WO2019128241A1 - Egr混合调节装置及内燃机 - Google Patents

Egr混合调节装置及内燃机 Download PDF

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Publication number
WO2019128241A1
WO2019128241A1 PCT/CN2018/099162 CN2018099162W WO2019128241A1 WO 2019128241 A1 WO2019128241 A1 WO 2019128241A1 CN 2018099162 W CN2018099162 W CN 2018099162W WO 2019128241 A1 WO2019128241 A1 WO 2019128241A1
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Prior art keywords
egr
exhaust gas
air
air guiding
passage
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PCT/CN2018/099162
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English (en)
French (fr)
Inventor
钟跃兰
代子阳
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潍柴动力股份有限公司
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Priority to EP18894168.6A priority Critical patent/EP3734055B1/en
Publication of WO2019128241A1 publication Critical patent/WO2019128241A1/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
    • 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
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings 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
    • 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
    • F02M26/21—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 with EGR valves located at or near the connection 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
    • 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
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides

Definitions

  • the present invention relates to the field of internal combustion engines, and more particularly to an EGR hybrid adjusting device and an internal combustion engine.
  • EGR the full name of Exhaust Gas Recirculation, refers to exhaust gas recirculation, re-introducing exhaust gas from the engine into the intake pipe, mixing with fresh gas and entering the combustion chamber for combustion, which can effectively reduce engine NOx emissions.
  • EGR mixing uniformity directly affects the consistency and stability of combustion in each cylinder.
  • the design of the EGR mixer has always been a relatively complex component, both to solve the problem of uniformity, while at the same time ensuring sufficient flow capacity and reducing pressure loss.
  • the EGR valve used in the prior art is a butterfly valve or a poppet valve that is installed separately in the EGR circuit for controlling EGR flow.
  • Mixers need to be designed separately, and it is often difficult to balance the space, and at the same time, the design cost is high.
  • an object of the present invention to provide an EGR mixing adjustment apparatus to optimize a control structure of an EGR valve; the present invention also provides an internal combustion engine.
  • an EGR mixing adjustment apparatus includes an EGR pipe having a built-in EGR mixing chamber, and an exhaust gas intake passage communicating with the EGR mixing chamber is disposed on a sidewall of the EGR pipe;
  • An air guiding slider that blocks or opens the exhaust gas intake passage is disposed in the EGR tube along its axial direction, and further includes a driving device that drives the air guiding slider to slide to a predetermined opening degree.
  • the air guide slider includes an air guiding passage that communicates with the exhaust gas intake passage and the EGR mixing chamber, and blocks the exhaust air intake passage. structure.
  • the air guiding slider is an air guiding tube that is slip-fitted to an inner wall of the EGR pipe, and the air guiding channel and the blocking structure are respectively opened in the guide
  • the cylinder ends are axially on both ends of the cylinder wall.
  • an inner wall of the EGR pipe is provided with an exhaust gas guiding groove corresponding to a position of the exhaust gas intake passage around a circumferential direction thereof, a length of the air guiding passage and the exhaust gas guiding groove
  • the groove width is uniform; the air guiding passage includes a plurality of openings in the circumferential direction of the air guiding cylinder.
  • a plurality of the air guiding passages are evenly arranged around the cylinder wall of the air guiding cylinder.
  • the inner wall of the air guide cylinder is provided with a guide vane that protrudes inward in the radial direction of the air guide cylinder to guide the intake air of the air guide passage.
  • the plugging structure includes a reducing material groove that is circumferentially opened around the air guiding cylinder, and a groove width of the material reducing groove is consistent with a groove width of the exhaust gas guiding groove.
  • the EGR pipe includes an EGR main pipe disposed at one end thereof in the axial direction, an EGR main pipe of the erecting driving device, and an exhaust gas mixing pipe that is provided with the air guiding cylinder, and a diameter of the EGR main pipe It is the same as the inner diameter of the air guide.
  • the guide passage is disposed inside the slip direction of the air cylinder.
  • An internal combustion engine provided with an EGR mixing adjustment device as described in any one of the above.
  • the EGR mixing adjustment device comprises an EGR pipe with a built-in EGR mixing chamber, and an exhaust gas inlet passage connecting the EGR mixing chamber is opened on the side wall of the EGR pipe; the exhaust gas inlet passage is arranged along the axial direction of the EGR pipe
  • the air-conducting slider that is blocked or opened further includes a driving device that drives the air guiding slider to slide to a predetermined opening degree.
