Vehicle supercharging system and supercharging method

Abstract

The present application relates to a vehicle supercharging system and supercharging method, which includes: a turbine housing; a turbine casing, the turbine casing being sleeved around the outer periphery of the turbine housing, with the inner sidewall of the turbine casing and the outer sidewall of the turbine casing together forming a turbine insulation chamber; a first air conditioning branch, the first air conditioning branch being connected to the turbine insulation chamber, and the first air conditioning branch being used to connect to an air conditioning main circuit, the first air conditioning branch being provided with a first on-off valve, the first on-off valve signal being connected to a controller, the controller being used to control the opening or closing of the first on-off valve. By sleeved around the outer periphery of the turbine housing to form a turbine insulation chamber, when the first on-off valve is opened, gas from the air conditioning main circuit can enter the turbine insulation chamber through the first air conditioning branch, thereby solving the technical problem in the related art that when a vehicle is in an extremely cold environment, the low temperature may affect the expansion rate of the exhaust gas, thereby resulting in insufficient supercharging capacity.

Description

Technical Field

[0001] The present application relates to the field of engines, and in particular to a vehicle supercharging system and a supercharging method. Background Art

[0002] The vehicle supercharging system is a system that uses the engine's running kinetic energy to improve the engine's intake capacity. Currently, some vehicles use a mechanical supercharging system to use the rotational kinetic energy of the crankshaft to drive the turbine in the exhaust pipe to rotate, thereby driving the impeller in the intake pipe to rotate. Some vehicles use the exhaust gas supercharging system to use the kinetic energy of the vehicle's exhaust to drive the turbine to rotate, thereby driving the impeller to rotate, thereby meeting the engine's intake needs.

[0003] In related technologies, considering that the high temperature of the gas released during turbocharging will reduce the efficiency of the engine, an intercooler is installed between the supercharger and the engine to reduce the temperature of the high-temperature air after turbocharging. However, at this time, only the possible impact of the high temperature of the gas after turbocharging on the engine is considered. When the vehicle is in an extremely cold environment, the low temperature may affect the expansion rate of the exhaust gas, thereby resulting in insufficient supercharging capacity. Summary of the Invention

[0004] The present application provides a vehicle supercharging system and supercharging method, which can solve the technical problem in the related art that when the vehicle is in an extremely cold environment, the temperature is too low, which may affect the expansion rate of the exhaust gas, thereby resulting in insufficient supercharging capacity.

[0005] In a first aspect, an embodiment of the present application provides a vehicle supercharging system, comprising: a turbine housing; a turbine casing, wherein the turbine casing is sleeved on the outer periphery of the turbine housing, and the inner side wall of the turbine casing and the outer side wall of the turbine housing together form a turbine insulation chamber; a first air-conditioning branch, wherein the first air-conditioning branch is connected to the turbine insulation chamber, and the first air-conditioning branch is used to be connected to the air-conditioning main circuit, the first air-conditioning branch is provided with a first opening and closing valve, and the first opening and closing valve signal is connected to a controller, and the controller is used to control the first opening and closing valve to open or close.

[0006] In combination with the first aspect, in one embodiment, the vehicle boost system further includes a second air-conditioning branch, the second air-conditioning branch is spaced apart from the first air-conditioning branch, and the second air-conditioning branch is connected to the turbine insulation chamber, and the second air-conditioning branch is also used to connect to the air-conditioning compressor.

[0007] In combination with the first aspect, in one embodiment, the second air-conditioning branch is provided with a second on-off valve, the second on-off valve signal is connected to the controller, and the controller is used to control the second on-off valve to open or close.

[0008] In combination with the first aspect, in one embodiment, the turbine casing is equipped with a vent valve, the vent valve is connected to the controller signal, and the controller is used to control the vent valve to open or close.

[0009] In combination with the first aspect, in one embodiment, the vehicle boost system further includes a temperature sensor, which is used to be fixed at the throttle valve, and the temperature sensor signal is connected to the controller, and the controller is used to control the first opening and closing valve to open or close according to the temperature signal obtained by the temperature sensor.

[0010] In a second aspect, an embodiment of the present application provides a supercharging method using the above-mentioned vehicle supercharging system, which includes the following steps: determining whether the engine operating data and the ambient temperature are abnormal; if the operating data are abnormal and the ambient temperature is abnormal, turning on the air conditioning and heating, and controlling the first opening and closing valve to open, so that the air conditioning and heating enter the turbine insulation chamber through the first air conditioning branch; otherwise, controlling the first opening and closing valve or the air conditioning and heating to close.

