WO2023165337A1 - Combined exhaust pipe structure and engine exhaust system - Google Patents

Combined exhaust pipe structure and engine exhaust system Download PDF

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Publication number
WO2023165337A1
WO2023165337A1 PCT/CN2023/076379 CN2023076379W WO2023165337A1 WO 2023165337 A1 WO2023165337 A1 WO 2023165337A1 CN 2023076379 W CN2023076379 W CN 2023076379W WO 2023165337 A1 WO2023165337 A1 WO 2023165337A1
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WIPO (PCT)
Prior art keywords
valve
exhaust pipe
pipe structure
exhaust
cylinders
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PCT/CN2023/076379
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French (fr)
Chinese (zh)
Inventor
孙放
陈春林
张方方
孙坤
颜鲁
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潍柴动力股份有限公司
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Publication of WO2023165337A1 publication Critical patent/WO2023165337A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/14—Control of the alternation between or the operation of exhaust drive and other drive of a pump, e.g. dependent on speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present application relates to the technical field of engine exhaust, for example, to a composite exhaust pipe structure and an engine exhaust system.
  • the exhaust pipe is an important part of the engine exhaust system, and the constant pressure pulse exhaust pipe is one of them.
  • the present application provides a composite exhaust pipe structure, which is applicable to different performance requirements of the engine under various working conditions.
  • One embodiment provides a composite exhaust pipe structure, which is arranged corresponding to a row of cylinders of the body, and the composite exhaust pipe structure includes valves, two constant pressure pulse exhaust pipes and two superchargers; wherein, the valves are arranged in a row of cylinders On the exhaust pipeline, and the valve divides a row of cylinders of the body into two cylinder groups, and each cylinder group corresponds to a constant pressure pulse exhaust pipe; the two constant pressure pulse exhaust pipes are respectively connected with two superchargers, And one-to-one corresponding setting; the valve is set to be able to switch between the connected state and the closed state; when the valve is in the connected state, the exhaust pipes between the two cylinder groups are connected to each other; when the valve is in the closed state, the two The exhaust lines between the cylinder banks are disconnected.
  • the exhaust pipes of the two cylinder groups communicate with each other, that is, the exhaust pipes between the two cylinder groups communicate with each other, and the exhaust pipes of each cylinder
  • the exhaust pipeline is connected with the two sections of constant-pressure pulse exhaust pipes, so as to expand the overall volume of the exhaust pipeline to achieve the effect of stabilizing the pressure.
  • each cylinder group corresponds to a constant-pressure pulse exhaust pipe, each section of the exhaust pipe forms several continuous pulse waves directly into the supercharger, the throttling loss is small, and the scavenging in the cylinder is strengthened to increase the intake air volume, making this working condition Has a higher torque reserve capability.
  • this composite exhaust pipe structure can be adapted to different performance requirements of the engine under various working conditions by switching the valve between the connected state and the closed state.
  • the valve divides a row of cylinders of the machine body into two cylinder groups equally, and the number of cylinders in each cylinder group is the same.
  • the composite exhaust pipe structure further includes a driving device; the driving device is configured to control the valve to switch between a connected state and a closed state.
  • the driving device is an electronic control unit
  • the valve is an electromagnetic valve
  • the electronic control unit is set to obtain the boost ratio of the real-time working condition, and when the boost ratio is high, the electronic control unit controls the solenoid valve to open, so that the electromagnetic The valve is in a connected state; and when the boost pressure is relatively low, the electronic control unit controls the solenoid valve to close, so that the solenoid valve switches to the closed state.
  • each supercharger includes a compressor and a turbine connected to the compressor, and the two constant-pressure pulse exhaust pipes are respectively connected to the corresponding two turbines.
  • the composite exhaust pipe structure further includes an intercooler; the compressors of the two superchargers are respectively communicated with the intercooler.
  • An embodiment provides an engine exhaust system, including a machine body and any composite exhaust pipe structure described above, where the composite exhaust pipe structure is installed on a row of cylinders of the machine body.
  • Fig. 1 is a structural schematic diagram of a composite exhaust pipe structure provided by an embodiment of the present application installed on a row of cylinders of a machine body.
  • Icons 1-valve; 2-constant pressure pulse exhaust pipe; 3-supercharger; 4-compressor; 5-turbine; 6-intercooler, 7-exhaust pipeline.
