An exhaust silencing device, system, vehicle and exhaust silencing method

Abstract

An exhaust silencing device, system, vehicle and exhaust silencing method, the exhaust silencing device comprising an air inlet pipe (1), a main exhaust muffler (2), a main exhaust pipe (3), a multi-way valve (6), at least one auxiliary exhaust muffling device (4) and at least one auxiliary exhaust pipe (5); the multi-way valve (6) is in communication with the air inlet pipe (1), the main exhaust pipe (3) and the auxiliary exhaust pipe (5) respectively; one end of the main exhaust muffler (2) is in communication with the multi-way valve (6) through the main exhaust pipe (3), and the other end is in communication with the outside; one end of the auxiliary exhaust muffling device (4) is in communication with the multi-way valve (6) through the auxiliary exhaust pipe (5), and the other end is in communication with the outside; the exhaust silencing device can reduce the volume of the main exhaust muffler by setting the auxiliary exhaust muffling device (4), has good noise reduction effect, simple structure and is easy to realize.

Description

TECHNICAL FIELD

[0001] The present application relates to the exhaust silencing technology field of the automobile, and in particular to an exhaust silencing device, system, vehicle and exhaust silencing method. BACKGROUND

[0002] In the vehicle design, the exhaust silencing system is generally arranged in the trunk of the vehicle; the exhaust silencing system is used to reduce the exhaust noise of the engine of the vehicle;

[0003] With the increasing requirement of reducing the exhaust noise of the vehicle, it is necessary to continuously increase the volume of the exhaust silencing system to reduce the noise; but with the increase of the volume of the exhaust silencing system, the space arranged in the rear luggage compartment is occupied too much, and the following three problems can be caused:

[0004] 1) The trunk space is reduced, and the arrangement of the vehicle internal components such as the battery and the spare tire is difficult;

[0005] 2) The vehicle ground clearance is low, and the departure angle is reduced;

[0006] 3) The muffler is easily seen from outside the vehicle, which is not beautiful.

[0007] The traditional fuel vehicles on the market all increase the volume of the exhaust silencing system to achieve noise reduction to achieve the noise target. SUMMARY

[0008] In order to solve the above technical problems, the exhaust silencing device disclosed by the present application can reduce the volume of the main exhaust muffler by arranging the auxiliary exhaust silencing device, and has good noise reduction effect, simple structure and easy implementation.

[0009] In order to achieve the above invention purpose, the present application provides an exhaust silencing device, which comprises an intake pipe, a main exhaust muffler, a main exhaust pipe, a multi-way valve, at least one auxiliary exhaust silencing device and at least one auxiliary exhaust pipe;

[0010] The multi-way valve is in communication with the intake pipe, the main exhaust pipe and the auxiliary exhaust pipe respectively;

[0011] One end of the main exhaust muffler is in communication with the multi-way valve through the main exhaust pipe, and the other end is in communication with the outside;

[0012] One end of the auxiliary exhaust silencing device is in communication with the multi-way valve through the auxiliary exhaust pipe, and the other end is in communication with the outside.

[0013] In one embodiment, the multi-way valve comprises a main exhaust interface and at least one auxiliary exhaust interface; the auxiliary exhaust interface is arranged correspondingly with the auxiliary exhaust pipe;

[0014] The multi-way valve is in communication with the main exhaust pipe through the main exhaust interface;

[0015] The multi-way valve is in communication with the auxiliary exhaust pipe through the auxiliary exhaust interface.

[0016] In one embodiment, at least one one-way electromagnetic valve is further included, which is arranged correspondingly with the auxiliary exhaust interface.

[0017] The one-way electromagnetic valve is arranged at the auxiliary exhaust interface in the multi-way valve.

[0018] The one-way electromagnetic valve is used to control the opening or closing of the auxiliary exhaust interface.

[0019] In one embodiment, at least one one-way electromagnetic valve is further included, which is arranged correspondingly with the auxiliary exhaust pipe.

[0020] The one-way electromagnetic valve is arranged in the auxiliary exhaust pipe.

[0021] The one-way electromagnetic valve is used to control the opening or closing of the auxiliary exhaust pipe.

[0022] In one embodiment, a first exhaust pipe and a second exhaust pipe are further included.

[0023] One end of the first exhaust pipe is in communication with the main exhaust muffler, and the other end is in communication with the outside.

[0024] One end of the second exhaust pipe is in communication with the auxiliary exhaust muffling device, and the other end is in communication with the outside.

[0025] In one embodiment, one end of the second exhaust pipe is in communication with the auxiliary exhaust muffling device, and the other end is in communication with the outside through the first exhaust pipe.

[0026] In one embodiment, the auxiliary exhaust muffling device includes a housing device, which has a closed cavity.

