WO2022089151A1 - 接口管、发动机组件及车辆 - Google Patents

接口管、发动机组件及车辆 Download PDF

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Publication number
WO2022089151A1
WO2022089151A1 PCT/CN2021/122137 CN2021122137W WO2022089151A1 WO 2022089151 A1 WO2022089151 A1 WO 2022089151A1 CN 2021122137 W CN2021122137 W CN 2021122137W WO 2022089151 A1 WO2022089151 A1 WO 2022089151A1
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WO
WIPO (PCT)
Prior art keywords
pipe
exhaust gas
intake manifold
throttle valve
engine
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Application number
PCT/CN2021/122137
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English (en)
French (fr)
Inventor
赵振兴
石伟
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长城汽车股份有限公司
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Application filed by 长城汽车股份有限公司 filed Critical 长城汽车股份有限公司
Publication of WO2022089151A1 publication Critical patent/WO2022089151A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10157—Supercharged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M2026/001—Arrangements; Control features; Details
    • 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 invention relates to the technical field of engines, in particular to a mouthpiece, an engine assembly including the mouthpiece, and a vehicle.
  • the engine is provided with an intake manifold and an exhaust manifold, the intake manifold is connected with an intake pipeline, a throttle valve can be arranged on the intake pipeline, and the exhaust manifold is connected with an exhaust pipeline.
  • part of the exhaust gas in the exhaust manifold can be reintroduced into the intake pipeline through the exhaust gas recirculation pipeline to realize the exhaust gas recirculation.
  • the exhaust gas recirculation line can be bypassed on the intake line between the throttle valve and the intake manifold.
  • the throttle When the throttle is reduced, the engine speed is reduced, the pressure in the intake pipe is also reduced, and the pressure at the intake manifold remains unchanged. Therefore, reverse flow is likely to occur in the intake pipe, causing part of the exhaust gas to flow back to the throttle valve. middle. Part of the organic matter in the exhaust gas accumulates in the throttle valve and is easy to form gel, causing the throttle valve to be blocked.
  • the present invention proposes an interface pipe to solve the problem that the exhaust gas easily enters the throttle valve when the intake pipe of the intake manifold flows backwards, which leads to the easy formation of glue in the throttle valve.
  • An interface pipe wherein the interface pipe comprises a body pipe, an inlet end of the body pipe can be connected to a throttle valve, an outlet end of the body pipe can be connected to an intake manifold, and the body pipe is provided with
  • the body pipe can be communicated with the bypass hole of the exhaust gas recirculation pipeline, and the inside of the main body pipe is provided with a branch pipe which is communicated with the bypass hole and extends toward the outlet end.
  • the inside of the body tube is provided with a tongue extending from the side of the bypass hole close to the inlet end toward the outlet end, and the tongue extends at least a part of the body tube along the length direction. It is divided into the branch pipe and the main pipe which can communicate with the inlet end.
  • the body tube includes a tapered portion and a tapered portion arranged along a direction from the inlet end to the outlet end, and the tongue piece is arranged in the tapered portion.
  • the flow area of the main pipe is kept constant along the length direction.
  • branch pipe is an elbow connected to the bypass hole and extending toward the outlet end.
  • the inner surface of the branch pipe is provided with a tungsten carbide coating.
  • the inner surface of the body tube is provided with a tungsten carbide coating.
  • the thickness of the tungsten carbide coating is 1-25 microns.
  • the mouthpiece of the present invention has the following advantages:
  • the outlet of the branch pipe is extended to a position closer to the intake manifold, so that the exhaust gas can be made closer to the intake manifold, so as to avoid the reverse flow that occurs when the pressure at the throttle valve decreases, so that the exhaust gas enters the throttle valve. , this allows the distance between the throttle and the intake manifold to be reduced, which can better prevent gumming in the throttle.
  • Another object of the present invention is to provide an engine assembly to solve the problem that the exhaust gas easily enters the throttle valve when the intake line of the intake manifold flows backwards, which leads to the easy formation of glue in the throttle valve.