  • the EGR pipe is provided with an EGR mixing chamber in which fresh air and exhaust gas are mixed, and an exhaust gas intake passage is formed in the side wall of the EGR pipe to pass the exhaust gas into the EGR mixing chamber to be mixed with the fresh air that is introduced into the EGR pipe.
  • a gas guiding slider is arranged in the EGR pipe, and the air guiding slider can slide along the axial direction in the EGR pipe, and the exhaust gas inlet passage is blocked or opened during the sliding process, and the sliding of the air guiding slider is adjusted by the driving device.
  • the air guiding slider controls the opening degree of the exhaust gas inlet passage, integrates the exhaust gas and the fresh air into the EGR pipe, and controls the exhaust gas by the sliding device of the driving device to the sliding guide of the air guiding slider
  • the opening degree of the passage is realized, and the control of the exhaust gas flow is realized, so that the EGR hybrid adjusting device realizes the adjustment of the exhaust gas and the simplified structure at the same time, and realizes the optimal arrangement of the EGR valve.
  • Figure 1 is a front elevational view of an EGR mixing adjustment device provided by the present invention
  • Figure 2 is a cross-sectional view showing the structure of the EGR mixing adjustment device of Figure 3 in the longitudinal direction of A-A;
  • Figure 3 is a cross-sectional view taken along line B-B of Figure 2;
  • FIG. 4 is a schematic view showing an arrangement structure of an exhaust gas intake passage opening degree adjustment according to the present invention.
  • FIG. 5 is a schematic view showing the arrangement structure of the exhaust gas intake passage when the exhaust gas passage is completely opened.
  • FIG. 1 is a front view of an EGR hybrid adjusting device provided by the present invention
  • FIG. 2 is a cross-sectional structural view of the EGR longitudinal adjusting device of FIG. 1 in a longitudinal direction
  • FIG. 3 is a cross-sectional view of FIG. Cutaway view.
  • the present application provides an EGR mixing adjustment apparatus including an EGR pipe 1 having a built-in EGR mixing chamber 5, and an exhaust gas intake passage 2 communicating with the EGR mixing chamber 5 is provided on a side wall of the EGR pipe 1;
  • the EGR pipe 1 is provided with an EGR mixing chamber 5 in which fresh air and exhaust gas are mixed, and an exhaust gas intake passage is formed in a side wall of the EGR pipe to pass the exhaust gas into the EGR mixing chamber to be mixed with fresh air flowing into the EGR pipe.
  • a gas guiding slider 3 is disposed in the EGR pipe 1, and the air guiding slider 3 can slide along the axial direction in the EGR pipe 1, and the exhaust gas inlet passage 2 is blocked or opened during the sliding process, and the air guiding slider 3 is
  • the slippage is adjusted by the driving device 4, and the air guiding slider 3 controls the opening degree of the exhaust gas intake passage 2 during the slipping process, and integrates the exhaust gas and the fresh air into the EGR pipe 1 through the driving.
  • the device 4 controls the exhaust of the air guide slider 3 to control the exhaust gas to control the exhaust gas flow, and realizes the control of the exhaust gas flow, so that the EGR hybrid adjusting device simultaneously realizes the adjustment of the exhaust gas and simplifies the structure, and realizes the optimal arrangement of the EGR valve.
  • the air guide slider 3 includes a gas guiding passage 31 that communicates with the exhaust gas intake passage 2 and the EGR mixing chamber 5, and a blocking structure 32 that blocks the exhaust gas intake passage 2.
  • the air guiding slider 3 slides on the inner wall of the EGR pipe 1, and the exhaust gas inlet passage 2 is blocked during the sliding process, and the separate air guiding slider 3 can realize the opening degree control and sealing of the exhaust gas channel 2.
  • the direction control between the channel 2 and the EGR mixing chamber 5 optimizes the direction in which the exhaust gas mixes with the fresh air.
  • the intake air of the air guiding passage 31 can be disposed along the inner wall of the EGR mixing chamber 5, so that the intake air is spirally distributed, thereby improving Mix uniformity.
  • a guide rail for guiding the slip of the air guide slider 3 is simultaneously disposed in the EGR mixing chamber 5 to ensure the stability of the passage sealing structure of the air guide slider 3 during the slipping process.
  • the air guiding slider 3 is an air guiding cylinder that is slidably engaged with the inner wall of the EGR pipe 1, and the air guiding passage 31 and the blocking structure 32 are respectively opened on the cylinder walls at the axial ends of the air guiding cylinder 3, respectively. .
  • the air guiding slider 3 is blown by the exhaust gas and the fresh air during the sliding process in the EGR pipe 1.