  • Fig. 1 is a structural schematic diagram of a composite exhaust pipe structure provided by an embodiment of the application installed on a row of cylinders of the body.
  • the composite exhaust pipe structure provided by the embodiment of the application includes a valve 1, two Constant pressure pulse exhaust pipe 2 and two superchargers 3; wherein, valve 1 is set on the exhaust pipeline 7 of a row of cylinders, and valve 1 divides a row of cylinders of the body into two cylinder groups, And each cylinder group corresponds to a constant-pressure pulse exhaust pipe 2; two constant-pressure pulse exhaust pipes 2 are respectively connected to two superchargers 3, and are arranged in one-to-one correspondence; the valve 1 can be connected between the connected state and the closed state Switch between; when the valve 1 is in the connected state, the exhaust pipeline 7 between the two cylinder groups is connected to each other; when the valve 1 is in the closed state, the exhaust pipeline 7 between the two cylinder groups is disconnected.
  • the exhaust pipelines 7 between the two cylinder groups communicate with each other, that is, the exhaust pipelines 7 between the two cylinder groups communicate with each other,
  • the exhaust pipeline 7 of each cylinder communicates with the two constant-pressure pulse exhaust pipes 2, so as to expand the overall volume of the exhaust pipeline 7 to achieve the effect of stabilizing the pressure.
  • each cylinder group corresponds to a constant pressure pulse exhaust pipe 2, and each section of the exhaust pipe forms several continuous pulse waves directly Entering the supercharger 3, the throttling loss is small, and the scavenging in the cylinder is strengthened to increase the intake air volume, so that this working condition has a higher torque reserve capacity.
  • this composite exhaust pipe structure can be adapted to different performance requirements of the engine under various working conditions by switching the valve 1 between the connected state and the closed state.
  • valve 1 divides a row of cylinders of the machine body into two cylinder groups equally, and the number of cylinders in each cylinder group is the same.
  • the V12 engine is taken as an example in Fig. 1 for illustration, the number of cylinders in each column of the V12 engine is six, and the valve 1 is arranged between the cylinder 3 and the cylinder 4; thus, it can be ensured A row of cylinders is evenly divided into two cylinder groups by the valve 1, and each cylinder group has three cylinders, so that when the valve 1 is in the closed state, the volume of the exhaust pipeline 7 corresponding to each cylinder group is the same, and there will be no If the volume of the exhaust pipeline 7 is too large or too small, the working efficiency of the composite exhaust pipe structure is further guaranteed.
  • the composite exhaust pipe structure further includes a driving device; the driving device is configured to control the switching of the valve 1 between the connected state and the closed state.
  • the driving device is an electronic control unit
  • the valve 1 is a solenoid valve
  • the electric control unit is set to obtain the boost ratio of the real-time working condition, and when the boost ratio is relatively high, the solenoid valve is controlled to open, so that the solenoid valve is in the connected state; and when the boost pressure is relatively low, the solenoid valve is controlled to be closed, so that the solenoid valve is switched to the closed state.
  • the electronic control unit controls the solenoid valve to open to expand the overall volume of the exhaust pipeline to achieve the effect of stabilizing the pressure; when the boost pressure is relatively low, the electronic control unit The unit controls the solenoid valve to close to reduce throttling loss, and strengthen the scavenging in the cylinder to increase the intake air volume, so that the low boost ratio working condition has a higher torque reserve capacity; when the solenoid valve is opened or closed, the specific The working process is the same as above and will not be repeated.
  • the setting of the electronic control unit and the solenoid valve can automatically switch the state of the solenoid valve (connected state or closed state) according to the actual situation of the boost ratio, so that it is suitable for working conditions with different performance requirements.
  • each supercharger 3 includes a compressor 4 and a turbine 5 communicating with the compressor 4 , and two constant-pressure pulse exhaust pipes 2 are connected to corresponding two turbines 5 .
  • the nozzle ring of the turbine 5 can realize constant-pressure full-circle air intake, thereby improving the intake efficiency, and has less interference with the exhaust of each cylinder, thereby reducing pumping loss, improving thermal efficiency, and reducing fuel consumption.
  • the composite exhaust pipe structure also includes an intercooler 6; the intercooler 6 communicates with the two superchargers 3, specifically, the compressed air of the two superchargers 3 Machines 4 communicate with intercoolers 6 respectively.