  • An engine assembly wherein the engine assembly includes an engine, an intake manifold and an exhaust manifold connected to the engine, a mouthpiece according to the above scheme, a throttle valve, and an exhaust gas recirculation line, the The interface pipe is connected between the intake manifold and the throttle valve, and the exhaust gas recirculation pipeline is communicated with the bypass hole.
  • the engine is a diesel engine.
  • Another object of the present invention is to provide a vehicle to solve the problem that the exhaust gas easily enters the throttle valve when the intake line of the intake manifold flows backwards, which leads to the occurrence of gumming in the throttle valve.
  • the technical scheme of the present invention is achieved in this way:
  • a vehicle wherein the vehicle is provided with an engine assembly as described above.
  • FIG. 1 is a front view of the mouthpiece according to the first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the mouthpiece according to the first embodiment of the present invention.
  • FIG. 3 is a bottom view of the mouthpiece according to the first embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the mouthpiece according to the second embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an engine assembly according to an embodiment of the present invention.
  • the present invention provides an interface pipe, wherein the interface pipe comprises a main body pipe 1, the inlet end of the main body pipe 1 can be connected to the throttle valve 12, and the outlet end of the main body pipe 1 can be connected to the intake manifold 9.
  • the body pipe 1 is provided with a bypass hole 2 which can be communicated with the exhaust gas recirculation pipeline 11, and the interior of the body pipe 1 is provided with a bypass hole 2 that communicates with the bypass hole 2 and extends toward the outlet end.
  • Branch pipe 4 is provided with a bypass hole 2 which can be communicated with the exhaust gas recirculation pipeline 11, and the interior of the body pipe 1 that communicates with the bypass hole 2 and extends toward the outlet end.
  • the engine 8 is provided with an intake manifold 9 and an exhaust manifold 10 , and an intake pipe 17 is connected to the intake manifold 9 , wherein a throttle valve 12 may be provided on the intake manifold 9 to
  • the exhaust manifold 10 can be connected to the exhaust gas recirculation line 11, and the exhaust gas recirculation line 11 can be bypassed on the intake line 17 between the throttle valve 12 and the intake manifold 9, so that part of the exhaust gas recirculation line 11 can be bypassed.
  • the exhaust gas is mixed with fresh air and introduced into the intake manifold 9 to realize the reuse of the exhaust gas.
  • an interface pipe is set between the throttle valve 12 and the intake manifold 9 to replace the original ordinary pipeline.
  • the interface pipe comprises a body pipe 1 and a branch pipe 4 arranged therein for conveying the exhaust gas from the exhaust gas recirculation line 11
  • the branch pipe 4 generally extends from the inlet end to the outlet end, which makes the outlet of the branch pipe 4 and the body pipe 1
  • the distance between the inlet end of the 12 and 12 increases, that is, the distance between the outlet of the branch pipe 4 and the throttle valve 12 is increased. Therefore, the exhaust gas can be prevented from entering the throttle valve 12 when the gas flows backwards, so as to prevent the exhaust gas from gluing in the throttle valve 12 and avoid gluing. Affect the normal use of the throttle valve 12 .
  • the structure of the branch pipe 4 can be realized in various forms, and two types of structures of the branch pipe will be described below.
  • the inside of the body tube 1 is provided with a tongue piece 3 extending from the side of the bypass hole 2 close to the inlet end toward the outlet end, the tongue piece 3 At least a part of the main body pipe 1 in the longitudinal direction is divided into the branch pipe 4 and the main pipe 5 which can communicate with the inlet end.
  • the bypass hole 2 is formed on the side of the main body pipe 1 and is relatively close to the inlet end, and the tongue 3 is located inside the main body pipe 1, which is connected between the bypass hole 2 and the inlet end.
  • the inner surface of the main body pipe 1 between the two parts extends to the outlet end, so that the branch pipe 4 is enclosed by the tongue piece 3 and part of the pipe wall of the main body pipe 1 .
  • the branch pipe 4 only occupies a part of the inner space of the main body pipe 1.
  • the tongue piece 3 divides the branch pipe 4, it also divides the main pipe 5.
