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WO2020125011A1 - Ensemble pont de soupape, système de freinage dans un cylindre et moteur - Google Patents

Ensemble pont de soupape, système de freinage dans un cylindre et moteur Download PDF

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Publication number
WO2020125011A1
WO2020125011A1 PCT/CN2019/097018 CN2019097018W WO2020125011A1 WO 2020125011 A1 WO2020125011 A1 WO 2020125011A1 CN 2019097018 W CN2019097018 W CN 2019097018W WO 2020125011 A1 WO2020125011 A1 WO 2020125011A1
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WO
WIPO (PCT)
Prior art keywords
assembly
piston
main piston
valve bridge
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/097018
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English (en)
Chinese (zh)
Inventor
王刚
许成
李栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Power Co Ltd
Original Assignee
Weichai Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weichai Power Co Ltd filed Critical Weichai Power Co Ltd
Publication of WO2020125011A1 publication Critical patent/WO2020125011A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type

Definitions

  • This document relates to the technical field of engines, for example, to a valve bridge assembly, and to an in-cylinder brake system including the valve bridge assembly, and an engine including the in-cylinder brake system.
  • the engine When the engine is doing positive work, the engine completes four working cycles of intake, compression, work and exhaust during the 360° rotation of the camshaft. At the end of the compression stroke, fuel is injected into the cylinder for combustion, and work is done externally during the subsequent expansion stroke.
  • the engine When the engine brakes, the engine needs to open the exhaust valve with a small lift (1-2mm) when the compression stroke is close to top dead center, driven by the engine brake device, to quickly release the compressed high-pressure gas in the cylinder
  • the pressure in the cylinder decreases rapidly to reduce the energy of the power stroke. Therefore, in the next power stroke, the engine basically does not work externally, thereby decelerating the engine and realizing in-cylinder braking.
  • the Chinese invention patent with application number 201510819033.3 and titled "Engine Exhaust Brake System” discloses a brake system.
  • the brake system mainly includes: camshaft, tappet, push rod, rocker arm shaft, exhaust rocker arm Assembly, sealing device, valve bridge assembly, exhaust valve and brake exhaust valve.
  • the valve bridge body of the valve bridge assembly is provided with a main piston close to the rocker shaft and a sub piston away from the rocker shaft in the length direction, and a brake exhaust valve is installed at the lower end of the sub piston.
  • the lubricating oil will pass from the rocker shaft to the rocker arm, along the rocker arm oil passage and ball pin assembly, and reach the main piston of the valve bridge assembly that is in contact with the elephant foot. At this time, the oil pressure will overcome the spring force in the main piston, and the brake pressure oil will enter the main piston.
  • the main piston When the entire main piston cavity is filled, the main piston will float up as a whole, and the pressure oil will enter the upper part of the auxiliary piston through the oil passage in the valve bridge; due to the installation, a certain gap is reserved between the exhaust rocker assembly and the valve bridge ( 3mm), the main piston floats up, driving the rocker arm assembly to rotate counterclockwise until the gap is eaten.
  • the main piston and the auxiliary piston in the entire valve bridge assembly are connected by pressure oil, and the oil drain hole is sealed by a sealing device.
  • the drive rocker arm rotates clockwise, and the main piston moves downward. Since the hydraulic connection can be regarded as a rigid connection, the downward movement of the main piston will drive the auxiliary piston to move downward, thus opening Brake the exhaust valve to achieve in-cylinder braking.
  • the rocker arm drives the main piston.
  • the main piston contacts the valve bridge, which drives the entire valve bridge to move downward.
  • the oil drain hole is separated from the sealing device, and the pressure oil flows out from the oil drain hole. This ensures that the brake exhaust valve lift during braking is the same as the non-brake exhaust valve lift.
  • the engine exhaust brake system has the following problems:
  • this article is to provide a valve bridge assembly that can greatly reduce the braking load during compression and release braking and improve the reliability of the valve train under braking conditions.
