WO2024001186A1

WO2024001186A1 - Quick startup system for engine, operation machine, and control method

Info

Publication number: WO2024001186A1
Application number: PCT/CN2023/073953
Authority: WO
Inventors: 沈阳; 李源; 王凡; 杨宜林
Original assignee: 三一重机有限公司
Priority date: 2022-06-30
Filing date: 2023-01-31
Publication date: 2024-01-04
Also published as: CN115163374A

Abstract

A quick startup system for an engine comprises a fuel tank, an engine (1), a first temperature measurement element (24), a cooling liquid circulating system, a first heating device (5) and a control device, wherein a fuel inlet of the engine is connected to a fuel outlet of the fuel tank, and a fuel outlet of the engine is connected to a fuel return port of the fuel tank; the first temperature measurement element is configured to measure the temperature of the engine; the cooling liquid circulating system is connected to a cylinder water jacket of the engine and a water jacket of the fuel tank; the first heating device is configured to heat cooling liquid in the cooling liquid circulating system; and the control device is in communication connection with the first heating device and the first temperature measurement element, and the control device controls the turning on/off of the first heating device according to a measurement signal of the first temperature measurement element. The system can effectively solve the problem of it being difficult for the engine to start up due to the poor fluidity of fuel and the high damping of the engine in a low-temperature environment. Further provided are an operation machine and a control method for a quick startup system for an engine.

Description

Quick start system for engine, working machine, and control method

Technical field

The present application relates to the technical field of working machinery, and in particular to a quick start system for an engine, working machinery, and a control method.

Background of the invention

At present, when diesel vehicles or machinery using diesel engines are in a low-temperature environment, as the ambient temperature decreases, the viscosity of the diesel increases and the fluidity becomes worse. It is prone to wax formation, clogging of oil pipes, etc., thus affecting the starting and normal operation of the diesel engine. Work.

Contents of the invention

This application provides a quick-start system, working machinery, and control method for an engine to solve the problem of high viscosity and poor fluidity of diesel fuel in low-temperature environments, which is prone to wax formation, clogging of oil pipes, etc., thus affecting the starting and operation of the diesel engine. Defects in normal operation.

This application provides a quick start system for an engine, including:

Fuel tank;

Engine, the oil inlet of the engine is connected to the oil outlet of the fuel tank, and the oil outlet of the engine is connected to the oil return port of the fuel tank;

A first temperature detection element used to detect the temperature of the engine;

A coolant circulation system connected to the cylinder water jacket of the engine and the water jacket of the fuel tank;

a first heating device for heating the coolant in the coolant circulation system;

A control device is communicatively connected with the first heating device and the first temperature detection element. The control device controls the opening and closing of the first heating device according to the detection signal of the first temperature detection element.

A quick start system for an engine provided according to this application also includes:

Hydraulic tank;

A heater is used to heat the hydraulic oil tank, and the heater is connected to the coolant circulation system through a connecting pipeline.

a second temperature detection element used to detect the temperature of the hydraulic oil tank;

The third valve controls the opening and closing of the connecting pipeline;

Wherein, the second temperature detection element and the third valve are communicatively connected with the control device, and the control device controls the opening and closing of the third valve according to the detection signal of the second temperature detection element.

According to a quick starting system for an engine provided by this application, the first heating device includes:

A heat exchanger, the heat exchanger is connected to the coolant circulation system;

A combustion system is used to heat the heat exchanger. The oil inlet of the combustion system is connected to the oil outlet of the fuel tank. The oil outlet of the combustion system is connected to the oil return port of the fuel tank. ;

Wherein, the control device controls the opening and closing of the combustion system according to the detection signal of the first temperature detection element.

According to a quick starting system for an engine provided by this application, the fuel tank includes:

The main fuel tank is used to store the first grade of fuel;

Auxiliary fuel tank, used to store second grade fuel;

Moreover, the quick start system for the engine also includes:

a first switching valve, used to control the switching conduction between the oil inlet of the engine and the oil outlet of the main oil tank or the oil outlet of the auxiliary oil tank;

The second switching valve is used to control the oil outlet of the engine to switch to the oil return port of the main oil tank or the oil return port of the auxiliary oil tank.

According to a quick start system for an engine provided by this application, the quick start system for an engine further includes:

a third switching valve, used to control the switching conduction between the oil inlet of the combustion system and the oil outlet of the main oil tank or the oil outlet of the auxiliary oil tank;

The fourth switching valve is used to control the switching and conduction between the oil outlet of the combustion system and the oil return port of the main oil tank or the oil return port of the auxiliary oil tank.

According to a quick start system for an engine provided by this application, the fuel tank includes a main fuel tank, the oil inlet of the combustion system is connected to the oil outlet of the main fuel tank, and the oil outlet of the combustion system It is connected with the oil return port of the main oil tank; the oil inlet of the engine is connected with the oil outlet of the main oil tank, and the oil outlet of the engine is connected with the oil return port of the fuel tank.

According to the quick starting system for an engine provided by this application, it also includes a second heating device, and the second heating device is disposed in the main oil tank.

According to a quick starting system for an engine provided by this application, the third heating device includes:

A first heating element is provided on the first fuel pipeline between the fuel inlet of the combustion system and the fuel outlet of the fuel tank;

The second heating element is arranged on the fuel filter of the first heating device.

A fuel circulation loop, the inlet of the fuel circulation loop is connected to the oil outlet of the fuel tank, and the outlet of the fuel circulation loop is connected to the oil return port of the fuel tank;

The first filter is arranged on the fuel circulation oil path;

A circulation pump is provided on the fuel circulation oil path, and is used to drive fuel to flow along the fuel circulation circuit.

An oil-water separator, the oil inlet of the oil-water separator is connected to the oil outlet of the fuel tank;

A coarse filter, the inlet of the coarse filter is connected to the oil outlet of the oil-water separator;

A fine filter, the inlet of the fine filter is connected to the outlet of the rough filter, and the outlet of the fine filter is connected to the oil inlet of the engine.

According to a quick starting system for an engine provided by this application, it also includes a fourth heating device, and the fourth heating device includes:

A third heating element is provided in the oil-water separator;

A fourth heating element is provided on the coarse filter;

The fifth heating element is arranged on the fine filter.

According to a quick starting system for an engine provided by this application, the coolant circulation system includes:

A water collecting distributor includes a cold water area and a hot water area, the outlet of the cold water area is connected to the inlet of the heat exchanger, and the inlet of the hot water area is connected to the outlet of the heat exchanger;

A first pipeline for connecting the inlet of the cold water area and the water outlet of the engine, and a first valve for controlling the opening and closing of the first pipeline is provided on the first pipeline;

a second pipeline for connecting the outlet of the hot water zone and the water inlet of the engine;

A third pipeline used to connect the inlet of the cold water area and the water outlet of the fuel tank;

The fourth pipeline is used to connect the outlet of the hot water zone and the water inlet of the fuel tank. The fourth pipeline is provided with A second valve used to control the opening and closing of the fourth pipeline.

