CN111322148A - Cargo vehicle cooling device and control method thereof - Google Patents

Cargo vehicle cooling device and control method thereof Download PDF

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Publication number
CN111322148A
CN111322148A CN202010337714.7A CN202010337714A CN111322148A CN 111322148 A CN111322148 A CN 111322148A CN 202010337714 A CN202010337714 A CN 202010337714A CN 111322148 A CN111322148 A CN 111322148A
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CN
China
Prior art keywords
fan
assembly
cooling device
water temperature
auxiliary fan
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Pending
Application number
CN202010337714.7A
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Chinese (zh)
Inventor
祝龙林
张晓�
张杰峰
刘宝乾
门航
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Dayun Automobile Co Ltd
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Dayun Automobile Co Ltd
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Publication date
Application filed by Dayun Automobile Co Ltd filed Critical Dayun Automobile Co Ltd
Priority to CN202010337714.7A priority Critical patent/CN111322148A/en
Publication of CN111322148A publication Critical patent/CN111322148A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/026—Thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/22—Motor-cars

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention relates to the technical field of cargo vehicle cooling systems, in particular to a cargo vehicle cooling device and a control method thereof. The cooling device sequentially comprises a condenser, an intercooler, a radiator and a main fan system from front to back according to the advancing direction of the vehicle; the auxiliary fan assembly is arranged in front of the condenser; the water inlet of the engine assembly is connected with the radiator through the water pump, and the water outlet of the engine assembly is connected with the radiator through the thermostat to form a heat dissipation circulating pipeline; the device also comprises a controller assembly; the engine assembly is provided with a water temperature sensor for detecting the temperature of coolant in the engine. The invention can solve the heat dissipation problem of the vehicle type matched with the large heat dissipation engine and the small radiator arrangement space, can effectively solve the energy consumption problem through the control method of the invention, avoids overhigh or overlow temperature of the cooling liquid, realizes optimal control, stops working when the fan does not need to work, reduces the power consumption of the fan, increases the power of the whole vehicle, and reduces the oil consumption of the whole vehicle.