  • the intercooler 6 can reduce the intake air temperature, reduce fuel consumption, and improve the matching and adaptability of the supercharger 3 .
  • the embodiment of the present application also provides an engine exhaust system, including a body and any composite exhaust pipe structure described above, and the composite exhaust pipe structure is installed on a row of cylinders of the body.
  • the beneficial effect of the engine exhaust system is the same as that of any composite exhaust pipe structure described above, and will not be repeated here.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

A combined exhaust pipe structure arranged corresponding to a row of cylinders of a machine body. The structure comprises a valve (1), two constant-pressure pulse exhaust pipes (2) and two superchargers (3), wherein the valve (1) is arranged on exhaust pipelines (7) of the row of cylinders, and divides the row of cylinders of the machine body into two cylinder groups, and each cylinder group corresponds to one constant-pressure pulse exhaust pipe (2); the two constant-pressure pulse exhaust pipes (2) are respectively connected to the two superchargers (3) in a one-to-one corresponding manner; and the valve (1) is configured to switch between a communication state and a closed state. When the valve (1) is in the communication state, the exhaust pipelines between the two cylinder groups communicate with each other; and when the valve (1) is in the closed state, the exhaust pipelines between the two cylinder groups are disconnected. Further disclosed is an engine exhaust system. In actual applications, the different performance requirements of an engine under various working conditions can be adapted.

Description

复合排气管结构及发动机排气系统Composite exhaust pipe structure and engine exhaust system
本申请要求于2022年03月04日提交中国专利局、申请号为202210207463.X、发明名称为“复合排气管结构及发动机排气系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202210207463.X and the title of the invention "composite exhaust pipe structure and engine exhaust system" submitted to the China Patent Office on March 4, 2022, the entire content of which is incorporated by reference incorporated in this application.
技术领域technical field
本申请涉及发动机排气技术领域，例如涉及一种复合排气管结构及发动机排气系统。The present application relates to the technical field of engine exhaust, for example, to a composite exhaust pipe structure and an engine exhaust system.
背景技术Background technique
排气管是发动机排气系统的重要组成部分，定压脉冲排气管就是其中的一种。The exhaust pipe is an important part of the engine exhaust system, and the constant pressure pulse exhaust pipe is one of them.
由于相关技术中的定压脉冲排气管无法适用于全部工况，因此哪怕对于同系列的不同用途发动机，为兼顾发动机的性能，排气管的结构通常也不统一；导致生产、维修管理复杂。Since the constant pressure pulse exhaust pipe in the related art cannot be applied to all working conditions, even for engines of the same series with different purposes, in order to take into account the performance of the engine, the structure of the exhaust pipe is usually not uniform; resulting in complicated production and maintenance management .
发明内容Contents of the invention
本申请提供了一种复合排气管结构，能够在各种工况下适用于发动机不同的性能需求。The present application provides a composite exhaust pipe structure, which is applicable to different performance requirements of the engine under various working conditions.
一实施例提供一种复合排气管结构，对应于机体的一列气缸设置，复合排气管结构包括阀门、两个定压脉冲排气管以及两个增压器；其中，阀门设置于一列气缸的排气管路上，且阀门将机体的一列气缸分成两个气缸组，且每个气缸组对应一个定压脉冲排气管；两个定压脉冲排气管分别与两个增压器连接、且一一对应设置；阀门设置为能够在连通状态以及关闭状态之间切换；当阀门处于连通状态时，两个气缸组之间的排气管路互相连通；当阀门处于关闭状态时，两个气缸组之间的排气管路断开。One embodiment provides a composite exhaust pipe structure, which is arranged corresponding to a row of cylinders of the body, and the composite exhaust pipe structure includes valves, two constant pressure pulse exhaust pipes and two superchargers; wherein, the valves are arranged in a row of cylinders On the exhaust pipeline, and the valve divides a row of cylinders of the body into two cylinder groups, and each cylinder group corresponds to a constant pressure pulse exhaust pipe; the two constant pressure pulse exhaust pipes are respectively connected with two superchargers, And one-to-one corresponding setting; the valve is set to be able to switch between the connected state and the closed state; when the valve is in the connected state, the exhaust pipes between the two cylinder groups are connected to each other; when the valve is in the closed state, the two The exhaust lines between the cylinder banks are disconnected.