  • Another purpose of this article is to provide an in-cylinder brake system that includes the valve bridge assembly, and an engine that includes the in-cylinder brake system, which can greatly reduce the braking load and improve the braking system during the compression and release of braking.
  • valve bridge assembly includes: a valve bridge body, the valve bridge body is provided with a main piston assembly, a brake piston assembly and an oil discharge assembly,
  • the inner end of the valve bridge body is provided with a piston mounting hole
  • the piston mounting hole includes a main piston mounting hole and a brake piston mounting hole located below the main piston mounting hole and communicating with the main piston mounting hole
  • the outer end of the valve bridge body is provided with an oil discharge assembly installation hole
  • the valve bridge body is provided with a valve bridge oil passage communicating the piston installation hole and the oil discharge assembly installation hole;
  • the main piston assembly is installed in the main piston installation hole, the brake piston assembly is installed in the brake piston installation hole, and the oil discharge assembly is installed in the oil discharge assembly installation hole.
  • This article also provides an in-cylinder brake system, the in-cylinder brake system includes an exhaust rocker assembly and a valve bridge assembly, the valve bridge assembly becomes the valve bridge assembly of any one of the above;
  • the exhaust rocker assembly includes a rocker body, a rocker oil passage is provided inside the rocker body, and a ball pin assembly and an adjustment screw assembly are provided on the valve side of the rocker body;
  • the ball pin assembly includes a first elephant foot having a first ball groove, and a ball pin connected to the rocker body at one end and received in the first ball groove at the other end.
  • the ball pin assembly is provided with An oil passage of a ball pin assembly penetrating the ball pin and the first elephant foot and communicating with the rocker oil passage, the first elephant foot is kept in contact with the main piston assembly;
  • the adjustment screw assembly includes a second elephant foot having a second spherical groove, and an adjustment screw threadably connected to the rocker body and accommodated at one end in the second spherical groove. Keep the oil unloading assembly in contact.
  • This document also provides an engine including the in-cylinder braking system described above.
  • FIG. 1 is a schematic structural diagram of an in-cylinder braking system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of the exhaust rocker assembly in FIG. 1;
  • FIG. 3 is a schematic structural view of the valve bridge assembly in FIG. 1;
  • FIG. 4 is a schematic view of the structure of the valve bridge body in FIG. 3;
  • FIG. 5 is a schematic diagram of the structure of the main piston assembly in FIG. 3;
  • FIG. 6 is a schematic structural view of the brake piston in FIG. 3;
  • FIG. 7 is a top view of FIG. 6;
  • FIG. 8 is a schematic diagram of the structure of the brake piston elastic reset member in FIG. 3 abutting against the seat;
  • FIG. 9 is a top view of FIG. 8;
  • FIG. 10 is a schematic diagram of the installation of the oil unloading assembly and the valve bridge body in FIG. 3;
  • FIG. 11 is a schematic diagram of the structure of the executive pin in FIG. 10;
  • A- exhaust rocker assembly B- valve bridge assembly
  • This article provides a valve bridge assembly, which greatly reduces the braking load during the compression and release braking process and improves the reliability of the valve train under braking conditions.
  • This article also provides an in-cylinder brake system that includes the valve bridge assembly and an engine that includes the in-cylinder brake system. During the compression and release of the brake, the brake load is greatly reduced and the braking conditions are improved. The reliability of the lower gas distribution mechanism.
  • the end of the valve bridge body close to the rocker shaft is defined as the "inboard end”
  • the end of the valve bridge body away from the rocker shaft is defined as the “outboard end”.
  • an embodiment of the present invention provides a valve bridge assembly B.
  • the valve bridge assembly B includes: a valve bridge body 4, the valve bridge body 4 is provided with a main piston assembly 5, a brake piston assembly 6 and Unloading assembly 7.
  • the inner end of the valve bridge body 4 is provided with a piston mounting hole.
  • the piston mounting hole includes a main piston mounting hole 41 and is located below the main piston mounting hole 41 and communicates with the main piston mounting hole through the piston through the oil passage 42 41 is connected to the brake piston mounting hole 43, the outer end of the valve bridge body 4 is provided with an oil discharge assembly installation hole 44, the outer side of the oil discharge assembly installation hole 44 is provided with an exhaust valve installation hole 45, an exhaust valve installation hole 45 It is configured to install the exhaust valve 82.