Description

Cargo vehicle cooling device and control method thereof
Technical Field
The invention relates to the technical field of cargo vehicle cooling systems, in particular to the technical field of a cargo vehicle cooling system device and a control system thereof, and specifically relates to a cargo vehicle cooling device and a control method thereof.
Background
With the development of automobile technology, the change of global ecological environment and the enhancement of energy crisis consciousness, the requirement of automobile emission level is higher and higher, and near zero emission of the automobile is basically realized at present. At present, the truck basically uses fossil energy as a main power source, the design requirement of the truck has energy-saving consciousness in consideration of the non-renewable property of the energy, the light weight of the whole truck is required, the economical efficiency of the whole truck is good, the dynamic property is good, and the development cost factor is considered. At present, the cargo vehicle gradually develops towards the direction of using an engine with large displacement, high horsepower, high emission and low energy consumption, the power of the engine is enhanced, the emission is tightened, the heat dissipation capacity of the engine which needs to be taken away by cooling liquid is directly increased, and the requirement that the whole vehicle needs to be matched with a larger radiator is met. However, in consideration of development cost, although the engine of some vehicle types is changed greatly, the boundary of the whole vehicle, such as a cab of the whole vehicle, which affects the matching of the cooling system is not changed, which generates a state of the engine, in which the layout space of the cooling system of the small whole vehicle needs to match the requirement of large heat dissipation capacity. Based on the above requirement, the conventional cooling system device cannot meet the requirement, and a new cooling system device is needed to meet the requirement, in which the main cooling element of the cooling system is a fan besides the radiator, and since the radiator cannot be enlarged, i.e. the fan scheme needs to be considered, the addition of the auxiliary cooling fan is a design scheme which has less change and can meet the requirement. However, the fan is a power consumption element, and the increase of the fan can increase the power consumption of the engine and influence the dynamic property of the whole vehicle. After the fan continuously works, when the engine coolant does not need to be cooled, the fan also participates in cooling, so that the water temperature is too low, and the optimal performance of the engine is not facilitated, therefore, the new cooling device needs to realize control so as to realize the related control of the fan and the water temperature. In the control method determination, a power consumption part air conditioning system, a water pump and the like associated with the cooling system can be synchronously considered to realize optimal combined configuration and integration, and if multipurpose integration can be realized, the optimal design is realized. Under the condition that the cooling system device meets the requirement of cooling performance, accurate control is required to be realized so as to realize the optimal dynamic property and economical efficiency of the whole vehicle.
Disclosure of Invention
The invention aims to provide a cooling device for a truck and a control method thereof, which aim to meet the development requirement of the truck under the conditions that the heat dissipation capacity of an engine for the truck is large, the layout space of the whole truck is compact, and the heat dissipation area of a radiator is limited.
The cargo vehicle cooling device is realized by adopting the following technical scheme: a cargo vehicle cooling device is characterized in that a condenser, an intercooler, a radiator and a main fan system are sequentially arranged in the cooling device from front to back according to the advancing direction of a vehicle; the auxiliary fan assembly is arranged in front of the condenser; the auxiliary fan assembly comprises an upper auxiliary fan assembly and a lower auxiliary fan assembly which are arranged up and down; the water inlet of the engine assembly is connected with the radiator through the water pump, and the water outlet of the engine assembly is connected with the radiator through the thermostat to form a heat dissipation circulating pipeline; the device also comprises a controller assembly; a water temperature sensor for detecting the temperature of coolant in the engine is arranged on the engine assembly; the upper auxiliary fan assembly, the lower auxiliary fan assembly, the main fan system, the water pump and the thermostat are connected with the controller assembly and controlled by the controller assembly to act; the signal output end of the water temperature sensor is connected with the controller assembly.