The present application also provides a working machine, including a quick start system for an engine as described in any one of the above.

A working machine provided according to this application also includes:

Hydraulic tank;

A heater, used to heat the hydraulic oil tank, the heater is connected to the coolant circulation system of the quick-start system for the engine;

A third valve used to control the on/off connection between the heater and the coolant circulation system;

Wherein, the second temperature detection element and the third valve are communicatively connected with the control device of the quick start system for the engine, and the control device can control the control device according to the detection signal of the second temperature detection element. Opening and closing of the third valve.

This application also provides a control method including:

Get the actual temperature of the engine;

Compare the actual temperature of the engine with the first preset temperature;

When the actual temperature of the engine is less than the first preset temperature, control the first heating device to start heating the coolant in the coolant circulation system;

When the actual temperature of the engine is greater than or equal to the first preset temperature, the first heating device is controlled to turn off.

According to a control method provided by this application, it also includes:

Get the actual temperature of the hydraulic tank;

Compare the actual temperature of the hydraulic oil tank with the second preset temperature;

When the actual temperature of the hydraulic oil tank is less than or equal to the second preset temperature, control the third valve to open;

When the actual temperature of the hydraulic oil tank is greater than the second preset temperature, the third valve is controlled to close.

According to a control method provided by this application, it also includes:

When the actual temperature of the engine is lower than the first preset temperature, the second heating device is controlled to start and heat the fuel in the main fuel tank.

According to a control method provided by this application, it also includes:

Obtain the change value of the fuel level in the main fuel tank after the fuel filling is completed;

Compare the change value of the fuel level with a preset ratio;

When the change value of the fuel level is greater than or equal to the preset ratio, the circulation pump is controlled to start and continue to operate for a preset filtering time, so that the first filter circulates and filters the fuel.

According to a control method provided by this application, it also includes:

Obtain the working hours of the first heating device and the third heating device;

When the working duration of the first heating device and the third heating device reaches the first preset duration, control the fourth heating device to start;

When the working time of the first heating device and the third heating device reaches the second preset time length, the first heating device, the third heating device and the fourth heating device are controlled to be turned off.

The quick start system, work machine and control method for the engine provided by this application can detect the temperature of the engine through the first temperature detection element, and the control device controls the first heating device to coolant in the coolant circulation system according to the temperature of the engine. Heating is carried out so that the heated coolant can enter the engine and fuel tank to heat the fuel tank and engine, which can reduce the viscosity of the fuel and thus reduce the starting resistance. By heating the engine, the engine can be preheated, so that the engine can It can start smoothly in low temperature environment, which can effectively solve the problems of poor fuel fluidity, large engine damping and difficulty in starting in low temperature environment.

Brief description of the drawings

In order to more clearly illustrate the technical solutions in this application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are the drawings used in the present application. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a quick start system for an engine provided by this application;

Figure 2 is a connection diagram between the second heating device and the bottom cover of the fuel tank provided by this application;

Figure 3 is a schematic flow chart of the control method provided by this application;

Figure 4 is a working flow chart of the circulation pump provided by this application;

Figure 5 is a schematic diagram of the control flow of the heating system provided by this application (when using the main oil tank and the auxiliary oil tank);

Figure 6 is a schematic diagram of the control flow of the heating system provided by this application (when only the main oil tank is used).

Reference signs:

1. Engine; 2. Main fuel tank; 3. Auxiliary fuel tank;

4. Hydraulic oil tank; 5. First heating device; 6. Electromagnetic pump;

7. Water collecting distributor; 8. First valve; 9. Second valve;

10. The third valve; 11. The first switching valve; 12. The third switching valve;

13. The fourth switching valve; 14. Circulation pump; 15. The first filter;

16. Oil-water separator; 17. Coarse filter; 18. Fine filter;

19. Fuel injection pump; 20. Fuel tank bottom cover; 21. First heating rod;

22. Second heating rod; 23. Heater; 24. First temperature detection element;

25. Second temperature detection element; 26. Liquid level detection element.

Ways to practice the invention

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application. , not all examples. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The quick start system for the engine, the working machine, and the control method of the present application will be described below with reference to FIGS. 1 to 6 .

As shown in Figure 1, this application provides a quick start system for an engine, including a fuel tank, an engine 1, a first temperature detection element 24, a coolant circulation system, a first heating device 5 and a control device.

Among them, the oil inlet of the engine 1 is connected to the oil outlet of the fuel tank, and the oil outlet of the engine 1 is connected to the oil return port of the fuel tank; and the first temperature detection element 24 is used to detect the temperature of the engine 1 .

The coolant circulation system is connected to the water tanks of the engine 1 and the fuel tank to enable coolant to pass through the engine 1 and the fuel tank. Furthermore, the first heating device 5 is used to heat the coolant in the coolant circulation system, so that the coolant can heat the engine 1 and the fuel tank.

In addition, the control device is communicatively connected with the first heating device 5 and the first temperature detection element 24 , and the control device can control the opening and closing of the first heating device 5 according to the detection signal of the first temperature detection element 24 .

Here, the first temperature detection element 24 may be a temperature sensor, and the first temperature detection element 24 may be provided on the cylinder head of the engine 1 . The control device can be the engine electronic control module (Engine Control Module, ECM) of the engine.

Specifically, the control device stores a first preset temperature. When the first temperature detection element 24 detects that the temperature of the engine 1 is less than the first preset temperature, the control device controls the first heating device 5 to start, and the cooling liquid circulation system is cooled. The coolant is heated, and the heated coolant is distributed to the engine 1 and the fuel tank, and the coolant is continuously circulated. The engine 1 and the fuel tank are heated until the first temperature detection element 24 detects that the temperature of the engine 1 reaches the first preset temperature.

In this way, by heating the fuel tank, the fuel viscosity can be reduced and the starting resistance can be reduced. By heating the engine 1, the engine 1 can be preheated, so that the engine 1 can start smoothly in a low temperature environment.

With this arrangement, the coolant in the coolant circulation system is heated by the first heating device 5 and the heated coolant is used to heat the engine 1 and the fuel tank, which can effectively solve the problem of poor fuel fluidity and damping of the engine 1 in low temperature environments. Big and difficult to start problem.

In an optional embodiment of the present application, the quick start system for the engine may also include a hydraulic oil tank 4 and a heater 23. The heater 23 is used to heat the hydraulic oil tank 4. The heater 23 may be connected to the coolant circulation system. The pipeline is connected so that the coolant can enter the heater 23 . In this way, the heated coolant can enter the heater 23, thereby heating the hydraulic oil tank 4 through the heater 23 to heat the hydraulic oil and facilitate the starting of the main pump, thus helping to reduce the resistance torque and resistance of the engine itself. The resistance torque of the hydraulic system is conducive to quick starting of the engine in low temperature environments.