  • the valve bridge body 4 is provided with a valve bridge oil passage 46 connecting the piston installation hole and the oil discharge assembly installation hole 44 in an optional manner.
  • the valve bridge oil passage 46 communicates with the brake piston installation hole 43.
  • the main piston assembly 5 is installed in the main piston installation hole 41
  • the brake piston assembly 6 is installed in the brake piston installation hole 43
  • the oil discharge assembly 7 is installed in the oil discharge assembly installation hole 44.
  • the brake components are integrated in the valve bridge body 4, and the inside brake exhaust valve 81 is opened, which greatly reduces the braking load and improves the reliability of the valve train under braking conditions.
  • the main piston assembly 5 includes: a main piston 51, a check valve assembly, and a main piston elastic return member 53.
  • the main piston 51 has a cylindrical shape, the lower end of the cylindrical main piston 51 is an open end, and the upper end is a closed end, and the closed end is provided with a main piston oil inlet 511.
  • a one-way valve assembly is provided in the inner cavity of the main piston 51, and the one-way valve assembly is configured to seal or open the main piston oil inlet 511.
  • the elastic reset member 53 of the main piston is arranged in the inner cavity of the main piston and is sleeved outside the check valve assembly.
  • the elastic reset member 53 of the main piston may be a spring or an elastic rubber.
  • the one-way valve assembly includes a one-way valve valve seat 542, a one-way valve elastic reset member 543 and a ball 541 disposed in the one-way valve valve seat 542.
  • the valve seat 542 of the check valve has a cylindrical shape with an open upper end. The open end of the valve seat 542 of the check valve extends outward with a cylinder rim 5422. The cylinder rim 5422 abuts against the inner side of the upper end of the main piston 51.
  • the seat 542 is provided with a check valve seat oil hole 5421; the ball 541 is configured to block the main piston oil inlet 511, and the check valve elastic return member 543 abuts the ball 541 and the lower end of the check valve seat 542 between.
  • the elastic return piece 543 of the one-way valve can be spring or rubber.
  • the main piston assembly 5 integrates a one-way valve to ensure the sealing reliability of the hydraulic oil.
  • the main piston assembly 5 further includes: a spacer 52, an outer periphery of the spacer 52 is provided with a spacer external thread, an inner periphery of the main piston 51 is provided with a main piston internal thread, and the spacer 52 passes through the main piston 51
  • the external thread of the spacer is threaded with the internal thread of the main piston, the upper end of the spacer 52 abuts the barrel edge 5422 of the check valve seat 542;
  • the elastic reset member 53 of the main piston is located between the spacer 52 and the check valve seat 542 ,
  • the main piston elastic return member 53 abuts between the cylinder edge 5422 of the check valve seat 542 and the bottom of the main piston mounting hole 41.
  • the brake piston assembly 6 includes: a brake piston 61, a brake piston elastic reset member abutment seat 63, and a brake piston elastic reset member 62.
  • the brake piston 61 has a stepped shaft shape with an upper size and a smaller size.
  • the stepped surface of the brake piston 61 forms a stepped surface of the brake piston.
  • the brake piston 61 is provided with a brake exhaust configured to install a brake exhaust valve 81 Door mounting hole 612.
  • the brake piston elastic return member abutment 63 is fixedly connected to the bottom of the valve bridge body 4 through a screw through mounting hole 632, and the brake piston elastic reset member abutment 63 is provided with a first stepped hole in the middle of the upper and lower 631, the step surface of the first step hole 631 forms a step surface of the first step hole, the inner diameter of the small hole of the first step hole 631 is larger than the outer diameter of the lower end of the brake piston 61, and does not affect the up and down movement of the brake piston 61; the elasticity of the brake piston
  • the reset member 62 is sleeved on the outer periphery of the lower end of the brake piston 61.
