Heating device and vehicle engine system, control method and vehicle

Abstract

The application provides a heating device and a vehicle engine system, a control method and a vehicle, wherein the heating device comprises a liquid reservoir with an accommodating cavity formed inside, the liquid reservoir is provided with a liquid inlet and a liquid outlet which are communicated with the accommodating cavity, a gas conveying pipe is sleeved outside the liquid reservoir, a gas channel is formed between the gas conveying pipe and the outer surface of the liquid reservoir, the gas conveying pipe is provided with a gas inlet and a gas outlet which are communicated with the gas channel, and a heating part acts on the gas conveying pipe, and the heating part heats the airflow flowing through the gas channel in the powered state. The heating device of the application can heat the airflow flowing through the gas channel, and the temperature increase of the airflow can transfer heat to the liquid inside the liquid reservoir, thereby realizing the common preheating of the gas and the liquid.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to a heating device. The invention also relates to a vehicle engine system, a vehicle engine system control method, and a vehicle. Background Technology

[0002] During cold starts and warm-up of a car, the engine speed is very low, the vacuum in the intake manifold is very high, and the intake airflow speed and temperature are both very low, resulting in poor gasoline atomization and evaporation, making it difficult to form a uniform combustible mixture with air. In order to start smoothly, the amount of fuel injected must be increased to provide a rich mixture to the gasoline engine.

[0003] In addition, the high concentration of residual exhaust gas in the cylinder and the low temperature in the combustion chamber make the engine combustion very unstable, prone to misfires and other abnormal combustion phenomena, resulting in large amounts of hydrocarbon and carbon monoxide emissions. Because the exhaust temperature is lower than the ignition temperature of the catalyst (250℃~350℃), the three-way catalytic converter is not yet functional, thus causing a large amount of hydrocarbon emissions.

[0004] Studies have shown that hydrocarbon emissions account for 60%-80% of the total emissions during the cold start and warm-up test phases of the entire test cycle. Rich mixtures, low compression temperatures, and wall temperatures all contribute to incomplete combustion, increasing hydrocarbon and carbon monoxide emissions.

[0005] When a car engine is cold-started, almost all of the lubricating oil supplied to the friction pairs in the previous working state falls back into the oil pan. Therefore, the main friction pairs are in a state of dry friction or critical friction. This dry friction (metal-to-metal friction without lubricating oil) is common, and some data show that 80% of engine wear comes from dry friction.

[0006] Dry friction results in increased fuel and oil consumption, increased harmful emissions, and ultimately premature engine failure. In winter, especially at sub-zero temperatures, cold starts produce even more severe dry friction than normal cold starts. This is because low temperatures significantly increase oil viscosity and reduce fluidity, leading to increased system resistance, particularly in the filter. The oil cannot smoothly and evenly penetrate all friction surfaces, inevitably increasing dry friction time and wear during engine start-up, and making the engine difficult to start. Summary of the Invention

[0007] In view of this, the present invention aims to provide a heating device for heating the airway.

[0008] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0009] A heating device includes: a liquid reservoir having a cavity inside, the liquid reservoir having an inlet and an outlet communicating with the cavity; a gas delivery pipe sleeved on the outside of the liquid reservoir; a gas passage formed between the gas delivery pipe and the outer surface of the liquid reservoir, the gas delivery pipe having an inlet and an outlet communicating with the gas passage; and a heating unit acting on the gas delivery pipe, the heating unit heating the gas flow passing through the gas passage when energized.

[0010] Furthermore, the heating element is an electromagnetic coil wound around the gas delivery pipe.

[0011] Furthermore, the power supply unit constituting the power supply to the heating unit includes a power source, an electromagnetic switch for controlling the power supply unit to turn on, a converter connected to the electromagnetic switch, and an inverter connected between the converter and the heating unit.

[0012] Furthermore, an electromagnetic shielding cover is provided on the outside of the heating part.

[0013] Furthermore, a heat sink located within the air passage is provided on the outer surface of the liquid reservoir.

