; 2. Engine water pump; 3. Engine thermostat; 4. Fourth radiator; 5. First radiator; 6. Hydraulic oil radiator; 7. Second radiator; 8. Middle Cooler; 9. Circulating pump; 10. Engine cooling system; 20. Supercharged air cooling system; 30. Fan; A. Flow direction of vehicle transmission oil; B. Flow direction of supercharged air; C. Flow direction of cooling air before heat exchange; D. The cooling air flow direction after heat exchange;

Detailed ways

The present disclosure will be described in detail below with reference to the accompanying drawings.

1, the present disclosure provides a dual-cycle cooling system for a vehicle, including an engine cooling system 10 and a charge air cooling system 20. The engine cooling system 10 mainly solves the cooling of the engine 1 coolant, and the charge air cooling system 20 mainly solves the engine 1. Cooling of charge air.

The cooling circuit of the engine cooling system 10 is provided with an engine 1, an engine water pump 2 and a first radiator 5. The coolant is driven by the engine water pump 2 to circulate in the cooling circuit, and the coolant flows through the cooling cavity of the engine 1 to obtain the heat of the engine cooling system, so that the engine 1 is cooled. The cooling liquid realizes heat exchange with the cooling air in the first radiator 5.

The cooling circuit of the charge air cooling system 20 is provided with a second radiator 7, a circulation pump 9, and an intercooler 8. The circulation pump 9 is driven by the engine machinery or electric energy, and the coolant is driven by the circulation pump 9 to cool the charge air. The system 20 circulates in the cooling circuit. The coolant flows through the intercooler 8 and exchanges heat with the supercharged air of the engine, obtains heat from the supercharged air, and the coolant exchanges heat with the cooling air in the second radiator 7 While being cooled, the flow direction of the supercharged air is denoted by B. The coolant in the charge air cooling system 20 flows through the intercooler 8 after passing through the second radiator 7 to cool the charge air of the engine 1, reduce the flow space volume of the charge air, reduce the pressure loss of the charge air, and increase The supercharged air pressure ensures that the supercharged air of the engine 1 enters the combustion chamber of the engine. Improve the engine combustion effect, improve vehicle performance, reduce fuel consumption, and reduce emission indicators.

The cooling circuit of the engine cooling system 10 and the cooling circuit of the charge air cooling system 20 are independent of each other, that is, they are independent of each other in fluid flow, and the first radiator 5 of the engine cooling system 10 and the charge air are cooled The second radiators 7 of the system 20 are arranged side by side in a direction perpendicular to the flow direction of the cooling air. Since the first radiator 5 and the second radiator 7 are arranged side by side in a direction perpendicular to the flow direction of the cooling air, the cooling air will enter the first radiator 5 and the second radiator 7 at the same time. At the same time, it realizes the heat exchange between the engine cooling system and the increased air cooling system. In this way, the thermal efficiency is improved, the heat dissipation efficiency of the cooling air is improved, and the energy consumption of the vehicle cooling system is reduced.

In some embodiments, the intercooler 8 is a water-cooled intercooler.

In some embodiments, the vehicle dual-cycle cooling system further includes a fan 30, the cooling air is provided by the fan 30, the flow direction of the cooling air before the heat exchange is represented by C, and the flow direction of the cooling air after the heat exchange is represented by D.

In some embodiments, the engine cooling system 10 can also cool the transmission oil of the vehicle transmission system at the same time. The cooling circuit of the engine cooling system 10 is provided with the fourth radiator 4 of the vehicle transmission system. The coolant in the cooling circuit of the engine cooling system 10 realizes heat exchange in the fourth radiator 4, thereby cooling the vehicle transmission system. The flow direction of the transmission oil of the vehicle transmission system is represented by A.

In some embodiments, the vehicle dual-cycle cooling system includes a third radiator 6 for the vehicle hydraulic system. The third radiator 6 of the vehicle hydraulic system is configured to exchange heat between the hydraulic oil of the vehicle hydraulic system and the cooling air. The third radiator 6, the first radiator 5, and the second radiator 7 used in the vehicle hydraulic system are arranged side by side in a direction perpendicular to the flow direction of the cooling air. Since the first radiator 5, the second radiator 7 and the third radiator 6 of the vehicle hydraulic system are arranged side by side in a direction perpendicular to the flow direction of the cooling air, the cooling air will enter the first radiator 5 and the second radiator at the same time. The second radiator 7 and the third radiator 6 of the vehicle hydraulic system make it possible to simultaneously realize the heat exchange of the engine cooling system, the increased air cooling system and the vehicle hydraulic system.

In this way, the heat exchange between the vehicle engine cooling system, the charge air cooling system, the vehicle transmission system and the vehicle hydraulic system and the cooling air is realized simultaneously, the thermal efficiency is improved, the radiator structure is simplified, and the manufacturing cost of the cooling system is reduced.

In response to the requirements of the vehicle's multi-heat source system on the operating temperature characteristics of their respective systems, in order to avoid the excessive temperature of each system from affecting the high efficiency, energy saving, clean emissions, and working reliability of the vehicle system. By providing a dual-cycle cooling system for a vehicle, the present disclosure realizes efficient cooling and heat dissipation of the heat of each system of the vehicle, and the number of related radiators can be different according to the configuration of the host system.

The above-mentioned embodiments only express multiple embodiments of the present disclosure, but they should not be understood as limiting the scope of the present disclosure. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present disclosure, a number of modifications and improvements can be made, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.

Claims

A dual-cycle cooling system for a vehicle, including:

An engine cooling system (10), the cooling circuit of the engine cooling system (10) is provided with an engine (1), an engine water pump (2) and a first radiator (5), wherein the engine water pump (2) is provided The cooling fluid is driven to circulate in the cooling circuit of the engine cooling system (10), so that the cooling fluid that has obtained the heat of the cooling system of the engine (1) is combined with the first radiator (5) The cooling air realizes heat exchange;

A charge air cooling system (20), the cooling circuit of the charge air cooling system (20) is provided with a second radiator (7), a circulation pump (9) and an intercooler (8), wherein the circulation The pump (9) is configured to drive the cooling liquid to circulate in the cooling circuit of the charge air cooling system (20), so that the heat of the charge air in the intercooler (8) is used in the cooling The liquid and the cooling air are exchanged with the cooling air in the second radiator (7); and

Wherein the cooling circuit of the engine cooling system (10) and the cooling circuit of the charge air cooling system (20) are independent of each other, and the first radiator (5) and the second radiator (7) ) Are arranged side by side in a direction perpendicular to the flow direction of the cooling air.
The vehicle dual-cycle cooling system according to claim 1, comprising a third radiator (6) for the vehicle hydraulic system, and the third radiator (6) is configured to make the hydraulic oil of the vehicle hydraulic system and the cooling air The heat exchange is realized, wherein the third radiator (6), the first radiator (5) and the second radiator (7) are arranged side by side in a direction perpendicular to the flow direction of the cooling air.
The vehicle dual-cycle cooling system according to claim 1 or 2, wherein a fourth radiator (4) of the vehicle transmission system is provided in the cooling circuit of the engine cooling system (10), and the fourth radiator ( 4) It is configured so that the transmission oil of the vehicle transmission system and the cooling liquid in the cooling circuit of the engine cooling system (10) realize heat exchange therein.
The vehicle dual-circulation cooling system according to any one of claims 1 to 3, comprising a fan (30) configured to provide cooling air for the vehicle dual-circulation cooling system.
A vehicle comprising the vehicle dual-cycle cooling system according to any one of claims 1-4.
The vehicle according to claim 5, wherein the vehicle is an engineering vehicle.