Intercooler with heating function

Abstract

The invention discloses an intercooler with a heating function. The intercooler with the heating function is provided with an air outlet chamber with the heating function, and the air outlet chamber with the heating function comprises an intercooler air outlet chamber and a heating body; the heating body is a long-strip-shaped or cylindrical PTC heating body, the heating body is arranged in the air outlet chamber of the intercooler and fixed, then the air outlet chamber with the heating function and the intercooler are welded into an integrated structure, the PTC heating body consumes electric energy to achieve the heating function, and the intercooler with the heating function is formed. The heating body is arranged in the intercooler close to the upstream of the air inlet of the diesel engine and further heats the inlet air of the diesel engine, so that the combustion condition of the diesel engine is improved, and the problem that the low-temperature cold start of the engine is difficult is solved; the heating body is placed in the intercooler, a fuel oil heater does not need to be additionally arranged, and the problem that the fuel oil heater and a pipeline on a vehicle are difficult to arrange is solved.

Description

Technical Field

[0001] The present invention relates to the field of cranes, and in particular to an intercooler with a heating function. Background Art

[0002] Wheeled cranes generally use diesel engines as their power source, driving the crane for travel and lifting operations. Special areas require that cranes be able to operate in ambient temperatures as low as -40°C, which requires that the diesel engine on the crane be able to start and ignite at an ambient temperature of -40°C. Currently, without the use of additional auxiliary devices, the minimum ambient temperature for a diesel engine cold start is generally around -15°C. Most existing diesel engines have their own intake air preheating device, which is connected between the diesel engine air intake and the intake manifold. This device works by using an electric heating grid to heat the diesel engine intake air. The operating status of the preheating device is controlled by the diesel engine controller. When using intake air preheating, the minimum ambient temperature for a diesel engine cold start is generally around -20 to -30°C. This still does not meet the operating requirement at an ambient temperature of -40°C.

[0003] Existing technologies include "Engine Cold Start Preheating Control System and Method", application number 202011061102.6. Electric heaters are used to heat the fuel, liquid heaters are used to heat the engine coolant, and gas heaters are used to heat the battery. However, due to the use of multiple measures to improve the cold start capability of the engine, the system structure and control are relatively complex. The use of multiple heaters requires a large space in the vehicle, and the layout of various heaters and pipelines on the vehicle needs to be considered. Due to the large volume of diesel engine coolant and the large size of the diesel engine cylinder, the temperature of the coolant and the diesel engine rises slowly, and generally a long time of heating is required to successfully cold start the diesel engine.

[0004] Existing technologies include "An integrated control device for cold starting an engine in an extremely cold environment", application number 202323037085.4. An electric heater is used to heat the engine oil in the engine oil pan, and an independent heater (the fuel is low-temperature kerosene) is used to heat the engine coolant. The independent heater solution can heat the diesel engine cylinder through the coolant, but due to the large volume of diesel engine coolant and the large volume of the diesel engine cylinder, the temperature of the coolant and the diesel engine rises slowly, and generally it takes a long time to heat the diesel engine for a successful cold start. In addition, the independent heater needs to be arranged separately, and the layout of the fuel tank and fuel pipe required for the supply of low-temperature kerosene needs to be considered. The direction of the coolant water pipe also needs to be laid, which takes up limited space on the vehicle. In short, the addition of an independent heater makes the heating system more complicated and the preheating time longer.

[0005] Therefore, it is necessary to develop a new type of intercooler with heating function to solve the problem of difficulty in cold starting the engine at low temperature and the problem of difficulty in arranging the fuel heater and pipelines on the vehicle. Summary of the Invention

[0006] Purpose of the invention: In view of the shortcomings and defects of the existing technology, the present invention provides an intercooler with a heating function. A heating body is installed in the intercooler upstream of the diesel engine air intake. The heating body further heats the diesel engine intake air to improve the diesel engine combustion conditions and solve the problem of difficulty in cold starting the engine at low temperatures; by placing the heating body inside the intercooler, there is no need to add a fuel heater separately, which solves the problem of difficult layout of the fuel heater and pipelines on the vehicle.

[0007] Technical solution: The intercooler with heating function of the present invention is characterized in that: it includes an intercooler with heating function, the intercooler with heating function is provided with an air outlet chamber with heating function, the air outlet chamber with heating function includes an intercooler air outlet chamber and a heating body; the heating body is a long strip or cylindrical PTC heating body, the heating body is placed in the intercooler air outlet chamber and fixed, and then the air outlet chamber with heating function and the intercooler are welded into an integrated structure, the PTC heating body consumes electrical energy to realize the heating function, and forms an intercooler with heating function.