[0014] Furthermore, an insulating and heat-insulating layer is provided inside the heating device and fitted outside the gas delivery pipe.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The heating device of the present invention has a heating unit that can heat the airflow flowing through the air passage. The increased temperature of the airflow can transfer heat to the liquid inside the reservoir, thereby achieving common preheating of the gas and the liquid.

[0017] In addition, the electromagnetic coil can generate a magnetic field using alternating current, and use the electromagnetic induction heat generated in the magnetic field to heat the gas in the airway and the liquid in the reservoir, thereby achieving rapid preheating of the gas and liquid.

[0018] The liquid reservoir of the present invention has a heat sink connected to the outer surface of the reservoir and located in the air passage. The heat sink structure can conduct heat, and the heat energy is conducted from the heated gas in the air passage to the liquid in the reservoir to heat the liquid.

[0019] In addition, the insulation and heat insulation layer can trap the heat generated by electromagnetic induction inside the gas delivery pipe, thereby reducing heat loss.

[0020] Another object of the present invention is to provide a vehicle engine system, including an engine, a catalytic converter connected to the engine intake port via a controllable first intake channel, a pumping device disposed at the engine coolant inlet, a temperature control valve and a heat dissipation device sequentially connected at the engine coolant outlet, and a heating device as described above connected upstream of the engine intake port and the coolant inlet.

[0021] The air inlet of the heating device is controllably connected to the air filter, and the air outlet is connected to a controllably connected second air inlet channel, which is connected to the air inlet port of the engine; the liquid outlet of the heating device is connected to the liquid inlet of the pumping device, and the liquid inlet is connected to a first liquid inlet channel, which is connected to the liquid outlet of the cooling device.

[0022] Furthermore, a controllable third air intake channel is connected in parallel to the air outlet, and the third air intake channel is connected to the air intake end of the catalyst.

[0023] Furthermore, a controllable third air intake channel is connected in parallel to the air outlet, and the third air intake channel is connected to the air intake end of the catalyst.

[0024] In the vehicle engine system of the present invention, when the engine is started normally, the heating device is not activated. At this time, the air entering through the air filter enters the engine through the first intake passage to participate in combustion. When the engine intake air temperature is low, the heating device heats the cold air entering through the air filter and enters the engine through the second and third intake passages to participate in combustion. At the same time, the heating device also heats the liquid in the first liquid inlet passage to increase the engine temperature and shorten the engine preheating time, thereby achieving rapid engine preheating.

[0025] In addition, the present invention also proposes a control method for a vehicle engine system, which is based on the vehicle engine system described above and includes the following steps:

[0026] Start the engine;

[0027] Control the heating device to start heating;

[0028] Control the opening of the first air intake channel, the second air intake channel, and the third air intake channel; simultaneously control the opening of the first liquid inlet channel;

[0029] When the temperature at the engine coolant outlet reaches the target threshold, the heating device is controlled to stop heating, while the second air intake passage, the third air intake passage, and the first coolant inlet passage are closed, and the second coolant inlet passage is controlled to open.

[0030] Furthermore, the vehicle engine system is controlled by a controller.

[0031] Compared to existing technologies, the vehicle engine system control method of this invention starts the engine and activates the heating device. The heating device heats the liquid and gas, which then enter the engine through the first intake passage, the second intake passage, the third intake passage, and the second liquid inlet passage, respectively, increasing the temperature of the engine cylinder liners and achieving rapid engine preheating. When the temperature at the engine coolant outlet reaches the target threshold, the heating device stops heating, and the cooling device on the first liquid inlet passage cools the coolant, completing the preheating during the cold start phase. Furthermore, the control method of this invention can open or close the intake passages or the liquid inlet passage according to different engine operating conditions, thereby achieving rapid engine warm-up.