  • the branch pipe 4 is used for conveying the exhaust gas
  • the main pipe 5 is used for conveying the air from the direction of the throttle valve 12. fresh air.
  • the tongue piece 3 can only divide a part of the length of the main body pipe 1, and there is a space in the main body pipe 1 to allow the mixing of the exhaust gas and the fresh air.
  • the body tube 1 includes a tapered portion 6 and a tapered portion 7 arranged along the direction from the inlet end to the outlet end, and the tongue piece 3 is arranged in the tapered portion 6 .
  • the body tube 1 includes two sections, one section is a gradually expanding tube, the other is a tapering tube, the bypass hole 2 is formed on the gradually expanding part 6, and the tongue piece 3 is also located in the gradually expanding section 6.
  • the structure in which the flow area is gradually increased can provide a sufficient flow area for the branch pipe 4 under the condition of ensuring the flow area of the main pipe 5 . As shown in FIG.
  • the cross section of the tapered portion 6 along the length direction is gradually changed from a circle to an ellipse, which realizes an increase in the flow area.
  • Both ends of the pipe 1 are round, which is convenient for connection with the throttle valve 12 and the intake manifold 9 .
  • the flow area of the main pipe 5 remains constant along the length direction.
  • the tongues 3 connected to the inner surface of the main pipe 1 are arranged obliquely, and the flow area of the branch pipe 4 increases gradually in the length direction; further, in order to ensure that the flow rate of the fresh air entering the main pipe 5 is Unaffected, the flow area of the main pipe 5 can be set to remain substantially constant, which can be achieved by arranging the body pipe 1 as part of the main pipe 5 and the shape of the tongues 3, which need to cooperate with each other to form
  • the main pipe 5 with a constant flow area in some embodiments, the tongue piece 3 may not be a flat plate; it may be difficult to ensure that the flow area of the main pipe 5 remains constant, that is, the tongue piece 3 and the body pipe 1
  • the shape design is difficult, therefore, in other embodiments, the flow area of the main pipe 5 can also be increased along the length direction, and the flow of the air in the main pipe 5 can also be prevented from being affected.
  • the branch pipe 4 is a bent pipe connected to the bypass hole 2 and extending toward the outlet end.
  • a relatively independent branch pipe 4 is formed in the main body pipe 1, which is connected to the bypass hole 2, and the branch pipe 4 is in a curved form so that its outlet faces the outlet end of the main body pipe 1.
  • the branch pipe 4 in this embodiment can also make the exhaust gas It is discharged at a position relatively closer to the intake manifold 9 and relatively far from the throttle valve 12 .
  • the inner surface of the branch pipe 4 is provided with a tungsten carbide coating.
  • the branch pipe 4 may include the tongue piece 3 and a part of the main body pipe 1, and thus can be provided on the surfaces of the tongue piece 3 and the main body pipe 1 that are in direct contact with the exhaust gas in the branch pipe 4 Tungsten carbide coating.
  • the tungsten carbide coating can catalyze the decomposition of some organic substances in the exhaust gas, and prevent these organic substances from forming glue on the inner surface of the branch pipe 4 .
  • the branch pipe 4 and the main body pipe 1 are relatively independent of each other, and a tungsten carbide coating may be provided on the inner surface of the branch pipe 4 part.
  • the inner surface of the body tube 1 is provided with a tungsten carbide coating.
  • a tungsten carbide coating may also be provided on the inner surface of the main body tube 1 other than a part of the branch tube 4 , which can also avoid the occurrence of gluing.
  • the thickness of the tungsten carbide coating is 1-25 microns.
  • the present invention also provides an engine assembly, wherein the engine assembly includes an engine 8, an intake manifold 9 and an exhaust manifold 10 connected to the engine 8, the interface pipe according to the above scheme, The throttle valve 12 and the exhaust gas recirculation pipeline 11 , the interface pipe is connected between the intake manifold 9 and the throttle valve 12 , and the exhaust gas recirculation pipeline 11 communicates with the bypass hole 2 .