本申请提供的复合排气管结构，当阀门处于连通状态时，两个气缸组的排气管路之间互相连通，即两个气缸组之间的排气管路互相贯通，每个气缸的排气管路与两段定压脉冲排气管均连通，从而起到扩大排气管路整体容积的效果，以达到稳压的作用。In the composite exhaust pipe structure provided by this application, when the valves are in a connected state, the exhaust pipes of the two cylinder groups communicate with each other, that is, the exhaust pipes between the two cylinder groups communicate with each other, and the exhaust pipes of each cylinder The exhaust pipeline is connected with the two sections of constant-pressure pulse exhaust pipes, so as to expand the overall volume of the exhaust pipeline to achieve the effect of stabilizing the pressure.
而当阀门处于关闭状态时，两个气缸组的排气管路之间断开，每个气 缸组对应一个定压脉冲排气管，每段排气管形成几个连续脉冲波直接进入增压器，节流损失小，且加强缸内扫气，增大进气量，使该工况具有更高的扭矩储备能力。And when the valve is in the closed state, the exhaust pipes of the two cylinder groups are disconnected, each cylinder The cylinder group corresponds to a constant-pressure pulse exhaust pipe, each section of the exhaust pipe forms several continuous pulse waves directly into the supercharger, the throttling loss is small, and the scavenging in the cylinder is strengthened to increase the intake air volume, making this working condition Has a higher torque reserve capability.
因此，这种复合排气管结构，可通过令阀门在连通状态以及关闭状态之间切换，来适用于各种工况下发动机不同的性能需求。Therefore, this composite exhaust pipe structure can be adapted to different performance requirements of the engine under various working conditions by switching the valve between the connected state and the closed state.
可选地，阀门将机体的一列气缸平均分成两个气缸组，每个气缸组中的气缸的个数相同。Optionally, the valve divides a row of cylinders of the machine body into two cylinder groups equally, and the number of cylinders in each cylinder group is the same.
可选地，复合排气管结构还包括驱动装置；驱动装置设置为控制阀门在连通状态以及关闭状态之间切换。Optionally, the composite exhaust pipe structure further includes a driving device; the driving device is configured to control the valve to switch between a connected state and a closed state.
可选地，驱动装置为电控单元，阀门为电磁阀；电控单元设置为获取实时工况的增压比情况，且当增压比较高时，电控单元控制电磁阀打开，以令电磁阀处于连通状态；以及当增压比较低时，电控单元控制电磁阀关闭，以令电磁阀切换至关闭状态。Optionally, the driving device is an electronic control unit, and the valve is an electromagnetic valve; the electronic control unit is set to obtain the boost ratio of the real-time working condition, and when the boost ratio is high, the electronic control unit controls the solenoid valve to open, so that the electromagnetic The valve is in a connected state; and when the boost pressure is relatively low, the electronic control unit controls the solenoid valve to close, so that the solenoid valve switches to the closed state.
可选地，每个增压器均包括压气机以及与压气机连通的涡轮机，两个定压脉冲排气管分别与对应两个涡轮机连接。Optionally, each supercharger includes a compressor and a turbine connected to the compressor, and the two constant-pressure pulse exhaust pipes are respectively connected to the corresponding two turbines.
可选地，复合排气管结构还包括中冷器；两个增压器的压气机分别与中冷器连通。Optionally, the composite exhaust pipe structure further includes an intercooler; the compressors of the two superchargers are respectively communicated with the intercooler.
一实施例提供一种发动机排气系统，包括机体以及上述的任一种复合排气管结构，复合排气管结构安装于机体的一列气缸上。An embodiment provides an engine exhaust system, including a machine body and any composite exhaust pipe structure described above, where the composite exhaust pipe structure is installed on a row of cylinders of the machine body.
附图说明Description of drawings
图1为本申请一实施例提供的复合排气管结构安装于机体的一列气缸上的结构示意图。Fig. 1 is a structural schematic diagram of a composite exhaust pipe structure provided by an embodiment of the present application installed on a row of cylinders of a machine body.
图标：1-阀门；2-定压脉冲排气管；3-增压器；4-压气机；5-涡轮机；6-中冷器，7-排气管路。Icons: 1-valve; 2-constant pressure pulse exhaust pipe; 3-supercharger; 4-compressor; 5-turbine; 6-intercooler, 7-exhaust pipeline.