[0032] Furthermore, the present invention provides a vehicle equipped with the vehicle engine system described above. By equipping the vehicle with the vehicle engine system described above, the vehicle of the present invention can reduce engine dry friction, thereby reducing engine wear and increasing engine lifespan. Attached Figure Description

[0033] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are for explaining the invention. The directional terms used, such as front / back, up / down, etc., are only used to indicate relative positional relationships and do not constitute an improper limitation of the invention. In the drawings:

[0034] Figure 1 This is a schematic diagram of the overall structure of the heating device described in Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram of the heating device described in Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the heating device described in Embodiment 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of the power supply section of the heating device according to Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of the vehicle engine system described in Embodiment 2 of the present invention;

[0039] Figure 6 This is a schematic diagram of the first air intake channel according to Embodiment 2 of the present invention;

[0040] Figure 7 This is a schematic diagram of the second air intake channel according to Embodiment 2 of the present invention;

[0041] Figure 8 This is a schematic diagram of the third air intake channel according to Embodiment 2 of the present invention;

[0042] Figure 9 This is a schematic diagram of the first liquid inlet channel according to Embodiment 2 of the present invention;

[0043] Figure 10 This is a schematic diagram of the second liquid inlet channel described in Embodiment 2 of the present invention;

[0044] Figure 11 This is a flowchart illustrating the method described in Embodiment 3 of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Air filter; 2. Engine; 3. Catalytic converter; 4. Muffler; 51. Power supply; 52. Electromagnetic switch; 53. Converter; 54. Inverter; 55. Heating device; 551. Gas delivery pipe; 552. Liquid receiver; 553. Heat sink; 554. Electromagnetic coil; 555. Insulating layer; 556. Electromagnetic shield; 61. First electromagnetic valve; 62. Second electromagnetic valve; 63. Third electromagnetic valve; 64. Fourth electromagnetic valve; 71. Water pump; 72. Fifth electromagnetic valve; 73. Temperature control valve; 74. Heat dissipation device; 8. Controller. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0048] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0050] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] Example 1

[0052] This embodiment relates to a heating device. In terms of overall structure, the heating device 55 includes a liquid reservoir 552 with an internal cavity. The liquid reservoir 552 is provided with an inlet and an outlet that communicate with the cavity. A gas delivery pipe 551 is sleeved on the outside of the liquid reservoir 552. An air passage is formed between the outer surface of the gas delivery pipe 551 and the liquid reservoir 552. An air inlet and an air outlet that communicate with the air passage are formed on the gas delivery pipe 551. A heating element acts on the gas delivery pipe 551 and heats the airflow flowing through the air passage when energized.

[0053] As shown in the above structure, the heating unit can heat the airflow passing through the air passage, and the increased temperature of the airflow can transfer heat to the liquid inside the liquid reservoir 522, thereby achieving common preheating of the gas and liquid.

[0054] Based on the overall design described above, an exemplary structure of the heating device in this embodiment is as follows: Figure 1 and Figure 2 As shown, it should be noted that the heating device in this embodiment can be applied to engine 2. Of course, the heating device can also be applied to other components or equipment that need to heat gas or liquid.

[0055] If the heating device 55 is applied to the engine 2, then the liquid in the aforementioned reservoir 552 can be coolant. Specifically, gas enters through the air inlet of the air passage, is heated, and then flows out through the air outlet into the engine 2, allowing the engine 2 to quickly reach warm-up conditions. The heated liquid in the reservoir 552 and the gas in the air passage enter the engine 2, increasing the temperature of the engine 2 and shortening the engine 2 preheating time, thereby achieving rapid preheating of the engine 2.

[0056] Specifically, the air inlet and outlet of the air passage are distributed on both radial sides of the liquid reservoir 552 and positioned at both axial ends, as shown in the figure. Figure 2 The diagram shows the schematic locations of the AB airway. That is, point A is the airway inlet, and point B is the airway outlet. Of course, point A can also be the outlet, and point B the inlet. Additionally, Figure 2 The CD shown is the liquid passage for the coolant.