[0008] Among them, the intercooler with heating function includes an air outlet chamber with heating function, an intercooler air inlet chamber and an intercooler core; the intercooler air inlet chamber is provided with an intercooler air inlet; the intercooler air outlet chamber of the air outlet chamber with heating function is provided with an intercooler air outlet.

[0009] Among them, the intercooler with heating function is located on the crane and connected to the diesel engine, the intercooler air inlet is connected to the air outlet of the turbocharger on the diesel engine through a pipeline, and the intercooler air outlet is connected to the diesel engine intake pipe on the diesel engine through a pipeline.

[0010] Among them, the air outlet chamber with heating function is connected to one side of the intercooler core, and the intercooler air inlet chamber is connected to the other side of the intercooler core, and the three are welded together; the PTC heating body is located in the intercooler air outlet chamber, and when the PTC heating body is energized, it heats the diesel engine intake air in the intercooler air outlet chamber. The heated intake air enters the diesel engine combustion chamber through the diesel engine intake pipe to improve the diesel engine's cold starting capability.

[0011] Among them, when the diesel engine is running continuously, the cooling capacity of the intercooler is needed to cool the diesel engine intake air. When the intercooler with heating function is working, when the diesel engine is running continuously, the turbocharger compresses the air from the air filter to become high-temperature and high-pressure gas, and then the high-temperature and high-pressure gas enters the intercooler air intake chamber and the intercooler core in sequence from the intercooler air inlet of the intercooler with heating function. The intercooler core reduces the gas temperature through heat exchange with the external cooling medium, and then the cooled gas passes through the intercooler air outlet chamber, the intercooler air outlet, and the diesel engine intake pipe into the diesel engine cylinder for combustion and work.

[0012] Among them, when the diesel engine is cold-started in a low-temperature environment, the heating capacity of the intercooler is needed to heat the diesel engine intake air. When the intercooler with heating function is working, it first controls the heating body in the intercooler to start heating and stores the heat in the intercooler outlet chamber. When the diesel engine is started, the diesel engine intake air from the air filter and the diesel engine turbocharger passes through the intercooler intake chamber to reach the intercooler core. At this time, the diesel engine control reduces the heat exchange effect of the intercooler core; then the air enters the intercooler outlet chamber, and the heating body inside the intercooler outlet chamber heats the diesel engine intake air. Then the diesel engine intake air enters the diesel engine intake pipe, and the diesel engine's own intake preheating device on the diesel engine intake pipe further increases the temperature of the diesel engine intake air. Finally, the gas with higher temperature enters the diesel engine cylinder, improving the combustion conditions in the diesel engine cylinder, so that the diesel engine can start smoothly from cold.

[0013] Among them, the control system of the intercooler with heating function includes a vehicle controller, a diesel engine controller, a battery, and a relay; the vehicle controller serves as the main controller, and is connected and communicates with the diesel engine controller through the CAN bus to obtain the intake preheating working status signal and the diesel engine speed signal sent by the diesel engine controller. After logical judgment, a control signal is sent to the relay, and the relay is used to drive the heating body in the intercooler to work. The battery supplies power to the controller, relay and heating body respectively; the vehicle controller controls the diesel engine intake in the heated intercooler according to the intake preheating signal and diesel engine speed signal status of the diesel engine controller, without the need for additional sensors as the control signal source.

[0014] Among them, the operation of the heating body is controlled by the vehicle controller. The vehicle controller receives the intake preheating working status signal sent by the diesel engine controller, and determines whether the diesel engine is in a shutdown state through the diesel engine speed signal, and drives the heating body in the intercooler to work through the relay; the battery supplies power to the controller, and the relay controls the power supply to the intercooler heating body.