In an optional embodiment, the quick start system for the engine may also include a second temperature detection element 25 and a third valve 10. The second temperature detection element 25 is used to detect the temperature of the hydraulic oil tank 4, and the third valve 10 is used to detect the temperature of the hydraulic oil tank 4. To control the opening and closing of connecting pipelines.

Wherein, the second temperature detection element 25 and the third valve 10 are both communicatively connected with the control device, and the control device can control the opening and closing of the third valve according to the detection signal of the second temperature detection element 25 . In this way, the control device controls the opening and closing of the third valve 10 through the temperature detected by the second temperature detection element 25 to control the opening and closing of the connecting pipeline.

Specifically, when the second temperature detection element 25 detects that the temperature of the hydraulic oil tank 4 is less than the second preset temperature, the control device controls the third valve 10 to open so that the coolant circulation circuit and the heater 23 can be connected to enable heating. The resulting coolant can flow through the heater 23 , so that the heater 23 can heat the hydraulic oil tank 4 .

Here, the second temperature detection element 25 may be a temperature sensor.

In this embodiment, the second temperature detection element 25 is provided on the hydraulic oil tank 4 .

In an optional embodiment of the present application, the first heating device 5 may include a heat exchanger and a combustion system. The heat exchanger is connected to the coolant circulation system so that the coolant can enter the heat exchanger; the combustion system is used to The heat exchanger is heated to heat the coolant passing through the heat exchanger, thereby heating the engine 1 and the fuel tank.

In this embodiment, the oil inlet of the combustion system can be connected to the oil outlet of the fuel tank, and the oil outlet of the combustion system can be connected to the oil return port of the fuel tank. In this way, the coolant can be heated by burning fuel without the need for additional fuel, which is beneficial to reducing costs.

In this embodiment, the first heating device 5 may be an external coolant combustion heating system. Specifically, the first heating device 5 may be an injection fuel heater.

Specifically, the injection fuel heater includes a combustion system, a heat exchanger, a pipeline circulation system and a control system. The combustion system includes a burner, combustion chamber, ignition electrode, etc. The burner is composed of a DC motor, a combustion-supporting wind wheel, a fuel injector, and an oil pump. The oil pump is driven by the DC motor, and the inhaled fuel is sent to the fuel injector through the fuel pipe. , it is sprayed from the fuel injector by pressure. The sprayed high-pressure oil mist is mixed with the air sucked by the combustion fan in the combustion chamber of the combustion system, and is ignited by the ignition electrode. After full combustion in the combustion chamber, the gas flows through the heat exchanger The heat conduction sheet transfers most of the heat to the water (i.e., coolant) in the interlayer of the heat exchanger. The coolant is forcibly discharged in the pipeline by the pipeline pump, and enters the cylinder water jacket and fuel tank of the engine 1 through the pipeline. water jacket. In this way, the first heating device 5 can both heat the coolant and pump the coolant to circulate the coolant throughout the system, thereby heating the engine 1 and the fuel tank.

Here, the oil outlet of the fuel tank and the oil pump are connected through a fuel delivery pipe.

Moreover, in this embodiment, the control device can control the opening and closing of the combustion system according to the detection signal of the first temperature detection element 24. Specifically, the control device can control the injection fuel heater according to the detection signal of the first temperature detection element 24. The opening and closing of the ignition electrode or the opening and closing of the oil pump.

In the first optional embodiment of the present application, the fuel tank may include a main fuel tank 2 and an auxiliary fuel tank 3. In extremely cold temperatures, the main fuel tank 2 may store the first brand of fuel, and the auxiliary fuel tank 3 may store the second brand of fuel.

Here, the auxiliary fuel tank 3 can be located in the main fuel tank 2, so that when the main fuel tank 2 is heated, the auxiliary fuel tank 3 can be heated at the same time.

Moreover, the quick start system for the engine may also include a first switching valve 11 and a second switching valve. The first switching valve 11 is used to control the oil inlet of the engine 1 and the oil outlet of the main oil tank 2 or the outlet of the auxiliary oil tank 3. The oil port switches and conducts; the second switching valve is used to control the oil outlet of the engine 1 and the oil return port of the main oil tank 2 or the oil return port of the auxiliary oil tank 3 to switch and conduct. In this way, the first switching valve 11 and the second switching valve can control the engine 1 to switch communication with the main fuel tank 2 and the auxiliary fuel tank 3, so that the engine 1 can use different fuels.

In an optional embodiment, the quick start system for the engine may also include a third switching valve 12 and a fourth switching valve 13 . The third switching valve 12 is used to control the oil inlet of the combustion system and the outlet of the main fuel tank 2 . The oil port or the oil outlet of the auxiliary oil tank 3 is switched to conduction. The fourth switching valve 13 is used to control the oil outlet of the combustion system to be switched to conduction with the oil return port of the main oil tank 2 or the oil outlet of the auxiliary oil tank 3 .

The second grade of fuel can be low-grade fuel, and the first grade of fuel can be high-grade fuel, that is, the second grade of fuel is more suitable for low-temperature environments.

Specifically, when the first temperature detection element 24 detects that the temperature of the engine 1 reaches the first preset temperature, the first switching valve 11 controls the oil inlet of the engine 1 to communicate with the oil outlet of the auxiliary oil tank 3, and the second switching valve The oil outlet of the engine 1 is controlled to be connected to the oil return port of the auxiliary tank 3. The third switching valve 12 controls the oil inlet of the combustion system to be connected to the oil outlet of the auxiliary tank 3. The fourth switching valve 13 controls the oil outlet of the combustion system. The port is connected to the oil return port of the auxiliary fuel tank 3, so that the first heating device 5 can work with the second brand of fuel and the engine 1 can be started with the second brand of fuel. When the engine 1 is started, the first switching valve 11 controls the oil inlet of the engine 1 to be connected to the oil outlet of the main oil tank 2, and the second switching valve controls the oil outlet of the engine 1 to be connected to the oil return port of the main oil tank 2. , the third switching valve 12 and the fourth switching valve 13 are closed. In this way, the engine 1 can operate using the first brand of fuel after starting.

In this way, before starting the engine 1, the low-grade fuel is used to heat the coolant and supply the engine 1 to prepare for the ignition of the engine 1. Since the fluidity of the low-grade fuel at low temperature is better than that of the high-grade fuel, it is easy to reduce the The time when the first heating device 5 and the engine 1 are started; after the engine 1 is started, the first switching valve 11 and the second switching valve are used to control the connection between the engine 1 and the main fuel tank 2, so that the engine 1 can work with high-grade fuel, thereby effectively save costs.