  • the air guiding slider 3 is provided as an air guiding cylinder structure, and the air guiding cylinder
  • the outer diameter is matched with the inner diameter of the EGR pipe 1, and the air guiding passage 31 and the blocking structure 32 are respectively located at both ends of the air guiding cylinder, and the air guiding cylinder slides in the EGR pipe 1, when the air guiding passage 31 on the air guiding cylinder
  • the exhaust gas flows into the EGR mixing chamber 5 to be mixed with fresh air.
  • the outer wall of the air cylinder blocks the exhaust gas intake passage 2, and the exhaust gas cannot enter the EGR mixing chamber 5 by the air cylinder.
  • the driving device 4 drives the air guiding cylinder to slide in the EGR pipe 1.
  • the air intake passage 2 is in the air intake direction and is located at an intermediate position between the blocking structure 32 and the air guiding passage 31, a part of the exhaust gas can pass through the air guiding passage 31. The rest is blocked by the outer wall of the air guiding tube blocking structure 32, and cannot smoothly enter the EGR mixing chamber, thereby realizing the control of the opening of the air guiding channel.
  • FIG. 4 is a schematic view showing an arrangement structure of an exhaust gas intake passage opening degree adjustment according to the present invention
  • FIG. 5 is a schematic view showing an arrangement structure of the exhaust gas intake passage when the exhaust gas intake passage is completely opened.
  • the air guide cylinder slides to the bottom of the EGR pipe 1, and only a small portion of the air guiding passage 31 is opposite to the exhaust gas intake passage 2, and a small amount of exhaust gas can pass into the EGR pipe 1, and most of the exhaust gas is blocked by the outside of the air guiding tube blocking structure 32.
  • the sealing structure 32 completely blocks the exhaust gas passage 2, thereby preventing the exhaust gas from flowing back due to excessive air pressure of the fresh air.
  • the air guiding passage 31 is directly opposite to the exhaust air intake passage 2, and the exhaust gas flowing into the exhaust gas intake passage 2 can directly enter the EGR pipe 1, and at this time, the maximum exhaust gas intake amount is obtained, and the plugging structure 32 is extended. In the EGR pipe, the slip of the air guide is guided.
  • the inner wall of the EGR pipe 1 is provided with an exhaust gas guiding groove 15 corresponding to the position of the exhaust gas intake passage 2 around the circumferential direction thereof, and the length of the air guiding passage 31 coincides with the groove width of the exhaust gas guiding groove 15.
  • the air guiding passage 31 includes a plurality of uniformly arranged surrounding the cylinder wall of the air guiding cylinder.
  • the exhaust gas is sent to the EGR mixing chamber 5 by the exhaust gas intake passage 2, and is mixed with the fresh air introduced into the EGR pipe 1 through the air guiding passage 31, and flows in the axial direction along the EGR pipe 1 during the fresh air conveying, and the single direction is passed. It is difficult to ensure the uniformity of mixing of exhaust gas and air into the exhaust gas.
  • the exhaust gas guiding groove 15 is connected to the exhaust gas inlet passage 2 by opening the exhaust gas guiding groove 15 around the inner wall of the EGR pipe 1. After the exhaust gas is introduced, the exhaust gas is first filled in the exhaust gas guiding groove 15 to surround the gas guiding cylinder. Circle arrangement.
  • the air guiding passages 31 are provided in plurality, and one circumference is arranged around the circumference of the air guiding cylinder, so that the exhaust gas in the exhaust gas guiding groove 15 is fed in various directions in the circumferential direction of the EGR mixing chamber 5, and the air is in the process of circulating in the circumferential direction.
  • the direction is mixed with the exhaust gas in all directions to improve the uniformity.
  • the inner wall of the air guide cylinder is provided with guide vanes 34 which are inclined inwardly and radially inward of the air guide cylinder to guide the intake air of the air guide passage 31.
  • the guide vanes 34 are arranged obliquely in the radial direction of the air guide cylinder, and the exhaust gas entering by the air guide passages 31 is blown by the guide vanes 34 and blown to the inner wall of the air guide cylinder, each guide
  • the discharge vanes of the passages 31 are provided with guide vanes 34, so that the exhaust gas is spirally flowed from the outside to the inside in the radial direction of the air guide cylinder, and is mixed with the fresh air in a spirally disturbed manner to improve the mixing uniformity of the airflow in the air guide cylinder.
  • the plugging structure 32 includes a reducing material groove 33 extending around the circumference of the air guiding cylinder, and the groove width of the material reducing groove 33 coincides with the groove width of the exhaust gas guiding groove 15.