具体实施方式Detailed ways
图1为本申请一实施例提供的复合排气管结构安装于机体的一列气缸上的结构示意图，如图1所示，本申请实施例提供的复合排气管结构，包括阀门1、两个定压脉冲排气管2以及两个增压器3；其中，阀门1设置于一列气缸的排气管路7上，且阀门1将机体的一列气缸分成两个气缸组， 且每个气缸组对应一个定压脉冲排气管2；两个定压脉冲排气管2分别与两个增压器3连接、且一一对应设置；阀门1能够在连通状态以及关闭状态之间切换；当阀门1处于连通状态时，两个气缸组之间的排气管路7互相连通；当阀门1处于关闭状态时，两个气缸组之间的排气管路7断开。Fig. 1 is a structural schematic diagram of a composite exhaust pipe structure provided by an embodiment of the application installed on a row of cylinders of the body. As shown in Fig. 1, the composite exhaust pipe structure provided by the embodiment of the application includes a valve 1, two Constant pressure pulse exhaust pipe 2 and two superchargers 3; wherein, valve 1 is set on the exhaust pipeline 7 of a row of cylinders, and valve 1 divides a row of cylinders of the body into two cylinder groups, And each cylinder group corresponds to a constant-pressure pulse exhaust pipe 2; two constant-pressure pulse exhaust pipes 2 are respectively connected to two superchargers 3, and are arranged in one-to-one correspondence; the valve 1 can be connected between the connected state and the closed state Switch between; when the valve 1 is in the connected state, the exhaust pipeline 7 between the two cylinder groups is connected to each other; when the valve 1 is in the closed state, the exhaust pipeline 7 between the two cylinder groups is disconnected.
本实施例提供的复合排气管结构，当阀门1处于连通状态时，两个气缸组之间的排气管路7互相连通，即两个气缸组之间的排气管路7互相贯通，每个气缸的排气管路7与两个定压脉冲排气管2均连通，从而起到扩大排气管路7整体容积的效果，以达到稳压的作用。In the composite exhaust pipe structure provided in this embodiment, when the valve 1 is in a connected state, the exhaust pipelines 7 between the two cylinder groups communicate with each other, that is, the exhaust pipelines 7 between the two cylinder groups communicate with each other, The exhaust pipeline 7 of each cylinder communicates with the two constant-pressure pulse exhaust pipes 2, so as to expand the overall volume of the exhaust pipeline 7 to achieve the effect of stabilizing the pressure.
而当阀门1处于关闭状态时，两个气缸组之间的排气管路7断开，每个气缸组对应一个定压脉冲排气管2，每段排气管形成几个连续脉冲波直接进入增压器3，节流损失小，且加强缸内扫气，增大进气量，使该工况具有更高的扭矩储备能力。And when the valve 1 is in the closed state, the exhaust pipeline 7 between the two cylinder groups is disconnected, and each cylinder group corresponds to a constant pressure pulse exhaust pipe 2, and each section of the exhaust pipe forms several continuous pulse waves directly Entering the supercharger 3, the throttling loss is small, and the scavenging in the cylinder is strengthened to increase the intake air volume, so that this working condition has a higher torque reserve capacity.
因此，这种复合排气管结构，可通过令阀门1在连通状态以及关闭状态之间切换，来适用于各种工况下发动机不同的性能需求。Therefore, this composite exhaust pipe structure can be adapted to different performance requirements of the engine under various working conditions by switching the valve 1 between the connected state and the closed state.
作为一种可选的实施例，阀门1将机体的一列气缸平均分成两个气缸组，每个气缸组中的气缸的个数相同。As an optional embodiment, the valve 1 divides a row of cylinders of the machine body into two cylinder groups equally, and the number of cylinders in each cylinder group is the same.
本实施例中，参考图1，图1中以V12发动机为例进行说明，V12发动机的每列气缸个数为六个，则将阀门1设置在气缸③和气缸④之间；如此，可保证一列气缸被阀门1均匀分成两个气缸组，每个气缸组都具有三个气缸，从而使得当阀门1处于关闭状态时，每个气缸组对应的排气管路7的容积相同，不会出现排气管路7的容积过大或过小的情况，从而进一步保障了复合排气管结构的工作效率。In this embodiment, with reference to Fig. 1, the V12 engine is taken as an example in Fig. 1 for illustration, the number of cylinders in each column of the V12 engine is six, and the valve 1 is arranged between the cylinder ③ and the cylinder ④; thus, it can be ensured A row of cylinders is evenly divided into two cylinder groups by the valve 1, and each cylinder group has three cylinders, so that when the valve 1 is in the closed state, the volume of the exhaust pipeline 7 corresponding to each cylinder group is the same, and there will be no If the volume of the exhaust pipeline 7 is too large or too small, the working efficiency of the composite exhaust pipe structure is further guaranteed.
