EP0990776B1 - Moteur à combustion interne à 2 rangées de cylindres disposées en V - Google Patents

Moteur à combustion interne à 2 rangées de cylindres disposées en V Download PDF

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Publication number
EP0990776B1
EP0990776B1 EP99117325A EP99117325A EP0990776B1 EP 0990776 B1 EP0990776 B1 EP 0990776B1 EP 99117325 A EP99117325 A EP 99117325A EP 99117325 A EP99117325 A EP 99117325A EP 0990776 B1 EP0990776 B1 EP 0990776B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
internal combustion
combustion engine
exhaust
cylinder
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
EP99117325A
Other languages
German (de)
English (en)
Other versions
EP0990776A1 (fr
Inventor
Friedrich Prof.Dr.-Ing. Indra
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.)
Adam Opel GmbH
Original Assignee
Adam Opel GmbH
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 Adam Opel GmbH filed Critical Adam Opel GmbH
Publication of EP0990776A1 publication Critical patent/EP0990776A1/fr
Application granted granted Critical
Publication of EP0990776B1 publication Critical patent/EP0990776B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • 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
    • F01L13/0005—Deactivating valves

Definitions

  • the invention relates to an internal combustion engine with two cylinder banks arranged in a V-shape according to the Preamble of claim 1.
  • DE 29 47 580 A1 is a multi-cylinder Internal combustion engine described, the valves of one camshaft below via push rods and rocker arms be operated.
  • the pushrods of the intake valves are with a hydraulic pressure cylinder provided so that their effective length can be changed and so that the cylinders in question can be switched off.
  • a Such multi-cylinder internal combustion engine can also be used as a V-engine be executed.
  • DE 44 05 389 A1 has a V-shaped design Internal combustion engine shown in the space between a camshaft is supported in the two cylinder banks is that via push rods and rocker arms both the Intake and exhaust valves of both cylinder banks actuated.
  • a second camshaft for actuating pump elements for fuel injection is above arranged the first camshaft. Precautions for cylinder deactivation or at a variable valve opening time are not proposed with this publication or suggested.
  • the invention has for its object a To create internal combustion engine of the type mentioned which in addition to their compact design and the possibility of cylinder deactivation through switchable Shorten the push rods also variable valve actuation times with relatively little technical effort having.
  • Exhaust valves of both cylinder banks can be operated by the arrangement of only one known rotary angle adjustment device in the drive from the first to the second Camshaft on both cylinder banks variable valve opening times on the actuated by the second camshaft Valves can be realized. In general, these will be the intake valves. It is also used in the drive the first camshaft from the crankshaft further rotation angle adjustment device is provided, then can with this the valve opening times of the exhaust valves can be variably adjusted and controlled by a Angle adjustment in the drive between the first to second camshaft, the intake valves can also variable opening times according to motor operation exhibit.
  • the pushrods of both the intake and The exhaust camshaft can be close together on the wall of the two cylinder banks, so that only little space is required and in the upper area of the Space between the two cylinder banks further aggregates, e.g. Parts of the intake system and the fuel processing system housed for the internal combustion engine can be.
  • the arrangement of the switching elements for optional Shorten the push rods for actuating a cylinder deactivation in the lower area of the V-shaped room allows between the two cylinder banks very simple construction of the valve train in the area of two cylinder heads.
  • the switching elements as hydraulic elements then the hydraulic cylinder can be guided through appropriate holes in the cylinder block consequences.
  • the control of these hydraulic elements is about parallel to the camshafts in the cylinder block running holes easily and economically possible.
  • the pushrods can be advantageous in their lower area generally with a hydraulic device be provided for valve clearance compensation, this with the hydraulic elements to shorten the pushrods can be combined.
  • Fig. 1 a section through a Internal combustion engine with two in a V-shape arranged cylinder banks in a schematic Shape;
  • a crankcase 1 there are two in V-shaped cylinder banks 3 with cylinders 4, in which are pistons 5, which are by means of connecting rods 6 hinged to a crankshaft 2 mounted in the crankcase 1 are.
  • pistons 5 Above the piston 5 is in the Cylinders 4 each have a combustion chamber 7.
  • Each cylinder bank 3 carries a cylinder head 8, which closes the combustion chambers 7.
  • intake and exhaust ports arranged to the combustion chambers 7, which means Valves 9 are controllable.
  • the valves 9 are of valve springs held in the closed position.
  • rocker arms 10 On the shafts of the Valves 9 are on rocker arms 10, which are on cylinder head 8 are pivoted and with pushrods 11.12 in Connect.
  • the exhaust camshaft 14 is by means of a chain drive 14 on one of the end faces of the internal combustion engine driven by the crankshaft 2.
  • the intake camshaft 13 is by means of a gear drive 17 on the other end of the engine from the exhaust camshaft 14 ago driven.
  • the Gear drive 17 with a rotation angle adjustment device provided so that the intake camshaft 13 opposite the Exhaust camshaft 14 during operation of the internal combustion engine for the purpose of changing valve opening times can be twisted.
  • Such a rotation angle adjustment device can also be provided on the chain drive 16 with which then the exhaust camshaft 14 and thus that of their driven intake camshaft 13 with respect to the crankshaft 2 can be rotated. This is a far-reaching one variable adjustment of the valve opening times to the motor requirements possible.
  • the intake camshaft 13 and the exhaust camshaft 14 are in the lower area of the room 15 in one between the two cylinder banks 3 running centrally Level 18 arranged in Fig. 1 by a dash-dotted line Line is shown.
  • the intake camshaft 13 lies close above the exhaust camshaft 14.
  • the pushrods 11, 12 are on their Ends facing camshafts 13, 14 with hydraulic elements 19 provided a switchable shortening of the rods 11.12 enable. This shortening can be continuous or in stages, thus allowing adjustment the valve opening times or a complete one Switching off individual cylinders 4 at partial load of the internal combustion engine.
  • the hydraulic elements 19 are parallel extending to the camshafts 13, 14 in the cylinder block Driven oil channels (not shown in the drawing). In addition to the hydraulic elements 19 or with them hydraulic valve lash adjusters are connected provided that an independent compensation of the valve clearance to back up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (6)