  • the air cylinder slides in the EGR pipe 1. Since the outer diameter of the air cylinder coincides with the inner diameter of the EGR pipe 1, the resistance between the air cylinder and the inner wall of the EGR cylinder 1 increases during the sliding of the air cylinder by the driving device 4.
  • the sealing structure 32 uses the air guiding cylinder to be away from the outer wall of one end of the air guiding passage 31, and the sealing length of the air guiding cylinder is set to be larger than the length of the exhaust gas for the passage 2, so that the passage of the exhaust gas can be avoided.
  • the groove side wall of the material reducing groove 33 is opposed to the inner wall of the EGR pipe 1, so that the air inlet passage of the exhaust gas can be blocked.
  • the width of the exhaust gas guiding groove 15 is the same as the length of the guiding passage 31, and the width of the reducing material groove 33 is set to coincide with the width of the exhaust gas guiding groove 15, and the outer wall of the air guiding tube can be divided by the guiding channel 31 and the blocking structure 32. It is set to a symmetrical structure to facilitate the control of the length of the sliding channel in the EGR pipe 1.
  • the width of the exhaust gas inlet passage 2 is set to be the same as the width of the exhaust gas guiding groove 15, so as to ensure the sealing performance of the airtight cylinder and the inner wall of the EGR pipe 1 in the ventilation process or the sealing process.
  • the EGR pipe 1 includes an end portion disposed at an axial direction thereof, an EGR main pipe 13 of the strut driving device, and an exhaust gas mixing pipe 14 of the set air guide cylinder, a pipe diameter of the EGR main pipe 13 and an inner diameter of the air guiding cylinder the same.
  • the EGR pipe 1 is provided with an EGR main pipe 13 and an exhaust gas mixing pipe 14, and an air outlet 12 of the EGR main pipe 13 is connected to an intake pipe of the internal combustion engine, and an intake port 11 of the exhaust gas mixing pipe 13 is connected to the air intake pipe, and the air cylinder is connected to the exhaust gas mixing pipe 14
  • the one side is installed, and the air cylinder is slipped in the EGR pipe 1, specifically, the exhaust gas mixing pipe 14, so that the diameter between the inner diameter of the exhaust gas mixing pipe 14 and the end portion of the air guiding tube is changed by the diameter of the inner wall of the air guiding tube. Avoid the impact of this pressure change on the combustion of the internal combustion engine.
  • the inner diameter of the air guiding pipe is set to be the same as the diameter of the EGR main pipe 13, controlled by the input amount of the exhaust gas and the fresh air, and the correction of the air flow by the EGR main pipe to avoid a sudden change of the air flow input into the internal combustion engine.
  • the guide passage 31 is disposed on the inner side of the air cylinder sliding direction.
  • the driving device is a motor disposed on the outer wall of the EGR main pipe, or is driven by a pneumatic device or a hydraulic driving structure to pull the air guiding tube to slide in the EGR pipe, and controls the sliding position of the air guiding tube through the driving device, that is, the air guiding channel is controlled to expose the exhaust gas guiding groove.
  • the inner width changes the flow area of the air guide passage to achieve accurate control of the intake air amount.
  • the present invention also provides an internal combustion engine in which the EGR mixing adjusting device as provided in the above embodiment is provided.
  • the advantageous effects of the internal combustion engine by the EGR mixing adjusting device can be referred to the above embodiment.

