WO1992012333A1 - Vorrichtung zum betätigen der ventile eines hubkolbenmotors - Google Patents
Vorrichtung zum betätigen der ventile eines hubkolbenmotors Download PDFInfo
- Publication number
- WO1992012333A1 WO1992012333A1 PCT/EP1991/002374 EP9102374W WO9212333A1 WO 1992012333 A1 WO1992012333 A1 WO 1992012333A1 EP 9102374 W EP9102374 W EP 9102374W WO 9212333 A1 WO9212333 A1 WO 9212333A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camshaft
- switching cam
- radial pin
- cam
- groove
- Prior art date
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
- 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
- F01L13/0005—Deactivating valves
Definitions
- the invention relates to a device for actuating the valves of a reciprocating piston engine according to the preamble of claim 1.
- a reciprocating piston engine with two cylinders has two intake valves per cylinder, which are actuated by a camshaft.
- One inlet valve is operated continuously with a fixed cam, the other with a switch cam only when it is coupled to the camshaft.
- a cone connection between the switching cam and the camshaft serves as the coupling.
- the control cam When the control cam is pressurized, it is displaced axially against the spring force on the camshaft and frictionally coupled to the camshaft by the cone connection.
- the disadvantage here is that a high pressure is required and a correspondingly strong return spring is required to connect the switch cam to the camshaft. The pressure could be lower if a cone with a lower pitch is used, but in this case there is a risk of self-locking, which cannot be canceled by a strong return spring.
- a camshaft 1 actuating the intake valves of a reciprocating piston engine is driven by a chain wheel 2.
- a chain wheel 2 For the sake of clarity, only a portion of the camshaft 1 and only one inlet valve 3 is shown schematically in FIG. 1, which is actuated by a fixed cam 4 against the force of a valve spring 5. With further fixed cams 6 and 7, other intake valves are opened in a cyclical sequence with each revolution of the camshaft 1.
- a switching cam 8 is arranged between the fixed cams 4 and 6. It is rotatably mounted on the camshaft 1 and can be positively connected to it by means of a radial pin 9.
- Fig. 2 shows the switching cam 8 with a radial pin 9.
- the radial pin 9 is drawn in dashed lines in the non-switched state and lies within the camshaft 1. Drawn with solid lines, it is in the switched state and engages with its cylindrical head part 10 in a groove l ⁇ of the switching cam 8 a. The non-switched position of the radial pin is shown more clearly in FIG. 3.
- a disk 12 is riveted, against which a restoring spring 13 rests, which is supported on its other side against a spring cup 14 pressed into the camshaft 1.
- the switching cam 8 is held in the rest position by the valve spring 5 and the valve tappet 16 resting on the base circle 15 of the switching cam 8.
- the camshaft 1 rotates freely in it. If hydraulic pressure is now applied to the end face of the head part 10 via a feed channel 17 of a bearing block 18, a central channel 19 of the camshaft 1 and slots 20 in the spring cup 14, the head part 10 is pushed along a ramp 21 in the switching cams 8 until it strikes on one side 21 of the groove 11 and is then shot completely into the groove 11, taking the switching cam 8 with it.
- the one intake valve is periodically opened continuously by the camshaft being fixed.
- a switching cam is assigned to the other intake valve, which can be positively connected to the camshaft by means of the radial pin depending on the engine speed and then actuates the associated intake valve.
- a pressure of approx. 2 bar is sufficient to switch the radial pin, which the engine oil pump is already available from an engine speed of approx. 1200 rpm.
