DE3531000A1 - Device for reducing the throttle losses in piston engines under partial load by phase control of the valves - Google Patents

Device for reducing the throttle losses in piston engines under partial load by phase control of the valves

Info

Publication number
DE3531000A1
DE3531000A1 DE19853531000 DE3531000A DE3531000A1 DE 3531000 A1 DE3531000 A1 DE 3531000A1 DE 19853531000 DE19853531000 DE 19853531000 DE 3531000 A DE3531000 A DE 3531000A DE 3531000 A1 DE3531000 A1 DE 3531000A1
Authority
DE
Germany
Prior art keywords
control
valves
valve
control cams
cams
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.)
Ceased
Application number
DE19853531000
Other languages
German (de)
Inventor
Herbert Dipl.-Ing. 8000 München Gohle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19853531000 priority Critical patent/DE3531000A1/en
Publication of DE3531000A1 publication Critical patent/DE3531000A1/en
Ceased legal-status Critical Current

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
    • F01L1/12—Transmitting gear between valve drive and valve
    • 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
    • F01L13/0015—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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The necessary variability of the timing points of a valve timing gear, primarily for internal combustion engines, for preventing throttle losses in the induction and working stroke at partial load is realised in the present application in the same way as a conventional cam shaft control, with recovery of the energy expended in valve actuation, in that the opening and closing sequence is performed by 2 different control cams running at an adjustable phase angle to the crankshaft. At the same time the valves are spring-loaded in the closing direction in the conventional way. A mechanical drive is chosen in which a correspondingly supported control lever (for example a rocker 5) is so actuated by the two control cams (1 and 2) that the valve is opened only when both control cams are run out (in position 1). By corresponding selection of the phase position of the four control cams - two per valve - the four timing points can be adjusted as required. <IMAGE>

Description

Vorrichtung zur Verringerung der Drosselverluste bei Kolbenmotoren unter Teillast durch Phasenanschnittsteuerung der Ventile. Anlage 2 zur Anmeldung Herbert Gohle vom 29. 8. 1985Device for reducing throttle losses in piston engines under partial load by phase control of the valves. Annex 2 to the registration of Herbert Gohle dated August 29, 1985

Bezugnehmend auf meine Anmeldungen vom 30.5.85 (Az. P 35 19 387.5) und vom 5.6.85 (Az. P 35 20 215.7), in denen jeweils eine hydraulisch arbeitende Vorrichtung zur Regelung der Steuerzeiten einer Ventilsteuerung vornehmlich für Brennkraftmaschinen beschrieben ist, die in einem Kreisprozess die zum Öffnen der Ventile gegen die Federkraft aufgewendete Energie wieder zurückgewinnt, wird hier eine mechanisch arbeitende Vorrichtung beschrieben, die die angestrebten Ziele: beliebige Regelbarkeit aller 4 Steuerpunkte und Energierückgewinnung, ebenfalls erreicht.With reference to my registrations from May 30th, 1985 (Az. P 35 19 387.5) and from 5.6.85 (Az. P 35 20 215.7), in each of which a hydraulically operating device for regulating the control times of a valve control primarily for internal combustion engines is described, the energy expended to open the valves against the spring force again in a cycle recovered, a mechanically working device is described here, which the desired goals: any controllability of all 4 control points and Energy recovery, also achieved.

Es wird der schon in der Anmeldung v. 5.6.85 (P 35 20 215.7)dargestellte Gedanke verwendet, daß mit den 2 Steuernocken 4 verschiedene Zustände dargestellt werden können (00, 01, 10, 11, dabei bezeichnet 0 jeweils die Ruhelage, vgl. Abb.1). Die Steuernocken (1,2) arbeiten derart auf einen Steuerhebel (3, bzw. Wippe 5), daß das Ventil (7) nur im Zustand 11 geöffnet ist (UND-Schaltung, Abb.1), und daß in den anderen Zuständen des Ventil geschlossen bleibt.The v. 5.6.85 (P 35 20 215.7) The idea used is that 4 different states can be represented with the 2 control cams (00, 01, 10, 11, where 0 denotes the Rest position, see Fig. 1). The control cams (1,2) work in this way on one Control lever (3, or rocker 5) that the valve (7) is only open in state 11 (AND circuit, Fig.1), and that in the other states of the valve remains closed.