[0015] Among them, when the vehicle controller controls the heating body, during cold start, the crane vehicle is first powered on. At this time, both the vehicle controller and the diesel engine controller are powered on. The diesel engine controller determines whether the intake air heating function needs to be activated based on the detected intake air temperature and sends an intake air heating signal. The signal includes an activation or deactivation state. The intake air heating activation signal indicates that the diesel engine starts to heat the intake air, otherwise it stops heating the intake air; the vehicle controller receives the intake air heating signal sent by the diesel engine controller. When the intake air heating signal is in the deactivation state, the intercooler heating function does not need to be turned on; when the intake air heating signal is in the activation state, the vehicle controller continues to monitor the diesel engine speed signal. When the diesel engine speed is higher than a certain set value, it is determined that the diesel engine has been started and is in the running state, and the intercooler heating function is not required; when the diesel engine speed is lower than a certain set value, it is determined that the diesel engine is in the shutdown state, and the intercooler heating function needs to be turned on to preheat the diesel engine intake air; the above working process of the vehicle controller is repeated.

[0016] Beneficial Effects: Compared to existing technologies, the present invention offers the following significant advantages: The present invention installs an electric heater in the intercooler's air outlet chamber, creating an intercooler with heating functionality, thereby heating the diesel engine's intake air and improving the engine's cold-start capability. The present invention incorporates a heater within the intercooler, upstream of the diesel engine's air intake, to further heat the diesel engine's intake air, improving combustion conditions and resolving the engine's difficulty in cold-starting at low temperatures. Placing the heater within the intercooler eliminates the need for a separate fuel heater, resolving the difficulty of arranging the fuel heater and piping on the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation process structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the connection structure between the intercooler and the diesel engine of the present invention;

[0020] Figure 4 This is a diagram of the heater control structure of the present invention;

[0021] Figure 5 This is a flow chart of heater control according to the present invention;

[0022] In the figure, 1 is the intercooler outlet chamber; 2 is the heater; 3 is the outlet chamber with heating function; 4 is the intercooler with heating function; 5 is the intercooler intake chamber; 6 is the intercooler core; 7 is the intercooler air inlet; 8 is the intercooler air outlet; 9 is the diesel engine; 10 is the turbocharger; 11 is the air filter; and 12 is the diesel engine intake pipe. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The diesel engine cold start of the present invention refers to starting the diesel engine when the internal temperature is roughly the same as the ambient temperature after a period of time since the last shutdown. This state usually occurs when the car has not been used for a long time, such as after parking at night or parking for more than four hours. Diesel engine intake preheating refers to heating the air in the intake duct in a low-temperature environment to improve the starting performance of the diesel engine and optimize the combustion efficiency of the mixture. PTC heating element: also called PTC heating element, it is composed of PTC ceramic heating elements and aluminum tubes. It is an automatic constant temperature, energy-saving electric heating element; its principle is that after the PTC thermistor is powered on, it self-heats and heats up, causing the resistance value to enter the transition zone. Its resistance value increases stepwise with the increase in temperature, while the surface temperature of the PTC thermistor remains constant. Diesel engine controller (English abbreviation ECU): It is an electronic device that controls the operation of various parts of the internal combustion engine. Intercooler: An intake air cooling device that is matched with the diesel engine. It is one of the key components used in supercharged diesel engines to reduce the intake air temperature, increase the intake air density, and thus improve the power and efficiency of the diesel engine.

[0025] The intercooler 4 with heating function of the present invention is composed of the following structures:

[0026] like Figure 1 、 Figure 2 The intercooler 4 with heating function of the present invention is equipped with a heated air outlet chamber 3. The heated air outlet chamber 3 includes an intercooler air outlet chamber 1 and a heater 2. The heater 2 is a long strip or cylindrical PTC heater, which is built into and fixed to the intercooler air outlet chamber 1. The heated air outlet chamber 3 and the intercooler are then welded together to form an integrated structure. The PTC heater consumes electrical energy to achieve the heating function, forming the heated intercooler 4. The heated intercooler 4 includes the heated air outlet chamber 3, an intercooler air inlet chamber 5, and an intercooler core 6. The intercooler air inlet 5 is provided with an intercooler air inlet 7. The intercooler air outlet 1 of the heated air outlet chamber 3 is provided with an intercooler air outlet 8. The introduction of the heater adds an intake air heating function to the existing intake air cooling function of the intercooler. These two functions play different roles in different operating stages of the diesel engine.

[0027] The air outlet chamber 3 with heating function is connected to one side of the intercooler core 6, and the intercooler air inlet chamber 5 is connected to the other side of the intercooler core 6, and the three are welded together; the PTC heating body is located in the intercooler air outlet chamber 1. When the PTC heating body is energized, it heats the diesel engine intake air in the intercooler air outlet chamber 1. The heated intake air enters the diesel engine combustion chamber through the diesel engine intake pipe 12 to improve the diesel engine's cold starting capability.

