Engine starting control system and vehicle

Abstract

The utility model relates to the technical field of engine control, and discloses an engine starting control system and a vehicle, the engine starting control system comprises a cooling liquid flow dividing module and an oil rail tightly attached to the vehicle, and the two ends of the cooling liquid flow dividing module communicate with a cooling system of an engine to form a loop; the control module is electrically connected with the power module and the heating module in the cooling system; and the control module is used for receiving a starting signal of the engine, starting the power module according to the starting signal to drive the cooling liquid to circularly flow in the cooling system and the cooling liquid shunting module, and starting the heating module to heat the cooling liquid under the starting condition of meeting the preheating function of the engine. When the engine is preheated, the heated cooling liquid is guided to the oil rail through the additionally arranged cooling liquid flow dividing module so as to heat fuel in the oil rail at the same time, and the situation that the fuel is combusted insufficiently is avoided.

Description

Technical Field

[0001] The present application relates to the field of engine control technology, and in particular to an engine starting control system and a vehicle. Background Art

[0002] The fuel of new energy vehicles has low activity in low-temperature environments, and incomplete combustion may make it difficult to start the engine.

[0003] Related technologies modify the vehicle's fuel rail structure, adding a heating module and a heating control module to heat the fuel in the rail. The engine is started only after the fuel reaches a certain temperature, thus avoiding incomplete combustion. However, modifying the fuel rail structure and adding additional heating and heating control modules significantly increase vehicle production costs. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides an engine starting control system and a vehicle.

[0005] In a first aspect, the present application provides an engine starting control system, comprising:

[0006] A coolant diversion module is closely attached to the oil rail of the vehicle, and both ends of the coolant diversion module are connected to the cooling system of the engine to form a loop;

[0007] a control module, electrically connected to the power module and the heating module in the cooling system respectively;

[0008] The control module is used to receive a start signal of the engine, start the power module according to the start signal to drive the coolant to circulate in the cooling system and the coolant diversion module, and start the heating module to heat the coolant in the cooling system when the start conditions of the engine preheating function are met.

[0009] In one embodiment, the coolant diversion module is provided with a liquid inlet and a liquid outlet, the liquid inlet is located below the oil rail, and the liquid outlet is located above the oil rail.

[0010] In one embodiment, the liquid inlet is provided on a coolant delivery pipe in the cooling system, and the liquid inlet is close to the heating module.

[0011] In one embodiment, the coolant diversion module includes a coolant diversion pipe, a cavity is provided in the coolant diversion pipe, and the oil rail is arranged in the cavity.

[0012] In one embodiment, the coolant diversion module includes a coolant diversion pipe, and the coolant diversion pipe surrounds the outer side of the oil rail.

[0013] In one embodiment, the activation condition of the engine preheating function includes that the first actual temperature of the coolant is less than a first preset temperature;

[0014] The engine start control system further includes:

[0015] a coolant temperature sensing module, disposed in the coolant delivery pipeline, for collecting the first actual temperature;

[0016] The control module is electrically connected to the coolant temperature sensing module.

[0017] In one embodiment, the control module is further configured to turn off the heating module and start the engine when the first actual temperature is greater than a first target temperature.

[0018] In one embodiment, the activation condition of the engine preheating function includes that the second actual temperature of the fuel rail is less than a second preset temperature;

[0019] The engine start control system further includes:

[0020] a fuel rail temperature sensing module, disposed on the fuel rail and configured to collect a second actual temperature of the fuel rail;

[0021] The control module is electrically connected to the fuel rail temperature sensing module.

[0022] In one embodiment, the control module is further configured to turn off the heating module and start the engine when the second actual temperature is greater than a second target temperature.

[0023] In a second aspect, the present application provides a vehicle comprising the engine start control system described in the first aspect.

[0024] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present application.