Furthermore, the water pump can be a common mechanical water pump or an electric control water pump, and variable flow control is realized. The thermostat can be a common constant temperature thermostat or an electronic thermostat controlled by variable temperature.
Furthermore, the auxiliary cooling fan assembly mainly refers to an upper auxiliary fan assembly and a lower auxiliary fan assembly, the upper auxiliary fan assembly and the lower auxiliary fan assembly have the same structure, and the upper auxiliary fan assembly and the lower auxiliary fan assembly mainly comprise two fans, a wind collecting cover, a mounting hole and a wiring harness interface. The fan is installed on the wind-collecting cover, and the wind-collecting cover four corners position is provided with the auxiliary cooling fan assembly of mounting hole and passes through the mounting hole and install on intercooler or frame. The control lines of the two fans are integrated into a wiring harness interface, and the wiring harness interface is connected with the controller assembly to achieve control over the working state of the auxiliary cooling fan assembly.
The control method of the cargo vehicle cooling device is realized by adopting the following technical scheme: a control method of a cargo vehicle cooling device comprises the steps that when a vehicle works, a water temperature sensor detects that the water temperature of an engine rises to a certain value, a controller assembly firstly carries out temperature control of full opening of a thermostat, when the thermostat is completely opened, the water temperature rises continuously and reaches a set value, water pump control is carried out, when a water pump reaches the maximum, main fan system control is carried out, when the main fan system reaches the maximum rotating speed, the water temperature rises continuously, upper auxiliary fan assembly control is carried out, a first fan of the upper auxiliary fan assembly is preferentially implemented, the water temperature rises continuously, and the rest fans are sequentially started along with the continuous rising of the water temperature until all fans of the upper auxiliary fan assembly are started; if the water temperature continues to rise, implementing one fan control of the lower auxiliary fan assembly, and if the water temperature continues to rise, sequentially implementing the remaining fan control of the lower auxiliary fan assembly; when the water temperature drops, the control is carried out in reverse according to the control logic.
Furthermore, an air conditioner pressure switch and an air conditioner switch on the automobile are connected with the controller assembly, and when the controller assembly controls the fan to work according to the water temperature signal, the air conditioner pressure signal fed back by the air conditioner pressure switch and the air conditioner opening signal fed back by the air conditioner switch need to be considered simultaneously; when the air conditioner is started or the pressure change of the air conditioner is large to a set value, the main control fan and the auxiliary fan assembly need to be involved; when the pressure change of the air conditioner is smaller than a set value or the air conditioner is closed, the main control fan and the auxiliary fan assembly need to be withdrawn.
The upper auxiliary fan assembly can be shared with an independent air conditioner vehicle type for cooling the condenser. When the independent air conditioner works, the controller assembly controls the working state of the upper auxiliary fan assembly according to the air conditioner pressure switch and a signal fed back by the air conditioner switch.
The truck cooling device and the control method thereof can solve the heat dissipation problem of the vehicle type matched with the large heat dissipation engine and the small radiator arrangement space, effectively solve the energy consumption problem, avoid overhigh or overlow cooling liquid temperature, realize optimal control, stop the work when the fan does not need to work, reduce the power consumption of the fan, increase the power of the whole vehicle and reduce the oil consumption of the whole vehicle. The vehicle satisfies the user demand, promotes whole car quality, increases user's use satisfaction.
Drawings
Fig. 1 is a general block diagram of a cargo vehicle cooling apparatus and a control method thereof according to the present invention.
Fig. 2 is a schematic diagram of the wiring and control of a cargo vehicle cooling device and a control method thereof according to the present invention.
Fig. 3 is an assembly diagram of an auxiliary cooling fan of the cargo vehicle cooling device and the control method thereof.
In fig. 1 and 2: 1-intercooler, 2-condenser, 3-upper auxiliary fan assembly, 4-lower auxiliary fan assembly, 5-air conditioner pressure switch, 6-air conditioner switch, 7-main suspension, 8-auxiliary suspension, 9-radiator, 10-air protection cover, 11-air protection ring, 12-main fan system, 13-water pump, 14-thermostat, 15-water temperature sensor, 16-rotation speed sensor, 17-controller assembly, 18-wiring and 19-engine assembly.
