EP0576768B1 - Ventilantriebssystem für eine mehrzylindrige Brennkraftmaschine - Google Patents

Ventilantriebssystem für eine mehrzylindrige Brennkraftmaschine Download PDF

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Publication number
EP0576768B1
EP0576768B1 EP92710025A EP92710025A EP0576768B1 EP 0576768 B1 EP0576768 B1 EP 0576768B1 EP 92710025 A EP92710025 A EP 92710025A EP 92710025 A EP92710025 A EP 92710025A EP 0576768 B1 EP0576768 B1 EP 0576768B1
Authority
EP
European Patent Office
Prior art keywords
coupling
lever
actuating
levers
rocker
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.)
Expired - Lifetime
Application number
EP92710025A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0576768A1 (de
Inventor
Christoph Dipl.-Ing. Reckzügel
Rolf Ohlendorf
Mario Dipl.-Ing. Mürwald
Jürgen Dipl.-Ing. Frey
Gerhard Doll
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0576768A1 publication Critical patent/EP0576768A1/de
Application granted granted Critical
Publication of EP0576768B1 publication Critical patent/EP0576768B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a valve drive system for a multi-cylinder internal combustion engine according to the features specified in the preamble of claim 1.
  • a valve drive system with two intake valves and one exhaust valve for each cylinder is known.
  • the rocker arm arrangement for these valves is composed of two actuating levers and a coupling lever, each actuating lever being drivable by a low-speed cam and the coupling lever by a high-speed cam. Both actuating levers and the coupling lever of each cylinder can be coupled and result in a unit driven by the high-speed cam for actuating both inlet valves.
  • rocker arm pairs consist of drive rocker arms and free rocker arms with coupling devices and in which an intake valve or a drive rocker arm is assigned an exhaust valve in operation, the free rocker arm of the intake valve or exhaust valve is detachable.
  • the rocker arm pairs for the intake valves are arranged immediately adjacent to one another. The position and direction of action of the coupling bolts perpendicular to the axis of the rocker arm axis avoid one local wear on the cams and associated cam slide devices.
  • the invention has for its object to provide a valve drive system of the type specified in the preamble of claim 1 with which the various opening and closing times while largely maintaining a compact design and using only a single camshaft for a row of cylinders for the valve drive of each cylinder display more flexibly.
  • the valve drive system allows, in the arrangement of only one camshaft in the cylinder head, a separate control of the pair of actuating and coupling levers on the intake and exhaust side of the rocker arm pair of each cylinder and thus any determination of the switching times for the intake and exhaust valve with regard to the opening and closing times .
  • the special design for each cylinder thus results in switching options through which only the actuating levers or only the coupling levers take effect, or a circuit is possible in which only the actuation lever for one inlet valve and the coupling lever for the other inlet valve of the same cylinder or vice versa.
  • variable control times can be achieved with the exhaust valve in connection with variable control times of at least one intake valve.
  • valve drive system in which the cams actuate only one camshaft all rocker arms for the intake and exhaust valves of a row of cylinders and each actuating lever and the associated coupling lever for actuating at least one exhaust valve between the rocker arm pairs consisting of actuating and coupling levers intended for the intake valves are arranged, there is a minimization of the manufacturing, assembly and space requirements of the control parts connected to the cylinder head.
  • exhaust valves 2 and intake valves 3, 4 are provided, all of which are driven by a single camshaft 5 mounted in the cylinder head 1 via a rocker arm arrangement 6.
  • the rocker arm arrangement 6 comprises two rocker arms for the exhaust valve 2 and four rocker arms for the actuation of the two intake valves 3, 4. Of these four rocker arms, two act as actuating levers 8, 9 and the other two as coupling levers 10, 11, while of the two rocker arms for exhaust valve 2 one acts as an operating lever 7 and the other as a coupling lever 7a.
  • the rocker arm pair 22 is arranged between the rocker arm pairs 14, 15, specifically the inlet-side actuating levers 8, 9 are placed directly adjacent to the coupling lever 7a and actuating lever 7 for the exhaust valve 2.
  • the actuating levers 8, 9 and the coupling levers 10, 11 are rotatably mounted on a common rocker arm axis 12 and the actuating lever 7 and the coupling lever 7a on another rocker arm axis 13 (FIGS. 1 and 2).
  • the camshaft 5 runs between the two rocker arm axes 12, 13.
  • the actuating lever and associated coupling lever form a detachable unit or a pair of rocker arms.
  • the rocker arm pairs 14, 15, 25 of each cylinder are each provided with a coupling device 16, 17, 22, each of which consists of a pressurizable locking bolt 16a, 17a, 22a and a spring-loaded guide cup 16b, 17b, 22b.
  • the locking pin is mounted in a longitudinally displaceable manner in the coupling lever, while the guide cup with the spring 16c, 17c, 22c is guided in a longitudinally displaceable manner in the actuating lever, or vice versa.
  • cams 18, 19, 20, 21 for the actuating levers 8, 9 and coupling levers 10, 11 have basic circles of the same diameter, while the cams 18, 21 assigned to the coupling levers 10, 11 have larger cam elevations than the cams 19 assigned to the actuating levers 8, 9 , 20.
  • the valves of a cylinder can be controlled separately, that is to say that depending on the actuation of the coupling devices 16, 17, different inlet start and end times can be driven.
  • Fig. 3 is a schematic representation of the valve drive system with six cams 18, 19; 7, 7a; 20, 21 shown, which cooperate with actuating and coupling levers for the intake and exhaust valves.
  • the coupling lever 10 is assigned to the cam 18, the actuating lever 8 intended for the intake valve 3 to the cam 19, the actuating lever 7 for the exhaust valve 2 to the cam 23, the coupling lever 7a to the cam 24, the actuating lever 9 to the intake valve 4 to the cam 20 and the coupling lever 11 the cam 21.
  • a version with only one actuating lever 9 can be used for the inlet valve 4 without a coupling lever 11, which means that cams 21, coupling lever 11 and coupling device 17 are omitted (indicated by broken lines).
  • the switching options can e.g. be load, speed, flow and exhaust gas recirculation dependent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP92710025A 1992-06-27 1992-08-20 Ventilantriebssystem für eine mehrzylindrige Brennkraftmaschine Expired - Lifetime EP0576768B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4221134 1992-06-27
DE4221134A DE4221134C1 (enrdf_load_stackoverflow) 1992-06-27 1992-06-27

