EP0947672A3 - Variable valve control for an internal combustion engine - Google Patents

Variable valve control for an internal combustion engine Download PDF

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Publication number
EP0947672A3
EP0947672A3 EP99104523A EP99104523A EP0947672A3 EP 0947672 A3 EP0947672 A3 EP 0947672A3 EP 99104523 A EP99104523 A EP 99104523A EP 99104523 A EP99104523 A EP 99104523A EP 0947672 A3 EP0947672 A3 EP 0947672A3
Authority
EP
European Patent Office
Prior art keywords
cam
inlet
closing
outlet
valve
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.)
Withdrawn
Application number
EP99104523A
Other languages
German (de)
French (fr)
Other versions
EP0947672A2 (en
Inventor
Dieter Dr. Krauth
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 AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0947672A2 publication Critical patent/EP0947672A2/en
Publication of EP0947672A3 publication Critical patent/EP0947672A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F01L13/0047—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 the movement of the valves resulting from the sum of the simultaneous actions of at least two cams, the cams being independently variable in phase in respect of each other

Abstract

Eine variable Ventilsteuerung für eine Hubkolben-Brennkraftmaschine, die mindestens ein Einlaßventil (7a,7b) und mindestens ein Auslaßventil (8) aufweist, umfaßt eine Einlaß-Auslaß-Nockenwelle (2), auf der ein Einlaß-Öffnet-Nocken (4a,4b) zur Steuerung der Öffnungsfunktion des Einlaßventils (7a,7b) sowie ein Auslaßnocken (6) zur Steuerung des Auslaßventils (8) angeordnet ist, eine Einlaß-Schließt-Nockenwelle (3), auf der ein Einlaß-Schließt-Nocken (5) zur Steuerung der Schließfunktion des Einlaßventils (7a,7b) angeordnet ist, einen Einlaß-Betätigungshebel zur Übertragung der Stellbewegung des Einlaß-Öffnet-Nockens und des Einlaß-Schließt-Nockens auf das Einlaßventil (7a,7b), einen Auslaß-Betätigungshebel (10) zur Übertragung der Stellbewegung des Auslaßnockens (6) auf das Auslaßventil (8), und eine Einrichtung zur Änderung der Phasenlage zwischen den beiden Nockenwellen (2,3).A variable valve control for a reciprocating piston internal combustion engine, the at least one inlet valve (7a, 7b) and at least has an exhaust valve (8), comprises an intake-exhaust camshaft (2), on which an inlet-open cam (4a, 4b) for controlling the Opening function of the inlet valve (7a, 7b) and an outlet cam (6) for Control of the exhaust valve (8) is arranged, an intake-closing camshaft (3), on which an inlet-closing cam (5) for Control of the closing function of the inlet valve (7a, 7b) is arranged, an inlet actuating lever for transmitting the actuating movement of the inlet-open cam and the inlet-open cam the inlet valve (7a, 7b), an outlet actuating lever (10) for transmission the actuating movement of the exhaust cam (6) on the exhaust valve (8), and a device for changing the phase position between the two Camshafts (2,3).

Der Abstand der Mittelebenen von Einlaß-Schließt-Nocken (4a,4b) und Auslaßnocken (6) ist kleiner als die Summe von halber Auslaßnockenbreite und halber Einlaß-Schließt-Nockenbreite, wobei der die Nockenerhebung umfassende Kopfkreis des Auslaßnockens (6) sich mit dem entsprechenden Kopfkreis des Einlaß-Schließt-Nockens (5) überschneidet und die Nockenerhebungen des Auslaßnockens (6) und des Einlaß-Schließt-Nockens (5) berührungsfrei miteinander kämmen.