In the second optional embodiment of the present application, in non-extremely cold temperatures, the main tank 2 of the fuel tank can be filled with a brand of fuel adapted to the ambient temperature. In this way, it is beneficial to reduce costs, and there is no need to use low-grade fuel to prepare the engine 1 for heating and ignition.

In one way, the fuel tank may only include the main fuel tank 2, the fuel inlet of the combustion system is connected to the fuel outlet of the main fuel tank 2, the fuel outlet of the combustion system is connected to the oil return port of the main fuel tank 2, and the fuel inlet of the engine 1 is connected. The oil port is connected to the oil outlet of the main fuel tank 2, and the oil outlet of the engine 1 is connected to the oil return port of the fuel tank. The first heating device 5 and the engine 1 are supplied with oil through the main oil tank 2, and the first heating device 5 and the engine 1 only use one type of fuel to operate.

In an optional embodiment, in order to improve the fluidity of the fuel and ensure that the fuel can smoothly enter the combustion system and the engine 1, the quick start system for the engine may also include a second heating device, and the second heating device may be provided in the main fuel tank. 2 to heat the fuel.

In another method, the fuel tank includes a main fuel tank 2 and an auxiliary fuel tank 3. The auxiliary fuel tank 3 is not filled with fuel, and the main fuel tank 2 is filled with a brand of fuel adapted to the ambient temperature.

When the temperature of the engine 1 detected by the first temperature detection element 24 reaches the first preset temperature, the first switching valve 11 controls the oil inlet of the engine 1 to communicate with the oil outlet of the main oil tank 2, and the second switching valve controls The oil outlet of the engine 1 is connected to the oil return port of the main oil tank 2. The third switching valve 12 controls the oil inlet of the combustion system to be connected to the oil outlet of the main oil tank 2. The fourth switching valve 13 controls the outlet of the combustion system. The oil port is connected to the oil return port of the main fuel tank 2, so that the first heating device 5 and the engine 1 can only use the fuel in the main fuel tank 2. At the same time, the control device controls the start of the second heating device to heat the fuel in the main fuel tank 2 to improve the fluidity of the fuel and make it easier for the fuel to enter the first heating device 5 and the engine 1 Inside. In this way, the time required to heat the engine 1 can be effectively reduced, the heating efficiency can be improved, and the engine 1 can be quickly started.

In an optional embodiment, as shown in FIG. 2 , the second heating device may include a first heating rod 21 and a second heating rod 22 , and both the first heating rod 21 and the second heating rod 22 may be disposed in the main oil tank 2 on the bottom cover plate 20 of the fuel tank, and the first heating rod 21 and the second heating rod 22 can be arranged close to the oil outlet of the main fuel tank 2. In this way, the fluidity of the fuel can be improved and the fuel can flow out of the main fuel tank 2 conveniently.

Specifically, the fuel tank bottom cover 20 and the main fuel tank 2 are sealed by an O-ring. The oil outlet of the main fuel tank 2 can be provided on the fuel tank bottom cover 20 , and the oil outlet of the main fuel tank 2 can include a first oil outlet. The first oil outlet is used to connect with the oil inlet of the first heating device 5 , and the second oil outlet is used to connect with the oil inlet of the engine 1 . In order to facilitate the flow of fuel in the main fuel tank 2 into the first heating device 5 and the engine 1 , the first heating rod 21 may be disposed at the first oil outlet, and the second heating rod 22 may be disposed at the second oil outlet.

In an optional embodiment of the present application, the coolant circulation system includes a water collecting distributor 7, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline.

Among them, the water collection distributor 7 may include a cold water area and a hot water area. The outlet of the cold water area is connected to the inlet of the heat exchanger, and the outlet of the hot water area is connected to the outlet of the heat exchanger. In this way, it is convenient for the coolant in the cold water zone to enter the heat exchanger and be heated before flowing back to the hot water zone.

The first pipeline is used to connect the inlet of the cold water area and the water outlet of the engine 1 so that the coolant of the engine 1 can flow into the cold water area of the water collecting distributor 7; the second pipeline is used to connect the outlet of the hot water area and the engine 1 The water inlet allows the heated coolant to flow back to the engine 1 to heat the engine 1.

Moreover, a first valve 8 may be provided on the first pipeline to control the opening and closing of the first pipeline. When the temperature of the engine 1 reaches the first preset temperature, the first valve 8 can be controlled to close and the first pipeline is cut off so that the coolant of the engine 1 no longer enters the cold water area.

The third pipeline is used to connect the inlet of the cold water area and the outlet of the fuel tank, so that the coolant in the fuel tank can flow into the cold water area of the water collecting distributor 7; the fourth pipeline is used to connect the outlet of the hot water area and the fuel tank. The water inlet allows the heated coolant to flow back to the fuel tank to heat the fuel tank. Here, the third pipeline is used to connect the inlet of the cold water zone and the water outlet of the main oil tank 2 , and the fourth pipeline is used to connect the outlet of the hot water zone and the water inlet of the main oil tank 2 .

In addition, a second valve 9 may be provided on the fourth pipeline to control the opening and closing of the fourth pipeline. When the fuel filled in the fuel tank is fuel that adapts to the ambient temperature (such as filling with low-grade fuel), that is, when there is no need to heat the fuel tank, the second valve 9 can be controlled to close so that the heated coolant will not be distributed. to the fuel tank.

Here, the first valve 8 and the second valve 9 may be manual valves. Alternatively, the first valve 8 and the second valve 9 can be electric valves. Specifically, the first valve 8 and the second valve 9 can be solenoid valves, and the first valve 8 and the second valve 9 are communicatively connected with the control device to The first valve 8 and the second valve 9 are automatically controlled by the control device.

In an optional embodiment, after the engine 1 is started, the control device controls the first valve 8 to close, so that the coolant that causes the engine 1 to self-heat will not enter the cold water area through the first pipeline, thereby preventing the engine 1 from self-heating. Hot coolant will not enter the heater 23 of the hydraulic oil tank 4 and will not affect the hydraulic oil tank 4 .

In an optional embodiment, the heater 23 may be disposed in the hydraulic oil tank 4 , and the heater 23 may be connected to the water collecting distributor 7 through a connecting pipeline.

Specifically, the connecting pipeline may include a water inlet pipeline and a water outlet pipeline. The water inlet of the heater 23 and the hot water area of the water collection distributor 7 are connected through the water inlet pipeline. The water outlet of the heater 23 and the cold water of the water collection distributor 7 are connected. The zones are connected through the water outlet pipeline; and the third valve 10 can be arranged on the water outlet pipeline to control the on/off of the water outlet pipeline, or the third valve 10 can be arranged on the water inlet pipeline to control the on/off of the water inlet pipeline. .