[0057] Furthermore, a heat sink 553 located within the gas passage is provided on the outer surface of the liquid reservoir 552. Specifically, in this embodiment, multiple heat sinks 553 are arranged in parallel at intervals on the outer surface of the liquid reservoir 552, and there is a gap between the end of the heat sink 553 away from the liquid reservoir 552 and the inner wall of the gas delivery pipe 551. The gap between the heat sink 553 and the gas delivery pipe 551 forms the aforementioned AB gas passage. It is worth mentioning that the heating unit heats the gas within the gas passage. At this time, the temperature of the gas can be conducted to the coolant through the heat sink 553 to heat the coolant. In addition, the heat energy can also be conducted from the coolant to the gas to cool the coolant.

[0058] Reference Figure 3 In this embodiment, the heating element is specifically an electromagnetic coil 554 wound around the gas delivery pipe 551, with the electromagnetic coil 554 evenly wound around the outside of the gas delivery pipe 551. Furthermore, in conjunction with... Figure 4 The power supply unit that supplies electricity to the heating unit includes a power supply 51, an electromagnetic switch 52 that controls the power supply unit to turn on, a converter 53 connected to the electromagnetic switch 52, and an inverter 54 connected between the converter 53 and the heating unit.

[0059] Specifically, the power supply 51, electromagnetic switch 52, converter 53, and inverter 54 are all existing components of the vehicle. The power supply 51 serves as the power source, providing power for the induction heating of the electromagnetic coil 554. The electromagnetic switch 52 is used to determine whether the electromagnetic coil 554 is turned on. The converter 53 is connected to the positive and negative terminals of the electromagnetic coil 554 respectively. The converter 53 is used to transform the voltage of the power supply 51 and determine whether to boost or buck the voltage according to the actual operating conditions. The inverter 54 is used to convert DC power into AC power to generate an electromagnetic field for heating the coolant and gas.

[0060] Therefore, it can be understood that when the electromagnetic switch 52 is turned on, the electromagnetic coil 554 starts to work. The electromagnetic coil 554 can use alternating current to generate a magnetic field, and use the electromagnetic induction heat generated in the magnetic field to heat the coolant in the reservoir 552 and the gas in the air passage.

[0061] In a preferred embodiment of this invention, an electromagnetic shielding cover 556 is provided outside the heating unit to shield the electromagnetic field and prevent it from affecting other components of the vehicle. Furthermore, an insulating and heat-insulating layer 555 is provided inside the heating device 55, surrounding the gas delivery pipe 551. The insulating and heat-insulating layer 555 can trap the heat generated by electromagnetic induction inside the gas delivery pipe 551 to reduce heat loss. The insulating and heat-insulating layer 555 can be made of ceramic fiber, glass fiber felt, or the like.

[0062] The heating device in this embodiment is applied to the engine 2. It can heat the gas in the air passage by means of electromagnetic induction. At the same time, the heat sink 553 conducts the heat in the air passage to the liquid in the liquid reservoir 552, so as to achieve the common preheating of liquid and gas, thereby increasing the temperature of the engine 2 and shortening the preheating time of the engine 2.

[0063] Example 2

[0064] The present invention relates to a vehicle engine system, including an engine 2, a catalytic converter 3 connected to the intake port of the engine 2 via a controllable first intake channel, a pumping device disposed at the coolant inlet of the engine 2, a temperature control valve 73 and a heat dissipation device 74 sequentially connected at the coolant outlet of the engine 2, and a heating device 55 connected upstream of the intake port and the coolant inlet of the engine 2.

[0065] In addition, the air inlet of the heating device 55 is controllably connected to the air filter 1, and the air outlet is connected to a controllably connected second air intake channel, which is connected to the air intake port of the engine 2. Furthermore, a controllably connected third air intake channel is connected in parallel to the air outlet of the heating device 55, and the third air intake channel is connected to the air intake end of the catalytic converter 3.

[0066] The outlet of the heating device 55 is connected to the inlet of the pumping device, and a first inlet channel is connected to the outlet of the cooling device 74. Additionally, a second inlet channel is connected in parallel to the inlet, and this second inlet channel is controllably connected to the coolant outlet of the engine 2. By using different air intake and coolant channels, different air and coolant paths can be selected according to the different operating conditions of the engine 2.