作为一种可选的实施例，复合排气管结构还包括驱动装置；驱动装置设置为控制阀门1在连通状态以及关闭状态之间切换。As an optional embodiment, the composite exhaust pipe structure further includes a driving device; the driving device is configured to control the switching of the valve 1 between the connected state and the closed state.
作为一种可选的实施例，驱动装置为电控单元，阀门1为电磁阀；电控单元设置为获取实时工况的增压比情况，且当增压比较高时，控制电磁阀打开，以令电磁阀处于连通状态；以及当增压比较低时，控制电磁阀关闭，以令电磁阀切换至关闭状态。As an optional embodiment, the driving device is an electronic control unit, and the valve 1 is a solenoid valve; the electric control unit is set to obtain the boost ratio of the real-time working condition, and when the boost ratio is relatively high, the solenoid valve is controlled to open, so that the solenoid valve is in the connected state; and when the boost pressure is relatively low, the solenoid valve is controlled to be closed, so that the solenoid valve is switched to the closed state.
本实施例中，当增压比较高时，电控单元控制电磁阀打开，以起到扩大排气管路整体容积的效果，以达到稳压的作用；当增压比较低时，电控 单元控制电磁阀关闭，以降低节流损失，且加强缸内扫气，增大进气量，使低增压比工况具有更高的扭矩储备能力；当电磁阀打开或关闭后，具体的工作过程与上述的相同，不再赘述。In this embodiment, when the boost pressure is relatively high, the electronic control unit controls the solenoid valve to open to expand the overall volume of the exhaust pipeline to achieve the effect of stabilizing the pressure; when the boost pressure is relatively low, the electronic control unit The unit controls the solenoid valve to close to reduce throttling loss, and strengthen the scavenging in the cylinder to increase the intake air volume, so that the low boost ratio working condition has a higher torque reserve capacity; when the solenoid valve is opened or closed, the specific The working process is the same as above and will not be repeated.
因此，电控单元和电磁阀的设置，可以根据增压比的实际情况来自动切换电磁阀的状态(连通状态或关闭状态)，从而适用于需求性能不同的工况。Therefore, the setting of the electronic control unit and the solenoid valve can automatically switch the state of the solenoid valve (connected state or closed state) according to the actual situation of the boost ratio, so that it is suitable for working conditions with different performance requirements.
作为一种可选的实施例，每个增压器3包括压气机4以及与压气机4连通的涡轮机5，两个定压脉冲排气管2与对应两个涡轮机5连接。As an optional embodiment, each supercharger 3 includes a compressor 4 and a turbine 5 communicating with the compressor 4 , and two constant-pressure pulse exhaust pipes 2 are connected to corresponding two turbines 5 .
本实施例中，涡轮机5的喷嘴环能够实现定压全周进气，从而提高进气效率、且对每个气缸排气的干扰较小，从而能够减少泵气损失，提高热效率，降低油耗。In this embodiment, the nozzle ring of the turbine 5 can realize constant-pressure full-circle air intake, thereby improving the intake efficiency, and has less interference with the exhaust of each cylinder, thereby reducing pumping loss, improving thermal efficiency, and reducing fuel consumption.
继续参考图1，作为一种可选的实施例，复合排气管结构还包括中冷器6；中冷器6与两个增压器3连通，具体的，两个增压器3的压气机4分别与中冷器6连通。Continuing to refer to FIG. 1 , as an optional embodiment, the composite exhaust pipe structure also includes an intercooler 6; the intercooler 6 communicates with the two superchargers 3, specifically, the compressed air of the two superchargers 3 Machines 4 communicate with intercoolers 6 respectively.
本实施例中，中冷器6能够起到降低进气温度的作用、同时减少燃料消耗、且能够改善增压器3匹配及适应性。In this embodiment, the intercooler 6 can reduce the intake air temperature, reduce fuel consumption, and improve the matching and adaptability of the supercharger 3 .