[0011] In combination with the second aspect, in one embodiment, the determination of whether the engine operating data and the ambient temperature are abnormal includes: obtaining the ambient temperature through a temperature sensor arranged near the throttle valve, and determining whether the ambient temperature is lower than a preset temperature, if the ambient temperature is lower than the preset temperature, it is abnormal; and obtaining the engine speed data, and determining whether the speed is higher than a preset value, if the speed is higher than the preset value, it is abnormal.

[0012] In combination with the second aspect, in one embodiment, the control of the first opening and closing valve to open allows the air-conditioning warm air to enter the turbine insulation chamber through the first air-conditioning branch, and also includes: controlling the second opening and closing valve in the second air-conditioning branch connected to the turbine insulation chamber to open, so that the warm air entering the turbine insulation chamber through the first air-conditioning branch enters the second air-conditioning branch, and the warm air enters the air-conditioning compressor connected to the second air-conditioning branch.

[0013] In combination with the second aspect, in one embodiment, the control of the first opening and closing valve or the air conditioning and heating to be closed includes: if the air conditioning and heating are in the on state, controlling the first opening and closing valve to be closed; if the air conditioning and heating are in the off state, controlling both the first opening and closing valve and the second opening and closing valve to be opened, and turning on the air pump so that the gas from the air pump enters the second air conditioning branch from the first air conditioning branch through the turbine insulation chamber.

[0014] In combination with the second aspect, in one embodiment, after controlling the first opening and closing valve to close, the method further includes: controlling the ventilation valve installed on the turbine casing to open.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0016] By arranging a turbine sleeve body on the periphery of the turbine housing, a turbine insulation chamber is formed. When the first opening and closing valve is opened, the gas in the air-conditioning main circuit can enter the turbine insulation chamber through the first air-conditioning branch circuit. When the vehicle is in an extremely cold environment and the engine is under high load, the air-conditioning heating can be transmitted to the turbine insulation chamber through the air-conditioning main circuit to insulate the exhaust gas in the turbine housing, effectively reducing the possibility of insufficient driving ability of the turbine due to insufficient expansion rate of the exhaust gas due to rapid cooling in an extremely low temperature environment, and solving the technical problem in the related technology that when the vehicle is in an extremely cold environment, the temperature is too low and may affect the expansion rate of the exhaust, thereby resulting in insufficient boosting capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic structural diagram of a vehicle boosting system provided in an embodiment of the present application;

[0019] Figure 2 A flow chart of a vehicle supercharging method provided in an embodiment of the present application.

[0020] In the picture:

[0021] 1. Turbine casing; 2. Turbine sleeve; 3. Turbine insulation chamber; 4. First air-conditioning branch; 5. Second air-conditioning branch; 6. Air-conditioning compressor; 7. Air-conditioning main circuit. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] An embodiment of the present application provides a vehicle supercharging system that can solve the technical problem in related technologies that when a vehicle is in an extremely cold environment, the temperature is too low, which may affect the expansion rate of the exhaust gas, thereby resulting in insufficient supercharging capacity.

[0024] See also Figure 1As shown, a vehicle supercharging system provided in an embodiment of the present application may include: a turbine housing 1; a turbine sleeve 2, wherein the turbine sleeve 2 is sleeved on the outer periphery of the turbine housing 1, and the inner wall of the turbine sleeve 2 and the outer wall of the turbine housing 1 together form a turbine insulation chamber 3, and the turbine sleeve 2 may be made of the same material as the turbine housing 1; a first air-conditioning branch 4, wherein the first air-conditioning branch 4 is connected to the turbine insulation chamber 3, and the first air-conditioning branch 4 is used to be connected to the air-conditioning main road 7, the first air-conditioning branch 4 is provided with a first opening and closing valve, and the first opening and closing valve signal is connected to a controller, and the controller is used to control the opening or closing of the first opening and closing valve. By controlling the opening or closing of the first opening and closing valve, the connection between the first air-conditioning branch 4 and the air-conditioning main road 7 can be controlled.