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

Abstract

一种EGR混合调节装置及具有上述EGR混合调节装置的内燃机，该EGR混合调节装置包括内置EGR混合腔(5)的EGR管(1)，EGR管(1)的侧壁上开设有连通EGR混合腔(5)的废气进气通道(2)；EGR管(1)内沿其轴向滑动布置有对废气进气通道(2)封堵或打开的导气滑块(3)，还包括驱动导气滑块(3)滑移至预定开度的驱动装置(4)。EGR管(1)通过废气进气通道(2)将废气通入到EGR混合腔(5)内，与通入EGR管(1)内的新鲜空气混合。导气滑块(3)可在EGR管(1)内沿其轴向滑移，对废气进气通道(2)进行封堵或开启，驱动装置(4)调节导气滑块(3)的位置对废气进气通道(2)的开度进行控制，通过将废气和新鲜空气的混合集成于EGR管(1)中，实现对废气的调节，并简化了结构，实现了EGR阀的优化布置。

Description

EGR混合调节装置及内燃机
本申请要求于2017年12月26日提交中国专利局、申请号为201711428746.2、发明名称为“EGR混合调节装置及内燃机”上述中国专利申请的优先权，其全部内容通过引用结合在上述申请中。
技术领域
本发明涉及内燃机技术领域，更具体地说，涉及一种EGR混合调节装置及内燃机。
背景技术
EGR，全称Exhaust Gas Recirculation，指废气再循环，将发动机排出的废气重新引入进气管，和新鲜气体混合后进入燃烧室进行燃烧，此举可有效降低发动机NOx排放。
采用EGR技术已经成为满足欧六和国六排放的必要解决措施，EGR混合均匀性直接影响各缸燃烧的一致性和稳定性。EGR混合器的设计一直是一个较为复杂的部件，既要解决均匀性的问题，同时又需要保证足够的流通能力，降低压力损失。
现有技术中采用的EGR阀，是蝶阀或者提升阀，在单独在EGR回路中安装，用于控制EGR流量。混合器需要单独设计，往往会比较难兼顾空间，同时，设计成本较高。
这里，应当指出的是，本部分中所提供的技术内容旨在有助于本领域技术人员对本发明的理解，而不一定构成现有技术。
发明内容
有鉴于此,本发明的目的是提供一种EGR混合调节装置，以优化EGR阀的控制结构；本发明还提供了一种内燃机。
根据本发明的一个方面，提供一种EGR混合调节装置，包括内置EGR混合腔的EGR管，所述EGR管的侧壁上开设有连通所述EGR混合腔的废气进气通道；
所述EGR管内沿其轴向滑动布置有对所述废气进气通道封堵或打开的导 气滑块，还包括驱动所述导气滑块滑移至预定开度的驱动装置。
优选地，在上述EGR混合调节装置中，所述导气滑块包括连通所述废气进气通道和所述EGR混合腔的导气通道，及对所述废气进气通道进行封堵的封堵结构。
优选地，在上述EGR混合调节装置中，所述导气滑块为与所述EGR管的内壁贴合滑移的导气筒，所述导气通道和所述封堵结构分别开设于所述导气筒轴向两端的筒壁上。
优选地，在上述EGR混合调节装置中，所述EGR管的内壁环绕其周向开设有与所述废气进气通道位置对应的废气导向槽，所述导气通道的长度与所述废气导向槽的槽宽一致；所述导气通道包括开设于所述导气筒周向的多个。
优选地，在上述EGR混合调节装置中，多个所述导气通道环绕所述导气筒的筒壁均匀布置。
优选地，在上述EGR混合调节装置中，所述导气筒的内壁设置有倾斜于所述导气筒的径向向内伸出，对所述导气通道的进气进行导向的导向叶片。
优选地，在上述EGR混合调节装置中，所述封堵结构包括环绕所述导气筒的周向开设的减材槽，所述减材槽的槽宽与所述废气导向槽的槽宽一致。
优选地，在上述EGR混合调节装置中，所述EGR管包括设置于其轴向的一端，架撑驱动装置的EGR主管，和套装所述导气筒的废气混合管，所述EGR主管的管径与所述导气筒的内径相同。
优选地，在上述EGR混合调节装置中，所述导向通道设置于所述导气筒滑移方向的内侧。
一种内燃机，其内设置有如上任意一项所述的EGR混合调节装置。
本发明提供的EGR混合调节装置，包括内置EGR混合腔的EGR管，EGR管的侧壁上开设有连通EGR混合腔的废气进气通道；EGR管内沿其轴向滑动布置有对废气进气通道封堵或打开的导气滑块，还包括驱动导气滑块滑移至预定开度的驱动装置。EGR管内设混合新鲜空气和废气的EGR混合腔，EGR管的侧壁上开设废气进气通道将废气通入到EGR混合腔内，与通入EGR管内的新鲜空气混合。
EGR管内设置导气滑块，导气滑块可在EGR管内沿其轴向滑移，滑移过程中对废气进气通道进行封堵或开启，导气滑块的滑移由驱动装置进行调节，滑 移的过程中导气滑块对废气进气通道的开度进行控制，通过将废气和新鲜空气的混合集成于EGR管中，并通过驱动装置对导气滑块的滑移驱动控制废气进行通道的开度，实现废气流量的控制，使得EGR混合调节装置同时实现对废气的调节和简化结构，实现了EGR阀的优化布置。
附图说明
通过以下参照附图对本发明实施例的描述，本发明的上述以及其它目的、特征和优点将更为清楚，在附图中：