[0067] In addition, a muffler 4 is sequentially connected to one end of the catalytic converter 3. The catalytic converter 3 is an external purification device installed in the vehicle's exhaust system, which can convert harmful gases in the vehicle's exhaust into non-toxic and harmless emissions. The muffler 4 uses the principle of sound wave superposition and interference to eliminate aerodynamic noise and suppress dynamic noise.

[0068] Specifically, combined Figure 5 and Figure 6 As shown, it is worth mentioning that the pumping device in this embodiment is a water pump 71, and the engine 2, water pump 71, air filter 1, temperature control valve 73, catalytic converter 3 and cooling device 74 are all existing vehicle parts.

[0069] It should be noted that a first solenoid valve 61 is provided in the passage from the air filter 1 to the heating device 55, a second solenoid valve 62 is provided in the passage from the air filter 1 to the engine 2, a third solenoid valve 63 is provided in the passage from the heating device 55 to the engine 2, and a fourth solenoid valve 64 is provided in the passage from the heating device 55 to the catalytic converter 3.

[0070] Reference Figure 6 Specifically, the first intake passage allows air discharged from the air filter 1 to enter the engine 2 through the second solenoid valve 62, then pass through the catalytic converter 3, and finally reach the muffler 4. It is known that the first intake passage does not pass through the heating device 55, so when the engine 2 is under normal operating conditions, the air entering through the air filter 1 enters the engine 2 through the first intake passage to participate in combustion.

[0071] In other words, when the engine 2 is in normal operating condition, the heating device 55, the first solenoid valve 61, the third solenoid valve 63, and the fourth solenoid valve 64 are all in the closed state.

[0072] In addition, refer to Figure 7 As shown, the second air intake passage is where the air discharged from the air filter 1 enters the heating device 55 through the first solenoid valve 61 for heating. Then the air is discharged from the heating device 55 and enters the engine 2 through the third solenoid valve 63, and finally passes through the catalytic converter 3 to reach the muffler 4.

[0073] Combination Figure 8 The third air intake channel is where the air discharged from the air filter 1 enters the heating device 55 through the first solenoid valve 61 for heating. Then the air is discharged from the heating device 55 and passes through the fourth solenoid valve 64 to the catalytic converter 3 and the muffler 4 in sequence.

[0074] When the intake air temperature is low, that is, when the engine 2 is in cold start condition, the first intake passage, the second intake passage and the third intake passage are all open. In other words, at this time, the first solenoid valve 61, the second solenoid valve 62, the third solenoid valve 63, the fourth solenoid valve 64 and the heating device 55 are all in the open state, and air flows out from the first intake passage, the second intake passage and the third intake passage respectively.

[0075] Based on the aforementioned airflow arrangement, the air in the second intake passage is heated by the heating device 55 before entering the engine 2 to regulate the engine 2's temperature and prevent knocking caused by low-temperature air entering the engine 2. Additionally, a portion of the gas discharged from the air filter 1 enters the third intake passage. The air in the third intake passage is heated by the heating device 55 before entering the catalytic converter 3 to heat the catalyst within the catalytic converter 3, allowing it to reach the catalytic reaction temperature as quickly as possible. This controls the reaction temperature, and the continuous flow of gas provides sufficient oxygen for the oxidation-reduction reaction, reducing harmful gas emissions and preventing excessive emissions during cold starts.

[0076] In addition, it is also necessary to combine Figure 9 It should be noted that a fifth solenoid valve 72 is provided in the passage between the engine 2 and the heating device 55 in the aforementioned first liquid inlet channel. Specifically, the coolant in the heating device 55 flows into the engine 2 through the water pump 71, and then the coolant flows back to the heating device 55 through the fifth solenoid valve 72 to complete the circulation.

[0077] And reference Figure 10 The second inlet channel is where the coolant in the heating device 55 flows through the water pump 71 into the engine 2. Then, part of the coolant passes through the temperature control valve 73 into the heat dissipation device 74 for cooling, and finally flows back into the heating device 55 to complete the cycle.