In fig. 3: 31-fan A, 32-fan B, 33-air collecting cover, 34-mounting hole and 35-wiring harness interface.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the cooling device for a cargo vehicle includes an intercooler 1, a condenser 2, an upper auxiliary fan assembly 3, a lower auxiliary fan assembly 4, an air conditioning pressure switch 5, an air conditioning switch 6, a main suspension 7, an auxiliary suspension 8, a radiator 9, a wind shield 10, a wind shield 11, a main fan system 12, a water pump 13, a thermostat 14, a water temperature sensor 15, a rotation speed sensor 16, a controller assembly 17, a connection wire 18, and an engine assembly 19. The upper auxiliary fan assembly 3, the lower auxiliary fan assembly 4, and the main fan system 12 are used to cool the radiator 9, the intercooler 1, and the condenser 2.
The intercooler 1 and the wind shield cover 10 are connected with the radiator 9 through a support, bolts and the like, the condenser 2 is connected with the intercooler 1 through bolts and the like, and the upper auxiliary fan assembly 3 and the lower auxiliary fan assembly 4 are mounted in front of the condenser 2 and the intercooler 1 through supports (the vehicle advancing direction is the front direction) and keep a certain space distance with the intercooler 1 and the condenser 2. The intercooler 1, the condenser 2, the upper auxiliary fan assembly 3, the lower auxiliary fan assembly 4, the radiator 9 and the fan guard 10 form a module, and the module is installed on a whole vehicle frame through the main suspension 7 and the auxiliary suspension 8. The main suspension 7 and the auxiliary suspension 8 may be connected to a radiator 9 or to the intercooler 1. The main suspension 7 and the auxiliary suspension 8 are arranged on both sides of the radiator 9, and are generally symmetrically arranged.
The arrangement relations of the intercooler 1, the condenser 2, the upper auxiliary fan assembly 3, the lower auxiliary fan assembly 4, the radiator 9, the air protecting cover 10, the air protecting ring 11 and the main fan system 12 are as follows from front to back (the advancing direction of the vehicle is front): upper auxiliary fan assembly 3 → lower auxiliary fan assembly 4 (lower auxiliary fan assembly 4 is located below upper auxiliary fan assembly 3) → condenser 2 → intercooler 1 → radiator 9 → main fan system 12.
An air conditioning pressure switch 5 and an air conditioning switch 6 are associated with the condenser 2, the air conditioning pressure switch 5 is installed on an air conditioning pipeline connected with the condenser 2, and the air conditioning switch is installed inside the cab at a position convenient for a driver to operate.
The shroud 11, main fan system 12, water pump 13, thermostat 14, water temperature sensor 15, and speed sensor 16 are typically integrated with an engine assembly 19. The wind-protecting ring 11 is associated with the fan structure of the main fan system 12, and some fans may not have the wind-protecting ring 11, and the fan is directly matched with the wind-protecting cover 10. The water pump 13 of the engine assembly 19 is provided with an engine water inlet, the thermostat 14 is provided with an engine water outlet, a water inlet and a water outlet of the engine assembly 19 are connected with a water outlet of the radiator 9 through a pipeline, the water pump 13 drives cooling liquid to circulate between the engine 19 and the radiator 9, and the water pump 13 can be a common mechanical water pump or an electric control water pump to realize variable flow control. The thermostat 14 controls whether the coolant circulates inside or outside the engine, and the thermostat 14 may be a common constant temperature thermostat or an electronic thermostat controlled by variable temperature. The water temperature sensor 15 feeds back the temperature of the coolant inside the engine to the controller assembly 17, and the controller assembly 17 receives signals and controls the working states of relevant components. The rotation speed sensor 16 feeds back an engine rotation speed signal, and in the present invention, the rotation speed sensor 16 mainly plays a role in feeding back whether the engine is in a starting state or not.
The wiring 18 connects the upper auxiliary fan assembly 3, the lower auxiliary fan assembly 4, the air-conditioning pressure switch 5, the air-conditioning switch 6, the main fan system 12, the water pump 13, the thermostat 14, the water temperature sensor 15 and the rotating speed sensor 16 with the controller assembly 17.
Fig. 2 is a schematic diagram of the wiring and control of a cargo vehicle cooling device and its control method, and the control method will be described with reference to fig. 1. The controller assembly 17 is a core part of the control method of the invention, and the controller assembly 17 receives a water temperature signal fed back by the water temperature sensor 15, an air conditioner pressure signal fed back by the air conditioner pressure switch 5 and an air conditioner on/off signal fed back by the air conditioner switch 6. The controller assembly 17 controls the working states of the upper auxiliary fan assembly 3, the lower auxiliary fan assembly 4, the main fan system 12, the water pump 13 and the thermostat 14 according to the received water temperature signal fed back by the water temperature sensor 15, the air conditioning pressure signal fed back by the air conditioning pressure switch 5 and the air conditioning on/off signal fed back by the air conditioning switch 6.