[0027] One end of the housing device is in communication with the multi-way valve through the auxiliary exhaust pipe, and the other end is in communication with the outside.

[0028] In one embodiment, the auxiliary exhaust muffling device further includes an auxiliary exhaust muffler, which is fixedly arranged in the closed cavity of the housing device.

[0029] One end of the auxiliary exhaust muffler in the housing device is in communication with the multi-way valve through the auxiliary exhaust pipe, and the other end is in communication with the outside.

[0030] In one embodiment, the auxiliary exhaust muffler is connected with the housing device through a rubber sleeve.

[0031] In one embodiment, two auxiliary exhaust silencing devices are provided, and the auxiliary exhaust pipes are equal in number to the auxiliary exhaust silencing devices.

[0032] The multi-way valve includes two auxiliary exhaust interfaces, and the two auxiliary exhaust silencing devices are in communication with the auxiliary exhaust interfaces of the multi-way valve through the auxiliary exhaust pipes.

[0033] In one embodiment, the exhaust pipe and the auxiliary exhaust pipe are fixedly connected to the multi-way valve through flanges.

[0034] Specific advantages: the exhaust silencing device disclosed in the application can reduce the volume of the main exhaust silencing cylinder by providing auxiliary exhaust silencing devices, has good noise reduction effect, and has simple structure and easy implementation.

[0035] The application also describes an exhaust silencing system including a rotational speed sensor, a throttle sensor, a control device, and the exhaust silencing device described above.

[0036] The control device is in communication connection with the rotational speed sensor, the throttle sensor, and the one-way electromagnetic valve of the exhaust silencing device, respectively.

[0037] The rotational speed sensor is used to detect the rotational speed of the engine of the vehicle.

[0038] The throttle sensor is used to detect the throttle opening degree of the vehicle.

[0039] The control device is used to receive the engine rotational speed sent by the rotational speed sensor and the throttle opening degree sent by the throttle sensor.

[0040] The control device is used to analyze and process the engine rotational speed and the throttle opening degree to obtain an analysis result.

[0041] The control device is used to control the opening or closing of the one-way electromagnetic valve according to the analysis result.

[0042] In one embodiment, the one-way electromagnetic valve includes an electromagnetic valve time control sensor, and the electromagnetic valve time control sensor is in communication connection with the control device.

[0043] The control device is used to generate an instruction for controlling the opening or closing of the one-way electromagnetic valve according to the analysis result, and send the instruction to the electromagnetic valve time control sensor.

[0044] The electromagnetic valve time control sensor is used to receive the instruction sent by the control device and execute the instruction.

[0045] Specific advantages: the exhaust silencing system disclosed in the application can control the one-way electromagnetic valve according to the engine speed and the throttle opening of the vehicle, that is, control the opening or closing of the auxiliary exhaust silencing device; time-sharing control can be realized, and the control principle is simple.

[0046] The application also describes a vehicle comprising a vehicle body and the above-described exhaust silencing system, one end of the intake pipe being in communication with the multi-way valve, and the other end being in communication with the exhaust pipe of the vehicle;

[0047] The multi-way valve is arranged on the floor of the vehicle body, the main exhaust silencing cylinder is arranged at the bottom of the trunk of the vehicle body, and the auxiliary exhaust silencing device is arranged at the bottom of the vehicle body.

[0048] In one embodiment, the housing device of the auxiliary exhaust silencing device comprises a rear longitudinal beam of the vehicle body, a wheel cover plate of the vehicle body, or a rear wall of the vehicle body.

[0049] Specific advantages: the vehicle disclosed in the application has a smaller main exhaust silencing cylinder, which can reduce the space occupied by the main exhaust silencing cylinder in the rear trunk, and improve the utilization rate of the rear trunk space; and the auxiliary exhaust silencing cylinder is arranged in the closed cavity structure at the bottom of the vehicle or in the closed cavity structure at the bottom of the vehicle, which improves the noise reduction effect of the vehicle under the premise of reducing the volume of the main exhaust silencing cylinder.

[0050] The application also describes an exhaust silencing method, which is implemented based on the above-described exhaust silencing system, and the method comprises:

[0051] Obtaining the engine speed and the throttle opening of the vehicle;

[0052] Determining whether the engine speed and the throttle opening meet preset conditions;

[0053] If the engine speed and the throttle opening meet the preset conditions, controlling the main exhaust silencing cylinder and the auxiliary exhaust silencing device of the exhaust silencing device based on a first control strategy.

[0054] In one embodiment, the determination of whether the engine speed and the throttle opening meet the preset conditions comprises:

[0055] Determining whether the engine speed is not less than a preset first threshold value and less than a preset second threshold value, and determining whether the throttle opening is not less than a preset third threshold value and less than a preset fourth threshold value;

[0056] When the engine speed is not less than the preset first threshold value and less than the preset second threshold value and / or the throttle opening is not less than the preset third threshold value and less than the preset fourth threshold value, it is determined that the engine speed and the throttle opening meet the preset conditions.