  • Both ends of the elastic reset member 62 of the brake piston abut between the step surface of the brake piston and the step surface of the first stepped hole.
  • the elastic reset member 62 of the brake piston can choose to use a spring, you can also use elastic rubber.
  • an oil distribution groove 611 is provided on the upper end surface of the brake piston 61, and a cross shape is optional , Or " ⁇ " font.
  • the oil discharge assembly 7 includes: an actuating pin 71, an actuating pin elastic reset member 72, and a stop screw 73.
  • the execution pin 71 has a T shape with an upper size and a smaller size.
  • the execution pin 71 includes a head portion and a shaft portion.
  • the diameter of the head portion of the execution pin 71 is larger than the diameter of the mounting hole 44 of the oil removal assembly, and the mounting hole 44 of the oil removal assembly is upper
  • a second stepped hole of large and small size is formed at the step of the second stepped hole
  • the shaft portion is provided with a shaft internal threaded hole 713 extending in the axial direction of the shaft portion
  • the outer periphery of the shaft portion is provided with
  • An annular oil groove 711, a communication oil hole 712 connecting the annular oil groove 711 and the internal threaded hole 713 of the shaft portion is provided inside the shaft portion, the communication oil hole 712 can be optionally extended along the radial direction of the shaft portion, and the execution pin 71 can play
  • the pressure-retaining function can also play the role of draining oil.
  • the elastic reset member 72 of the actuator is sleeved on the outer periphery of the shaft portion of the executive pin 71, and the elastic reset member 72 of the actuator is mounted against the head of the executive pin 71 and the oil discharge assembly Between the stepped surface of the stepped hole of the hole 44, the elastic reset member 72 of the execution pin may be a spring or an elastic rubber.
  • the head of the limit screw 73 is located below the valve bridge body 4, the shank of the limit screw 73 is threadedly connected with the internal threaded hole 713 of the shaft portion of the actuating pin 71, and the limit screw 73 is provided along the limit screw
  • the axially penetrating limit screw oil passage 731 of 73, the limit screw 73 can not only limit the execution pin 71, but also bear the role of draining oil.
  • an embodiment of the present invention also provides an in-cylinder braking system including an exhaust rocker arm assembly A and the valve bridge assembly B described in any of the above embodiments.
  • the exhaust rocker assembly A includes a rocker body 1
  • a rocker oil passage 11 is provided inside the rocker body 1
  • a ball pin assembly 2 and an adjustment screw assembly 3 are provided on the valve side of the rocker body 1.
  • the ball pin assembly 2 includes a first elephant foot 21 having a first spherical groove, and a ball pin 22 with one end connected to the rocker body 1 in an interference fit and the other end received in the first ball groove.
  • the assembly 2 is provided with a ball pin assembly oil passage 23 penetrating the ball pin 22 and the first elephant foot 21 and communicating with the rocker arm oil passage 11.
  • the upper surface of the first elephant foot 21 and the main piston 51 of the main piston assembly 5 is on the main piston
  • the elastic return member 53 always maintains contact under the action of a flat contact, which reduces the wear on the flat surface of the main piston 51;
  • the adjustment screw assembly 3 includes a second elephant foot 31 with a second spherical groove, and a rocker arm body 1
  • An adjusting screw 32 screwed and received at one end in a second spherical groove, the second elephant foot 31 always keeps in contact with the upper plane of the actuator pin 71 of the oil discharge assembly 7 under the action of the elastic reset member 72 of the actuator pin.
  • An embodiment of the present invention also provides an engine including the in-cylinder braking system described above.
  • the engine may further include a tappet, a push rod, a camshaft, and a cam
  • the cam is provided on the camshaft, and the lower end of the tappet abuts the cam
  • the upper end of the tappet is connected to the push rod, and the top end of the push rod abuts the end of the rocker arm body 1 away from the valve bridge assembly B.
  • the pressure oil from the rocker oil passage 11 in the rocker body 1 enters the main piston 51 through the ball pin assembly oil passage 23 and the main piston oil inlet 511, and opens the check valve in the main piston assembly 5 , Enter and quickly fill the inner cavity of the main piston 51.