  • the intake manifold 9 is connected with an intake pipeline 17, and the intake pipeline 17 is provided with a supercharger 14, an intercooler 13, a throttle valve 12 and an interface pipe; the exhaust manifold 19 is connected There are an exhaust gas pipeline 18 and an exhaust gas recirculation pipeline 11, and the exhaust gas recirculation pipeline 11 is provided with a condenser 15 and a control valve 16.
  • the distance between the throttle valve 12 and the intake manifold 9 is increased, especially the connection point between the exhaust gas recirculation line 11 and the intake line 17 is increased. Throttle 12 distance.
  • the distance between the discharge position of the exhaust gas in the body pipe 1 and the throttle valve 12 is compared with that of the bypass.
  • the distance between the hole 2 and the throttle valve 12 is increased, in particular, the exhaust gas can be formed into an air flow toward the outlet end, and the reverse flow is not easy to occur.
  • the distance between the intake manifold 9 and the throttle valve 12 can be reduced, for example, in some cases, the distance needs to be increased by 65mm in the prior art, while this solution only needs to increase the distance by 20mm distance, can effectively avoid the problem of sticking in the throttle valve 12.
  • the engine 8 is a diesel engine.
  • the engine assembly of this solution can be used in a diesel engine, that is, the interface pipe can be used in a diesel engine.
  • the interface pipe of this scheme can also be used in a fuel engine.
  • the present invention also provides a vehicle, wherein the vehicle is provided with the engine assembly described in the above solution.
  • a software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.
  • RAM random access memory
  • ROM read only memory
  • electrically programmable ROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