本申请实施例还提供了一种发动机排气系统，包括机体以及上述的任一种复合排气管结构，复合排气管结构安装于及机体的一列气缸上。The embodiment of the present application also provides an engine exhaust system, including a body and any composite exhaust pipe structure described above, and the composite exhaust pipe structure is installed on a row of cylinders of the body.
本实施例中，发动机排气系统的有益效果与上述的任一种复合排气管结构的有益效果相同，不再赘述。 In this embodiment, the beneficial effect of the engine exhaust system is the same as that of any composite exhaust pipe structure described above, and will not be repeated here.

Claims (7)

  1. 一种复合排气管结构，对应于机体的一列气缸设置，所述复合排气管结构包括阀门(1)、两个定压脉冲排气管(2)以及两个增压器(3)；其中，A composite exhaust pipe structure, which is arranged corresponding to a row of cylinders of the body, and the composite exhaust pipe structure includes a valve (1), two constant-pressure pulse exhaust pipes (2) and two superchargers (3); in,
    所述阀门(1)设置于所述一列气缸的排气管路(7)上，且所述阀门(1)将机体的一列气缸分成两个气缸组，且每个气缸组对应一个所述定压脉冲排气管(2)；The valve (1) is arranged on the exhaust pipeline (7) of the row of cylinders, and the valve (1) divides the row of cylinders of the body into two cylinder groups, and each cylinder group corresponds to one of the fixed cylinders. Pressure pulse exhaust pipe (2);
    所述两个定压脉冲排气管(2)分别与所述两个增压器(3)连接、且一一对应设置；The two constant-pressure pulse exhaust pipes (2) are respectively connected to the two superchargers (3) and arranged in one-to-one correspondence;
    所述阀门(1)设置为能够在连通状态以及关闭状态之间切换；当所述阀门(1)处于连通状态时，所述两个气缸组之间的排气管路(7)互相连通；当所述阀门(1)处于关闭状态时，所述两个气缸组之间的排气管路(7)断开。The valve (1) is set to be switchable between a connected state and a closed state; when the valve (1) is in the connected state, the exhaust pipelines (7) between the two cylinder groups are connected to each other; When the valve (1) is in the closed state, the exhaust pipeline (7) between the two cylinder groups is disconnected.
  2. 根据权利要求1所述的复合排气管结构，其中，所述阀门(1)将机体的一列气缸平均分成两个气缸组，每个气缸组中的气缸的个数相同。The composite exhaust pipe structure according to claim 1, wherein the valve (1) divides a row of cylinders of the machine body into two cylinder groups equally, and the number of cylinders in each cylinder group is the same.
  3. 根据权利要求1所述的复合排气管结构，还包括驱动装置；The composite exhaust pipe structure according to claim 1, further comprising a driving device;
    所述驱动装置设置为控制所述阀门(1)在所述连通状态以及所述关闭状态之间切换。The driving device is configured to control the valve (1) to switch between the communicating state and the closing state.
  4. 根据权利要求3所述的复合排气管结构，其中，所述驱动装置为电控单元，所述阀门(1)为电磁阀；所述电控单元设置为：The composite exhaust pipe structure according to claim 3, wherein the driving device is an electric control unit, and the valve (1) is a solenoid valve; the electric control unit is configured as:
    获取实时工况的增压比情况，且当增压比较高时，控制所述电磁阀打开，以令所述电磁阀处于连通状态；以及当增压比较低时，控制所述电磁阀关闭，以令所述电磁阀切换至关闭状态。Acquire the boost ratio of the real-time working condition, and when the boost ratio is relatively high, control the solenoid valve to open so that the solenoid valve is in a connected state; and when the boost ratio is low, control the solenoid valve to close, To make the electromagnetic valve switch to the closed state.
  5. 根据权利要求1-4任一项所述的复合排气管结构，其中，每个增压器(3)均包括压气机(4)以及与所述压气机(4)连通的涡轮机(5)，所述两个定压脉冲排气管(2)分别与对应的所述两个涡轮机(5)连接。The composite exhaust pipe structure according to any one of claims 1-4, wherein each supercharger (3) includes a compressor (4) and a turbine (5) communicated with the compressor (4) , the two constant-pressure pulse exhaust pipes (2) are respectively connected to the corresponding two turbines (5).