[0057] In one embodiment, when the engine speed and the throttle opening degree do not satisfy the preset condition, the method further comprises:

[0058] determining whether the engine speed is less than a preset first threshold value and whether the throttle opening degree is less than a preset third threshold value;

[0059] If the engine speed is less than the preset first threshold value and the throttle opening degree is less than the preset third threshold value, the main muffler and the auxiliary muffler of the exhaust silencing device are controlled based on a second control strategy.

[0060] In one embodiment, the first control strategy comprises controlling the main muffler and one of the auxiliary mufflers of the exhaust silencing device to be opened.

[0061] The second control strategy comprises controlling the main muffler to be opened and controlling the auxiliary muffler to be closed.

[0062] In one embodiment, when the engine speed and the throttle opening degree do not satisfy the preset condition, the method further comprises:

[0063] determining whether the engine speed is not less than a preset second threshold value and whether the throttle opening degree is not less than a preset fourth threshold value;

[0064] If the engine speed is not less than the preset second threshold value and the throttle opening degree is not less than the preset fourth threshold value, the main muffler and the auxiliary muffler of the exhaust silencing device are controlled based on a third control strategy.

[0065] In one embodiment, the third control strategy comprises controlling the main muffler and at least one of the auxiliary mufflers to be opened.

[0066] In one embodiment, the auxiliary muffler is provided with two, and the method further comprises:

[0067] The third control strategy is to control the main muffler and both of the auxiliary mufflers to be opened.

[0068] Specific advantages: the exhaust silencing method disclosed in the present application adopts different control strategies to control the main muffler and the auxiliary muffler according to the changes of the engine speed and the throttle opening degree of the vehicle; and intelligent time-sharing control of the exhaust silencing device is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art and the advantages thereof, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort based on these drawings.

[0070] Figure 1 It is a schematic diagram of the three-dimensional structure of the exhaust silencing device;

[0071] Figure 2 It is a schematic diagram of the structure of the multi-way valve in the exhaust silencing device;

[0072] Figure 3 It is Figure 2 the cross-sectional view of A-A direction in the figure;

[0073] Figure 4 It is a schematic diagram of the flow of an exhaust silencing method;

[0074] Figure 5 It is a schematic diagram of the structure of an exhaust silencing terminal;

[0075] In the figure, the reference signs correspond to: 1 - intake pipe, 2 - main exhaust silencing cylinder, 3 - main exhaust pipe, 4 - auxiliary exhaust silencing device, 401 - housing device, 402 - auxiliary exhaust silencing cylinder, 5 - auxiliary exhaust pipe, 6 - multi-way valve, 7 - one-way electromagnetic valve, 701 - electromagnetic valve time-sharing control sensor, 8 - first exhaust pipe, 9 - second exhaust pipe, 10 - flange. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings.

[0077] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and in the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. The terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. In different implementation variants, the same components have the same reference numerals.

[0078] As Figure 1 It is a schematic diagram of the three-dimensional structure of the exhaust silencing device disclosed by the present application, which comprises an intake pipe 1, a main exhaust silencing cylinder 2, a main exhaust pipe 3, a multi-way valve 6, at least one auxiliary exhaust silencing device 4 and at least one auxiliary exhaust pipe 5;

[0079] The multi-way valve 6 is in communication with the intake pipe 1, the main exhaust pipe 3 and the auxiliary exhaust pipe 5, respectively.

[0080] Specifically, the inlet end of the multi-way valve is connected to the inlet pipe 1, and the exhaust end is connected to the main exhaust pipe 3 and the auxiliary exhaust pipe 5 respectively;

[0081] One end of the main exhaust muffler 2 is connected to the multi-way valve 6 through the main exhaust pipe 3, and the other end is connected to the outside.

[0082] One end of the auxiliary exhaust muffler 4 is connected to the multi-way valve 6 via the auxiliary exhaust pipe 5, and the other end is connected to the outside.

[0083] Specifically, the multi-way valve 6 includes a main exhaust port and at least one auxiliary exhaust port; the auxiliary exhaust port is correspondingly provided with the auxiliary exhaust pipe 5.

[0084] The multi-way valve 6 is connected to the main exhaust pipe 3 through the main exhaust port;

[0085] The multi-way valve 6 is connected to the auxiliary exhaust pipe 5 through the auxiliary exhaust port.

[0086] like Figure 1 As shown, there are two auxiliary exhaust mufflers 4, and the number of auxiliary exhaust pipes 5 is the same as the number of auxiliary exhaust mufflers 4.