In this way, when there is no need to heat the hydraulic oil tank 4, the third valve 10 can be controlled to close so that the coolant cannot enter the heater 23, so that the hydraulic oil tank 4 will not be heated. Alternatively, when the second temperature detection element 25 detects that the temperature of the hydraulic oil tank 4 is greater than or equal to the second preset temperature, the control device controls the third valve 10 to close, thereby causing the heater 23 to stop heating the hydraulic oil tank 4 .

In an optional embodiment of the present application, the fuel circulation system may also include a third heating device. The third heating device may be disposed between the fuel inlet of the combustion system and the fuel outlet of the fuel tank to further heat the fuel. Heating improves the fluidity of the fuel and facilitates the entry of the fuel into the combustion system, thereby helping to reduce the starting time of the engine 1.

In an alternative embodiment, the third heating device may include a first heating element and a second heating element.

The first heating element can be disposed on the fuel delivery pipe between the fuel inlet of the combustion system and the fuel outlet of the fuel tank to heat the fuel passing through the fuel delivery pipe and further improve the fluidity of the fuel.

Here, the first heating element may be a resistance heating wire wrapped outside the oil delivery pipe.

Moreover, in order to ensure that the fuel can enter the first heating device 5, an electromagnetic pump 6 can also be provided on the oil delivery pipe.

The second heating element can be disposed on the fuel filter of the first heating device 5, so that the fuel can be further heated, the fluidity of the fuel can be improved, and the fuel can easily enter the combustion system.

The inlet of the fuel filter of the first heating device 5 can be connected to the oil outlet of the fuel tank, and the outlet of the fuel filter can be connected to the oil inlet of the combustion system, so that the fuel can be filtered by the fuel filter before entering the combustion system. Inside. In this way, the fuel filter can filter impurities or wax in the fuel, further improve the fluidity of the fuel, and ensure that the fuel can smoothly enter the combustion system.

Here, the second heating element may be an electric heater applied outside the fuel filter.

In an optional embodiment of the present application, as shown in Figure 1, the quick start system for the engine may also include a fuel circulation loop, a first filter 15 and a circulation pump 14, with the inlet of the fuel circulation loop and the outlet of the fuel tank The oil port is connected, the outlet of the fuel circulation circuit is connected with the oil return port of the fuel tank, and the first filter 15 and the circulation pump 14 are arranged on the fuel circulation oil path. The circulation pump 14 is used to drive the fuel to flow along the fuel circulation circuit so that The fuel can pass through the first filter 15 . Through the fuel circulation circuit and the circulation pump 14, the fuel in the fuel tank can be continuously circulated through the first filter 15 to filter the fuel so as to provide clean fuel to the engine 1 and the first heating device 5.

Here, the inlet of the fuel circulation circuit can be connected to the oil outlet of the main fuel tank 2 , and the outlet of the fuel circulation circuit can be connected to the oil return port of the main fuel tank 2 to filter the fuel in the main fuel tank 2 .

In an optional embodiment, the fuel control system may also include a liquid level detection component. The oil level detection component may be provided on the main fuel tank 2 to detect changes in the fluid level after fuel is added to the main fuel tank 2. This detects the amount of fuel added.

Both the liquid level detection element and the circulation pump 14 are communicatively connected with the control device, and the control device can control the opening and closing of the circulation pump 14 according to the detection signal of the liquid level detection element.

Specifically, when filling fuel into the main fuel tank 2 , the fuel quantity detection element is used to detect the fuel filling quantity into the main fuel tank 2 . Before filling the main fuel tank 2 with fuel, the liquid level detection element 26 detects the initial liquid level of the fuel in the main fuel tank 2; after the filling is completed, the liquid level detection element 26 detects the total fuel level in the main fuel tank 2. According to The change value of the fuel level can be obtained from the total fuel level and the initial level. When the change value of the fuel level is greater than or equal to the preset ratio, the control device controls the circulation pump 14 to start and continue to work for the preset filtration time to The fuel in the main fuel tank 2 is caused to flow along the fuel circulation circuit and pass through the first filter 15 to perform primary filtering of the fuel. In this way, impurities and the like in the oil returned from the engine 1 can be filtered through the first filter 15 , thereby improving the quality of the fuel and providing high-quality and clean fuel to the engine 1 .

It should be noted that the preset ratio may be 10%.

Change value of fuel level = (total fuel level - initial level) / total fuel level.

Here, the liquid level detection element 26 may be a liquid level gauge.

In an optional embodiment, the control device may also include a time detection module, and the time detection module may be used to detect the working duration of the circulation pump 14 . When the working time of the circulating pump 14 reaches the preset filtration time, the control device controls the circulating pump 14 to shut down.

Moreover, the time detection module can store the working hours of the circulating pump 14. When the circulating pump 14 suddenly shuts down, the time detecting module can store the working hours of the circulating pump 14; when the circulating pump 14 is powered on again, the time detecting module Detect the working time for the circulating pump 14 to work again, and obtain the working time before the circulating pump 14 is powered off. When the sum of the working time before the power outage and the working time before working again reaches the preset filtration time, the control device controls the circulation pump 14 to close and stop working. In this way, the service life of the circulation pump 14 is improved.

Here, the preset filtering time = fuel level change volume / main fuel tank volume * N hours, N can be 3 or 4, or other values, which can be set according to actual needs.

In an optional embodiment of the present application, the quick start system for the engine may also include an oil-water separator 16, a coarse filter 17 and a fine filter 18. The oil inlet of the oil-water separator 16 is used to communicate with the outlet of the fuel tank. The oil port is connected, the inlet of the coarse filter 17 is connected with the oil outlet of the oil-water separator 16, the inlet of the fine filter 18 is connected with the outlet of the coarse filter 17, and the outlet of the fine filter 18 is used for the oil inlet of the engine 1 port connection. In this way, the quality and cleanliness of the fuel can be further improved to provide high-quality, clean fuel for the engine 1 , thereby reducing the wear of the engine 1 and extending the service life of the engine 1 .

Specifically, the oil inlet of the oil-water separator 16 may be connected to the first switching valve 11 , and the outlet of the fine filter 18 may be connected to the fuel injection pump 19 of the engine 1 .

In an optional embodiment of the present application, the quick start system for the engine may also include a fourth heating device, which is used to heat the fuel to further avoid waxing of the fuel and improve the fluidity of the fuel.

Wherein, the fourth heating device may include a third heating element, a fourth heating element and a fifth heating element. The third heating element may be disposed on the oil-water separator 16, and by heating the oil-water separator 16, the oil-water separator passes through the oil-water separator. 16 for heating the fuel; the fourth heating element can be arranged on the coarse filter 17, and the fuel passing through the coarse filter 17 is heated by heating the coarse filter 17; the fifth heating element can be arranged on the fine filter 18, and The fine filter 18 is heated to heat the fuel passing through the fine filter 18 .