[0025] In the embodiment of the present application, a turbine casing 2 is sleeved on the outer periphery of the turbine casing 1 to form a turbine heat preservation chamber 3. The turbine casing 2 can be directly fixed to the turbine casing 1, that is, the outer wall of the turbine casing 1 and the inner wall of the turbine casing 2 are connected by a connector. In some other embodiments, the turbine casing 2 can also be fixed to the chassis of the vehicle. In this case, there is no direct connection between the turbine casing 2 and the turbine casing 1. Instead, the turbine casing 2 is fixed to the vehicle chassis so that the turbine casing 2 is surrounded by the outer periphery of the turbine casing 1. In the embodiment of the present application, when the controller controls the first opening and closing valve to open, The gas in the air-conditioning main line 7 can enter the turbine insulation chamber 3 through the first air-conditioning branch line 4. When the vehicle is in an extremely cold environment and the engine is under high load, the first opening and closing valve can be opened to transmit the air-conditioning warm air to the turbine insulation chamber 3 through the air-conditioning main line 7 to insulate the exhaust gas in the turbine housing 1, effectively reducing the possibility of insufficient driving ability of the turbine due to insufficient expansion rate caused by rapid cooling of the exhaust gas in an extremely low temperature environment, and solving the technical problem that the related technology only considers the possible impact of excessively high gas temperature after supercharging on the engine and cannot fully meet the vehicle's use environment.

[0026] In some optional embodiments, the vehicle supercharging system further includes a second air conditioning branch 5, which is spaced apart from the first air conditioning branch 4 and communicates with the turbine insulation chamber 3. The second air conditioning branch 5 is also used to communicate with the air conditioning compressor 6. The provision of the second air conditioning branch 5 can reduce some energy consumption. Specifically, when the air conditioning heater is turned on and the warm air enters the turbine insulation chamber 3 through the first air conditioning branch 4 to insulate or heat the turbine housing 1, the warm air continues to act on the air conditioning compressor 6 through the second air conditioning branch 5, thereby maximizing resource utilization and reducing waste of air conditioning gas pressure. Furthermore, the provision of the second air conditioning branch 5 can reduce the performance requirements of the air conditioning compressor 6 during manufacturing, thereby reducing the manufacturing cost of the vehicle.

[0027] In some optional embodiments, the second air-conditioning branch 5 is provided with a second opening and closing valve, and the second opening and closing valve signal is connected to the controller. The controller is used to control the opening or closing of the second opening and closing valve, that is, the second air-conditioning branch 5 can also be provided with a second opening and closing valve for controlling the opening or closing of the second air-conditioning branch 5. During vehicle driving, the driver can control the opening or closing of the second opening and closing valve through the controller according to actual needs. Specifically, when the ambient temperature is extremely low and the exhaust gas expansion rate in the turbine casing 1 is far from meeting the requirements, the second opening and closing valve can be closed to allow warm air to continuously enter the turbine insulation chamber 3, thereby enhancing the insulation effect of the gas in the turbine insulation chamber 3 on the turbine casing 1.

[0028] In some optional embodiments, the turbine casing 2 is equipped with a vent valve, which is connected to the controller by signal. The controller is used to control the opening or closing of the vent valve. By setting the vent valve, when the controller controls the vent valve to open, the turbine insulation chamber 3 can be connected to the external environment. When the vehicle is driving in a suitable environment, ventilation through the vent valve can achieve a cooling effect on the turbine casing 1 and reduce the temperature of the exhaust gas in the turbine casing 1 to a certain extent. In some other embodiments, the need to cool the turbine casing 1 and the exhaust gas therein can be adopted in a form.

[0029] In some optional embodiments, the vehicle supercharging system also includes a temperature sensor, which is used to be fixed at the throttle valve, and the temperature sensor signal is connected to the controller. The controller is used to control the opening or closing of the first opening and closing valve according to the temperature signal obtained by the temperature sensor. The throttle valve serves as a controllable valve for controlling the air entering the engine. In the embodiment of the present application, the temperature sensor is fixed at the throttle valve close to the engine to monitor the air temperature entering the engine in real time. Specifically, the air enters the intake pipe from the throttle valve. The air temperature obtained here is less affected by the engine combustion, so the ambient temperature can be obtained more accurately. In order to facilitate the precise control of the fuel injection and ignition process during vehicle driving, a temperature sensor is usually set at the throttle valve to measure the temperature entering the throttle valve. In the embodiment of the present application, the temperature signal obtained by the temperature sensor installed at the throttle valve is used to control the opening or closing of the first opening and closing valve, which can save material usage and save production costs.

[0030] See also Figure 2 As shown, the embodiment of the present application further provides a supercharging method using the vehicle supercharging system as described above, which may include the following steps:

[0031] S1: Determine whether the engine's operating data and ambient temperature are abnormal. The engine's operating data and ambient temperature can be input into the ECU controller, and the abnormal situation can be determined in the ECU controller.

[0032] S2: If the operating data and the ambient temperature are abnormal, the air conditioning and heating are turned on, and the first on-off valve is controlled to open, allowing the air conditioning and heating air to enter the turbine insulation chamber 3 through the first air conditioning branch 4. In other words, when the ECU controller determines that both the engine operating data and the ambient temperature are abnormal, it controls the first on-off valve to open. It should be understood that the aforementioned controllers may all refer to the ECU controller.