[0087] Preferably, there can be two auxiliary exhaust ports, that is, the multi-way valve 6 includes one main exhaust port and two auxiliary exhaust ports. Specifically, there are also two auxiliary exhaust pipes 5 corresponding to the auxiliary exhaust ports. The two auxiliary exhaust mufflers 4 are connected to the auxiliary exhaust ports of the multi-way valve through the auxiliary exhaust pipes 5. In this case, the multi-way valve 6 can be a three-way valve.

[0088] Specifically, both the exhaust pipe and the auxiliary exhaust pipe 5 are fixedly connected to the multi-way valve 6 via flange 10.

[0089] like Figure 2 As shown, it also includes at least one one-way solenoid valve 7, which is configured correspondingly to the auxiliary exhaust port;

[0090] The one-way solenoid valve 7 is located at the auxiliary exhaust port inside the multi-way valve 6;

[0091] The one-way solenoid valve 7 is used to control the opening or closing of the auxiliary exhaust port.

[0092] like Figure 2 As shown, it also includes at least one one-way solenoid valve 7, which is configured correspondingly to the auxiliary exhaust pipe 5;

[0093] The one-way solenoid valve 7 is disposed inside the auxiliary exhaust pipe 5;

[0094] The one-way electromagnetic valve 7 is used to control the opening or closing of the auxiliary exhaust pipe 5.

[0095] Preferably, when the auxiliary exhaust interface and the auxiliary exhaust pipe 5 are both provided with two, the corresponding one-way electromagnetic valve 7 is also provided with two, and each one-way electromagnetic valve 7 controls the opening or closing of one auxiliary exhaust interface or auxiliary exhaust pipe 5.

[0096] Specifically, as shown in Figure 3 , when the one-way electromagnetic valve 7 is in the A1 position, the one-way electromagnetic valve 7 is in a closed state, and when the one-way electromagnetic valve 7 is in the A2 position, the one-way electromagnetic valve 7 is in an open state.

[0097] As shown in Figure 1 and 2 , it also includes a first exhaust pipe 8 and a second exhaust pipe 9;

[0098] One end of the first exhaust pipe 8 is in communication with the main exhaust muffler 2, and the other end is in communication with the outside;

[0099] One end of the second exhaust pipe 9 is in communication with the auxiliary exhaust muffling device 4, and the other end is in communication with the outside; this design can exhaust the gas in the main exhaust muffler 2 or the auxiliary exhaust muffling device 4 to the air.

[0100] Preferably, one end of the second exhaust pipe 9 is in communication with the auxiliary exhaust muffling device 4, and the other end is in communication with the outside through the first exhaust pipe 8; that is, the second exhaust pipe 9 exhausts exhaust gas to the air through the first exhaust pipe 8.

[0101] As shown in Figure 1 , the auxiliary exhaust muffling device 4 includes a housing device 401, and the housing device 401 has a closed cavity;

[0102] One end of the housing device 401 is in communication with the multi-way valve 6 through the auxiliary exhaust pipe 5, and the other end is in communication with the outside; that is, the housing device 401 directly functions as the auxiliary exhaust muffling device 4 to achieve the function of exhaust muffling;

[0103] Specifically, when the housing device 401 alone functions as the auxiliary exhaust muffling device 4, the housing device 401 is required to have the functions of heat resistance and sound attenuation.

[0104] As shown in Figure 1 , the auxiliary exhaust muffling device 4 further includes an auxiliary exhaust muffler 402, and the auxiliary exhaust muffler 402 is fixedly arranged in the closed cavity of the housing device 401;

[0105] The auxiliary exhaust muffler 402 in the shell device 401 is communicated with the multi-way valve 6 through an auxiliary exhaust pipe 5 at one end and communicated with the outside at the other end; in the present application, the auxiliary exhaust muffler 402 is arranged in the shell device 401, so that the shell device 401 and the auxiliary exhaust muffler 402 together serve as the auxiliary exhaust muffling device 4 to realize the function of exhaust muffling;

[0106] Specifically, when the shell device 401 cannot realize the function of exhaust muffling alone, the auxiliary exhaust muffler 402 capable of realizing the function of exhaust muffling needs to be arranged in the shell device 401;

[0107] Preferably, a heat insulation layer or the like can also be arranged in the auxiliary exhaust muffler 402.

[0108] Specifically, the auxiliary exhaust muffler 402 is connected with the shell device 401 through a rubber sleeve;

[0109] Specifically, one end of the rubber sleeve is fixedly connected with the shell device 401, and the other end is fixedly connected with the auxiliary exhaust muffler 402; in the present application, the soft connection mode is adopted to reduce the shock during the movement of the vehicle, reduce the wear of the auxiliary exhaust muffler 402, and prolong the service life of the auxiliary exhaust muffler 402;

[0110] Preferably, the rubber sleeve can be sleeved on the auxiliary exhaust muffler 402; a buffer layer having a high-temperature resistance function can also be arranged on the outer wall of the auxiliary exhaust muffler 402.