Der hier beschriebene mechanische Ventilantrieb kann dabei auf verschiedene Weise erfolgen: Der Steuerhebel kann als Wippe 5 ausgebildet werden, die in der Achse des Ventils 7 in einer Führung 6 gelagert ist und deren Enden von den Steuernocken 1 u.2 betätigt werden (Abb.2). Dabei ist der Ventilhub der halbe Nockenhub und die Kräfte sind entsprechend klein. In Abb.3 bewegt der Steuernocken 1 in klassischer Weise den als Kipp- oder Schlepphebel ausgebildeten Steuerhebel 3, während Steuernocken 2 die Lage des Steuerhebel-Lagerpunktes im Sinne des angestrebten Zwecks verändert. Werden dabei die Steuernocken auf verschiedenen Nockenwellen angeordnet (vgl. letzter Absatz), ist es möglich, beide Punkte des Steuerhebels 3 direkt zu betätigen. Werden die Steuernocken koaxial auf einer Welle angeordnet, ist ein Zwischenhebel 4 zur Bedienung des 2. Punktes am Steuerhebel 3 erforderlich. Von diesen Möglichkeiten ist die Wippe (5, Abb.2) die einfachste Lösung.The mechanical valve drive described here can be used in various ways Way done: The control lever can be designed as a rocker 5, which is mounted in the axis of the valve 7 in a guide 6 and the ends of the control cam 1 and 2 are operated (Fig.2). The valve lift is the half the cam stroke and the forces are correspondingly small. In Fig.3 the Control cam 1 designed as a rocker arm or rocker arm control lever 3, while control cam 2 the position of the Control lever bearing point changed in terms of the intended purpose. If the control cams are arranged on different camshafts (cf. last paragraph), it is possible to operate both points on control lever 3 directly. If the control cams are arranged coaxially on a shaft An intermediate lever 4 is required to operate the 2nd point on the control lever 3. Of these possibilities, the rocker (5, Fig.2) is the one simplest solution.

Die i.G. 4 Steuernocken je Zylinder - jeweils 2 für das Einlaß- und das Auslaßventil - sitzen entweder auf verschiedenen Nockenwellen mit jeweiligem Antrieb der die Variation der Phasenlage erlaubt (bekannte Ausführungsmöglichkeiten), oder die Steuernocken werden koaxial auf einer zentralen Welle angeordnet. Dabei ist die zentrale Welle (ähnlich wie in DE-OS 26 21 363, Förster, Daimler-Benz) achsial gegenüber den Steuernocken und dem Antriebsrad verschieblich, die mit artentypischen Steilgewinden auf der Welle sitzen, so daß bei einer achsialen Verschiebung dieser Welle die Phasenlage der einzelnen Steuernocken gegenüber der Kurbelwelle verändert wird. Zwischen diesen Extremen sind auch die Kombinationsmöglichkeiten offen: statt der 4 verschiedenen Nockenwellen können 2 koaxiale jeweils für die Steuernocken 1 u. 2, oder, wenn nur 2 Steuerpunkte beweglich sein sollen, eine koaxiale und eine feste Nockenwelle angeordnet werden.The i.G. 4 control cams per cylinder - 2 each for the inlet and the Exhaust valve - either sit on different camshafts with a respective drive that allows the phase position to be varied (known Design options), or the control cams are arranged coaxially on a central shaft. The central wave (similar to in DE-OS 26 21 363, Förster, Daimler-Benz) axially displaceable with respect to the control cam and the drive wheel, which have steep threads typical of the species sit on the shaft, so that with an axial displacement of this shaft, the phase position of the individual control cams changes with respect to the crankshaft will. Between these extremes there are also possible combinations: instead of the 4 different camshafts, 2 coaxial camshafts can be used for the control cams 1 and 2, or, if only 2 control points are to be movable, a coaxial and a fixed camshaft can be arranged.