Publications (2)

Publication Number Publication Date
EP0576768A1 EP0576768A1 (de) 1994-01-05
EP0576768B1 true EP0576768B1 (de) 1996-10-16

Family

ID=6461960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92710025A Expired - Lifetime EP0576768B1 (de) 1992-06-27 1992-08-20 Ventilantriebssystem für eine mehrzylindrige Brennkraftmaschine

Country Status (8)

Country Link
US (1) US5297505A (enrdf_load_stackoverflow)
EP (1) EP0576768B1 (enrdf_load_stackoverflow)
JP (1) JP2552243B2 (enrdf_load_stackoverflow)
KR (1) KR950014400B1 (enrdf_load_stackoverflow)
DE (2) DE4221134C1 (enrdf_load_stackoverflow)
FR (1) FR2692933B1 (enrdf_load_stackoverflow)
GB (1) GB2268226B (enrdf_load_stackoverflow)
IT (1) IT1262366B (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221134C1 (enrdf_load_stackoverflow) * 1992-06-27 1993-07-01 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
US5406835A (en) * 1992-06-27 1995-04-18 Mercedes Benz Ag Method for monitoring the switching process of a coupling device
DE4232848A1 (de) * 1992-09-30 1994-03-31 Audi Ag Ventilbetätigungsmechanismus
JPH06235309A (ja) * 1992-12-16 1994-08-23 Mitsubishi Motors Corp 内燃機関用動弁装置
DE4316860C1 (de) * 1993-05-19 1994-05-26 Audi Ag Ventilbetätigungsmechanismus für eine Brennkraftmaschine
DE4319918A1 (de) * 1993-06-16 1994-12-22 Rexroth Mannesmann Gmbh Verfahren zum Ansteuern eines Elektromagneten
DE4322212A1 (de) * 1993-07-03 1995-01-12 Bayerische Motoren Werke Ag Nockengesteuerte Ventilbetätigung für eine 4-Takt/8-Takt Brennkraftmaschine
EP0652353B1 (de) * 1993-11-08 1996-09-04 Mercedes-Benz Ag Vorrichtung zum Betreiben von Ventilen einer Brennkraftmaschine
JP3464698B2 (ja) * 1994-01-25 2003-11-10 本田技研工業株式会社 多気筒内燃機関における触媒活性化装置
DE4404683C1 (de) * 1994-02-15 1995-03-02 Daimler Benz Ag Verfahren zur Minimierung von Spiel in einem Ventiltrieb
DE4411182B4 (de) * 1994-03-31 2004-04-08 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Schaltbare Ventilsteuerung für Brennkraftmaschinen
JP3402853B2 (ja) * 1995-04-12 2003-05-06 ヤマハ発動機株式会社 エンジンの動弁装置
DE19515284A1 (de) * 1995-04-26 1996-10-31 Schaeffler Waelzlager Kg Nockenfolger eines Ventiltriebs einer Brennkraftmaschine
DE19519601C2 (de) * 1995-05-29 1997-04-03 Daimler Benz Ag Ventilantriebssytem für eine mehrzylindrige Brennkraftmaschine
DE19530441C1 (de) * 1995-08-18 1997-01-30 Daimler Benz Ag Vorrichtung zum Betreiben von Ventilen einer Brennkraftmaschine
DE19604943C2 (de) * 1996-02-10 2002-10-02 Daimler Chrysler Ag Vorrichtung zum Betreiben von Ventilen einer Brennkraftmaschine
DE19643711A1 (de) * 1996-10-23 1998-04-30 Audi Ag Ventilbetätigungsvorrichtung für eine Brennkraftmaschine
DE19719984A1 (de) * 1997-05-13 1998-11-19 Alois Kauf Strömungsoptimierte, tropfenförmige Ventilgestaltung auf der Auslaßseite von Viertaktmotoren
DE10016103A1 (de) * 2000-03-31 2001-10-04 Audi Ag Variable Ventilsteuerung
KR100359410B1 (ko) * 2000-07-01 2002-10-31 주식회사 파이온테크 브이에프디 커버유리 제조방법과 제조장치 및 제조금형
US7107953B2 (en) * 2003-09-18 2006-09-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Valve gear of an internal combustion engine
TW201144574A (en) * 2010-06-15 2011-12-16 Kwang Yang Motor Co Structure of driving member of engine valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800347A1 (de) * 1987-01-08 1988-09-29 Honda Motor Co Ltd Ventilbetaetigungsvorrichtung in einer brennkraftmaschine