[0033] S3: Otherwise, the first on-off valve or the air conditioner and heater are controlled to be turned off. It should be understood that when the ECU controller determines that the engine operating data is not in a set abnormal condition, the ambient temperature is not in a set abnormal condition, or both the engine operating data and the ambient temperature are not in an abnormal condition, the first on-off valve may be controlled to be closed. In addition, when it is detected that the engine operating data or the ambient temperature are not in an abnormal condition, but the air conditioner and heater are not turned on, the first on-off valve may also be controlled to be closed.

[0034] In some optional embodiments, the determination of whether the engine's operating data and ambient temperature are abnormal may include: obtaining the ambient temperature through a temperature sensor disposed near the throttle valve, and determining whether the ambient temperature is lower than a preset temperature; if the ambient temperature is lower than the preset temperature, it is abnormal. In the embodiment of the present application, the preset temperature may be set to -20°C, that is, when the ambient temperature obtained by the temperature sensor is lower than -20°C, the ambient temperature is determined to be abnormal; and obtaining the engine's speed data, and determining whether the speed is higher than a preset value; if the speed is higher than the preset value, it is abnormal. It should be understood that the abnormality at this time does not refer to engine damage or other abnormal conditions, but refers to the engine's speed data being higher than a set preset value interval. By determining whether the speed data is higher than the preset interval, the first opening and closing valve is controlled to open or close.

[0035] In some optional embodiments, the control of opening the first on-off valve to allow the air conditioning and heating air to enter the turbine heat preservation chamber 3 through the first air conditioning branch 4 may further include: controlling the second on-off valve in the second air conditioning branch 5 connected to the turbine heat preservation chamber 3 to open, so that the heating air entering the turbine heat preservation chamber 3 through the first air conditioning branch 4 enters the second air conditioning branch 5, and the heating air enters the air conditioning compressor 6 connected to the second air conditioning branch 5. That is, the first on-off valve and the second on-off valve can be synchronously driven to open and close by the controller, thereby reducing the number of operation steps. It should be understood that under normal circumstances, before the ambient temperature is detected to be lower than the preset temperature, the driver has already turned on the air conditioning and heating for driving and riding comfort. Therefore, when the controller determines that the engine operating data and the ambient temperature are both abnormal and controls the first on-off valve and the second on-off valve to open, the air conditioning and heating are already in the on state, and some heating air can directly enter the turbine heat preservation chamber 3 through the first air conditioning branch 4. In some other embodiments, the first on-off valve and the second on-off valve may also be opened or closed by the controller, respectively, so that the first on-off valve and the second on-off valve may be opened or closed, respectively, in different ambient temperatures and vehicle operating conditions.

[0036] In some optional embodiments, the control of the first on-off valve or the air conditioning and heating to be turned off may include: if the air conditioning and heating are in the on state, the first on-off valve is controlled to be closed, that is, when it is determined that the operating data of the engine is not in the set abnormal condition, or the ambient temperature is not in the set abnormal condition, and the air conditioning and heating are in the on state, the first on-off valve can be closed to prevent the heating air from entering the turbine insulation chamber 3 from the first air-conditioning branch 4. At this time, the second on-off valve can be in the closed state or in the open state; if the air conditioning and heating are in the off state, the first on-off valve and the second on-off valve are controlled to be opened, and the air pump is turned on to allow the gas from the air pump to pass through the turbine insulation chamber from the first air-conditioning branch 4. 3 enters the second air conditioning branch 5. It should be understood that the air conditioning main line and the air pump line can be the same line. That is, when the air conditioning heater is turned off, no heat can be transmitted in the air conditioning main line 7. At this time, opening both the first on-off valve and the second on-off valve connects the first air conditioning branch 4, the turbine insulation chamber 3, and the second air conditioning branch 5. At this time, turning on the vehicle's air pump allows air from the air pump to enter the turbine insulation chamber 3 from the first air conditioning branch 4, allowing air to circulate around the periphery of the turbine housing 1, achieving a certain cooling effect. After passing through the turbine housing 1, the air temperature may rise to a certain extent. The elevated temperature can then be blown to the air conditioning compressor 6 through the second air conditioning branch 5. In some other embodiments, if the turbine housing 1 is provided with a vent valve, the second on-off valve can also be closed and the vent valve opened to allow the air to flow to the outside.