[0111] The exhaust muffling device of the present application can reduce the volume of the main exhaust muffler 2 through the arrangement of the auxiliary exhaust muffling device 4, has a good noise reduction effect, has a simple structure, and is easy to realize.

[0112] The present application also provides an exhaust muffling system, which comprises a rotating speed sensor, a throttle sensor, a control device and the exhaust muffling device described above;

[0113] Specifically, the rotating speed sensor, the throttle sensor and the control device are arranged on a vehicle body, and the control device can be an ECU control center;

[0114] The control device is in communication connection with the rotating speed sensor, the throttle sensor and the one-way electromagnetic valve 7 of the exhaust muffling device, respectively;

[0115] The rotating speed sensor is used to detect the rotating speed of a vehicle engine;

[0116] The throttle sensor is used to detect the throttle opening degree of the vehicle;

[0117] The control device is used to receive the engine rotating speed sent by the rotating speed sensor and the throttle opening degree sent by the throttle sensor.

[0118] The control device is used to analyze and process the engine speed and the throttle opening to obtain analysis results;

[0119] The control device is used to control the one-way solenoid valve 7 to open or close based on the analysis results.

[0120] Specifically, the control device is used to analyze and process the engine speed and the throttle opening to determine whether the engine speed and the throttle opening meet the preset conditions.

[0121] If the analysis results show that the engine speed and throttle opening meet the preset conditions, the control device controls one of the one-way solenoid valves 7 to open.

[0122] If the analysis results indicate that the engine speed and throttle opening do not meet the preset conditions, the control device controls the one-way solenoid valve 7 to close or controls at least one of the one-way solenoid valves 7 to open.

[0123] Specifically, such as Figure 3 As shown, the one-way solenoid valve 7 includes a solenoid valve time-sharing control sensor 701, which is communicatively connected to the control device.

[0124] The control device is used to generate a command to control the one-way solenoid valve 7 to open or close based on the analysis results, and send the command to the solenoid valve time-sharing control sensor 701;

[0125] The time-sharing control sensor 701 for the solenoid valve is used to receive and execute the instructions sent by the control device, causing the one-way solenoid valve 7 to open or close.

[0126] The exhaust muffler system of this application can control the one-way solenoid valve 7 according to the engine speed and throttle opening of the vehicle, that is, control the opening or closing of the auxiliary exhaust muffler device 4; it can achieve time-sharing control and the control principle is simple.

[0127] This application also provides a vehicle, including a body and the exhaust muffler system described above, wherein one end of the intake pipe 1 is connected to the multi-way valve 6 and the other end is connected to the vehicle's exhaust pipe.

[0128] The multi-way valve 6 is located on the vehicle floor, the main exhaust muffler 2 is located at the bottom of the vehicle trunk, and the auxiliary exhaust muffler 4 is located at the bottom of the vehicle.

[0129] Specifically, the end of the intake pipe 1 furthest from the multi-way valve 6 is connected to the exhaust pipe of the vehicle engine.

[0130] Specifically, the shell device 401 of the auxiliary exhaust muffling device 4 comprises a vehicle body rear longitudinal beam, a vehicle body wheel cover plate or a vehicle body rear wall plate.

[0131] Preferably, the shell device 401 is a vehicle body rear longitudinal beam, and the auxiliary exhaust muffling cylinder 402 is fixedly arranged in the vehicle body rear longitudinal beam to realize the exhaust muffling function.

[0132] The vehicle disclosed in the present application can reduce the volume of the main exhaust muffling cylinder 2 by arranging the auxiliary exhaust muffling device 4, can reduce the space occupied by the main exhaust muffling cylinder 2 in the rear luggage compartment and improve the utilization rate of the rear luggage compartment, and directly uses the closed cavity structure (for example, the rear longitudinal beam) at the bottom of the vehicle as the auxiliary exhaust muffling device 4 or arranges the auxiliary exhaust muffling cylinder 402 in the closed cavity structure at the bottom of the vehicle to serve as the auxiliary exhaust muffling device 4, which is easy to implement and can improve the noise reduction effect of the vehicle while reducing the volume of the main exhaust muffling cylinder 2.

[0133] The present application also provides an exhaust muffling method, which is implemented based on the exhaust muffling system described above, as shown in the flowchart of an exhaust muffling method. Figure 4 The method comprises the following steps:

[0134] The method comprises the following steps:

[0135] S101, acquiring the engine speed and the throttle opening degree of the vehicle;

[0136] Specifically, the engine speed and the throttle opening degree of the vehicle are acquired in real time during the operation of the vehicle.