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Publication number Priority date Publication date Assignee Title
GB2148386B (en) * 1983-10-22 1987-09-09 Bl Tech Ltd Cylinder head for spark ignition internal combustion engine
JPS60128915A (ja) * 1983-12-17 1985-07-10 Honda Motor Co Ltd 多気筒内燃機関の弁作動休止装置
DE3613945A1 (de) * 1985-04-26 1986-10-30 Mazda Motor Corp., Hiroshima Veraenderbarer ventilmechanismus fuer verbrennungsmaschinen
US4741297A (en) * 1985-07-31 1988-05-03 Honda Giken Kogyo Kabushiki Kaisha Valve operating mechanism for internal combustion engine
US4768467A (en) * 1986-01-23 1988-09-06 Fuji Jukogyo Kabushiki Kaisha Valve operating system for an automotive engine
JPH081125B2 (ja) * 1986-10-16 1996-01-10 マツダ株式会社 エンジンのバルブ駆動装置
US4901685A (en) * 1986-12-19 1990-02-20 Honda Giken Kogyo Kabushiki Kaisha Valve operating mechanism for an internal combustion engine
CA1323533C (en) * 1987-12-28 1993-10-26 Toshihiro Oikawa Valve operating system for internal combustion engines
US4942854A (en) * 1988-03-03 1990-07-24 Honda Giken Kogyo Kabushiki Kaisha Valve operating device for use in internal combustion engine
JPH068604B2 (ja) * 1988-05-23 1994-02-02 本田技研工業株式会社 内燃機関の弁作動状態切換装置
US4995353A (en) * 1990-04-11 1991-02-26 General Motors Corporation Valve train with lash/compliance compensation
DE4025569C1 (en) * 1990-08-11 1991-07-18 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Valve brake for vehicle IC engine - has separately controllable cylinder outlet valves for drive and braking functions
DE4221134C1 (enrdf_load_stackoverflow) * 1992-06-27 1993-07-01 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800347A1 (de) * 1987-01-08 1988-09-29 Honda Motor Co Ltd Ventilbetaetigungsvorrichtung in einer brennkraftmaschine

Also Published As

Publication number Publication date
GB2268226A (en) 1994-01-05
US5297505A (en) 1994-03-29
FR2692933A1 (fr) 1993-12-31
IT1262366B (it) 1996-06-19
EP0576768A1 (de) 1994-01-05
GB2268226B (en) 1995-06-28
JPH0658119A (ja) 1994-03-01
JP2552243B2 (ja) 1996-11-06
FR2692933B1 (fr) 1994-10-07
ITRM930403A0 (it) 1993-06-22
KR950014400B1 (en) 1995-11-27
GB9312222D0 (en) 1993-07-28
DE4221134C1 (enrdf_load_stackoverflow) 1993-07-01
ITRM930403A1 (it) 1994-12-22
DE59207388D1 (de) 1996-11-21
KR940000724A (ko) 1994-01-03

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