[0028] Since the intercooler air chamber is larger than the preheating device of the diesel engine, and the interior of the air chamber is a cavity structure, the heater 2 can be made into a larger strip or cylindrical shape, and the heating power can be made greater, which can greatly increase the preheating power during cold start. The heater 2 is placed in the intercooler outlet chamber 1 for the following reasons: (1) The diesel engine intake air flow direction is: intercooler intake chamber 5 → intercooler core 6 → intercooler outlet chamber 1. Since the intercooler core 6 has a heat dissipation function, in order to avoid the heat loss of the diesel engine intake air in the intercooler core 6 after heating, the heater 2 is placed in the intercooler outlet chamber 1; (2) If the heater 2 is installed outside the air chamber, it is necessary to transfer the heat to the diesel engine intake air through heat conduction on the air chamber wall, so the heat loss during the heat transfer process is large. Placing the heater 2 in the air chamber can directly heat the diesel engine intake air in the air chamber, reducing heat loss.

[0029] The working process of the intercooler 4 with heating function of the present invention is as follows:

[0030] An intercooler 4 with a heating function is located on the crane and connected to a diesel engine 9. An air inlet 7 of the intercooler is connected to an air outlet of a turbocharger 10 on the diesel engine (9) via a pipeline. An air outlet 8 of the intercooler is connected to an engine intake pipe 12 on the diesel engine 9 via a pipeline.

[0031] When the diesel engine 9 is running continuously, the intercooler's cooling capacity is needed to cool the intake air of the diesel engine 9 to improve the diesel engine's combustion efficiency and output power. At this time, when the intercooler 4 with heating function is in operation, while the diesel engine 9 is running continuously, the turbocharger 10 compresses the air from the air filter 11, converting it into high-temperature, high-pressure gas. This high-temperature, high-pressure gas then enters the intercooler intake chamber 5 and the intercooler core 6 through the intercooler inlet 7 of the intercooler 4 with heating function. The intercooler core 6 lowers the gas temperature through heat exchange with the external cooling medium. The cooled gas then passes through the intercooler outlet chamber 1, the intercooler outlet 8, and the diesel engine intake pipe 12 and enters the diesel engine cylinder for combustion and power generation.

[0032] When the diesel engine 9 is cold-started in a low-temperature environment, the temperature rise caused by the supercharger compressing the air is limited due to the low starting speed of the diesel engine 9. When the ambient temperature is very low, the intake air temperature loss is greater. At this time, the cooling function of the intercooler is no longer needed. Instead, the intake air needs to be heated to maintain the ignition conditions required for starting the diesel engine 9. At this time, the working process of the intercooler with heating function is as follows: first, the heater 2 in the intercooler is controlled to start heating and store the heat in the intercooler outlet chamber 1. When the diesel engine 9 is started, the diesel engine intake air from the air filter 11 and the diesel engine turbocharger 10 passes through the intercooler intake chamber 5 to reach the intercooler core 6. At this time, the diesel engine 9 controls to reduce the heat exchange effect of the intercooler core 6; then the air enters the intercooler outlet chamber 1, and the heater 2 inside the intercooler outlet chamber 1 heats the diesel engine intake air. Then the diesel engine intake air enters the diesel engine intake pipe 12, and the diesel engine's built-in intake air preheating device on the diesel engine intake pipe 12 further increases the temperature of the diesel engine intake air. Finally, the gas with a higher temperature enters the diesel engine cylinder, improving the combustion conditions in the diesel engine cylinder, so that the diesel engine 12 can start smoothly from cold.

[0033] The control scheme of the present invention:

[0034] The control system of the intercooler 4 with heating function includes a vehicle controller, a diesel engine controller, a battery, and a relay; the vehicle controller serves as the main controller, and is connected and communicates with the diesel engine controller via the CAN bus to obtain the intake preheating working status signal and the diesel engine speed signal sent by the diesel engine controller. After logical judgment, the control signal is sent to the relay, and the relay is used to drive the heating body 2 in the intercooler to work. The battery supplies power to the controller, relay and heating body respectively; the vehicle controller controls the diesel engine intake in the heating intercooler according to the intake preheating signal and diesel engine speed signal status of the diesel engine controller, without the need for additional sensors as control signal sources.