[0037] In some optional embodiments, after controlling the closing of the first opening and closing valve, it may also include: controlling the opening of the vent valve installed on the turbine casing 2, that is, when it is determined that the engine operating data is not in the set abnormal condition, or the ambient temperature is not in the set abnormal condition, and the air conditioning and heating are turned on, the first opening and closing valve is in a closed state, effectively preventing heating from entering the turbine insulation chamber 3 from the first air conditioning branch 4. At this time, the vent valve can be opened to enable gas flow in the turbine insulation chamber 3 and the outside world, which has a certain cooling effect on the turbine casing 1. At this time, the second opening and closing valve can be closed or open.

[0038] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0040] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A vehicle boosting system, characterized in that: It includes: turbine housing (1); A turbine casing (2), the turbine casing (2) being sleeved on the outer periphery of the turbine housing (1), and the inner side wall of the turbine casing (2) and the outer side wall of the turbine housing (1) jointly forming a turbine heat preservation chamber (3); a first air-conditioning branch (4), the first air-conditioning branch (4) being in communication with the turbine heat preservation chamber (3), and the first air-conditioning branch (4) being used to be connected to the air-conditioning main circuit (7), the first air-conditioning branch (4) being provided with a first opening and closing valve, the first opening and closing valve signal being connected to a controller, the controller being used to control the first opening and closing valve to be opened or closed; The vehicle supercharging system further comprises a second air-conditioning branch (5), the second air-conditioning branch (5) being spaced apart from the first air-conditioning branch (4), and the second air-conditioning branch (5) being in communication with the turbine heat preservation chamber (3), and the second air-conditioning branch (5) being further used for communicating with an air-conditioning compressor (6); The air conditioning warm air is transmitted to the turbine heat preservation chamber (3) through the air conditioning main line (7) to keep the exhaust gas in the turbine housing (1) warm.

2. The vehicle boosting system according to claim 1, wherein: The second air-conditioning branch (5) is provided with a second opening and closing valve, the second opening and closing valve signal is connected to the controller, and the controller is used to control the second opening and closing valve to open or close.

3. The vehicle boosting system according to claim 1, wherein: The turbine casing (2) is provided with a vent valve, the vent valve is connected to the controller signal, and the controller is used to control the vent valve to open or close.

4. The vehicle boosting system according to claim 1, wherein: The vehicle supercharging system further includes a temperature sensor, which is fixed to the throttle valve, and the temperature sensor signal is connected to the controller. The controller is used to control the first on-off valve to open or close according to the temperature signal obtained by the temperature sensor.

5. A supercharging method using the vehicle supercharging system according to any one of claims 1 to 4, characterized in that: It includes the following steps: Determine whether the engine's operating data and ambient temperature are abnormal; If the operating data and the ambient temperature are abnormal, the air conditioning and heating are turned on, and the first opening and closing valve is controlled to open, so that the air conditioning and heating enter the turbine heat preservation chamber (3) through the first air conditioning branch (4); Otherwise, the first opening and closing valve or the air conditioner and heater are controlled to be closed.

6. The pressurization method according to claim 5, characterized in that: The determining whether the engine operating data and the ambient temperature are abnormal includes: The ambient temperature is obtained by a temperature sensor installed near the throttle to determine whether the ambient temperature is lower than the preset temperature. If the ambient temperature is lower than the preset temperature, it is abnormal; And obtain the engine speed data to determine whether the speed is higher than the preset value. If the speed is higher than the preset value, it is abnormal.

7. The pressurization method according to claim 5, wherein: The method of controlling the first opening and closing valve to open so that the air-conditioning heating air enters the turbine heat preservation chamber (3) through the first air-conditioning branch (4) further comprises: The second opening and closing valve in the second air-conditioning branch (5) connected to the turbine heat-insulating chamber (3) is controlled to open, so that the warm air entering the turbine heat-insulating chamber (3) through the first air-conditioning branch (4) enters the second air-conditioning branch (5), and the warm air enters the air-conditioning compressor (6) connected to the second air-conditioning branch (5).

8. The pressurization method according to claim 7, wherein: The controlling of the first opening and closing valve or the air conditioner and heater to be closed comprises: If the air conditioner and heater are on, the first opening and closing valve is controlled to close; If the air conditioning and heating system is in the off state, the first on-off valve and the second on-off valve are both controlled to open, and the air pump is turned on, so that the gas from the air pump enters the second air conditioning branch (5) from the first air conditioning branch (4) through the turbine heat preservation chamber (3).

9. The pressurization method according to claim 8, wherein: After controlling the first on-off valve to close, the method further includes: Control the opening of the vent valve installed on the turbine casing (2).

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