[0025] The beneficial effects that can be achieved by the above-mentioned engine start control system and vehicle include: if preheating is required when the engine is started, the power module and heating module in the engine's cooling system will be automatically started. After the heating module heats the coolant, the power module will provide power for the coolant to circulate in the cooling system. Through the added coolant diversion module, the heated coolant can be guided to the oil rail to heat the fuel in the oil rail at the same time, thereby avoiding incomplete combustion of the fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a module diagram of an engine start control system in an embodiment of the present application;

[0027] Figure 2 Schematic diagram of the flow of the coolant in the embodiment of the present application;

[0028] Figure 3 This is a side view of the coolant diversion module in an embodiment of the present application;

[0029] Figure 4 This is a first structural schematic diagram of the coolant diversion module in an embodiment of the present application;

[0030] Figure 5 This is a second structural schematic diagram of the coolant diversion module in an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0032] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. The illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the shape, quantity and proportion of each component can be changed at will, and the component layout may also be more complicated.

[0033] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size shall still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and objectives that can be achieved by the present utility model.

[0034] The directions or positional relationships indicated in this specification, such as "upper," "lower," "left," "right," "center," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential," are based on the directions or positional relationships shown in the accompanying drawings and are intended solely for the purpose of simplifying the description. They do not indicate or imply that the devices, modules, or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Generally speaking, the engine cooling system includes:

[0036] Coolant: It is the medium that transfers heat in the cooling system.

[0037] Liquid storage tank (or expansion tank): used to store coolant and maintain the pressure and flow of coolant to ensure stable circulation of coolant.

[0038] Power module: Pressurizes the coolant to ensure efficient circulation within the cooling system.

[0039] Heating module: When the temperature is low, the coolant is heated and combined with the power module, the heated coolant circulates in the cooling system to preheat the engine and achieve low-temperature starting of the engine.

[0040] The power module is used to provide power for the coolant to circulate in the cooling system, such as a water pump. The heating module is used to heat the coolant in the cooling system, such as an electric heating wire heater, a PTC heater, etc.

[0041] In addition, the heating module and the power module can also be combined into a device having both heating and power driving functions, such as an electric heating water pump.

[0042] In order to successfully start the engine in a low-temperature environment, the engine start control system usually detects the ambient temperature, coolant temperature, etc. when receiving the engine start signal. If the ambient temperature and / or coolant temperature are low, the heating module is first started to heat the engine coolant, and the power module in the cooling system is used to push the heated coolant to circulate in the cooling system, so that the engine can quickly heat up to normal operating temperature.

[0043] Based on this, the present application proposes an engine starting control system, which uses the heated coolant to preheat the engine while also using the heated coolant to heat the fuel in the fuel rail.

[0044] like Figure 1 As shown, in one embodiment, the engine start control system includes:

[0045] The coolant diversion module is closely attached to the oil rail of the vehicle, and both ends of the coolant diversion module are connected to the engine cooling system to form a loop;

[0046] The control module is electrically connected to the power module and the heating module in the cooling system respectively;

[0047] The control module is used to receive the engine start signal, start the power module according to the start signal, drive the coolant to circulate in the cooling system and the coolant diversion module, and start the heating module to heat the coolant in the cooling system when the start conditions of the engine preheating function are met.

[0048] In cold environments, engines can have difficulty starting due to poor fuel flow and atomization. Heating the fuel rail ensures smooth fuel flow and atomization during startup, improving engine starting efficiency. Furthermore, heating the fuel rail reduces pollutant emissions during cold starts, significantly improving vehicle emissions performance.

[0049] Based on this embodiment, there is no need to modify the oil rail structure, nor to add an additional heating module and heating control module. Only a coolant diversion module that is closely attached to the vehicle's oil rail is required. When the engine preheating function is started and the engine is preheated by the heated coolant, the heated coolant is simultaneously guided to the coolant diversion module to heat the fuel in the oil rail, thereby increasing the activity of the fuel, avoiding incomplete combustion of the fuel, and increasing the probability of successful engine starting.

[0050] For example, see Figure 2 In the cooling system of the engine, the coolant delivery pipe forms a first loop in the cooling system, and both ends of the coolant diversion pipe are connected to the cooling system to form a second loop.

[0051] The electric heating water pump serves as both a heating module and a power module, and is installed on the coolant delivery pipeline. The inlet of the coolant diversion pipeline can be connected to the water outlet of the electric heating water pump, and the outlet of the coolant diversion pipeline can be connected to any location on the coolant delivery pipeline in the engine cooling system.