  6. 根据权利要求5所述的复合排气管结构，其中，还包括中冷器(6)，所述两个增压器(3)的所述压气机(4)分别与所述中冷器(6)连通。The composite exhaust pipe structure according to claim 5, further comprising an intercooler (6), the compressors (4) of the two superchargers (3) are respectively connected to the intercooler ( 6) Connectivity.
  7. 一种发动机排气系统，包括机体以及如权利要求1-6任一项所述的复合排气管结构，所述复合排气管结构安装于所述机体的一列气缸上。 An engine exhaust system, comprising a machine body and the compound exhaust pipe structure according to any one of claims 1-6, the compound exhaust pipe structure being installed on a row of cylinders of the machine body.
PCT/CN2023/076379 2022-03-04 2023-02-16 Combined exhaust pipe structure and engine exhaust system WO2023165337A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114607497A (en) * 2022-03-04 2022-06-10 潍柴动力股份有限公司 Composite exhaust pipe structure and engine exhaust system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1164018A (en) * 1967-07-11 1969-09-10 Goetaverken Ab Improvements in or relating to Turbo-Driven Superchargers for Two-Stroke I.C. Engines
CN205297731U (en) * 2015-11-26 2016-06-08 潍柴动力股份有限公司 Engine supercharging system
CN107435595A (en) * 2016-05-26 2017-12-05 长城汽车股份有限公司 Engine system and vehicle
CN109653886A (en) * 2018-12-05 2019-04-19 汽解放汽车有限公司 A kind of engine exhaust heat riser
CN215633312U (en) * 2021-04-14 2022-01-25 潍柴动力股份有限公司 Exhaust pressurization system of multi-cylinder engine and multi-cylinder engine
CN114607497A (en) * 2022-03-04 2022-06-10 潍柴动力股份有限公司 Composite exhaust pipe structure and engine exhaust system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201265453Y (en) * 2008-10-23 2009-07-01 上海交通大学 Adjustable impulse turbocharging apparatus
CN101413430B (en) * 2008-11-20 2012-01-04 上海交通大学 Supercharging mode-adjustable turbocharging system
CN101672215A (en) * 2009-09-30 2010-03-17 上海交通大学 Turbine pressurization system with changeable exhausting circulation path
CN201517445U (en) * 2009-09-30 2010-06-30 上海交通大学 Turbo-charging device with adjustable exhaust flow path
CN102418587A (en) * 2011-10-28 2012-04-18 上海交通大学 Variable geometry exhaust pipe turbocharging system
CN102425488B (en) * 2011-10-31 2013-02-27 上海交通大学 Adjustable two-stage supercharging sequential system applied to V-shaped diesel engine
CN104879209B (en) * 2015-03-27 2017-11-03 中国北方发动机研究所(天津) A kind of engine level pressure/pulse exhaust conversion equipment
CN206830279U (en) * 2017-02-09 2018-01-02 潍柴动力股份有限公司 Pulse blast pipe and the diesel engine for being provided with the pulse blast pipe
CN206617219U (en) * 2017-02-09 2017-11-07 潍柴动力股份有限公司 Pulse adjustable row tracheae and Diesel engine
CN108167065A (en) * 2017-12-26 2018-06-15 潍柴动力股份有限公司 A kind of exhaust system of multicylinder engine
CN208900184U (en) * 2018-09-30 2019-05-24 潍柴动力股份有限公司 Engine exhaust system and engine
CN214533326U (en) * 2021-01-04 2021-10-29 潍柴动力股份有限公司 Engine and vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1164018A (en) * 1967-07-11 1969-09-10 Goetaverken Ab Improvements in or relating to Turbo-Driven Superchargers for Two-Stroke I.C. Engines
CN205297731U (en) * 2015-11-26 2016-06-08 潍柴动力股份有限公司 Engine supercharging system
CN107435595A (en) * 2016-05-26 2017-12-05 长城汽车股份有限公司 Engine system and vehicle
CN109653886A (en) * 2018-12-05 2019-04-19 汽解放汽车有限公司 A kind of engine exhaust heat riser
CN215633312U (en) * 2021-04-14 2022-01-25 潍柴动力股份有限公司 Exhaust pressurization system of multi-cylinder engine and multi-cylinder engine
CN114607497A (en) * 2022-03-04 2022-06-10 潍柴动力股份有限公司 Composite exhaust pipe structure and engine exhaust system

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