EP0990776B1 - Brennkraftmaschine mit zwei in V-Form angeordneten Zylinderbänken - Google Patents
Brennkraftmaschine mit zwei in V-Form angeordneten Zylinderbänken Download PDFInfo
- 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
Links
Images
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)
Description
Claims (6)
- Brennkraftmaschine mit zwei in V-Form angeordneten Zylinderbänken (3) mit einer Kurbelwelle (2), mit hängenden über Kipphebel (10) betätigten Einlaß- und Auslaßkanäle steuernden Ventilen (9) an jedem Zylinder (4) und mit Stösselstangen (11,12), die jeweils zwischen einer im Raum zwischen den Zylinderbänken (3) befindlichen Nockenwelle (13,14) und einem Kipphebel (10) angeordnet sind, wobei die Stösselstangen (11,12) zum Zwecke der Zylinderabschaltung über ein Schaltelement (19) verkürzbar sind, dadurch gekennzeichnet, daß eine Einlaßnockenwelle (13) und eine Auslaßnockenwelle (14) benachbart angeordnet sind, wobei die Einlaßnockenwelle (13) über Stösselstangen (11) und Kipphebel (10) auf die Ventile (9) der Einlaßkanäle und die Auslaßnockenwelle (14) über Stösselstangen (12) und Kipphebel (10) auf die Ventile (9) der Auslaßkanäle einwirkt und wobei die Auslaßnockenwelle (14) von der Kurbelwelle (2) angetrieben ist und die Einlaßnockenwelle (13) über eine Drehwinkelverstellvorrichtung von der Auslaßnockenwelle (14) angetrieben ist.
- Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Nockenwellen (13,14) in einer zwischen den beiden Zylinderbänken (3) mittig verlaufenden Ebene (18) benachbart übereinander angeordnet sind.
- Brennkraftmaschine nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Schaltelemente zum wahlweisen Verkürzen der Stösselstangen (11,12) Hydraulikelemente (19) sind, die jeweils mit der Stösselstange (11,12) zusammenwirken und von parallel zu den Nockenwellen (13,14) verlaufenden Steuerleitungen angesteuert sind.
- Brennkraftmaschine nach Anspruch 3, dadurch gekennzeichnet, daß mit dem Hydraulikelement (19) der Ventilhub zwischen einem Maximalhub und Nullhub stufenlos einstellbar ist.
- Brennkraftmaschine nach den Ansprüchen 3 und 4, dadurch gekennzeichnet, daß die Hydraulikelemente (19) eine Einrichtung zum Ventilspielausgleich aufweisen.
- Brennkraftmaschine nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Antrieb der Auslaßnockenwelle (14) von der Kurbelwelle (2) über einen Drehwinkelverstellmechanismus erfolgt.
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 (de) | 2000-04-05 |
EP0990776B1 true EP0990776B1 (de) | 2004-03-24 |
Family
ID=7881943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99117325A Expired - Lifetime EP0990776B1 (de) | 1998-09-23 | 1999-09-03 | Brennkraftmaschine mit zwei in V-Form angeordneten Zylinderbänken |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0990776B1 (de) |
DE (2) | DE19843588A1 (de) |
Families Citing this family (3)
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 |
EP3334909B1 (de) * | 2015-08-12 | 2024-03-13 | Cummins, Inc. | Architektur eines nockenwellenverstellsystems |
DE102016113054A1 (de) * | 2016-07-15 | 2018-01-18 | Man Diesel & Turbo Se | Brennkraftmaschine und Baukastensystem für einen Ventiltrieb einer Brennkraftmaschine |
Family Cites Families (9)
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 (en) * | 1980-03-28 | 1982-10-12 | Laszlo Tamas | Engine cylinder cutout system and control therefor |
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 |
-
1998
- 1998-09-23 DE DE19843588A patent/DE19843588A1/de not_active Withdrawn
-
1999
- 1999-09-03 DE DE59908938T patent/DE59908938D1/de not_active Expired - Lifetime
- 1999-09-03 EP EP99117325A patent/EP0990776B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59908938D1 (de) | 2004-04-29 |
DE19843588A1 (de) | 2000-03-30 |
EP0990776A1 (de) | 2000-04-05 |
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