[0078] It is worth mentioning that the water pump 71 is used to deliver the coolant in the heating device 55 to the cylinder liner of engine 2, thereby increasing the temperature of the engine 2 wall and the lubricant. In addition, the temperature control valve 73 is used to determine whether the cylinder liner of engine 2 has reached the target threshold, so as to determine whether the cold start warm-up process has been completed.

[0079] Specifically, combined Figure 5 As shown, the first inlet channel is used for the cold start stage of engine 2. The coolant is heated by the heating device 55. The continuously heated coolant continuously provides a heat source for engine 2 to continuously heat the cylinder liner of engine 2. The low temperature energy of engine 2 cylinder liner and coolant circulate to the heating device 55 to circulate and heat the coolant that flows back to the heating device 55, thereby shortening the preheating time of engine 2 cylinder liner, enabling engine 2 to reach the appropriate temperature as soon as possible, achieving rapid warm-up, and avoiding excessive levels of harmful gases during the cold start stage.

[0080] In addition, the second inlet channel is used when the engine cylinder liner temperature has reached the preset temperature during the cold start phase, that is, the cold start warm-up process has been completed. At this time, the temperature control valve 73 is opened, and the cooling device 74 is used to cool the coolant circulating here. At the same time, the electromagnetic switch 52 is turned off to complete the preheating of the cold start phase.

[0081] In this embodiment of the vehicle engine system, the engine 2 can heat the gas and coolant entering the engine 2 through different liquid and gas passages for the cold start stage or normal start-up conditions. The heat is redistributed at the junction of the gas and liquid passages. The heat transfer path is identified by the difference in engine 2 operating conditions, so as to achieve rapid preheating of the engine 2 and reduce the emission of harmful gases during the cold start stage of the engine 2.

[0082] Example 3

[0083] This embodiment relates to a control method for a vehicle engine system. The control method is based on the vehicle engine system described in Embodiment 2 and includes the following steps:

[0084] S1. Start engine 2;

[0085] S2. Control the heating device 55 to start heating;

[0086] S3: Control the opening of the first air intake channel, the second air intake channel, and the third air intake channel; simultaneously control the opening of the first liquid inlet channel;

[0087] S4. When the temperature of the coolant outlet of engine 2 reaches the target threshold, control the heating device 55 to stop heating, close the second air intake passage, the third air intake passage and the first liquid inlet passage, and control the second liquid inlet passage to open.

[0088] It is understandable that after engine 2 starts, based on the description of the first intake passage, second intake passage, third intake passage, first liquid inlet passage, and second liquid inlet passage in the vehicle engine system of Embodiment 2, it is known that after engine 2 starts, power supply 51 is turned on to supply power to the heating unit. That is, after heating device 55 is activated, the first intake passage, second intake passage, and third intake passage are simultaneously connected, and the first liquid inlet passage is also connected. The coolant and gas are preheated by heating device 55 to preheat engine 2.

[0089] When the temperature of the coolant in engine 2 is detected by temperature control valve 73 to have reached the target threshold, heating device 55 stops heating. At this time, only the first air intake channel and the second liquid intake channel are in the conducting state. The second liquid intake channel cools the coolant, thereby completing the preheating of engine 2 in the cold start stage.

[0090] Specifically, the aforementioned vehicle engine system is controlled by controller 8. That is to say, the opening and closing of the first intake passage, the second intake passage, the third intake passage, the first liquid intake passage, and the second liquid intake passage are all controlled by controller 8, specifically by controller 8 controlling the opening and closing of electromagnetic switch 52, first electromagnetic valve 61, second electromagnetic valve 62, third electromagnetic valve 63, fourth electromagnetic valve 64, and fifth electromagnetic valve 72.