[0052] After receiving the engine start signal, the control module activates the power drive function of the electric heating water pump in accordance with the start signal, driving the coolant into the cooling system and the coolant shunt pipe for circulation. When the engine preheating start conditions are met, the control module activates the heating function of the electric heating water pump to heat the coolant. The heated coolant circulates in the cooling system to preheat the engine, and simultaneously enters the coolant shunt pipe to heat the fuel in the fuel rail.

[0053] In one embodiment, the activation condition of the engine preheating function includes a first actual temperature of the coolant being less than a first preset temperature.

[0054] In this regard, the engine start control system also includes:

[0055] A coolant temperature sensing module is provided in the coolant delivery pipeline and is used to collect a first actual temperature;

[0056] The control module is electrically connected to the coolant temperature sensing module.

[0057] Based on this, after receiving the engine start signal, the control module first starts the power module according to the start signal, drives the coolant to circulate in the cooling system and the coolant diversion module, and then obtains the first actual temperature of the coolant through the coolant temperature sensing module. When the first actual temperature of the coolant is lower than the first preset temperature, the heating module is started to heat the coolant. While using the coolant to preheat the engine, the fuel in the fuel rail is also heated.

[0058] Accordingly, the control module is further configured to start the engine when the engine start condition is met. In one embodiment, the control module is further configured to turn off the heating module and start the engine when the first actual temperature is greater than the first target temperature.

[0059] That is, the control module also monitors the first actual temperature of the coolant in real time through the coolant temperature sensor module. When the first actual temperature is greater than the first target temperature, it indicates that the engine has heated up to the normal operating temperature, and the heating module can be turned off to stop heating and start the engine.

[0060] Since the engine preheating function is triggered by the coolant temperature, the first preset temperature required is usually lower than the temperature at which the fuel in the fuel rail needs to be heated. In order to increase the probability of successful engine starting, the fuel rail temperature can be used as a starting condition to trigger the engine preheating function.

[0061] In one embodiment, the activation condition of the engine preheating function includes that the second actual temperature of the fuel rail is less than a second preset temperature, wherein the second preset temperature is greater than the first preset temperature.

[0062] In this regard, the engine start control system also includes:

[0063] A fuel rail temperature sensor module is provided on the fuel rail and is used to collect a second actual temperature of the fuel rail;

[0064] The control module is electrically connected to the fuel rail temperature sensor module.

[0065] Based on this, after receiving the engine start signal, the control module first starts the power module according to the start signal, drives the coolant to circulate in the cooling system and the coolant diversion module, and then obtains the second actual temperature of the oil rail through the oil rail temperature sensing module. When the second actual temperature of the oil rail is lower than the second preset temperature, the heating module is started to heat the coolant. While using the coolant to preheat the engine, the fuel in the oil rail is also heated.

[0066] Accordingly, the control module is further configured to start the engine when the engine start condition is satisfied. In one embodiment, the control module is further configured to turn off the heating module and start the engine when the second actual temperature is greater than the second target temperature.

[0067] That is, the control module also monitors the second actual temperature of the fuel rail in real time through the fuel rail temperature sensor module. When the second actual temperature is greater than the second target temperature, it indicates that the fuel in the fuel rail has been heated. The heating module can be turned off to stop heating and the engine can be started.

[0068] Furthermore, in order to improve the heating efficiency, the retention time of the heated coolant in the coolant diversion module can be prolonged so that the temperature of the coolant can be fully transferred to the oil rail.

[0069] The coolant diversion module is provided with a liquid inlet and a liquid outlet. In one embodiment, the liquid inlet is located below the oil rail, and the liquid outlet is located above the oil rail.

[0070] Based on this, the coolant in the coolant diversion module gradually increases from the bottom of the oil rail to submerging the oil rail, so that the temperature of the coolant can be fully transferred to the oil rail, thereby improving the heating efficiency of the fuel in the oil rail.

[0071] like Figure 2 As shown, in another embodiment, the coolant diversion module includes a coolant diversion pipe, and the coolant diversion pipe surrounds the outer side of the oil rail.