Claims (4)

Vorrichtung zur Verringerung der Drosselverluste bei Kolbenmotoren unter Toi Hast durch Phasenanschnittsteuerung der Ventile. Anlage 3 zur Anmeldung Herbert Gohle vom 29. 8. 1985 PatentansprücheDevice to reduce the throttle losses in piston engines under Toi Hast by phase control of the valves. Annex 3 to the Herbert Gohle application dated August 29, 1985 patent claims 1.) Vorrichtung zur Verringerung der Drosselverluste bei Brennkraftmaschinen dadurch, daß die Lastregelung ausschließlich mit Hilfe einer Ventilsteuerung mit variablen Steuerzeiten so erfolgt, daß die Füllung ohne Drosselung durch Variation der Einlaßzeit (d.h. Vorverlegung des Einlaßendes bei geringerer Last) reguliert wird, und daß Drosselverluste am Ende des Arbeitshubs durch entspr. der Füllung richtige Wahl des Auslaßbeginns (d.h. Spätverlegung bei kleiner Füllung bis, bei Überexpansion, in den Ausstoßhub hinein) vermieden werden, und daß die beim öffnen der Ventile aufgewendete Energie in einem Kreisprozess beim Schließen derselben dadurch zurückgewonnen wird, daß die Ventile zum (regelbar) richtigen Zeitpunkt mit Hilfe der Schließflanke eines 2. Steuernockens abgelassen werden, der zur Rückgewinnung der Energie wie beim klassischen Antrieb den Weg vorgibt, dadurch gekennzeichnet, daß die Ventile (7) in bewährter Form in Schließrichtung federbelastet sind und daß die Ventilbetätigung mechanisch durch 2, in ihrer Phasenlage untereinander und zur Kurbelwelle regelbare Steuernocken (1,2) geschieht, die beide so auf einen Steuerhebel (3, bzw. Wippe 5) wirken, daß das Ventil nur geöffnet ist, wenn beide Steuernocken in Stellung 1 sind (UND-Schaltung).1.) Device for reducing throttle losses in internal combustion engines in that the load control is carried out exclusively with the aid of a valve control with variable timing so that the filling is carried out without throttling by varying the intake time (i.e. moving the intake end forward with a lower Load) is regulated, and that throttling losses at the end of the working stroke by the correct choice of the outlet start according to the filling (i.e. late shift at small filling up to, in the case of over-expansion, into the exhaust stroke) can be avoided, and that the energy expended when opening the valves in one Cycle process when closing the same is recovered in that the Valves can be drained at the (controllable) correct time with the help of the closing edge of a 2nd control cam, which is used to recover the energy such as sets the course in the classic drive, characterized in that the valves (7) are spring-loaded in the closing direction in a tried and tested manner and that the valve actuation mechanically by 2, in their phase relation to each other and control cams (1,2) which can be regulated to the crankshaft, both of which act on a control lever (3 or rocker 5) so that the valve is only open when both control cams are in position 1 (AND circuit). 2.) Vorrichtung entspr. Anspruch 1, dadurch gekennzeichnet, daß der auf verschiedene Arten gelagerte Steuerhebel 3 (bzw. 5, Abb.2 u.3) von den 2 Steuernocken (1,2) an 2 verschiedenen Punkten (evtl. unter Einschaltung eines Zwischenhebels 4) so betätigt wird, daß die in Anspruch 1 genannte UND-Schaltung erreicht wird.2.) Device according to claim 1, characterized in that the on different types of mounted control levers 3 (or 5, Fig. 2 and 3) from the 2 Control cam (1,2) at 2 different points (possibly with activation an intermediate lever 4) is operated so that the AND circuit mentioned in claim 1 is achieved. 3.) Vorrichtung entspr. Anspruch 1, dadurch gekennzeichnet, daß durch die vom Gaspedal (Lastregelung) regelbare Einstellung der Phasenlage der beiden Steuernocken - je Ventil - zur Kurbelwelle alle vier Steuerpunkte der Ventile (also auch die im 1. Anspruch genannte Spätverlegung des Auslaßbeginns) beliebig eingestellt werden können.3.) Device according to claim 1, characterized in that by the from the accelerator pedal (load control) adjustable setting of the phase position of the two control cams - per valve - to the crankshaft all four control points of the Valves (including the delayed relocation of the exhaust start mentioned in the first claim) can be set as desired. 4.) Vorrichtung entspr. Anspruch 1, dadurch gekennzeichnet, daß die Steuernocken entweder auf maximal 4, durch vom Gaspedal gesteuert achsial verschiebtiche, auf Steilgewinden sitzende Antriebsräder angetriebenen Nockenwellen - jew. 2 je Einlaß- und Auslaß-Ventilgruppe - angebracht sind, oder daß sie koaxial derart in einer Achse (oder auch 2 Achsen) angeordnet sind, daß die einzelnen Steuernocken und das Antriebsrad mit artentypischen Steilgewinden auf einer vom Gaspedal gesteuert achsial gegenüber den Steuernocken und dem Antriebsrad verschieblichen zentralen Welle laufen, so daß sie entspr. der Gaspedalstellung jeweils die richtige Phasenlage zur Kurbelwelle haben.4.) Device according to claim 1, characterized in that the Control cams either to a maximum of 4, controlled axially by the accelerator pedal sliding, driven drive wheels seated on steep threads Camshafts - 2 each for each inlet and outlet valve group - are attached, or that they are arranged coaxially in one axis (or 2 axes) that the individual control cams and the drive wheel with species-typical Steep threads run on a central shaft controlled by the accelerator pedal axially relative to the control cam and the drive wheel, see above that they each have the correct phase position to the crankshaft according to the accelerator pedal position.
DE19853531000 1985-08-30 1985-08-30 Device for reducing the throttle losses in piston engines under partial load by phase control of the valves Ceased DE3531000A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853531000 DE3531000A1 (en) 1985-08-30 1985-08-30 Device for reducing the throttle losses in piston engines under partial load by phase control of the valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853531000 DE3531000A1 (en) 1985-08-30 1985-08-30 Device for reducing the throttle losses in piston engines under partial load by phase control of the valves

