WO2016059456A1 - Procédé et système de freinage moteur - Google Patents

Procédé et système de freinage moteur Download PDF

Info

Publication number
WO2016059456A1
WO2016059456A1 PCT/IB2015/001625 IB2015001625W WO2016059456A1 WO 2016059456 A1 WO2016059456 A1 WO 2016059456A1 IB 2015001625 W IB2015001625 W IB 2015001625W WO 2016059456 A1 WO2016059456 A1 WO 2016059456A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
engine
braking
roller
exhaust
Prior art date
Application number
PCT/IB2015/001625
Other languages
English (en)
Inventor
Yong XI
Zhou Yang
Rujie ZHU
Original Assignee
Shanghai Universoon Auto Parts 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
Priority claimed from CN201410544937.5A external-priority patent/CN104314633B/zh
Priority claimed from CN201410546875.1A external-priority patent/CN104314636B/zh
Priority claimed from CN201410620840.8A external-priority patent/CN104454178A/zh
Priority claimed from CN201410632591.4A external-priority patent/CN104358600A/zh
Priority claimed from CN201510095431.5A external-priority patent/CN104712396A/zh
Priority claimed from CN201510097866.3A external-priority patent/CN104712397B/zh
Application filed by Shanghai Universoon Auto Parts Co., Ltd. filed Critical Shanghai Universoon Auto Parts Co., Ltd.
Priority to EP15850672.5A priority Critical patent/EP3207226A4/fr
Priority to US15/517,957 priority patent/US20170241305A1/en
Publication of WO2016059456A1 publication Critical patent/WO2016059456A1/fr

Links

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
    • 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
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • 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
    • 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
    • F01L1/267—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 with means for varying the timing or the lift of the valves
    • 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
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
    • 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
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
    • 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
    • F01L2305/00—Valve arrangements comprising rollers

Definitions

  • a new engine braking method comprises the following steps:
  • the engine power cam and the engine braking cam are located on a common cam shaft, are adjacent to each other, and have the same or substantially the same inner base circle.
  • the cam roller is placed on a rocker arm of the engine, and the step of engaging the cam roller with the engine power cam includes using an axial rocker arm driver to move the rocker arm axially on a rocker shaft of the engine to a first axial position on the rocker shaft, and wherein the step of engaging the cam roller with the engine braking cam includes using the axial rocker arm driver to move the rocker arm axially on the rocker shaft of the engine to a second axial position on the rocker shaft.
  • the cam roller comprises an exhaust cam roller, said engine power cam comprises a normal exhaust cam, and said engine braking cam comprises a braking exhaust cam.
  • the present application has positive and significant advantages over the prior art.
  • the present invention achieves the conversion between the engine power (firing) operation and the engine braking operation.
  • the simple and compact structure is easy to assemble and manufacture with a wide range of applications and other advantages. Since the engine braking cam and the engine power cam are independent from each other, engine braking performance can be optimized.
  • the present invention uses a solid chain (mechanical linkage) to transfer loads, eliminating the high oil pressure, high compliance and high leakage as well as hydraulic jacking and other disadvantages or failure modes linked to the hydraulic loading of conventional engine brakes.
  • Figure 15 is an engine braking control diagram used in the seventh embodiment of the engine braking method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
  • the engine braking operation 20 simply switches the power operation of the exhaust valve to the engine braking operation, the engine power operation of the intake valve is maintained without any change.
  • the intake valve motion for engine power operation is shown in Figure 5 (the intake lift curve 321) and the engine braking exhaust valve motion which is from the braking exhaust cam 2302, as shown in Figure 6 as an example, is generated by three braking exhaust cam lobes.
  • FIGS 8 and 9 are used to illustrate the third embodiment of the present invention.
  • the present embodiment has two valves 301 and 302 that are biased against the valve seat 320 in the engine block 500 by the two valve springs 311 and 312.
  • the valve actuator 200 also includes a rocker arm 210 and a valve bridge 400 placed on the two valves.
  • the rocker arm 210 actuates a single engine valve (the first valve or the inner valve close to the cams) through a lash adjusting mechanism (a lash adjusting screw 1102), an e-foot 1142, and a braking bar 116 in the valve bridge 400.
  • the lash adjusting screw 1102 is fixed on the rocker arm 210 by a lock nut 1052.
  • the clip ring 176 (or other stopping mechanism) inside the piston bore 190 is used to limit the stroke of piston 160 as well as to keep the piston 160 from falling out of the bore (good for shipping and assembly).
  • An anti-no-follow mechanism is added to prevent no-follow of the moving parts due to the gap 234 formed by the lost motion mechanism 250.
  • the anti-no-follow mechanism includes a spring or an elastic part, such as 117, 118 and 198 in Figure 8.
  • the shape, type, installation and location of the springs or elastic parts can be changed to serve the purpose of keeping the moving parts, such as the valve bridge 400, from having no-follow.
  • the height of the gap 234 is determined by the braking cam lobes to escape (or lose) the motion of the braking cam lobes so that it won't be transmitted to the valves through the valve bridge 400.
  • Figure 10 is used to illustrate the fourth embodiment of the present invention.
  • the present embodiment has two rocker arms: a full rocker arm 210 for opening one valve (the inner valve) 301 and a half rocker arm 212 for opening both of the two valves (the inner and outer valves) 301 and 302.
  • the lost motion mechanism 250 is now a mechanical linkage mechanism that connects the full rocker arm 210 and the half rocker arm 212.
  • the full rocker arm 210 is similar to that of the first embodiment and has the cam roller 235 on the roller shaft 231 on its end close to the cams 230 and 2302.