The specific control method comprises the following steps:
when the vehicle works, the water temperature of the engine rises, the water temperature sensor 15 feeds back a water temperature signal of the engine to the controller assembly 17, the controller assembly 17 controls the working states of the main fan system 12, the water pump 13, the thermostat 14, the upper auxiliary fan assembly 3 and the lower auxiliary fan assembly 4 according to the set control logic according to the water temperature signal, and if the water pump 13 and the thermostat 14 are non-electronic controllable elements, the water pump is not in the control range of the control method. The specific control is as follows: the water temperature is increased, firstly, the thermostat 14 is fully opened for temperature control, when the thermostat 14 is fully opened, the water temperature is continuously increased to reach a set value, the water pump 13 is controlled, when the water pump 13 reaches the maximum, the main fan system 12 is controlled, the fan speed of the main fan system 12 is increased along with the increase of the water temperature, when the water pump 13 reaches the maximum speed, the water temperature is continuously increased, the upper auxiliary fan assembly 3 is controlled, one fan of the upper auxiliary fan assembly 3 is preferentially implemented, the water temperature is continuously increased, the other fan of the upper auxiliary fan assembly 3 is implemented, the water temperature is continuously increased, one fan of the lower auxiliary fan assembly 4 is implemented, the water temperature is continuously increased, when the water temperature is reduced, the control is carried out according to the control logic, namely, as the water temperature is reduced, the control is firstly started from the lower auxiliary fan assembly 4, the operation of the upper fan is stopped one by one, then the upper auxiliary fan assembly 3 is started until the fans of the upper auxiliary fan assembly are all stopped, and then the main fan system, the water pump and the thermostat are controlled in sequence along with the reduction of the water temperature. The rotating speed of the fan can be controlled by stepless speed regulation or stepped speed regulation.
In the above control process, it is necessary to consider both the air conditioner pressure signal fed back by the air conditioner pressure switch 5 and the air conditioner on signal fed back by the air conditioner switch 6. After the air conditioner is started, the controlled element needs to be inserted in advance, when the air pressure regulating force changes greatly, the controlled element needs to be inserted in advance, and when the air pressure regulating force changes little, the controlled element needs to be withdrawn in advance.
The upper auxiliary fan assembly 3 is installed in front of the condenser 2, and the upper auxiliary fan assembly 3 may be shared with an independent air conditioner model for cooling the condenser 2. When the independent air conditioner works, the controller assembly 17 controls the working state of the upper auxiliary fan assembly 3 according to signals fed back by the air conditioner pressure switch 5 and the air conditioner switch 6.
The control method and logic can be adjusted according to specific situations, and the method for controlling the working states of the upper auxiliary fan assembly 3, the lower auxiliary fan assembly 4, the main fan system 12, the water pump 13 and the thermostat 14 by the controller assembly 17 according to the received water temperature signal fed back by the water temperature sensor 15, the air conditioning pressure signal fed back by the air conditioning pressure switch 5 and the air conditioning on/off signal fed back by the air conditioning switch 6 belongs to the protection scope of the present invention.
As shown in fig. 3, an auxiliary cooling fan assembly of a cargo vehicle cooling device and a control method thereof is shown, and with reference to fig. 1, the auxiliary cooling fan assembly mainly refers to an upper auxiliary fan assembly 3 and a lower auxiliary fan assembly 4, and the upper auxiliary fan assembly 3 and the lower auxiliary fan assembly 4 have the same structure, and mainly include a fan a31, a fan B32, a wind-collecting cover 33, a mounting hole 34, and a harness interface 35. The fan A31 and the fan B32 are mounted on the air collecting cover 33, mounting holes 34 are formed in four corners of the air collecting cover 33, and the auxiliary cooling fan assembly is mounted on the intercooler or the frame through the mounting holes 34. The fan A31 and the fan B32 are respectively provided with control wiring, the two control wiring are integrated into a wiring harness interface 35, and the wiring harness interface 35 is connected with the controller assembly 17. And the working state control of the auxiliary cooling fan assembly is realized.