图1为本发明提供的EGR混合调节装置的主视图；
图2为图3中EGR混合调节装置的A-A纵向的剖视图结构示意图；
图3为图2沿B-B方向的剖视图；
图4为本发明中废气进气通道开度调节时的布置结构示意图；
图5为本发明中废气进气通道完全开启时的布置结构示意图。
具体实施方式
以下基于实施例对本发明进行描述，但是本发明并不仅仅限于这些实施例。
如图1-图3所示，图1为本发明提供的EGR混合调节装置的主视图；图2为图1中EGR混合调节装置的A-A纵向的剖视图结构示意图；图3为图2沿B-B方向的剖视图。
本申请提供了一种EGR混合调节装置，包括内置EGR混合腔5的EGR管1，EGR管1的侧壁上开设有连通EGR混合腔5的废气进气通道2；EGR管1内沿其轴向滑动布置有对废气进气通道2封堵或打开的导气滑块3，还包括驱动导气滑块3滑移至预定开度的驱动装置4。EGR管1内设混合新鲜空气和废气的EGR混合腔5，EGR管的侧壁上开设废气进气通道将废气通入到EGR混合腔内，与通入EGR管内的新鲜空气混合。EGR管1内设置导气滑块3，导气滑块3可在EGR管1内沿其轴向滑移，滑移过程中对废气进气通道2进行封堵或开启，导气滑块3的滑移由驱动装置4进行调节，滑移的过程中导气滑块3对废气进气通道2的开度进行控制，通过将废气和新鲜空气的混合集成于EGR管1中，并通过驱动装置4对导气滑块3的滑移驱动控制废气进行通道的开度，实现废 气流量的控制，使得EGR混合调节装置同时实现对废气的调节和简化结构，实现了EGR阀的优化布置。
在本案一具体实施例中，导气滑块3包括连通废气进气通道2和EGR混合腔5的导气通道31，及对废气进气通道2进行封堵的封堵结构32。导气滑块3在EGR管1的内壁滑动，其滑移过程中对废气进气通道2进行封堵，单独的导气滑块3可实现对废气进行通道2的开度控制和封堵，然而无法对废气进气通道2输入的废气进气方向进行控制，通过在导气滑块3上开设与废气进气通道2位置对应的导气通道31，通过对导气通道31与废气进气通道2和EGR混合腔5之间进行方向的控制，可优化废气与新鲜空气混合的方向，可设置导气通道31的进气沿EGR混合腔5的内壁，使得进气呈螺旋状分布，提高混合均匀性。EGR混合腔5内同时设置对导气滑块3的滑移进行导向的导向轨道，保证导气滑块3在滑移过程中，对废气进行通道密封结构的稳定性。
在本案一具体实施例中，导气滑块3为与EGR管1的内壁贴合滑移的导气筒，导气通道31和封堵结构32分别开设于导气筒3轴向两端的筒壁上。导气滑块3在EGR管1内滑移过程中，受到废气和新鲜空气的吹送，为了保证导气滑块3滑动结构的稳定性，设置导气滑块3为导气筒结构，导气筒的外径与EGR管1的内径贴合，导气通道31和封堵结构32分别位于导气筒轴向的两端，通过导气筒在EGR管1内的滑移，当导气筒上导气通道31与废气进气通道2位置相对时，废气通入EGR混合腔5，与新鲜空气混合。导气筒滑移至封堵结构32的极限位置时，导气筒的外壁对废气进气通道2进行封堵阻挡，废气将不能由导气筒进入EGR混合腔5。驱动装置4驱动导气筒在EGR管1内滑移，当废气进气通道2的进气方向上，位于封堵结构32和导气通道31的中间位置时，一部分废气可通过导气通道31，其余受导气筒封堵结构32的外壁遮挡，不能顺利的进入EGR混合腔，从而实现了对导气通道开度的控制。
如图4和图5所示，图4为本发明中废气进气通道开度调节时的布置结构示意图；图5为本发明中废气进气通道完全开启时的布置结构示意图。
导气筒滑移至EGR管1的底部，导气通道31仅小部分与废气进气通道2相对，少量废气可通入EGR管1内，其余大部分废气受导气筒封堵结构32的外部阻挡。当然，也可以设置导气筒伸入EGR管1的底部时，封堵结构32完全对废气进行通道2进行阻挡，从而避免新鲜空气的气压过大造成废气回流。
图5中为导气通道31与废气进气通道2直接相对，通入废气进气通道2的废气可直接进入EGR管1内，此时获得最大的废气进气量，封堵结构32伸入EGR管内，对导气筒的滑移进行导向。
在本案一具体实施例中，EGR管1的内壁环绕其周向开设有与废气进气通道2位置对应的废气导向槽15，导气通道31的长度与废气导向槽15的槽宽一致。优选地，导气通道31包括环绕导气筒的筒壁均匀布置的多个。
废气由废气进气通道2送入EGR混合腔5，经导气通道31后与EGR管1内通入的新鲜空气混合，由于新鲜空气输送过程中沿EGR管1的轴向流动，单一方向通入废气难以保证废气与空气的混合均匀性。通过在EGR管1的内壁开设环绕其周向的废气导向槽15，废气导向槽15与废气进气通道2连通，则废气通入后，首先填充于废气导向槽15内，环绕导气筒的一圈布置。
将导气通道31设置多个，并环绕导气筒的周向布置一圈，使得废气导向槽15内的废气由EGR混合腔5周向的各个方向送入，空气流通过程中，在周向的各个方向均与废气进行扰动混合，从而提高提高均匀性。