[0035] The operation of the heater 2 is controlled by the vehicle controller. The vehicle controller receives the intake preheating working status signal from the diesel engine controller, determines whether the diesel engine is in the shutdown state through the diesel engine speed signal, and drives the heater in the intercooler to work through the relay; the battery supplies power to the controller, and the relay controls the power supply to the intercooler heater.

[0036] When the vehicle controller controls the heating body 2, during cold start, the crane vehicle is first powered on. At this time, both the vehicle controller and the diesel engine controller are powered on. The diesel engine controller determines whether the intake air heating function needs to be activated based on the detected intake air temperature and sends an intake air heating signal. The signal includes an activation or deactivation state. The intake air heating activation signal indicates that the diesel engine starts to heat the intake air, otherwise it stops heating the intake air; the vehicle controller receives the intake air heating signal sent by the diesel engine controller. When the intake air heating signal is in the deactivation state, the intercooler heating function does not need to be turned on; when the intake air heating signal is in the activation state, the vehicle controller continues to monitor the diesel engine speed signal. When the diesel engine speed is higher than a certain set value, it is determined that the diesel engine has started and is in the running state, and the intercooler heating function is not needed; when the diesel engine speed is lower than a certain set value, it is determined that the diesel engine is in the shutdown state, and the intercooler heating function needs to be turned on to preheat the diesel engine intake air; the above working process of the vehicle controller is repeated.

[0037] In the present invention, the intake air preheating signal issued by the diesel engine controller is used as the main control source. Alternatively, the intake air temperature signal or the ambient temperature signal issued by the diesel engine controller may be used as the main control source.

[0038] This invention places a PTC heater within the intercooler's air outlet chamber. This allows direct heating of the diesel engine's intake air, minimizing heat transfer from the heater to the outside world and reducing heat loss. Furthermore, it takes up virtually no space in the vehicle, avoiding the need for additional heating components. Furthermore, because the intercooler's air chamber is typically larger, the PTC heater's power can be increased compared to that of a diesel engine's intake air preheater, significantly improving cold-start performance.

[0039] Compared with coolant heating, the diesel engine intake air heating of the present invention directly heats the combustion air, with a short heating time and small heat loss. Compared with the fuel liquid heater, the intercooler intake air heating scheme has a greatly reduced system volume and complexity, and there is no space layout problem.

[0040] This invention uses the diesel engine's intake air preheat signal as the control source for the intercooler heating function, eliminating the need for a temperature sensor. The diesel engine controls the intake air preheat signal, and the corresponding intercooler heating time, eliminating the need for the vehicle controller to control the heating time. The PTC heater has a limited maximum heating temperature, eliminating safety concerns associated with overheating. This solution provides a simple and reliable control system.

Claims

1. An intercooler with heating function, characterized by: The invention comprises an intercooler (4) with a heating function, wherein the intercooler (4) with a heating function is provided with an air outlet chamber (3) with a heating function, and the air outlet chamber (3) with a heating function comprises an intercooler air outlet chamber (1) and a heating body (2); the heating body (2) is a long strip or cylindrical PTC heating body, and the heating body (2) is built into the intercooler air outlet chamber (1) and fixed, and then the air outlet chamber (3) with a heating function and the intercooler are welded into an integrated structure, and the PTC heating body consumes electric energy to realize the heating function, thereby forming the intercooler (4) with a heating function.

2. The intercooler with heating function according to claim 1, characterized in that: The intercooler (4) with heating function comprises an air outlet chamber (3) with heating function, an intercooler air inlet chamber (5) and an intercooler core (6); an intercooler air inlet (7) is provided on the intercooler air inlet chamber (5); and an intercooler air outlet (8) is provided on the intercooler air outlet chamber (1) of the air outlet chamber (3) with heating function.

3. The intercooler with heating function according to claim 1, characterized in that: The intercooler (4) with heating function is located on the crane and connected to the diesel engine (9); the intercooler air inlet (7) is connected to the air outlet of the turbocharger (10) on the diesel engine (9) through a pipeline; the intercooler air outlet (8) is connected to the diesel engine air intake pipe (12) on the diesel engine (9) through a pipeline.

4. The intercooler with heating function according to claim 1, characterized in that: The air outlet chamber (3) with heating function is connected to one side of the intercooler core (6), and the intercooler air inlet chamber (5) is connected to the other side of the intercooler core (6), and the three are welded together; the PTC heating body is located in the intercooler air outlet chamber (1), and when the PTC heating body is energized, it heats the diesel engine intake air in the intercooler air outlet chamber (1), and the heated intake air enters the diesel engine combustion chamber through the diesel engine intake pipe (12), so as to improve the diesel engine cold starting capability.