  • the rocker body 1 drives the main piston assembly 5 downward through the ball pin assembly 2.
  • the shaft portion of the execution pin 71 seals the valve bridge oil passage 46. Since the hydraulic oil is not easily compressed, a high-pressure oil chamber is formed, and the hydraulic oil drives the brake piston 61 to move downward, thereby driving the brake exhaust valve 81 to open. Achieve in-cylinder braking.
  • the valve bridge assembly provided herein includes a valve bridge body, a main piston assembly, a brake piston assembly and an oil discharge assembly provided on the valve bridge body.
  • a main piston mounting hole and a main piston installation hole are provided on the inner end of the valve bridge body
  • the brake piston installation hole below and connected to the brake piston, the outer end of the valve bridge body is provided with an oil discharge assembly installation hole, and the valve bridge oil passage is provided inside the valve bridge body to communicate the piston installation hole and the oil discharge assembly installation hole;
  • the main piston assembly is installed in the main piston installation hole, the brake piston assembly is installed in the brake piston installation hole, and the oil discharge assembly is installed in the oil discharge assembly installation hole; since the main piston assembly and the brake piston assembly are present on the valve bridge body Set up and down, and located at the inner end of the valve bridge body, so that the distance between the brake piston assembly and the rocker arm shaft becomes smaller, that is, the force arm becomes smaller, so when the brake exhaust valve is opened near the compression top dead center, the transmission The load to the push rod side is greatly reduced,
  • the oil unloading component is integrated on the valve bridge body, it not only has a compact structure, reliable sealing and high braking power, but also reduces the number of parts and the weight of the engine.
  • the in-cylinder brake system and the engine provided in this article all use the valve bridge assembly in this article. Therefore, during the compression and release of the brake, the brake load is greatly reduced and the valve mechanism under braking conditions is improved. reliability.
  • the valve side of the rocker arm body is provided with a ball pin assembly and an adjustment screw assembly. The first elephant foot of the ball pin assembly is always in contact with the main piston assembly, and the second elephant foot of the adjustment screw assembly is always in contact with the oil discharge assembly. The contact area of the elephant foot is plane contact, which reduces wear and tear.
  • valve bridge assembly When the cam moves the valve bridge assembly downward during the main exhaust lift, the two elephant feet exert force, and the valve bridge assembly is stable and well balanced; the valve bridge It is always in contact with the rocker arm, which prevents the rocker arm from separating from the valve bridge, avoids the failure of the rocker arm's elephant foot turning and the elephant foot being knocked due to the large valve gap, and the engine reliability is greatly improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un ensemble pont de soupape (B) pour un moteur. L'ensemble pont de soupape comprend un corps de pont de soupape (4). Une extrémité latérale interne du corps de pont de soupape (4) est pourvue d'un trou de montage de piston principal (41), et d'un trou de montage de piston de freinage (43) situé au-dessous du trou de montage de piston principal (41) et en communication avec celui-ci, et une extrémité latérale externe du corps de pont de soupape (4) est pourvue d'un trou de montage d'ensemble d'évacuation d'huile (44). Le corps de pont de soupape (4) est pourvu à son intérieur d'un canal d'huile de pont de soupape (46) en communication avec les trous de montage de piston et le trou de montage d'ensemble d'évacuation d'huile (44). Un ensemble piston principal (5) est monté dans le trou de montage de piston principal (41), un ensemble piston de freinage (6) est monté dans le trou de montage de piston de freinage (43), et un ensemble d'évacuation d'huile (7) est monté dans le trou de montage d'ensemble d'évacuation d'huile (44). L'invention concerne en outre un système de freinage dans le cylindre et un moteur.