In this embodiment, the third heating element can be a third heating rod arranged inside the oil-water separator 16; the fourth heating element can be a first electric heater laid outside the coarse filter 17; and the fifth heating element can be A second electric heater installed outside the fine filter 18.

In an optional embodiment, the first switching valve 11 , the second switching valve, the third switching valve 12 and the fourth switching valve 13 may all be two-position three-way solenoid valves. The first switching valve 11, the second switching valve, the third switching valve 12 and the fourth switching valve 13 are communicatively connected with the control device.

Among them, the two oil inlets of the first switching valve 11 are connected to the oil outlets of the main oil tank 2 and the auxiliary oil tank 3 respectively, and the oil outlet of the first switching valve 11 is used to connect with the oil inlet of the engine 1 .

The oil inlet of the second changeover valve is used to connect with the oil outlet of the engine 1, and the two oil outlets of the second changeover valve are connected with the oil return ports of the main oil tank 2 and the auxiliary oil tank 3 respectively.

The two oil inlets of the third switching valve 12 are respectively connected with the oil outlets of the main oil tank 2 and the auxiliary oil tank 3 . The oil outlet of the third switching valve 12 is used to connect with the oil inlet of the combustion system of the first heating device 5 .

The oil inlet of the fourth switching valve 13 is used to connect with the oil outlet of the combustion system, and the two oil outlets of the fourth switching valve 13 are connected with the oil return ports of the main oil tank 2 and the auxiliary oil tank 3 respectively.

In other embodiments, the first switching valve 11 , the second switching valve, the third switching valve 12 and the fourth switching valve 13 may also be manual valves.

In an optional embodiment, the quick start system for the engine may also include a display screen, the display screen is communicatively connected with the control device, and the control device can connect the first heating device 5, the second heating device, the third heating device and the third heating device. The actual working time and set time of the four heating devices are transmitted to the display screen so that the display screen can be displayed to facilitate the operator's observation. Moreover, the display screen may be provided with a heating start button for starting the first heating device 5, the second heating device and the third heating device, so as to control the first heating device 5, the second heating device and the third heating device through the heating start button. start up.

Here, the control device may transmit the remaining working hours of the first heating device 5, the second heating device and the third heating device to the display screen for display on the display screen.

The quick start system for the engine may also include an alarm. When the first heating device 5, the second heating device, the third heating device and the fourth heating device are heated to a set time period, the control device controls the alarm to alarm to remind. The operator needs to start immediately after heating is completed. Here, the alarm is communicatively connected with the control device.

In addition, the display screen is also provided with an alarm release button. After the operator selects the alarm release button on the display screen, the alarm stops alarming. The alarm can be a buzzer.

The quick start system for the engine also includes a low-temperature battery. The low-temperature battery is used to power the electrical equipment of the working machine. Under low-temperature conditions, the low-temperature battery has a higher battery capacity than ordinary batteries, which can ensure that the remaining power after heating can meet the requirements. Engine starting requirements and improve the success rate of engine starting at low temperature. In addition, the quick start system for the engine may also include a voltage monitoring component for monitoring the voltage of the low-temperature battery. The voltage monitoring component is communicatively connected to the display screen and can transmit the monitored voltage of the low-temperature battery to the display screen for display. Displayed on the screen for easy observation by the operator.

When the voltage of the low-temperature battery is less than 25.5V, the first heating device 5, the second heating device, and the third heating device do not start.

The quick start system for the engine provided by this application effectively solves the defects of poor fuel fluidity and filter wax blockage through the first heating device 5, the third heating device and the fourth heating device. The external first heating system heats the coolant of the engine 1 by burning low-grade fuel in the auxiliary tank 3, and uses the coolant to preheat the hydraulic oil tank 4, the cylinder block of the engine 1, and the fuel tank, effectively improving the low-temperature viscosity of the hydraulic oil. Large, engine 1 is difficult to start due to low temperature damping, and is more suitable for operations in extremely cold areas. Furthermore, the fuel in the fuel tank can be preheated through the second heating device, so that the first heating device 5 absorbs the preheated fuel, which is beneficial to reducing the heating time of the first heating device 5 and the starting time of the engine 1 .

The working machine provided by the present application will be described below. The working machine described below and the quick start system for the engine described above may be mutually referenced.

This application provides a working machine, including a quick start system for an engine as described in any of the above embodiments.

The beneficial effects achieved by the working machine provided by this application are consistent with the beneficial effects achieved by the above-mentioned quick start system for engines, so they will not be described again here.

It should be noted that the above-mentioned operating machinery may be an excavator, a pump truck, or other engineering machinery.

The control method provided by the present application is described below. The control method described below and the quick start system for the engine described above can be mutually referenced.

A control method provided by this application, as shown in Figure 3, based on the control method for a quick start system of an engine described in any of the above embodiments, includes:

Get the actual temperature of engine 1;

Compare the actual temperature of the engine 1 with the first preset temperature;

When the actual temperature of the engine 1 is less than the first preset temperature, the first heating device 5 is controlled to start heating the coolant in the coolant circulation system to heat the engine 1 and the fuel tank;

When the actual temperature of the engine 1 is greater than or equal to the first preset temperature, the first heating device 5 is controlled to turn off.

The first heating device 5 is controlled by the detection signal of the first temperature detection element 24 to heat the coolant in the coolant circulation system to heat the engine 1 and the fuel tank, so that the engine 1 can start smoothly in a low-temperature environment.

In optional embodiments, the control method may also include:

Get the actual temperature of hydraulic oil tank 4;

Compare the actual temperature of the hydraulic oil tank 4 with the second preset temperature;

When the actual temperature of the hydraulic oil tank 4 is less than or equal to the second preset temperature, the third valve is controlled to open to connect the heater with the coolant circulation system;

When the actual temperature of the hydraulic oil tank 4 is greater than the second preset temperature, the third valve 10 is controlled to close.

In optional embodiments, the control method may also include:

When the actual temperature of the engine reaches the first preset temperature, the first switching valve 11 is controlled to connect the oil inlet of the engine 1 to the oil outlet of the auxiliary oil tank 3; the second switching valve is controlled to connect the oil outlet of the engine 1 to the oil outlet. The oil return port connection of auxiliary oil tank 3;

When the engine 1 starts, the first switching valve 11 is controlled to connect the oil inlet of the engine 1 to the oil outlet of the main oil tank 2; the second switching valve is controlled to connect the oil outlet of the engine 1 to the oil return of the main tank 2. port connection.

In this way, when the temperature of the engine 1 reaches the first preset temperature, the engine is allowed to absorb the fuel from the auxiliary fuel tank 3. The low-grade fuel in the auxiliary fuel tank 3 has good flow performance and is easy to enter the engine 1 to prepare for the ignition of the engine 1; the engine 1 After starting, the engine 1 is allowed to work using the high-grade fuel in the main fuel tank 2, which is beneficial to reducing costs.