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DE3531000A1 true DE3531000A1 (en) 1986-08-28

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3725448A1 (en) * 1987-07-31 1989-02-09 Rainer Bartsch Valve timing gear for varying valve lift and valve opening time
DE4244550A1 (en) * 1992-12-30 1994-07-07 Meta Motoren Energietech Device for variably controlling valves in IC engine
DE4244551A1 (en) * 1992-12-30 1994-07-07 Meta Motoren Energietech Variable control system for combustion engine valves
DE4300487A1 (en) * 1993-01-11 1994-07-14 Meta Motoren Energietech Valve play adjustment mechanism for IC engine
DE4300684A1 (en) * 1993-01-13 1994-07-14 Meta Motoren Energietech Valve drive for variable control of IC engine
WO1994016202A1 (en) * 1992-12-30 1994-07-21 Meta Motoren- Und Energie-Technik Gmbh Device for the variable control of the valves of internal combustion engines, especially for the chokeless load control of four-stroke engines
WO1995002116A1 (en) * 1993-07-06 1995-01-19 Meta Motoren- Und Energie-Technik Gmbh Variable control process and device for an internal combustion engine valve
US5431132A (en) * 1993-01-20 1995-07-11 Meta Motoren-Und Energie-Technik Gmbh Variable valve gear of internal combustion engines
US5586527A (en) * 1992-12-30 1996-12-24 Meta Motoren-Und Energie-Technik Gmbh Device for the variable control of the valves of internal combustion engines, more particularly for the throttle-free load control of 4-stroke engines
WO2003046355A1 (en) * 2001-11-26 2003-06-05 Ina-Schaeffler Kg Method and device for coordinating the filling of a cylinder in a multicylinder internal combustion engine
WO2004067922A1 (en) 2003-01-30 2004-08-12 Mahle Ventiltrieb Gmbh Valve control
DE10357083A1 (en) * 2003-12-06 2005-06-30 Ina-Schaeffler Kg Variable valve drive for external ignition combustion engine has lift function adjustment auxiliary cam on secondary camshaft rotating at primary camshaft revolution rate, actuating element pivot point guided on auxiliary cam
WO2006000004A2 (en) * 2004-06-24 2006-01-05 Avl List Gmbh Internal combustion engine
DE102007049110A1 (en) * 2007-10-12 2009-04-16 Volkswagen Ag Internal-combustion engine i.e. diesel engine, for motor vehicle, has rocker tiltable around pivot axis and arranged such that shafts acts in corresponding areas, which are arranged at opposite sides of rocker with respect to pivot axis
US20120055426A1 (en) * 2010-09-08 2012-03-08 Gm Global Technology Operations, Inc. Engine including variable valve lift mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2049737B (en) * Tatra, N.P., Koprzivnice (Tschechoslowakei) Valve control for piston internal combustion engines
US1885796A (en) * 1930-02-15 1932-11-01 Eoulet Georges Valve operating mechanism
DE3418361A1 (en) * 1984-05-17 1984-10-18 Herbert Dipl.-Ing. 8000 München Gohle Device for reducing the throttle losses in piston engines under partial load by phase control of the valves
US4535733A (en) * 1981-05-15 1985-08-20 Honda Giken Kogyo Kabushiki Kaisha Variable valve timing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2049737B (en) * Tatra, N.P., Koprzivnice (Tschechoslowakei) Valve control for piston internal combustion engines
US1885796A (en) * 1930-02-15 1932-11-01 Eoulet Georges Valve operating mechanism
US4535733A (en) * 1981-05-15 1985-08-20 Honda Giken Kogyo Kabushiki Kaisha Variable valve timing apparatus
DE3418361A1 (en) * 1984-05-17 1984-10-18 Herbert Dipl.-Ing. 8000 München Gohle Device for reducing the throttle losses in piston engines under partial load by phase control of the valves