一种接口管、发动机组件及车辆，涉及发动机领域。接口管包括本体管（1），本体管（1）的进口端能够连接于节气门（12），本体管（1）的出口端能够连接于进气歧管（9），本体管（1）上设置有能够连通于废气再循环管路（11）的旁通孔（2），本体管（1）的内部设置有连通于旁通孔（2）并朝向出口端延伸的支管（4）。该接口管通过将支管（4）的出口延伸到更靠近进气歧管（9）的位置，可以使得排出的废气更靠近进气歧管（9），避免节气门（12）处压力降低时出现的倒流使得废气进入到节气门（12）中，从而允许节气门（12）与进气歧管（9）之间的距离减小，可以更好地防止节气门（12）中出现结胶。

Description

接口管、发动机组件及车辆
本申请要求于2020年10月30日提交中国专利局、申请号为202011190542.1、申请名称为“接口管、发动机组件及车辆”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。
技术领域
本发明涉及发动机的技术领域，特别涉及一种接口管，并且涉及一种包括该接口管的发动机组件，还涉及一种车辆。
背景技术
发动机上设置有进气歧管和排气歧管，进气歧管连接有进气管路，进气管路上可以设置节气门，排气歧管连接有排气管路。
其中，可以通过废气再循环管路将排气歧管中的部分废气重新导入到进气管路中，实现废气再循环。
废气再循环管路可以旁接于节气门与进气歧管之间的进气管路上。当油门减小时，发动机转速降低，进气管路中的压力也随之减小，进气歧管处压力保持不变，因此，进气管路中容易出现倒流，使得部分的废气倒流返回到节气门中。废气中的部分有机物在节气门中积累容易形成结胶，造成节气门堵塞。
发明内容
有鉴于此，本发明提出一种接口管，以解决进气歧管的进气管路在倒流时废气容易进入到节气门中导致节气门中容易出现结胶的问题。
为达到上述目的，本申请实施例提供如下技术方案：
一种接口管，其中，所述接口管包括本体管，所述本体管的进口端能够连接于节气门，所述本体管的出口端能够连接于进气歧管，所述本体管上设置有能够连通于废气再循环管路的旁通孔，所述本体管的内部设置有连通于所述旁通孔并朝向所述出口端延伸的支管。
进一步的，所述本体管的内部设置有从所述旁通孔的靠近所述进口端的一侧朝向所述出口端延伸的舌片，所述舌片将所述本体管沿长度方向的至少一部分分割为所述支管和能够与所述进口端连通的主管。
进一步的，所述本体管包括沿着从所述进口端朝向所述出口端方向排列的渐扩部和渐缩部，所述舌片设置在所述渐扩部中。
进一步的，所述主管的通流面积沿所述长度方向保持恒定。
进一步的，所述支管为连接于所述旁通孔并朝向所述出口端延伸的弯管。
进一步的，所述支管的内表面设置有碳化钨涂层。
进一步的，所述本体管的内表面设置有碳化钨涂层。
进一步的，所述碳化钨涂层的厚度为1微米-25微米。
相对于现有技术，本发明所述的接口管具有以下优势：
本发明所述的接口管，支管的出口延伸到更靠近进气歧管的位置，可以使得排出的废气更靠近进气歧管，避免节气门处压力降低时出现的倒流使得废气进入到节气门中，这允许节气门与进气歧管之间的距离减小，可以更好地防止节气门中出现结胶。
本发明的另一目的在于提出一种发动机组件，以解决进气歧管的进气管路在倒流时废气容易进入到节气门中导致节气门中容易出现结胶的问题。
为达到上述目的，本发明的技术方案是这样实现的：
一种发动机组件，其中，所述发动机组件包括发动机、连接于所述发动机的进气歧管和排气歧管、根据以上方案所述的接口管、节气门以及废气再循环管路，所述接口管连接于所述进气歧管和所述节气门之间，所述废气再循环管路连通于所述旁通孔。
进一步的，所述发动机为柴油发动机。
所述发动机组件与上述接口管相对于现有技术所具有的优势相同，在此不再赘述。
本发明的另一目的在于提出一种车辆，以解决进气歧管的进气管路在倒流时废气容易进入到节气门中导致节气门中容易出现结胶的问题。为达到上述目的，本发明的技术方案是这样实现的：
一种车辆，其中，所述车辆设置有以上方案所述的发动机组件。
所述车辆与上述接口管相对于现有技术所具有的优势相同，在此不再赘述。
本发明的其它特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述 中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明第一种实施方式所述的接口管的主视图；
图2为本发明第一种实施方式所述的接口管的剖视图；
图3为本发明第一种实施方式所述的接口管的仰视图；
图4为本发明第二种实施方式所述的接口管的剖视图；
图5为本发明实施方式所述的发动机组件的结构示意图。
附图标记说明：