在本案一具体实施例中，导气筒的内壁设置有倾斜于导气筒的径向向内伸出，对导气通道31的进气进行导向的导向叶片34。通过设置导向叶片34，导向叶片34沿导气筒的径向倾斜布置，则由导气通道31进入的废气，经导向叶片34的阻挡后，呈螺旋吹出状吹送到导气筒的内壁，每个导向通道31的排出口均设置导向叶片34，使得废气吹出后呈螺旋状由导气筒的径向由外向内流通，与新鲜空气呈螺旋扰动状相互混合，提高导气筒内气流的混合均匀性。
在本案一具体实施例中，封堵结构32包括环绕导气筒的周向开设的减材槽33，减材槽33的槽宽与废气导向槽15的槽宽一致。导气筒在EGR管1内滑移，由于导气筒的外径与EGR管1的内径一致，由驱动装置4驱动导气筒滑移过程中，导气筒与EGR筒1内壁之间的阻力增大。封堵结构32利用导气筒远离导气通道31一端的外壁，设置导气筒的封堵长度大于废气进行通道2的长度，即可避免废气的通入。通过在导气筒位于封堵结构的位置开设环绕其外周布置的减材槽33，利用减材槽33的槽侧壁与EGR管1的内壁相抵，即可实现对废气进气通道的封堵。
以上设置废气导向槽15的宽度与导向通道31的长度一致，设置减材槽33的宽度与废气导向槽15的宽度一致，则导气筒的外壁可由导向通道31和 封堵结构32的分型线设置为对称结构，便于EGR管1内滑移通道长度的控制。设置废气进气通道2的宽度与废气导向槽15的宽度一致，保证在通气过程或封堵过程，导气筒与EGR管1内壁的贴合位置对废气的密封性能。
在本案一具体实施例中，EGR管1包括设置于其轴向的一端，架撑驱动装置的EGR主管13，和套装导气筒的废气混合管14，EGR主管13的管径与导气筒的内径相同。内燃机进气过程中，需要保证进气压力的稳定性，保证内燃机的燃烧稳定。
将EGR管1设置EGR主管13段和废气混合管14，EGR主管13的出气口12与内燃机的进气管连接，废气混合管13的进气口11连接空气进气管，导气筒由废气混合管14一侧装入，由于导气筒在EGR管1，具体为废气混合管14内滑移，使得废气混合管14内内径与导气筒的端部之间由直径突变，通过控制导气筒的内壁厚度，避免该段气压变化对内燃机燃烧的影响。设置导气管的内径与EGR主管13的管径相同，通过废气和新鲜空气的输入量控制，和EGR主管对气流的矫正，避免输入内燃机内气流的突变。
在本案一具体实施例中，导向通道31设置于导气筒滑移方向的内侧。
驱动装置为设置于EGR主管外壁的电机，或者通过气动装置或液压驱动结构，拉动导气筒在EGR管内滑移，并通驱动装置控制导气筒的滑移位置，即控制导气通道露出废气导向槽内的宽度，改变导气通道的流通面积，实现对废气进气量的准确控制。通过设置具有滑移结构的EGR管和导气筒，使得二者对废气的流量控制可通过导气通道的开度，调节废气流通面积，实现零部件模块化设计，使得系统简化，结构紧凑，降低成本。
基于上述实施例中提供的EGR混合调节装置，本发明还提供了一种内燃机，其内设置有如上述实施例中提供的EGR混合调节装置。
由于该内燃机采用了上述实施例的EGR混合调节装置，所以该内燃机由EGR混合调节装置带来的有益效果请参考上述实施例。
以上所述仅为本发明的优选实施例，并不用于限制本发明，对于本领域技术人员而言，本发明可以有各种改动和变化。凡在本发明的精神和原理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。

Claims (10)

  1. 一种EGR混合调节装置，其特征在于，包括内置EGR混合腔的EGR管，所述EGR管的侧壁上开设有连通所述EGR混合腔的废气进气通道；
    所述EGR管内沿其轴向滑动布置有对所述废气进气通道封堵或打开的导气滑块，还包括驱动所述导气滑块滑移至预定开度的驱动装置。
  2. 根据权利要求1所述的EGR混合调节装置，其特征在于，所述导气滑块包括连通所述废气进气通道和所述EGR混合腔的导气通道，及对所述废气进气通道进行封堵的封堵结构。
  3. 根据权利要求2所述的EGR混合调节装置，其特征在于，所述导气滑块为与所述EGR管的内壁贴合滑移的导气筒，所述导气通道和所述封堵结构分别开设于所述导气筒轴向两端的筒壁上。
  4. 根据权利要求3所述的EGR混合调节装置，其特征在于，所述EGR管的内壁环绕其周向开设有与所述废气进气通道位置对应的废气导向槽，所述导气通道的长度与所述废气导向槽的槽宽一致；所述导气通道包括开设于所述导气筒周向的多个。
  5. 根据权利要求4所述的EGR混合调节装置，其特征在于，多个所述导气通道环绕所述导气筒的筒壁均匀布置。
  6. 根据权利要求3所述的EGR混合调节装置，其特征在于，所述导气筒的内壁设置有倾斜于所述导气筒的径向向内伸出，对所述导气通道的进气进行导向的导向叶片。
  7. 根据权利要求3所述的EGR混合调节装置，其特征在于，所述封堵结构包括环绕所述导气筒的周向开设的减材槽，所述减材槽的槽宽与所述废气导 向槽的槽宽一致。
  8. 根据权利要求3所述的EGR混合调节装置，其特征在于，所述EGR管包括设置于其轴向的一端，架撑驱动装置的EGR主管，和套装所述导气筒的废气混合管，所述EGR主管的管径与所述导气筒的内径相同。