In an optional embodiment of the present application, the control method may also include:

When the actual temperature of the engine 1 is lower than the first preset temperature, the second heating device is controlled to start to heat the fuel in the main fuel tank 2 .

In this way, the fluidity of the fuel can be improved, making it easier for the fuel to enter the first heating device 5 and the engine 1 , effectively reducing the heating time of the engine 1 , improving the heating efficiency, and facilitating the quick start of the engine 1 .

In an optional embodiment of the present application, as shown in Figure 4, the control method may also include:

Obtain the change value of the fuel level in the main fuel tank 2 after the fuel filling is completed;

Compare the change in fuel level with a preset ratio;

When the change value of the fuel level is greater than or equal to the preset ratio, the circulation pump 14 is controlled to start and continue to operate for a preset filtering time, so that the first filter 15 circulates and filters the fuel.

It should be noted that the change value of the fuel level = (total fuel level - initial level) / total fuel level. Moreover, the initial liquid level here is the liquid level in the main fuel tank 2 before filling the main fuel tank 2 with fuel. The preset ratio here can be 10%. Here, before filling the main fuel tank 2 with fuel or before starting the working machine, the preset ratio can be set through the display screen.

Obtain the working hours before the circulation pump 14 is powered off;

Compare the working time before the circulation pump 14 is powered off with the preset filtration time;

When the working time before the circulation pump 14 is powered off is less than the preset filtration time, the circulation pump 14 is controlled to continue working until the preset filtration time is reached.

Obtain the working hours of the first heating device 5 and the third heating device;

When the working duration of the first heating device 5 and the third heating device reaches the first preset duration, the fourth heating device is controlled to start;

When the working duration of the first heating device 5 and the third heating device reaches the second preset duration, the first heating device 5 , the third heating device and the fourth heating device are controlled to turn off.

Before starting the engine 1, the heating duration can be set for the first heating device 5 and the third heating device. Specifically, the working duration of the first heating device 5 and the third heating device can be set to the second preset duration. The first heating device 5 and the third heating device are started to heat the coolant and the fuel flowing into the first heating device 5, and the control device can obtain the actual working hours of the first heating device 5 and the third heating device in real time. When the actual working time of the first heating device 5 and the third heating device reaches the first preset time, the control device controls the fourth heating device to start and heat the pipeline between the oil inlet of the engine 1 and the fuel tank. At this time, The first heating device 5, the third heating device and the fourth heating device heat at the same time; until the working time of the first heating device 5 and the third heating device reaches the second preset time, the control device controls the first heating device 5, the third heating device. The third heating device and the fourth heating device are turned off and heating is stopped. At the same time, the control device controls the alarm to alert the operator that heating is completed.

Here, the second preset duration may be five minutes longer than the first preset duration.

In an optional embodiment, while obtaining the operating time of the first heating device 5 and the third heating device, the operating time of the second heating device is obtained.

Among them, the first heating device 5, the second heating device and the third heating device have the same working time.

In optional embodiments, the control method may also include:

When the first temperature detection element 24 detects that the temperature of the engine 1 is higher than minus 15°C, that is, when the first temperature detection element 24 detects that the ambient temperature is higher than minus 15°C, the engine 1 is controlled to start. Here, the first preset temperature can be It's minus 15℃.

In an optional embodiment, the control device may be preset with four temperature ranges, namely a first temperature range, a second temperature range, a third temperature range and a third temperature range.

Here, the first temperature range may be minus 15°C to minus 19°C;

The second temperature range may be minus 20°C to minus 27°C;

The third temperature range may be minus 28°C to minus 35°C;

The fourth temperature range may be below minus 35°C.

When the first temperature detection element 24 detects that the temperature of the engine 1 is within the first temperature range, the first heating device 5, the second heating device and the third heating device are controlled to work for 10 minutes. When the heating device and the third heating device work for 5 minutes, the fourth heating device is controlled to work for 5 minutes.

When the first temperature detection element 24 detects that the temperature of the engine 1 is in the second temperature range, the first heating device 5, the second heating device and the third heating device are controlled to work for 15 minutes. When the device and the third heating device work for 10 minutes, control the fourth heating device to work for 5 minutes.

When the first temperature detection element 24 detects that the temperature of the engine 1 is in the third temperature range, the first heating device 5, the second heating device and the third heating device are controlled to work for 20 minutes. When the device and the third heating device work for 15 minutes, control the fourth heating device to work for 5 minutes.

When the first temperature detection element 24 detects that the temperature of the engine 1 is in the fourth temperature range, the first heating device 5, the second heating device and the third heating device are controlled to work for 25 minutes. The device and the third heating device work for 20 minutes, and the fourth heating device is controlled to work for 5 minutes.

In this way, the fuel can be heated in time intervals according to the ambient temperature.

In an optional embodiment, after the working machine is powered on, the operator can choose whether to activate the first heating device 5 , the second heating device, and the third heating device according to the temperature detected by the first temperature detection element 24 .

As shown in Figure 5, the control method of the heating system (the heating system includes a first heating device 5, a third heating device and a fourth heating device) when using the main fuel tank 2 and the auxiliary fuel tank 3; as shown in Figure 6, only using Control method of a heating system (the heating system includes a first heating device 5, a second heating device, a third heating device and a fourth heating device) in the case of the main oil tank 2.

Moreover, the display screen can display that when the temperature is lower than minus 15°C, that is, when the first temperature detection element detects that the temperature of the engine is lower than minus 15°C, the first heating device 5, the second heating device and the third heating device are started. . When the first heating device 5, the second heating device and the third heating device are started, the set working time and the remaining working time are displayed on the display screen; when the first heating device 5, the second heating device and the third heating device When the remaining working time reaches 5 minutes, start the fourth heating device.

After heating is completed, the alarm sounds. After the alarm is cleared on the display screen, the operator starts the engine 1.

Before the operator starts the working machine, the working machine is powered on and the ambient temperature is detected through the first temperature detection element 24. The display screen sends the heating command to the control device through CAN communication. The control device automatically detects the temperature according to the temperature detected by the first temperature detection element 24. The heating time is selected so that the first heating device 5, the second heating device, the third heating device and the fourth heating device work according to the set duration.