[0137] S103, judging whether the engine speed and the throttle opening degree satisfy a preset condition;

[0138] Specifically, the judgment of whether the engine speed and the throttle opening degree satisfy a preset condition comprises:

[0139] A1, judging whether the engine speed is not less than a preset first threshold value and less than a preset second threshold value and whether the throttle opening degree is not less than a preset third threshold value and less than a preset fourth threshold value;

[0140] A2, when the engine speed is not less than the preset first threshold value and less than the preset second threshold value and / or the throttle opening degree is not less than the preset third threshold value and less than the preset fourth threshold value, it is determined that the engine speed and the throttle opening degree satisfy the preset condition.

[0141] Specifically, when only the engine speed is not less than the preset first threshold value and less than the preset second threshold value, it is determined that the engine speed and the throttle opening degree satisfy the preset condition.

[0142] When only the throttle opening degree is not less than a preset third threshold value and less than a preset fourth threshold value, it is determined that the engine speed and the throttle opening degree meet the preset condition;

[0143] When the engine speed is not less than a preset first threshold value and less than a preset second threshold value and the throttle opening degree is not less than a preset third threshold value and less than a preset fourth threshold value, it is also determined that the engine speed and the throttle opening degree meet the preset condition.

[0144] Specifically, the preset first threshold value can be 3000 r / min, the preset second threshold value can be 4000 r / min; the preset third threshold value can be that the throttle opening degree reaches 1 / 3, and the preset fourth threshold value can be that the throttle opening degree reaches 1 / 2.

[0145] S105, if the engine speed and the throttle opening degree meet the preset condition, controlling the main exhaust muffler and the auxiliary exhaust muffler of the exhaust silencer based on a first control strategy.

[0146] Specifically, the first control strategy can be to control the main exhaust muffler and one of the auxiliary exhaust mufflers of the exhaust silencer to be opened.

[0147] That is, if the engine speed and the throttle opening degree meet the preset condition, the main exhaust muffler and one of the auxiliary exhaust mufflers of the exhaust silencer are controlled to be opened; at this time, the exhaust silencing is performed by the main exhaust muffler and one of the auxiliary exhaust mufflers to achieve the requirement of silencing the exhaust of the engine.

[0148] After the judgment of whether the engine speed and the throttle opening degree meet the preset condition, the method further comprises:

[0149] When the engine speed and the throttle opening degree do not meet the preset condition, the method further comprises:

[0150] B1, judging whether the engine speed is less than a preset first threshold value and whether the throttle opening degree is less than a preset third threshold value;

[0151] B2, if the engine speed is less than the preset first threshold value and the throttle opening degree is less than the preset third threshold value, controlling the main exhaust muffler and the auxiliary exhaust muffler of the exhaust silencer based on a second control strategy.

[0152] Specifically, the second control strategy can be to control the main exhaust muffler to be opened and control the auxiliary exhaust muffler to be closed.

[0153] That is, if the engine speed is less than a preset first threshold value and the throttle opening is less than a preset third threshold value, the main exhaust muffler is controlled to be opened and the auxiliary exhaust muffling device is controlled to be closed; at this time, only the main exhaust muffler performs exhaust muffling, that is, the requirement of muffling exhaust of the engine is met.

[0154] When the engine speed and the throttle opening do not meet the preset condition, the method further comprises:

[0155] C1, judging whether the engine speed is not less than a preset second threshold value and whether the throttle opening is not less than a preset fourth threshold value;

[0156] C2, if the engine speed is not less than the preset second threshold value and the throttle opening is not less than the preset fourth threshold value, the main exhaust muffler and the auxiliary exhaust muffling device of the exhaust muffling device are controlled based on a third control strategy.

[0157] Specifically, the third control strategy can be to control the main exhaust muffler and at least one of the auxiliary exhaust muffling devices to be opened.

[0158] That is, if the engine speed is not less than the preset second threshold value and the throttle opening is not less than the preset fourth threshold value, the main exhaust muffler and at least one of the auxiliary exhaust muffling devices are controlled to be opened.

[0159] Preferably, when the auxiliary exhaust muffling device is provided with two, the third control strategy can be to control the main exhaust muffler and the two auxiliary exhaust muffling devices to be opened; at this time, the exhaust muffling effect of the engine can be better improved.

[0160] The exhaust muffling method of the application adopts different control strategies to control the main exhaust muffler and the auxiliary exhaust muffling device according to the change of the engine speed and the throttle opening of the vehicle; and intelligent time-sharing control of the exhaust muffling device is realized.

[0161] The application also provides an exhaust muffling terminal, which comprises a processor and a memory, the memory stores at least one instruction or at least one program, the at least one instruction or the at least one program is loaded and executed by the processor to realize the parking method as described in the above method embodiment.