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3725448A1 (en) * 1987-07-31 1989-02-09 Rainer Bartsch Valve timing gear for varying valve lift and valve opening time
DE4244550C2 (en) * 1992-12-30 1998-05-28 Meta Motoren Energietech Device for rotating camshafts of internal combustion engines
US5586527A (en) * 1992-12-30 1996-12-24 Meta Motoren-Und Energie-Technik Gmbh Device for the variable control of the valves of internal combustion engines, more particularly for the throttle-free load control of 4-stroke engines
WO1994016202A1 (en) * 1992-12-30 1994-07-21 Meta Motoren- Und Energie-Technik Gmbh Device for the variable control of the valves of internal combustion engines, especially for the chokeless load control of four-stroke engines
DE4244550A1 (en) * 1992-12-30 1994-07-07 Meta Motoren Energietech Device for variably controlling valves in IC engine
DE4244551A1 (en) * 1992-12-30 1994-07-07 Meta Motoren Energietech Variable control system for combustion engine valves
DE4300487A1 (en) * 1993-01-11 1994-07-14 Meta Motoren Energietech Valve play adjustment mechanism for IC engine
DE4300684A1 (en) * 1993-01-13 1994-07-14 Meta Motoren Energietech Valve drive for variable control of IC engine
US5431132A (en) * 1993-01-20 1995-07-11 Meta Motoren-Und Energie-Technik Gmbh Variable valve gear of internal combustion engines
WO1995002116A1 (en) * 1993-07-06 1995-01-19 Meta Motoren- Und Energie-Technik Gmbh Variable control process and device for an internal combustion engine valve
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
WO2003046355A1 (en) * 2001-11-26 2003-06-05 Ina-Schaeffler Kg Method and device for coordinating the filling of a cylinder in a multicylinder internal combustion engine
US7299774B2 (en) 2003-01-30 2007-11-27 Mahle Ventiltrieb Gmbh Valve control
WO2004067922A1 (en) 2003-01-30 2004-08-12 Mahle Ventiltrieb Gmbh Valve control
DE10303601A1 (en) * 2003-01-30 2004-08-12 Mahle Ventiltrieb Gmbh valve control
DE10357083A1 (en) * 2003-12-06 2005-06-30 Ina-Schaeffler Kg Variable valve drive for external ignition combustion engine has lift function adjustment auxiliary cam on secondary camshaft rotating at primary camshaft revolution rate, actuating element pivot point guided on auxiliary cam
WO2006000004A2 (en) * 2004-06-24 2006-01-05 Avl List Gmbh Internal combustion engine
WO2006000004A3 (en) * 2004-06-24 2006-07-13 Avl List Gmbh Internal combustion engine
US7685977B2 (en) 2004-06-24 2010-03-30 Avl List Gmbh Internal combustion engine
DE102007049110A1 (en) * 2007-10-12 2009-04-16 Volkswagen Ag Internal-combustion engine i.e. diesel engine, for motor vehicle, has rocker tiltable around pivot axis and arranged such that shafts acts in corresponding areas, which are arranged at opposite sides of rocker with respect to pivot axis
DE102007049110B4 (en) * 2007-10-12 2017-06-22 Volkswagen Ag Internal combustion engine with two mixed camshafts
US20120055426A1 (en) * 2010-09-08 2012-03-08 Gm Global Technology Operations, Inc. Engine including variable valve lift mechanism
CN102400725A (en) * 2010-09-08 2012-04-04 通用汽车环球科技运作有限责任公司 Engine including variable valve lift mechanism

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