Claims (10)

1. A cargo vehicle cooling device comprises a condenser (2), an intercooler (1), a radiator (9) and a main fan system (12) from front to back in sequence according to the advancing direction of a vehicle, wherein the condenser is arranged at the front of the cooling device; the device is characterized by also comprising an auxiliary fan assembly arranged in front of the condenser (2); the auxiliary fan assembly comprises an upper auxiliary fan assembly (3) and a lower auxiliary fan assembly (4) which are arranged up and down; a water inlet of the engine assembly (19) is connected with the radiator (9) through a water pump (13), and a water outlet of the engine assembly (19) is connected with the radiator (9) through a thermostat (14) to form a heat dissipation circulating pipeline; also includes a controller assembly (17); a water temperature sensor (15) for detecting the temperature of coolant in the engine is arranged on the engine assembly (19); the upper auxiliary fan assembly (3), the lower auxiliary fan assembly (4), the main fan system (12), the water pump (13) and the thermostat (14) are connected with the controller assembly (17) and controlled by the controller assembly (17) to act; the signal output end of the water temperature sensor (15) is connected with a controller assembly (17).
2. A cooler arrangement according to claim 1, characterised in that the upper auxiliary fan unit (3) and the lower auxiliary fan unit (4) are mounted by brackets in front of the condenser (2) and the intercooler (1) at a spatial distance from the intercooler (1) and the condenser (2).
3. The cargo vehicle cooling device of claim 2, wherein two or more fans are provided on the auxiliary fan assembly; the fan is an air suction fan or an air blowing fan, and the form is not limited; the fan rotating speeds of the upper auxiliary fan assembly (3), the lower auxiliary fan assembly (4) and the main fan system (12) are controlled by stepless speed regulation or stepped speed regulation.
4. A cargo vehicle cooling device according to claim 3, wherein: the auxiliary fan assembly comprises a fan A (31), a fan B (32), a wind collecting cover (33), a mounting hole (34) and a wiring harness interface (35); the fan A (31) and the fan B (32) are installed on the air collecting cover (33), the air collecting cover (33) is provided with an installation hole (34), the fan A (31) and the fan B (32) are respectively provided with control wiring, and the two control wiring are integrated into a wiring harness interface (35) or are separately arranged.
5. The cargo vehicle cooling device according to any one of claims 1 to 4, wherein: the water pump (13) is a common mechanical water pump or an electric control water pump, so that variable flow control is realized; the thermostat (14) is a common constant temperature thermostat or a variable temperature controlled electronic thermostat.
6. The cargo vehicle cooling device according to any one of claims 1 to 4, wherein: a wind shield (10) is arranged between the main fan system (12) and the radiator (9).
7. The cargo vehicle cooling device according to claim 6, wherein: an air protection ring (11) is arranged between the main fan system (12) and the air protection cover (10).
8. The cargo vehicle cooling device according to any one of claims 1 to 4, wherein: a rotating speed sensor (16) is also arranged on the engine assembly (19); the signal output end of the rotating speed sensor (16) is connected with a controller assembly (17).
9. A control method for a cargo vehicle cooling device, which is implemented by using the cooling device according to any one of claims 1 to 8, characterized in that: when a vehicle works, the water temperature of an engine is detected to be increased to a certain value through a water temperature sensor (16), a controller assembly (17) firstly carries out full-open temperature control on a thermostat (14), when the thermostat (14) is completely opened and the water temperature is continuously increased to reach a set value, a water pump (13) is controlled, when the water pump (13) is maximized, a main fan system (12) is controlled, after the main fan system (12) reaches the highest rotating speed, the water temperature is continuously increased, an upper auxiliary fan assembly (3) is controlled, a first fan of the upper auxiliary fan assembly (3) is preferentially implemented, the water temperature is continuously increased, and the rest fans are sequentially started along with the continuous increase of the water temperature until all fans of the upper auxiliary fan assembly (3) are started; if the water temperature continues to rise, implementing one fan control of the lower auxiliary fan assembly (4), and if the water temperature continues to rise, sequentially implementing the remaining fan control of the lower auxiliary fan assembly (4); when the water temperature drops, the control is carried out in reverse according to the control logic.
10. The control method of a cargo vehicle cooling device according to claim 9, characterized in that: an air-conditioning pressure switch (5) and an air-conditioning switch (6) on an automobile are both connected with a controller assembly (17), and when the controller assembly (17) controls a fan to work according to a water temperature signal, whether an air-conditioning pressure signal fed back by the air-conditioning pressure switch (5) and an air-conditioning opening signal fed back by the air-conditioning switch (6) are on need to be considered at the same time; when the air conditioner is started or the pressure change of the air conditioner is large to a set value, the main control fan and the auxiliary fan assembly need to be involved; when the pressure change of the air conditioner is smaller than a set value or the air conditioner is closed, the main control fan and the auxiliary fan assembly need to be withdrawn.
CN202010337714.7A 2020-04-26 2020-04-26 Cargo vehicle cooling device and control method thereof Pending CN111322148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010337714.7A CN111322148A (en) 2020-04-26 2020-04-26 Cargo vehicle cooling device and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010337714.7A CN111322148A (en) 2020-04-26 2020-04-26 Cargo vehicle cooling device and control method thereof

Publications (1)

Publication Number Publication Date
CN111322148A true CN111322148A (en) 2020-06-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010337714.7A Pending CN111322148A (en) 2020-04-26 2020-04-26 Cargo vehicle cooling device and control method thereof

Country Status (1)

Country Link
CN (1) CN111322148A (en)

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