[0091] Example 4

[0092] This invention relates to a vehicle equipped with a vehicle engine system as described in Embodiment 2. By equipping the vehicle with the vehicle engine system described in Embodiment 2, the vehicle of this invention can reduce dry friction in the engine 2, thereby reducing wear on the engine 2 and increasing its service life.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle engine system comprising an engine (2), an air filter (1) connected to the intake port of the engine (2) via a controllable first intake passage, a catalytic converter (3) connected to the outlet port of the engine (2), a pumping device disposed at the coolant inlet of the engine (2), and a temperature control valve (73) and a cooling device (74) sequentially connected at the coolant outlet of the engine (2), characterized in that: A heating device (55) is connected upstream of the air intake port and coolant inlet of the engine (2); The air inlet of the heating device (55) is controllably connected to the air filter (1), and the air outlet is connected to a controllably connected second air inlet channel, which is connected to the air inlet port of the engine (2). The outlet of the heating device (55) is connected to the inlet of the pumping device, and a first inlet channel is provided on the inlet. The first inlet channel is connected to the outlet of the heat dissipation device (74). The heating device (55) includes: The liquid reservoir (552) has an internal cavity, and the liquid reservoir (552) is provided with an inlet and an outlet that communicate with the cavity; A gas delivery pipe (551) is sleeved on the outside of the liquid reservoir (552); an air passage is formed between the outer surfaces of the gas delivery pipe (551) and the liquid reservoir (552), and an air inlet and an air outlet communicating with the air passage are formed on the gas delivery pipe (551). A heating element acts on the gas delivery pipe (551), and the heating element heats the gas flow passing through the gas passage when energized; The first air intake passage is through which the air discharged from the air filter (1) enters the engine (2) through the second solenoid valve (62) and then passes through the catalyst (3). The first inlet channel is through which the coolant from the heating device (55) flows into the engine (2) via the pumping device, and then the coolant flows back to the heating device (55) via the fifth solenoid valve (72).

2. The vehicle engine system according to claim 1, characterized in that: The heating element is an electromagnetic coil (554) wound around the gas delivery pipe (551).

3. The vehicle engine system according to claim 2, characterized in that: The power supply unit that constitutes the power supply of the heating unit includes a power source (51), an electromagnetic switch (52) that controls the power supply unit to turn on, a converter (53) connected to the electromagnetic switch (52), and an inverter (54) connected between the converter (53) and the heating unit.

4. The vehicle engine system according to claim 2, characterized in that: An electromagnetic shielding cover (556) is fitted over the outside of the heating part.

5. The vehicle engine system according to claim 1, characterized in that: On the outer surface of the liquid reservoir (552), a heat sink (553) is provided located inside the air passage.

6. The vehicle engine system according to claim 1, characterized in that: An insulating and heat-insulating layer (555) is provided inside the heating device (55) and sleeved on the outside of the gas delivery pipe (551).

7. The vehicle engine system according to claim 1, characterized in that: A controllable third air intake channel is connected in parallel to the air outlet, and the third air intake channel is connected to the air intake end of the catalyst (3).

8. The vehicle engine system according to claim 7, characterized in that: A second inlet channel is connected in parallel to the inlet, and the second inlet channel is controllably connected to the coolant outlet of the engine (2). The second inlet channel is where the coolant in the heating device (55) flows through the pumping device into the engine (2), and then part of the coolant passes through the temperature control valve (73) into the heat dissipation device (74) and then flows back to the heating device (55).

9. A control method for a vehicle engine system, characterized in that, The control method is based on the vehicle engine system of claim 8 and includes the following steps: Start the engine (2); Control the heating device (55) to start heating; Control the opening of the first air intake channel, the second air intake channel, and the third air intake channel; simultaneously control the opening of the first liquid inlet channel; When the temperature of the coolant outlet of the engine (2) reaches the target threshold, the heating device (55) is controlled to stop heating, while the second air intake channel, the third air intake channel and the first liquid inlet channel are closed, and the second liquid inlet channel is controlled to open.

10. The control method for a vehicle engine system according to claim 9, characterized in that: The vehicle engine system is controlled by a controller (8).

11. A vehicle, characterized in that... The vehicle is equipped with the vehicle engine system as described in claim 8.

Images