Figure 00000001
The distance between the center planes of the inlet-closing cam (4a, 4b) and the outlet cam (6) is smaller than the sum of half the outlet cam width and half the inlet-closing cam width, with the tip circle of the outlet cam (6) comprising the cam elevation coinciding with the overlaps the corresponding tip circle of the inlet-closing cam (5) and comb the cam elevations of the outlet cam (6) and the inlet-closing cam (5) without contact.
Figure 00000001
EP99104523A 1998-04-02 1999-03-06 Variable valve control for an internal combustion engine Withdrawn EP0947672A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19814800A DE19814800A1 (en) 1998-04-02 1998-04-02 Variable valve control for a reciprocating piston internal combustion engine
DE19814800 1998-04-02

Publications (2)

Publication Number Publication Date
EP0947672A2 EP0947672A2 (en) 1999-10-06
EP0947672A3 true EP0947672A3 (en) 2000-08-02

Family

ID=7863367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99104523A Withdrawn EP0947672A3 (en) 1998-04-02 1999-03-06 Variable valve control for an internal combustion engine

Country Status (3)

Country Link
US (1) US6058896A (en)
EP (1) EP0947672A3 (en)
DE (1) DE19814800A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1306527B1 (en) * 2001-10-25 2008-01-02 Ford Global Technologies, LLC Diesel engine with variable compression ratio
DE102007040697A1 (en) 2007-08-29 2009-03-05 Volkswagen Ag Internal combustion engine
DE102014003466A1 (en) * 2014-03-11 2015-09-17 Meta Motoren- Und Energie-Technik Gmbh Device and method for the variable control of a valve of an internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE885719A (en) * 1980-10-15 1981-02-02 Goederen Arie C De PISTON COMBUSTION ENGINE WITH ADJUSTABLE VALVE OPENING DURATION
DE3402605A1 (en) * 1984-01-26 1985-08-01 Audi AG, 8070 Ingolstadt Valve control for a reciprocating piston internal combustion engine
GB2180597A (en) * 1985-09-13 1987-04-01 Frederick Arthur Summerlin Valve control
US5592906A (en) * 1993-07-06 1997-01-14 Meta Motoren- Und Energie-Technik Gmbh Method and device for variable valve control of an internal combustion engine
DE19600536A1 (en) * 1996-01-09 1997-07-10 Meta Motoren Energietech Device for variable control of inlet valve of combustion engine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3217203A1 (en) * 1981-05-15 1982-12-02 Honda Giken Kogyo K.K., Tokyo VARIABLE VALVE CONTROL
US4546735A (en) * 1984-01-23 1985-10-15 Southwest Research Institute Valve actuator
US4862845A (en) * 1988-05-10 1989-09-05 Borg-Warner Transmission And Engine Components Corporation Variable camshaft timing system
GB9018558D0 (en) * 1990-08-23 1990-10-10 Ricardo Group Plc Valve gear for internal combustion engines
US5052350A (en) * 1990-11-02 1991-10-01 King Brian T Device to combine the motions of two camlobes differentially phased
ATE158058T1 (en) * 1991-04-24 1997-09-15 Donald Charles Wride VALVE DRIVE DEVICE
US5241928A (en) * 1992-03-13 1993-09-07 Suzuki Motor Corp. Movable valve device for engine
JP3362227B2 (en) * 1992-12-30 2003-01-07 メタ モトーレン‐ ウント エネルギー‐テヒニク ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Apparatus for variably controlling the valves of an internal combustion engine, particularly for non-throttling load control of a spark ignition engine
DE4301453C2 (en) * 1993-01-20 1995-01-05 Meta Motoren Energietech Variable valve control of internal combustion engines
DE19701202A1 (en) * 1997-01-15 1998-07-23 Daimler Benz Ag Variable valve control for internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE885719A (en) * 1980-10-15 1981-02-02 Goederen Arie C De PISTON COMBUSTION ENGINE WITH ADJUSTABLE VALVE OPENING DURATION
DE3402605A1 (en) * 1984-01-26 1985-08-01 Audi AG, 8070 Ingolstadt Valve control for a reciprocating piston internal combustion engine
GB2180597A (en) * 1985-09-13 1987-04-01 Frederick Arthur Summerlin Valve control
US5592906A (en) * 1993-07-06 1997-01-14 Meta Motoren- Und Energie-Technik Gmbh Method and device for variable valve control of an internal combustion engine
DE19600536A1 (en) * 1996-01-09 1997-07-10 Meta Motoren Energietech Device for variable control of inlet valve of combustion engine

Also Published As

Publication number Publication date
US6058896A (en) 2000-05-09
EP0947672A2 (en) 1999-10-06
DE19814800A1 (en) 1999-10-14

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