- the fixed cams 4, 6, 7 are case hardened and rigidly connected to the camshaft 1 by electron beam welding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914100763 DE4100763A1 (de) | 1991-01-12 | 1991-01-12 | Vorrichtung zum betaetigen der ventile eines hubkolbenmotors |
DEP4100763.8 | 1991-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992012333A1 true WO1992012333A1 (de) | 1992-07-23 |
Family
ID=6422908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1991/002374 WO1992012333A1 (de) | 1991-01-12 | 1991-12-11 | Vorrichtung zum betätigen der ventile eines hubkolbenmotors |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0527970A1 (de) |
DE (1) | DE4100763A1 (de) |
WO (1) | WO1992012333A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008033230A1 (de) | 2008-01-04 | 2009-07-09 | Hydraulik-Ring Gmbh | Doppelter Nockenwellenversteller in Schichtaufbau |
DE102008023098A1 (de) | 2008-05-09 | 2009-12-17 | Hydraulik-Ring Gmbh | Doppelter Nockenwellenversteller in Schichtaufbau |
US7841311B2 (en) | 2008-01-04 | 2010-11-30 | Hilite International Inc. | Variable valve timing device |
EP2415979A1 (de) | 2010-08-04 | 2012-02-08 | Hydraulik-Ring GmbH | Nockenwellenversteller |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4416505A1 (de) * | 1994-05-10 | 1995-11-16 | Bayerische Motoren Werke Ag | Nockenwelle mit verdrehbaren Nocken |
DE19706361B4 (de) * | 1997-02-19 | 2005-02-17 | Audi Ag | Vorrichtung zur Betätigung der Gaswechselventile einer Brennkraftmaschine |
EP4007844A4 (de) * | 2019-09-20 | 2023-11-01 | Cummins, Inc. | Mechanisch zeitgesteuertes zylinderdeaktivierungssystem |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4545342A (en) * | 1983-06-29 | 1985-10-08 | Honda Giken Kogyo Kabushiki Kaisha | Method and apparatus for the control of valve operations in internal combustion engine |
DE3920938A1 (de) * | 1988-07-06 | 1990-01-11 | Volkswagen Ag | Steuervorrichtung fuer ladungswechselventile einer brennkraftmaschine mit zumindest einem desaktivierbaren nocken auf einer nockenwelle |
DE3713646C2 (de) * | 1986-04-25 | 1990-04-26 | Fuji Jukogyo K.K., Tokio/Tokyo, Jp |
-
1991
- 1991-01-12 DE DE19914100763 patent/DE4100763A1/de not_active Withdrawn
- 1991-12-11 EP EP19920900475 patent/EP0527970A1/de not_active Ceased
- 1991-12-11 WO PCT/EP1991/002374 patent/WO1992012333A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4545342A (en) * | 1983-06-29 | 1985-10-08 | Honda Giken Kogyo Kabushiki Kaisha | Method and apparatus for the control of valve operations in internal combustion engine |
DE3713646C2 (de) * | 1986-04-25 | 1990-04-26 | Fuji Jukogyo K.K., Tokio/Tokyo, Jp | |
DE3920938A1 (de) * | 1988-07-06 | 1990-01-11 | Volkswagen Ag | Steuervorrichtung fuer ladungswechselventile einer brennkraftmaschine mit zumindest einem desaktivierbaren nocken auf einer nockenwelle |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 003 (M-349)9. Januar 1985 & JP,A,59 155 513 ( MITSUBISHI ) 4. September 1984 * |
PATENT ABSTRACTS OF JAPAN vol. 011, no. 028 (M-557)27. Januar 1987 & JP,A,61 201 803 ( HONDA ) 6. September 1986 * |
PATENT ABSTRACTS OF JAPAN vol. 011, no. 397 (M-655)25. Dezember 1987 & JP,A,62 165 518 ( SHIZUO SATO ) 22. Juli 1987 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008033230A1 (de) | 2008-01-04 | 2009-07-09 | Hydraulik-Ring Gmbh | Doppelter Nockenwellenversteller in Schichtaufbau |
DE102008033230B4 (de) * | 2008-01-04 | 2010-05-27 | Hydraulik-Ring Gmbh | Doppelter Nockenwellenversteller in Schichtaufbau |
US7841311B2 (en) | 2008-01-04 | 2010-11-30 | Hilite International Inc. | Variable valve timing device |
US8201528B2 (en) | 2008-01-04 | 2012-06-19 | Hilite Germany Gmbh | Doubled cam shaft adjuster in layered construction |
DE102008023098A1 (de) | 2008-05-09 | 2009-12-17 | Hydraulik-Ring Gmbh | Doppelter Nockenwellenversteller in Schichtaufbau |
EP2415979A1 (de) | 2010-08-04 | 2012-02-08 | Hydraulik-Ring GmbH | Nockenwellenversteller |
DE102010033296A1 (de) | 2010-08-04 | 2012-02-09 | Hydraulik-Ring Gmbh | Nockenwellenversteller, insbesondere mit Nockenwelle |
US8677960B2 (en) | 2010-08-04 | 2014-03-25 | Hilite Germany Gmbh | Camshaft adjuster, in particular with camshaft |
Also Published As
Publication number | Publication date |
---|---|
EP0527970A1 (de) | 1993-02-24 |
DE4100763A1 (de) | 1992-07-16 |
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