[0162] The memory can be used to store software programs and modules, and the processor executes various function applications and data processing by running the software programs and modules stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs required for functions, etc.; and the data storage area can store data created according to the use of the device, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory can also include a memory controller to provide access for the processor to the memory.

[0163] Figure 5 A structural diagram of an exhaust silencing terminal is provided in the present application, and the internal structure of the exhaust silencing terminal can include but is not limited to a processor, a network interface, and a memory. The processor, the network interface, and the memory in the exhaust silencing terminal can be connected by a bus or other means, and in the embodiment of the present specification, a bus connection is taken as an example. Figure 5

[0164] The processor (or CPU (Central Processing Unit)) is the computing core and control core of the exhaust silencing terminal. The network interface can optionally include a standard wired interface, a wireless interface (such as WI-FI, a mobile communication interface, etc.). The memory is a memory device in the exhaust silencing terminal, used for storing programs and data. It can be understood that the memory here can be a high-speed RAM storage device, or a non-volatile memory, such as at least one magnetic disk storage device; optionally, it can also be at least one storage device located away from the aforementioned processor. The memory provides a storage space that stores the operating system of the exhaust silencing terminal, which can include but is not limited to a Windows system (an operating system), Linux (an operating system), etc., and the present application is not limited thereto; and in the storage space, one or more instructions suitable for being loaded and executed by the processor are also stored, which can be one or more computer programs (including program codes). In the embodiment of the present specification, the processor loads and executes one or more instructions stored in the memory to implement the exhaust silencing method provided by the method embodiment.

[0165] The above disclosure is only a preferred embodiment of the present application, and of course cannot limit the scope of the rights of the present application, so equivalent changes made according to the claims of the present application are still within the scope covered by the present application.​

Claims

1. A vehicle comprising: Body; as well as An exhaust muffler system, comprising: An exhaust muffler includes an intake pipe (1), a main exhaust muffler (2), a main exhaust pipe (3), a multi-way valve (6), at least one auxiliary exhaust muffler (4), and at least one auxiliary exhaust pipe (5); wherein The multi-way valve (6) is connected to the intake pipe (1), the main exhaust pipe (3) and the auxiliary exhaust pipe (5) respectively; One end of the main exhaust muffler (2) is connected to the multi-way valve (6) through the main exhaust pipe (3), and the other end is connected to the outside. One end of the auxiliary exhaust silencer (4) is connected to the multi-way valve (6) through the auxiliary exhaust pipe (5), and the other end is connected to the outside. One end of the intake pipe (1) is connected to the multi-way valve (6), and the other end is connected to the exhaust pipe of the vehicle. The multi-way valve (6) is located on the floor of the vehicle body, the main exhaust muffler (2) is located at the bottom of the vehicle body luggage compartment, and the auxiliary exhaust muffler (4) is located at the bottom of the vehicle body. The auxiliary exhaust silencer device (4) includes: a housing device (401) with a closed cavity, and an auxiliary exhaust silencer (402). The auxiliary exhaust silencer (402) is fixedly installed in the closed cavity of the housing device (401). One end of the auxiliary exhaust silencer (402) in the housing device (401) is connected to the multi-way valve (6) through an auxiliary exhaust pipe (5), and the other end is connected to the outside. The housing assembly (401) of the auxiliary exhaust muffler (4) includes a rear longitudinal beam, a wheel arch, or a rear bulkhead.

2. The vehicle according to claim 1, characterized in that: The multi-way valve (6) includes a main exhaust port and at least one auxiliary exhaust port; the auxiliary exhaust port is correspondingly provided with the auxiliary exhaust pipe (5); The multi-way valve (6) is connected to the main exhaust pipe (3) through the main exhaust port; The multi-way valve (6) is connected to the auxiliary exhaust pipe (5) through the auxiliary exhaust port.

3. The vehicle according to claim 2, characterized in that: The exhaust silencing device also includes at least one one-way solenoid valve (7), which is configured correspondingly to the auxiliary exhaust port; The one-way solenoid valve (7) is located at the auxiliary exhaust port inside the multi-way valve (6); The one-way solenoid valve (7) is used to control the opening or closing of the auxiliary exhaust port.

4. The vehicle according to claim 2, characterized in that: The exhaust muffler also includes at least one one-way solenoid valve (7), which is correspondingly arranged with the auxiliary exhaust pipe (5); The one-way solenoid valve (7) is disposed inside the auxiliary exhaust pipe (5); The one-way solenoid valve (7) is used to control the opening or closing of the auxiliary exhaust pipe (5).