  1. Moteur à combustion interne, à deux rangées de cylindres (3) disposées en V, avec un vilebrequin (2), avec des soupapes (9) suspendues, commandant des canaux d'admission et d'échappement, actionnées par des culbuteurs (10), sur chaque cylindre (4), et avec des tiges de poussoir (11, 12), disposées chacune entre un arbre à cames (13, 14) se trouvant entre les rangées de cylindres (3) et un culbuteur (10), les tiges de poussoir (11, 12) étant susceptibles d'être raccourcies par l'intermédiaire d'un élément de commutation (19), dans le but de mettre hors service certains cylindres, caractérisé en ce qu'un arbre à cames d'admission (13) et un arbre à cames d'échappement (14) sont disposés au voisinage l'un de l'autre, l'arbre à cames d'admission (13) agissant sur les soupapes (9) des canaux d'admission par l'intermédiaire de tiges de poussoir (11) et de culbuteurs (10), et l'arbre à cames d'échappement (14) agissant sur les soupapes (9) des canaux d'échappement par des tiges de poussoir (12) et des culbuteurs (10), et l'arbre à cames d'échappement (14) étant entraíné par le vilebrequin (2), et l'arbre à cames d'admission (13) étant entraíné par l'arbre à cames d'échappement (14), par l'intermédiaire d'un dispositif de réglage d'angle de rotation.
  2. Moteur à combustion interne selon la revendication 1, caractérisé en ce que les deux arbres à cames (13, 14) sont disposés au voisinage et l'un au-dessus de l'autre, dans un plan (18) s'étendant centralement entre les deux rangées de cylindres (3).
  3. Moteur à combustion interne selon les revendications 1 et 2, caractérisé en ce que les éléments de commutation devant raccourcir les tiges de poussoir (11, 12) sont des éléments hydrauliques (19), coopérant chacun avec la tige de poussoir (11, 12) et commandés par des tuyauteries de commande s'étendant parallèlement aux arbres à cames (13, 14).
  4. Moteur à combustion interne selon la revendication 3, caractérisé en ce que la course de soupape est réglable de façon progressive continue entre une course maximale et une course nulle, à l'aide de l'élément hydraulique (19).
  5. Moteur à combustion interne selon la revendication 3 et 4, caractérisé en ce que les éléments hydrauliques (19) présentent un dispositif devant assurer la compensation du jeu des soupapes.
  6. Moteur à combustion interne selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce que l'entraínement de l'arbre à cames d'échappement (14) s'effectue depuis le vilebrequin (2), par l'intermédiaire d'un mécanisme de réglage d'angle de rotation.
EP99117325A 1998-09-23 1999-09-03 Moteur à combustion interne à 2 rangées de cylindres disposées en V Expired - Lifetime EP0990776B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843588A DE19843588A1 (de) 1998-09-23 1998-09-23 Brennkraftmaschine mit zwei in V-form angeordneten Zylinderbänken
DE19843588 1998-09-23

Publications (2)

Publication Number Publication Date
EP0990776A1 EP0990776A1 (fr) 2000-04-05
EP0990776B1 true EP0990776B1 (fr) 2004-03-24

Family

ID=7881943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99117325A Expired - Lifetime EP0990776B1 (fr) 1998-09-23 1999-09-03 Moteur à combustion interne à 2 rangées de cylindres disposées en V

Country Status (2)

Country Link
EP (1) EP0990776B1 (fr)
DE (2) DE19843588A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505592B1 (en) * 2001-09-07 2003-01-14 General Motors Corporation Valve train for twin cam three-valve engine
US10648374B2 (en) 2015-08-12 2020-05-12 Cummins Inc. Cam phasing system architecture
DE102016113054A1 (de) * 2016-07-15 2018-01-18 Man Diesel & Turbo Se Brennkraftmaschine und Baukastensystem für einen Ventiltrieb einer Brennkraftmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526813A (en) * 1975-07-05 1977-01-19 Nissan Motor Co Ltd Valve lift method for an internal combustion engine
US4169449A (en) * 1977-11-07 1979-10-02 Brock Horace T Jr Cylinder de-activator system
US4337739A (en) * 1980-03-24 1982-07-06 Jordan Edgar R Valve control mechanism for internal combustion engines
CA1133342A (fr) * 1980-03-28 1982-10-12 Laszlo Tamas Systeme de neutralisation d'un cylindre, et commande connexe
US4723516A (en) * 1985-11-25 1988-02-09 Slagley Michael W Valve open duration and timing controller
JPH03107511A (ja) * 1989-09-21 1991-05-07 Yamaha Motor Co Ltd バルブタイミング遅角装置
DE4212110A1 (de) * 1992-04-10 1993-10-14 Kloeckner Humboldt Deutz Ag Dieselbrennkraftmaschine
DE4405389A1 (de) * 1994-02-19 1995-08-24 Kloeckner Humboldt Deutz Ag V-förmige ausgebildete Brennkraftmaschine
US5560329A (en) * 1994-10-31 1996-10-01 General Motors Corporation Valvetrain for a pushrod engine

Also Published As

Publication number Publication date
DE19843588A1 (de) 2000-03-30
DE59908938D1 (de) 2004-04-29
EP0990776A1 (fr) 2000-04-05

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