Abstract

La présente invention concerne un procédé de freinage moteur comprenant les étapes consistant à mettre en prise un rouleau de came d'un moteur à combustion interne avec une came de puissance de moteur pour une opération de puissance de moteur ; séparer le rouleau de came de la came de puissance de moteur ; perdre un mouvement à partir de la came de puissance de moteur et un mouvement d'une soupape de moteur associée au mouvement à partir de la came de puissance de moteur ; mettre en prise le rouleau de came avec une came de freinage moteur pour une opération de freinage moteur ; transmettre un mouvement de la came de freinage moteur à la soupape de moteur ; et générer un mouvement de soupape de moteur pour l'opération de freinage moteur. Un système de freinage moteur comprend une came de puissance de moteur d'un moteur à combustion interne ; une came de freinage moteur du moteur à combustion interne ; et un rouleau de came qui est conçu pour se mettre en prise avec la came de puissance de moteur pour une opération de puissance de moteur et pour se mettre en prise avec la came de freinage moteur pour une opération de freinage moteur.
PCT/IB2015/001625 2014-10-15 2015-05-21 Procédé et système de freinage moteur WO2016059456A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15850672.5A EP3207226A4 (fr) 2014-10-15 2015-05-21 Procédé et système de freinage moteur
US15/517,957 US20170241305A1 (en) 2014-10-15 2015-05-21 Engine Braking Method and System

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
CN201410544937.5A CN104314633B (zh) 2014-10-15 2014-10-15 一种发动机的可变气门驱动机构
CN201410544937.5 2014-10-15
CN201410546875.1A CN104314636B (zh) 2014-10-16 2014-10-16 一种发动机制动装置
CN201410546875.1 2014-10-16
CN201410620840.8A CN104454178A (zh) 2014-11-06 2014-11-06 一种发动机制动方法
CN201410620840.8 2014-11-06
CN201410632591.4A CN104358600A (zh) 2014-11-10 2014-11-11 一种发动机气门运动转换装置
CN201410632591.4 2014-11-11
CN201510095431.5A CN104712396A (zh) 2015-03-04 2015-03-04 一种发动机制动装置
CN201510095431.5 2015-03-04
CN201510097866.3 2015-03-05
CN201510097866.3A CN104712397B (zh) 2015-03-05 2015-03-05 一种复合摇臂发动机制动装置

Publications (1)

Publication Number Publication Date
WO2016059456A1 true WO2016059456A1 (fr) 2016-04-21

Family

ID=55746186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/001625 WO2016059456A1 (fr) 2014-10-15 2015-05-21 Procédé et système de freinage moteur

Country Status (3)

Country Link
US (1) US20170241305A1 (fr)
EP (1) EP3207226A4 (fr)
WO (1) WO2016059456A1 (fr)

Cited By (7)