PCT/CN2019/097018 2018-12-19 2019-07-22 Ensemble pont de soupape, système de freinage dans un cylindre et moteur Ceased WO2020125011A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811566435.7 2018-12-19
CN201811566435.7A CN109356683B (zh) 2018-12-19 2018-12-19 气门桥总成、缸内制动系统及发动机

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Publication Number Publication Date
WO2020125011A1 true WO2020125011A1 (fr) 2020-06-25

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PCT/CN2019/097018 Ceased WO2020125011A1 (fr) 2018-12-19 2019-07-22 Ensemble pont de soupape, système de freinage dans un cylindre et moteur

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CN (1) CN109356683B (fr)
WO (1) WO2020125011A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109356683B (zh) * 2018-12-19 2020-04-03 潍柴动力股份有限公司 气门桥总成、缸内制动系统及发动机
CN110173314B (zh) * 2019-05-15 2023-07-18 浙江大学 一种可实现压缩释放式发动机制动的气门桥及其排气制动方法
CN111140304B (zh) * 2020-01-19 2021-10-26 中国重汽集团济南动力有限公司 一种气门桥总成
CN111255538B (zh) * 2020-03-16 2025-05-06 马振万 内燃机缸内制动装置
CN111502791B (zh) * 2020-04-24 2024-08-13 东风商用车有限公司 一种横置柱塞式可变高度的气门桥总成
CN112160811A (zh) * 2020-10-26 2021-01-01 安徽康明斯动力有限公司 一种发动机缸内制动配气机构
CN113279834B (zh) * 2021-07-26 2021-10-22 龙口中宇热管理系统科技有限公司 一种发动机缸内制动机构及方法
CN116557099B (zh) * 2023-05-19 2025-09-19 潍柴动力股份有限公司 气门桥、制动执行机构、排气制动系统、方法和发动机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101624926A (zh) * 2008-07-11 2010-01-13 德国曼商用车辆股份公司 具有发动机制动装置的内燃机
CN105351026A (zh) * 2015-11-23 2016-02-24 潍柴动力股份有限公司 一种发动机排气制动系统
US20160084122A1 (en) * 2014-09-18 2016-03-24 Jacobs Vehicle Systems, Inc. Lost motion assembly in a valve bridge for use with a valve train comprising a hydraulic lash adjuster
CN106150589A (zh) * 2015-04-28 2016-11-23 上海尤顺汽车部件有限公司 一种单气门压缩释放型阀桥制动装置
CN109356683A (zh) * 2018-12-19 2019-02-19 潍柴动力股份有限公司 气门桥总成、缸内制动系统及发动机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1969207A4 (fr) * 2005-12-28 2012-03-07 Jacobs Vehicle Systems Inc Procede et systeme pour frein a cycle de resistance de fuite partielle
DE102008032775A1 (de) * 2008-07-11 2010-01-14 Man Nutzfahrzeuge Aktiengesellschaft Brennkraftmaschine mit einer Motorbremseinrichtung und einem Ventilspielausgleichsmechanismus
DE102009048143A1 (de) * 2009-10-02 2011-04-07 Man Nutzfahrzeuge Aktiengesellschaft Brennkraftmaschine mit einer Motorbremseinrichtung
DE102009048104A1 (de) * 2009-10-02 2011-04-07 Man Nutzfahrzeuge Aktiengesellschaft Brennkraftmaschine mit einer Motorbremseinrichtung
CN106968753B (zh) * 2017-04-20 2023-03-24 东风商用车有限公司 用于发动机制动油路的制动执行机构及其使用方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101624926A (zh) * 2008-07-11 2010-01-13 德国曼商用车辆股份公司 具有发动机制动装置的内燃机
US20160084122A1 (en) * 2014-09-18 2016-03-24 Jacobs Vehicle Systems, Inc. Lost motion assembly in a valve bridge for use with a valve train comprising a hydraulic lash adjuster
CN106150589A (zh) * 2015-04-28 2016-11-23 上海尤顺汽车部件有限公司 一种单气门压缩释放型阀桥制动装置
CN105351026A (zh) * 2015-11-23 2016-02-24 潍柴动力股份有限公司 一种发动机排气制动系统
CN109356683A (zh) * 2018-12-19 2019-02-19 潍柴动力股份有限公司 气门桥总成、缸内制动系统及发动机

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CN109356683A (zh) 2019-02-19

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