5. The vehicle according to claim 1, characterized in that: The exhaust muffler also includes a first exhaust pipe (8) and a second exhaust pipe (9); One end of the first exhaust pipe (8) is connected to the main exhaust muffler (2), and the other end is connected to the outside. One end of the second exhaust pipe (9) is connected to the auxiliary exhaust muffler (4), and the other end is connected to the outside.

6. The vehicle according to claim 5, characterized in that: One end of the second exhaust pipe (9) is connected to the auxiliary exhaust muffler (4), and the other end is connected to the outside through the first exhaust pipe (8).

7. The vehicle according to claim 1 or 2, characterized in that: The auxiliary exhaust muffler (402) is connected to the housing device (401) via a rubber sleeve.

8. The vehicle according to claim 2, characterized in that: There are two auxiliary exhaust mufflers (4), and the number of auxiliary exhaust pipes (5) is the same as that of the auxiliary exhaust mufflers (4). The multi-way valve (6) includes two auxiliary exhaust ports, and the two auxiliary exhaust silencers (4) are connected to the auxiliary exhaust ports of the multi-way valve through the auxiliary exhaust pipe (5).

9. The vehicle according to claim 1 or 8, characterized in that: The main exhaust pipe (3) and the auxiliary exhaust pipe (5) are both fixedly connected to the multi-way valve (6) via flanges (10).

10. The vehicle according to claim 3 or 4, characterized in that: The exhaust muffler system also includes a speed sensor, a throttle sensor, and a control device; The control device is communicatively connected to the speed sensor, the throttle sensor and the one-way solenoid valve (7) of the exhaust muffler; The speed sensor is used to detect the vehicle engine speed; The throttle sensor is used to detect the throttle opening of the vehicle; The control device is used to receive the engine speed sent by the speed sensor and the throttle opening sent by the throttle sensor; The control device is used to analyze and process the engine speed and the throttle opening to obtain analysis results; The control device is used to control the one-way solenoid valve (7) to open or close according to the analysis results.

11. The vehicle according to claim 10, characterized in that: The one-way solenoid valve (7) includes a solenoid valve time-sharing control sensor (701), which is communicatively connected to the control device. The control device is used to generate a command to control the one-way solenoid valve (7) to open or close based on the analysis results, and sends the command to the solenoid valve time-sharing control sensor (701); The solenoid valve time-sharing control sensor (701) is used to receive and execute the instructions sent by the control device.

12. A method for silencing exhaust gases in a vehicle according to any one of claims 1-11, characterized in that: The method includes: Obtain the vehicle's engine speed and throttle opening; Determine whether the engine speed and throttle opening meet the preset conditions; If the engine speed and throttle opening meet the preset conditions, the main exhaust muffler and auxiliary exhaust muffler of the exhaust muffler device are controlled based on the first control strategy.

13. The exhaust silencing method according to claim 12, characterized in that: The determination of whether the engine speed and throttle opening meet the preset conditions includes: Determine whether the engine speed is not less than a preset first threshold and less than a preset second threshold; determine whether the throttle opening is not less than a preset third threshold and less than a preset fourth threshold; When the engine speed is not less than a preset first threshold and less than a preset second threshold and / or the throttle opening is not less than a preset third threshold and less than a preset fourth threshold, it is determined that the engine speed and throttle opening meet the preset conditions.

14. The exhaust silencing method according to claim 13, characterized in that: When the engine speed and throttle opening do not meet the preset conditions, the method further includes: Determine whether the engine speed is less than a preset first threshold, and determine whether the throttle opening is less than a preset third threshold; If the engine speed is less than a preset first threshold and the throttle opening is less than a preset third threshold, then the main exhaust muffler and auxiliary exhaust muffler of the exhaust muffler are controlled based on the second control strategy.

15. The exhaust silencing method according to claim 14, characterized in that: The first control strategy includes controlling the opening of the main exhaust muffler and an auxiliary exhaust muffler of the exhaust muffler device; The second control strategy includes controlling the main exhaust muffler to open and controlling the auxiliary exhaust muffler to close.

16. The exhaust silencing method according to claim 13, characterized in that: When the engine speed and throttle opening do not meet the preset conditions, the method further includes: Determine whether the engine speed is not less than a preset second threshold, and determine whether the throttle opening is not less than a preset fourth threshold; If the engine speed is not less than a preset second threshold and the throttle opening is not less than a preset fourth threshold, then the main exhaust muffler and auxiliary exhaust muffler of the exhaust muffler are controlled based on the third control strategy.

17. The exhaust silencing method according to claim 16, characterized in that: The third control strategy includes controlling the main exhaust muffler and at least one of the auxiliary exhaust mufflers to open.

18. The exhaust silencing method according to claim 17, characterized in that: The auxiliary exhaust muffler is provided in two parts, and also includes: The third control strategy is to control both the main exhaust muffler and the two auxiliary exhaust mufflers to open.

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