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US20160160830A1 (en) * 2014-12-05 2016-06-09 Denso Corporation Control apparatus for internal combustion engine
EP3385513A1 (fr) * 2017-04-08 2018-10-10 MAN Truck & Bus AG Commande de soupape variable
WO2018185197A1 (fr) * 2017-04-05 2018-10-11 Avl List Gmbh Dispositif d'actionnement mécanique de soupapes
EP3404252A1 (fr) * 2017-05-18 2018-11-21 MAN Truck & Bus AG Procédé et dispositif de démarrage d'un moteur à combustion interne pourvu d'un système à came coulissante
WO2019222777A1 (fr) 2018-05-22 2019-11-28 Avl List Gmbh Mécanisme de distribution d'un moteur à combustion interne
SE541888C2 (en) * 2017-03-22 2020-01-02 Scania Cv Ab Four-Stroke Internal Combustion Engine and thereto related Vehicle and Method
EP3974624A4 (fr) * 2019-05-21 2023-06-07 Wuxi Valteng Power Technology Co., Ltd. Arbre à cames de moteur et appareil d'entraînement de soupape

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KR102206672B1 (ko) * 2016-08-31 2021-01-21 자콥스 비히클 시스템즈, 인코포레이티드. 탈착 가능한 밸브 브릿지 및 이를 포함하는 밸브 작동 시스템
DE102017118852A1 (de) * 2017-08-18 2019-02-21 Man Truck & Bus Ag Kraftübertragungsvorrichtung für variablen Ventiltrieb
WO2020014637A1 (fr) * 2018-07-12 2020-01-16 Eaton Intelligent Power Limited Frein de purge par pont équilibré doté d'un rattrapeur de jeu hydraulique
US11339690B2 (en) 2018-07-12 2022-05-24 Eaton Intelligent Power Limited Balanced bridge bleeder brake with HLA
US10550772B1 (en) * 2018-10-23 2020-02-04 GM Global Technology Operations LLC Camshaft assembly and method of operating the same
DE102019203233A1 (de) * 2019-03-11 2020-09-17 Mahle International Gmbh Ventilsteuerung
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Publication number Priority date Publication date Assignee Title
US10001104B2 (en) * 2014-12-05 2018-06-19 Denso Corporation Control apparatus for internal combustion engine
US20160160830A1 (en) * 2014-12-05 2016-06-09 Denso Corporation Control apparatus for internal combustion engine
SE541888C2 (en) * 2017-03-22 2020-01-02 Scania Cv Ab Four-Stroke Internal Combustion Engine and thereto related Vehicle and Method
JP2020516804A (ja) * 2017-04-05 2020-06-11 アーファオエル・リスト・ゲーエムベーハー 機械式弁操作装置
WO2018185197A1 (fr) * 2017-04-05 2018-10-11 Avl List Gmbh Dispositif d'actionnement mécanique de soupapes
JP7317713B2 (ja) 2017-04-05 2023-07-31 アーファオエル・リスト・ゲーエムベーハー 機械式弁操作装置
CN108729969A (zh) * 2017-04-08 2018-11-02 曼卡车和巴士股份公司 可变的阀动装置
US10584619B2 (en) 2017-04-08 2020-03-10 Man Truck & Bus Ag Variable valve gear
EP3385513A1 (fr) * 2017-04-08 2018-10-10 MAN Truck & Bus AG Commande de soupape variable
CN108729969B (zh) * 2017-04-08 2021-10-26 曼卡车和巴士股份公司 可变的阀动装置
RU2770809C2 (ru) * 2017-04-08 2022-04-21 Ман Трак Унд Бас Аг Регулируемый клапанный механизм и автомобиль с таким механизмом
EP3404252A1 (fr) * 2017-05-18 2018-11-21 MAN Truck & Bus AG Procédé et dispositif de démarrage d'un moteur à combustion interne pourvu d'un système à came coulissante
WO2019222777A1 (fr) 2018-05-22 2019-11-28 Avl List Gmbh Mécanisme de distribution d'un moteur à combustion interne
EP3974624A4 (fr) * 2019-05-21 2023-06-07 Wuxi Valteng Power Technology Co., Ltd. Arbre à cames de moteur et appareil d'entraînement de soupape

Also Published As

Publication number Publication date
EP3207226A1 (fr) 2017-08-23
US20170241305A1 (en) 2017-08-24
EP3207226A4 (fr) 2018-05-16

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