5. The intercooler with heating function according to any one of claims 1 to 4, characterized in that: When the diesel engine (9) is running continuously, the cooling capacity of the intercooler is required to cool the intake air of the diesel engine (9). When the intercooler (4) with heating function is working, the turbocharger (10) compresses the air from the air filter (11) and turns it into high-temperature and high-pressure gas. Then, the high-temperature and high-pressure gas enters the intercooler intake chamber (5) and the intercooler core (6) in sequence from the intercooler intake port (7) of the intercooler (4) with heating function. The intercooler core (6) reduces the gas temperature by heat exchange with the external cooling medium. Then, the cooled gas passes through the intercooler outlet chamber (1), the intercooler outlet port (8), and the diesel engine intake pipe (12) and enters the diesel engine cylinder for combustion and work.

6. The intercooler with heating function according to claim 5, characterized in that: When the diesel engine (9) is cold-started in a low-temperature environment, the heating capacity of the intercooler is required to heat the diesel engine (9) intake air. When the intercooler (4) with heating function is working, the heating body (2) in the intercooler is first controlled to start heating and store the heat in the intercooler outlet chamber (1). When the diesel engine (9) is started, the diesel engine intake air from the air filter (11) and the diesel engine turbocharger (10) passes through the intercooler intake chamber (5) and reaches the intercooler core (6). At this time, the diesel engine (9) controls the heating body (2) in the intercooler to start heating and store the heat in the intercooler outlet chamber (1). The heat exchange function of the intercooler core (6) is reduced; then the air enters the intercooler outlet chamber (1), the heating body (2) inside the intercooler outlet chamber (1) heats the diesel engine intake air, and then the diesel engine intake air enters the diesel engine intake pipe (12), the diesel engine's own intake air preheating device on the diesel engine intake pipe (12) further increases the temperature of the diesel engine intake air, and finally the gas with a higher temperature enters the diesel engine cylinder, improving the combustion conditions in the diesel engine cylinder, so that the diesel engine (12) can be smoothly cold started.

7. The intercooler with heating function according to claim 1, characterized in that: The control system of the intercooler (4) with heating function includes a vehicle controller, a diesel engine controller, a battery, and a relay; the vehicle controller serves as a main controller, is connected and communicates with the diesel engine controller via a CAN bus, so as to obtain an intake air preheating working state signal and a diesel engine speed signal sent by the diesel engine controller, and after logical judgment, sends a control signal to the relay, which is used to drive the heating body (2) in the intercooler to work, and the battery supplies power to the controller, the relay, and the heating body respectively; the vehicle controller controls the diesel engine intake air in the heating intercooler according to the intake air preheating signal and the diesel engine speed signal state of the diesel engine controller, without the need for additional sensors as control signal sources.

8. The intercooler with heating function according to claim 7, characterized in that: Whether the heating body (2) is working or not is controlled by a vehicle controller, which receives an intake air preheating working state signal from a diesel engine controller, determines whether the diesel engine is in a shutdown state through a diesel engine speed signal, and drives the heating body in the intercooler to work through a relay; the battery supplies power to the controller, and the relay controls the supply of power to the intercooler heating body.

9. The intercooler with heating function according to claim 7, characterized in that: When the vehicle controller controls the heating body (2), during cold start, the crane vehicle is first powered on. At this time, the vehicle controller and the diesel engine controller are both powered on. The diesel engine controller determines whether the intake air heating function needs to be activated based on the detected intake air temperature and sends an intake air heating signal. The signal includes an activation or deactivation state. The intake air heating activation signal indicates that the diesel engine starts to heat the intake air, otherwise it stops heating the intake air; the vehicle controller receives the intake air heating signal sent by the diesel engine controller. When the intake air heating signal is in the deactivation state, the intercooler heating function does not need to be activated; when the intake air heating signal is in the activation state, the vehicle controller continues to monitor the diesel engine speed signal. When the diesel engine speed is higher than a certain set value, it is determined that the diesel engine has been started and is in a running state, and the intercooler heating function is not required; when the diesel engine speed is lower than a certain set value, it is determined that the diesel engine is in a shutdown state, and the intercooler heating function needs to be activated to preheat the diesel engine intake air; the above working process of the vehicle controller is repeated.

Images