1-本体管，2-旁通孔，3-舌片，4-支管，5-主管，6-渐扩部，7-渐缩部，8-发动机，9-进气歧管，10-排气歧管，11-废气再循环管路，12-节气门，13-中冷器，14-增压器，15-冷凝器，16-控制阀，17-进气管路，18-排气管路。
具体实施方式
下面将参考附图并结合实施方式来详细说明本发明。
本发明提供了一种接口管，其中，所述接口管包括本体管1，所述本体管1的进口端能够连接于节气门12，所述本体管1的出口端能够连接于进气歧管9，所述本体管1上设置有能够连通于废气再循环管路11的旁通孔2，所述本体管1的内部设置有连通于所述旁通孔2并朝向所述出口端延伸的支管4。
如图5所示，发动机8上设置有进气歧管9和排气歧管10，进气管路17连接于进气歧管9，其中，进气歧管9上可以设置节气门12，以控制进气量，排气歧管10可以连接废气再循环管路11，废气再循环管路11可以旁接于节气门12和进气歧管9之间的进气管路17上，以将部分废气与新鲜空气混合并导入进气歧管9中，实现废气再利用。
当进气管路17的进气量突然减少时(例如在松油门时，发动机转速降低)，节气门12处的气压降低，进气歧管9上游部分的气压相对较高，将会出现朝向节气门12的倒流。
本方案中，在节气门12和进气歧管9之间设置了接口管，以代替原有的普通管路。其中，接口管包括本体管1以及设置在其中的用于输送来自废气再循环管路11的废气的支管4，支管4大致从进口端向出口端延伸，这使得支管4的出口与本体管1的进口端的距离增加，也就是增加了支管4的出口与节气门12 的距离，因此，可以防止气体倒流时废气进入到节气门12中，避免废气在节气门12中出现结胶，避免结胶影响节气门12的正常使用。
支管4的结构可以通过多种形式实现，以下将说明支管两种类型的结构。
根据本发明的第一种实施方式，所述本体管1的内部设置有从所述旁通孔2的靠近所述进口端的一侧朝向所述出口端延伸的舌片3，所述舌片3将所述本体管1沿长度方向的至少一部分分割为所述支管4和能够与所述进口端连通的主管5。如图1和图2所示，旁通孔2形成在本体管1的侧部，并相对地靠近进口端，舌片3位于本体管1的内部，其连接于旁通孔2与进口端之间的本体管1的内表面上，并且向出口端延伸，从而通过舌片3和本体管1的部分管壁围成了支管4。当然，支管4仅占用了本体管1内部空间的一部分，舌片3分割出支管4的同时，也分割出主管5，支管4用于输送废气，而主管5用于输送来自节气门12方向的新鲜空气。其中，舌片3可以仅仅分割本体管1的一部分长度，在本体管1中存在允许废气和新鲜空气混合的空间。
其中，所述本体管1包括沿着从所述进口端朝向所述出口端方向排列的渐扩部6和渐缩部7，所述舌片3设置在所述渐扩部6中。如图1和图2所示，本体管1包括两段结构，一段为渐扩的管，另一段为渐缩的管，旁通孔2形成在渐扩部6上，舌片3也位于渐扩部6中。在渐扩部6中，通流面积逐渐增加的结构可以在保证主管5的通流面积的情况下，为支管4提供足够的通流面积。如图3所示，渐扩部6沿长度方向的截面由圆形逐渐变化为椭圆形，实现了通流面积的增加，渐缩部7的截面可以由椭圆形渐缩过渡为圆形，本体管1的两端均为圆形，便于与节气门12和进气歧管9连接。
其中，所述主管5的通流面积沿所述长度方向保持恒定。如图2所示，连接于本体管1内表面的舌片3倾斜地设置，支管4的通流面积在长度方向上逐渐增加；更进一步地，为保证进入主管5中的新鲜空气的流速基本不受影响，主管5的通流面积可以设置为保持基本恒定，这可以通过设置本体管1作为主管5的部分和舌片3的形状来实现，本体管1和舌片3需要彼此配合以形成通流面积不变的主管5，在其中一些实施方式中，舌片3可以不是平板件；保证主管5的通流面积保持恒定的难度可能较大，也就是说舌片3与本体管1的形状设计难度较大，因此，在其他实施方式中，也可以使得主管5的通流面积沿所述长度方向增加， 同样可以避免空气在主管5中的流动受到影响。
根据本发明的第二种实施方式，如图4所示，所述支管4为连接于所述旁通孔2并朝向所述出口端延伸的弯管。本体管1中形成有相对独立的支管4，其连接于旁通孔2，并且支管4为弯曲形式，以使得其出口朝向本体管1的出口端，该实施方式中的支管4同样可以使得废气在相对更靠近进气歧管9而相对远离节气门12的位置排出。
可选择的，所述支管4的内表面设置有碳化钨涂层。如上所述，在第一实施方式的结构中，支管4可以包括舌片3和本体管1的一部分，因此可以在舌片3和本体管1的与支管4中的废气直接接触的表面上设置碳化钨涂层。碳化钨涂层可以与废气中的部分有机物的分解起到催化作用，避免这些有机物在支管4的内表面上形成结胶。在第二实施方式中，支管4与本体管1彼此相对独立，可以在支管4部分的内表面上设置碳化钨涂层。