The device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in One location, or it can be distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Persons of ordinary skill in the art can understand and implement the method without any creative effort.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

A quick start system for engines consisting of:

Fuel tank;

Engine, the oil inlet of the engine is connected to the oil outlet of the fuel tank, and the oil outlet of the engine is connected to the oil return port of the fuel tank;

A first temperature detection element used to detect the temperature of the engine;

A coolant circulation system connected to the cylinder water jacket of the engine and the water jacket of the fuel tank;

a first heating device for heating the coolant in the coolant circulation system;

A control device is communicatively connected to both the first heating device and the first temperature detection element, and the control device controls the opening and closing of the first heating device according to the detection signal of the first temperature detection element.
The quick start system for an engine according to claim 1, further comprising:

Hydraulic tank;

A heater is used to heat the hydraulic oil tank, and the heater is connected to the coolant circulation system through a connecting pipeline.
The quick start system for an engine according to claim 2, further comprising:

a second temperature detection element used to detect the temperature of the hydraulic oil tank;

The third valve controls the opening and closing of the connecting pipeline;

Wherein, the second temperature detection element and the third valve are communicatively connected with the control device, and the control device controls the opening and closing of the third valve according to the detection signal of the second temperature detection element.
The quick starting system for an engine according to any one of claims 1 to 3, wherein the first heating device includes:

A heat exchanger, the heat exchanger is connected to the coolant circulation system;

A combustion system is used to heat the heat exchanger. The oil inlet of the combustion system is connected to the oil outlet of the fuel tank. The oil outlet of the combustion system is connected to the oil return port of the fuel tank. ;

Wherein, the control device controls the opening and closing of the combustion system according to the detection signal of the first temperature detection element.
The quick starting system for an engine according to claim 4, wherein the fuel tank includes:

The main fuel tank is used to store the first grade of fuel;

Auxiliary fuel tank, used to store second grade fuel;

Moreover, the quick start system for the engine also includes:

a first switching valve, used to control the switching conduction between the oil inlet of the engine and the oil outlet of the main oil tank or the oil outlet of the auxiliary oil tank;

The second switching valve is used to control the oil outlet of the engine to switch to the oil return port of the main oil tank or the oil return port of the auxiliary oil tank.
The quick start system for an engine according to claim 5, wherein the quick start system for an engine further includes:

a third switching valve, used to control the switching conduction between the oil inlet of the combustion system and the oil outlet of the main oil tank or the oil outlet of the auxiliary oil tank;

The fourth switching valve is used to control the switching and conduction between the oil outlet of the combustion system and the oil return port of the main oil tank or the oil return port of the auxiliary oil tank.
The quick start system for an engine according to any one of claims 4 to 6, wherein the fuel tank includes a main fuel tank, and the oil inlet of the combustion system is connected to the oil outlet of the main fuel tank, so The oil outlet of the combustion system is connected to the oil return port of the main fuel tank; the oil inlet of the engine is connected to the oil outlet of the main fuel tank, and the oil outlet of the engine is connected to the return port of the fuel tank. Oil port connection.
The quick starting system for an engine according to claim 5 or 7, further comprising a second heating device, the second heating device being disposed in the main fuel tank.
The quick start system for an engine according to any one of claims 4 to 8, further comprising:

A third heating device is provided between the oil inlet of the combustion system and the oil outlet of the fuel tank.
The quick starting system for an engine according to claim 9, wherein the third heating device includes:

A first heating element is provided on the first fuel pipeline between the fuel inlet of the combustion system and the fuel outlet of the fuel tank;

The second heating element is arranged on the fuel filter of the first heating device.
The quick start system for an engine according to any one of claims 1 to 10, further comprising:

A fuel circulation loop, the inlet of the fuel circulation loop is connected to the oil outlet of the fuel tank, and the outlet of the fuel circulation loop is connected to the oil return port of the fuel tank;

The first filter is arranged on the fuel circulation oil path;

A circulation pump is provided on the fuel circulation oil path, and is used to drive fuel to flow along the fuel circulation circuit.
The quick start system for an engine according to any one of claims 9 to 11, further comprising:

An oil-water separator, the oil inlet of the oil-water separator is connected to the oil outlet of the fuel tank;

A coarse filter, the inlet of the coarse filter is connected to the oil outlet of the oil-water separator;

A fine filter, the inlet of the fine filter is connected to the outlet of the rough filter, and the outlet of the fine filter is connected to the oil inlet of the engine.
The quick starting system for an engine according to claim 12, further comprising a fourth heating device, the fourth heating device comprising:

A third heating element is provided in the oil-water separator;

A fourth heating element is provided on the coarse filter;

The fifth heating element is arranged on the fine filter.
The quick starting system for an engine according to any one of claims 4 to 13, wherein the coolant circulation system includes:

A water collecting distributor includes a cold water area and a hot water area, the outlet of the cold water area is connected to the inlet of the heat exchanger, and the inlet of the hot water area is connected to the outlet of the heat exchanger;

A first pipeline for connecting the inlet of the cold water area and the water outlet of the engine, and a first valve for controlling the opening and closing of the first pipeline is provided on the first pipeline;

a second pipeline for connecting the outlet of the hot water zone and the water inlet of the engine;

A third pipeline used to connect the inlet of the cold water area and the water outlet of the fuel tank;

A fourth pipeline is used to connect the outlet of the hot water zone and the water inlet of the fuel tank. The fourth pipeline is provided with a second valve for controlling the opening and closing of the fourth pipeline.
A working machine includes the quick start system for an engine according to any one of claims 1 to 14.
A control method for a quick start system of an engine, including:

Get the actual temperature of the engine;

Compare the actual temperature of the engine with the first preset temperature;

When the actual temperature of the engine is less than the first preset temperature, control the first heating device to start heating the coolant in the coolant circulation system;

When the actual temperature of the engine is greater than or equal to the first preset temperature, the first heating device is controlled to turn off.
The control method for a quick start system of an engine according to claim 16, further comprising:

Get the actual temperature of the hydraulic tank;

Compare the actual temperature of the hydraulic oil tank with the second preset temperature;

When the actual temperature of the hydraulic oil tank is less than or equal to the second preset temperature, control the third valve to open;

When the actual temperature of the hydraulic oil tank is greater than the second preset temperature, the third valve is controlled to close.
The control method for a quick start system of an engine according to claim 16 or 17, further comprising:

When the actual temperature of the engine is less than the first preset temperature, the second heating device is controlled to start.
The control method for a quick start system of an engine according to any one of claims 16 to 18, further comprising:

Obtain the change value of the fuel level in the main fuel tank after the fuel filling is completed;

Compare the change value of the fuel level with a preset ratio;

When the change value of the fuel level is greater than or equal to the preset ratio, the circulation pump is controlled to start and continue to operate for a preset filtering time, so that the first filter circulates and filters the fuel.
The control method for a quick start system of an engine according to any one of claims 16 to 19, further comprising:

Obtain the working hours of the first heating device and the third heating device;

When the working duration of the first heating device and the third heating device reaches the first preset duration, control the fourth heating device to start;

When the working time of the first heating device and the third heating device reaches the second preset time length, the first heating device, the third heating device and the fourth heating device are controlled to be turned off.