[0072] Based on this, the length of the coolant shunt pipe is increased in a circumferential manner, so that the residence time of the coolant in the coolant shunt pipe is increased, so that the temperature of the coolant can be fully transferred to the fuel rail, thereby improving the heating efficiency of the fuel in the fuel rail.

[0073] In order to improve the heating efficiency, the contact area between the coolant diversion module and the oil rail can also be increased.

[0074] like Figure 3 As shown, in one embodiment, the coolant diversion module includes a coolant diversion pipe, a cavity is provided in the coolant diversion pipe, and the oil rail is provided in the cavity.

[0075] Based on this, by setting a cavity in the coolant diversion pipe, the coolant diversion module can wrap the oil rail in all directions, maximizing the contact area between the two, so that the temperature of the coolant can be quickly transferred to the oil rail, thereby improving the heating efficiency of the fuel in the oil rail.

[0076] In addition, in order to improve heating efficiency, reduce and shorten the temperature loss of coolant during transportation.

[0077] In one embodiment, the liquid inlet is provided on a coolant delivery pipe in the cooling system, and the liquid inlet is close to the heating module.

[0078] Based on this, the coolant that has just passed through the heating module is directly introduced into the coolant diversion module, so that the coolant with a higher temperature can be used to heat the fuel in the fuel rail, thereby improving the heating efficiency of the fuel in the fuel rail.

[0079] The present application also provides a vehicle, which includes the engine starting control system in any one of the above embodiments.

[0080] Based on the above engine starting control system, when starting the engine in a low temperature environment, the coolant used to preheat the engine can be used to heat the fuel in the fuel rail at the same time to increase the activity of the fuel, so that the fuel can be fully burned and the probability of successful engine starting is increased.

[0081] Furthermore, there is no need to modify the oil rail structure or add additional heating modules and heating control modules, which can significantly save vehicle production costs.

[0082] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the concept of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be based on the appended claims.

Claims

1. An engine starting control system, characterized in that: The engine start control system includes: A coolant diversion module is closely attached to the oil rail of the vehicle, and both ends of the coolant diversion module are connected to the cooling system of the engine to form a loop; a control module, electrically connected to the power module and the heating module in the cooling system respectively; The control module is used to receive a start signal of the engine, start the power module according to the start signal to drive the coolant to circulate in the cooling system and the coolant diversion module, and start the heating module to heat the coolant when the start conditions of the engine preheating function are met.

2. The engine starting control system according to claim 1, characterized in that: The coolant diversion module is provided with a liquid inlet and a liquid outlet, wherein the liquid inlet is located below the oil rail, and the liquid outlet is located above the oil rail.

3. The engine starting control system according to claim 2, characterized in that: The liquid inlet is arranged on the coolant delivery pipeline in the cooling system, and the liquid inlet is close to the heating module.

4. The engine starting control system according to claim 1, wherein: The coolant diversion module includes a coolant diversion pipe, a cavity is provided in the coolant diversion pipe, and the oil rail is arranged in the cavity.

5. The engine starting control system according to claim 1, wherein: The coolant diversion module includes a coolant diversion pipeline, and the coolant diversion pipeline surrounds the outer side of the oil rail.

6. The engine starting control system according to claim 1, wherein: The activation condition of the engine preheating function includes that the first actual temperature of the coolant is less than a first preset temperature; The engine start control system further includes: a coolant temperature sensing module, disposed in the coolant delivery pipeline, for collecting the first actual temperature; The control module is electrically connected to the coolant temperature sensing module.

7. The engine starting control system according to claim 6, characterized in that: The control module is further configured to turn off the heating module and start the engine when the first actual temperature is greater than a first target temperature.

8. The engine starting control system according to claim 1, wherein: The activation condition of the engine preheating function includes that the second actual temperature of the fuel rail is less than a second preset temperature; The engine start control system further includes: a fuel rail temperature sensing module, disposed on the fuel rail and configured to collect a second actual temperature of the fuel rail; The control module is electrically connected to the fuel rail temperature sensing module.

9. The engine starting control system according to claim 8, characterized in that: The control module is further configured to turn off the heating module and start the engine when the second actual temperature is greater than a second target temperature.

10. A vehicle, characterized in that: The engine starting control system comprises the engine starting control system according to any one of claims 1 to 9.

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