另外，所述本体管1的内表面设置有碳化钨涂层。本体管1的内表面除了作为支管4的一部分的其他部分上也可以设置碳化钨涂层，同样可以避免出现结胶。
其中，所述碳化钨涂层的厚度为1微米-25微米。
另外，本发明还提供了一种发动机组件，其中，所述发动机组件包括发动机8、连接于所述发动机8的进气歧管9和排气歧管10、根据以上方案所述的接口管、节气门12以及废气再循环管路11，所述接口管连接于所述进气歧管9和所述节气门12之间，所述废气再循环管路11连通于所述旁通孔2。
其中，如图5所示，进气歧管9连接有进气管路17，进气管路17上设置有增压器14、中冷器13、节气门12和接口管；排气歧管19连接有排气管路18和废气再循环管路11，废气再循环管路11上设置有冷凝器15和控制阀16。
现有技术中，为了避免废气倒流进入到节气门12中，节气门12与进气歧管9之间的距离增加，特别是增加了废气再循环管路11与进气管路17的连接点与节气门12的距离。在本方案中，由于在节气门12和进气歧管9之间增加了接口管，在支管4的引导下，废气在本体管1中的排出位置与节气门12的距离相比于旁通孔2与节气门12的距离增加，特别是可以使得废气形成为朝向出口端的气流，不容易出现倒流。
由于采用了本方案的接口管，进气歧管9与节气门12之间的距离可以减小，例如，在一些情况下，现有技术中需要增加65mm的距离，而本方案只需要增加20mm的距离，可以有效地避免节气门12中出现结胶的问题。
可选择的，所述发动机8为柴油发动机。柴油发动机燃烧柴油产生的废气中存在容易结胶的有机成分，因此，本方案的发动机组件可以用于柴油发动机，即所述接口管可以用于柴油发动机，当然，为了避免出现废气倒流，在其他燃油发动机中也可以采用本方案的接口管。
另外，本发明还提供了一种车辆，其中，所述车辆设置有以上方案所述的发动机组件。
以上所述仅为本发明的较佳实施方式而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
专业人员还可以进一步意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的核心思想或范围的情况下，在 其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (11)

  1. 一种接口管，其特征在于，所述接口管包括本体管(1)，所述本体管(1)的进口端能够连接于节气门(12)，所述本体管(1)的出口端能够连接于进气歧管(9)，所述本体管(1)上设置有能够连通于废气再循环管路(11)的旁通孔(2)，所述本体管(1)的内部设置有连通于所述旁通孔(2)并朝向所述出口端延伸的支管(4)。
  2. 根据权利要求1所述的接口管，其特征在于，所述本体管(1)的内部设置有从所述旁通孔(2)的靠近所述进口端的一侧朝向所述出口端延伸的舌片(3)，所述舌片(3)将所述本体管(1)沿长度方向的至少一部分分割为所述支管(4)和能够与所述进口端连通的主管(5)。
  3. 根据权利要求2所述的接口管，其特征在于，所述本体管(1)包括沿着从所述进口端朝向所述出口端方向排列的渐扩部(6)和渐缩部(7)，所述舌片(3)设置在所述渐扩部(6)中。
  4. 根据权利要求3所述的接口管，其特征在于，所述主管(5)的通流面积沿所述长度方向保持恒定。
  5. 根据权利要求1所述的接口管，其特征在于，所述支管(4)为连接于所述旁通孔(2)并朝向所述出口端延伸的弯管。
  6. 根据权利要求1所述的接口管，其特征在于，所述支管(4)的内表面设置有碳化钨涂层。
  7. 根据权利要求6所述的接口管，其特征在于，所述本体管(1)的内表面设置有碳化钨涂层。
  8. 根据权利要求6或7所述的接口管，其特征在于，所述碳化钨涂层的厚度为1微米-25微米。
  9. 一种发动机组件，其特征在于，所述发动机组件包括发动机(8)、连接于所述发动机(8)的进气歧管(9)和排气歧管(10)、根据权利要求1-8中任意一项所述的接口管、节气门(12)以及废气再循环管路(11)，所述接口管连接于所述进气歧管(9)和所述节气门(12)之间，所述废气再循环管路(11)连通于所述旁通孔(2)。
  10. 根据权利要求9所述的发动机组件，其特征在于，所述发动机(8)为 柴油发动机。
  11. 一种车辆，其特征在于，所述车辆设置有权利要求9或10所述的发动机组件。
PCT/CN2021/122137 2020-10-30 2021-09-30 接口管、发动机组件及车辆 WO2022089151A1 (zh)

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