  9. 根据权利要求8所述的EGR混合调节装置，其特征在于，所述导向通道设置于所述导气筒滑移方向的内侧。
  10. 一种内燃机，其特征在于，其内设置有如权利要求1-9中任意一项所述的EGR混合调节装置。
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Publication number Priority date Publication date Assignee Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636806A1 (de) * 1996-09-11 1998-03-12 Pierburg Ag Luftansaugrohr für Brennkraftmaschinen
KR20050060167A (ko) * 2003-12-16 2005-06-22 현대자동차주식회사 엔진의 이지알 믹서
EP1598543A1 (de) * 2004-05-18 2005-11-23 Pierburg GmbH Regelbare Zwei-Wege-Ventilvorrichtung
FR2894294B1 (fr) * 2005-12-01 2008-01-18 Renault Sas Dispositif de vanne de recyclage de gaz d'echappement
US20160153403A1 (en) * 2014-12-01 2016-06-02 Denso International America, Inc. Egr device having baffle and egr mixer for egr device
CN108180091A (zh) * 2017-12-26 2018-06-19 潍柴动力股份有限公司 Egr混合调节装置及内燃机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1266636B1 (it) * 1993-10-27 1997-01-09 Nuovo Pignone Spa Ugello principale perfezionato per telaio tessile ad aria
US20070256413A1 (en) * 2006-05-02 2007-11-08 Honeywell International, Inc. Variable geometry EGR mixer and system
CN202628319U (zh) * 2012-07-05 2012-12-26 东风汽车有限公司 一种用于车用发动机废气再循环（egr）的混合装置
CN103195947B (zh) * 2013-03-14 2015-08-12 山东大学 无级可调恒温混水阀
CN105626321A (zh) * 2016-03-22 2016-06-01 奇瑞汽车股份有限公司 一种汽油机egr混合器
KR101846651B1 (ko) * 2016-03-22 2018-04-06 현대자동차주식회사 가스 분배성을 향상한 ｅｇｒ 유량분배밸브 및 이를 적용한 배기가스재순환시스템

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636806A1 (de) * 1996-09-11 1998-03-12 Pierburg Ag Luftansaugrohr für Brennkraftmaschinen
KR20050060167A (ko) * 2003-12-16 2005-06-22 현대자동차주식회사 엔진의 이지알 믹서
EP1598543A1 (de) * 2004-05-18 2005-11-23 Pierburg GmbH Regelbare Zwei-Wege-Ventilvorrichtung
FR2894294B1 (fr) * 2005-12-01 2008-01-18 Renault Sas Dispositif de vanne de recyclage de gaz d'echappement
US20160153403A1 (en) * 2014-12-01 2016-06-02 Denso International America, Inc. Egr device having baffle and egr mixer for egr device
CN108180091A (zh) * 2017-12-26 2018-06-19 潍柴动力股份有限公司 Egr混合调节装置及内燃机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3734055A4

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