WO2006080865A2 - Mécanisme de distribution de gaz à soupape - Google Patents

Mécanisme de distribution de gaz à soupape Download PDF

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Publication number
WO2006080865A2
WO2006080865A2 PCT/RU2005/000591 RU2005000591W WO2006080865A2 WO 2006080865 A2 WO2006080865 A2 WO 2006080865A2 RU 2005000591 W RU2005000591 W RU 2005000591W WO 2006080865 A2 WO2006080865 A2 WO 2006080865A2
Authority
WO
WIPO (PCT)
Prior art keywords
valve
shutter
exhaust
intake
channel
Prior art date
Application number
PCT/RU2005/000591
Other languages
English (en)
Russian (ru)
Other versions
WO2006080865A3 (fr
Inventor
Anatoliy Viktorovich Pozdeev
Original Assignee
Anatoliy Viktorovich Pozdeev
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 Anatoliy Viktorovich Pozdeev filed Critical Anatoliy Viktorovich Pozdeev
Publication of WO2006080865A2 publication Critical patent/WO2006080865A2/fr
Publication of WO2006080865A3 publication Critical patent/WO2006080865A3/fr

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
    • F01L1/28—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of coaxial valves; characterised by the provision of valves co-operating with both intake and exhaust ports
    • 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
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
    • F01L3/205—Reed valves

Definitions

  • the alleged invention relates to the field of engine manufacturing.
  • Known valve timing mechanisms for internal combustion engines containing a common valve for intake and exhaust with inlet channels, inside of which are installed shutters with an actuator (for example, according to the application of Germany> fe 3812988, class FOlL 1/28). Its disadvantage is that a complex mechanical drive causes additional inertial loads and associated vibrations and reduces the reliability of the mechanism.
  • a disadvantage of the known valve timing mechanism is that, as in the aforementioned, although to a lesser extent, when opening and closing the dampers, unbalanced inertial loads occur - moments of inertia, since the axis of rotation are made on one of their extreme sides, the moment of inertia with respect to which the greatest and overcoming of these moments of inertia forces may be on the verge of operability of the mechanism.
  • the purpose of the invention is the reduction of unbalanced inertial loads, vibrations and energy consumption of the damper actuator.
  • This goal is achieved by placing the axis of rotation of the shutter closer to the axis of symmetry, but with some ⁇ m offset relative to it to maintain the possibility of automatic opening under the influence of the difference pressure.
  • a counterweight is made. It is necessary due to the fact that the shutters must rotate from closed to open and back at high angular speeds (up to 3000 times or more per minute), therefore they must be carefully balanced relative to the axis of rotation to reduce the inertial loads associated with this vibration and reduce the energy intensity of their drive.
  • FIG. 1 shows a diagram of a valve timing for one engine cylinder.
  • the valve mechanism contains a common valve with a plate 1, when opened, the engine cylinder (nadporshnevny space) 2 is connected to nadklapannym cavity 3, and through it with the open valve 4 - with the inlet channel 5 at the inlet stroke, or with the open valve 6 - with the exhaust channel 7 at a release stroke.
  • the dampers are installed to separate the intake and exhaust processes. They form three isolated cavities: 1) the inlet channel, 2) the vypisky channel, and 3) the sealing cavity.
  • the common valve opens under the action of two cams - 8 and 9 of the camshaft 10, through the beam 11 acting on the valve stem with plate 1 (the valve actuator can also be hydraulic, electromagnetic, etc.).
  • the valve opens twice during the duty cycle (per revolution of the camshaft).
  • the left (in Fig. 1) cam 8 camshaft serves to open the valve at the intake stroke, right 9 - at the exhaust stroke.
  • the inlet flap 4 and the exhaust flap 6 isolate these channels from the nadklapanny cavity with the corresponding strokes.
  • the rotation axes of the shutters are attached to them with an offset from the axis of symmetry (as in Fig. 1), which ensures the rotation of the shutters under the action of the gas pressure difference.
  • vc- electromagnets 12 and 13 or stepper motors are installed, which guarantee their opening (with insufficient pressure difference) or fix their closed state at the command of the electronic engine control system (ECM - not shown in FIG. 1).
  • balances 14 are made, moreover, they can be formed optionally in an explicit form, as in Fig. 1, and due to the thickening of the corresponding part, which avoids the occurrence of turbulent flows and an increase in resistance to the movement of gases.
  • Other design options and the number of dampers and their actuators are possible.
  • the mechanism works as follows (two versions of its operation), the first option - when working without pressurization of a gasoline or diesel engine, the supravalve cavity 3 is connected to the cylinder of the engine 2 (the over-piston space) when the valve 1 is opened - under the influence of the left cam 8 of the camshaft 10 the rocker 1 1 presses on the valve stem, lowering it with a plate 1 down. Under the influence of the pressure difference, the left shutter 4 opens (during the intake stroke), and the inlet channel 5 is connected to the cylinder of the engine 2 through the supravalve cavity 3. The air (or combustible mixture) is inlet. Subsequently, after completing the intake, compression, and stroke cycles, the exhaust gas exhaust cycle from the engine cylinder begins.
  • the valve 1 opens under the action of the right cam 9 of the camshaft 10 and the rocker 1 i.
  • the shutter 6 of the outlet channel 7 opens and the gases are removed, and the shutter 4 of the inlet channel 5 (in addition to the force of the spring 16) is pressed even more tightly against the sealing ledges 15 and is kept closed. Subsequently, the cycle repeats.
  • the second option during the operation of an injection gasoline or diesel engine with supercharging even low overpressure (0.02 ... 0.03 MPa), the inlet flap 4 can remain open under this pressure constantly. In order to prevent leakage of charge air and maintain the required boost pressure, the inlet flap 4 of the inlet channel 5 must be blocked when the other strokes are closed, for example, by an electromagnet 12.
  • Valve 1 opens and closes in the same manner as in the first embodiment.
  • the exhaust gases from the cylinder 2 of the engine with the valve 1 open pass into the supravalve cavity 3, under their pressure, the valve 6 of the exhaust channel (when unlocked) opens and the gases are directed to the exhaust pipe (not shown in FIG. 1), In the following cycle repeats itself
  • valve timing mechanism In the proposed valve timing mechanism, its operation occurs with less energy. The reduction of energy costs occurs due to the reduction of unbalanced inertia forces (as well as reducing the number of drive links). Vibration and wear of the damper drive parts are reduced. The reliability of the mechanism increases. Due to the indicated advantages (as well as the advantages of the general valve of the mechanism), high economic efficiency will be ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

La présente invention relève de la construction des moteurs, et se rapporte précisément à un mécanisme de distribution de gaz à soupape. Le mécanisme selon l'invention comprend une unique soupape d'admission et d'évacuation, qui est dotée de canaux d'amenée contenant des obturateurs, lesquels s'ouvrent automatiquement sous l'effet d'une différence de pression causée par le déplacement de l'axe de rotation des obturateurs par rapport à leur axe de symétrie. Lesdits obturateurs sont placés de manière à séparer les processus d'admission et d'évacuation, et forment trois cavités séparées, à savoir : (1) un canal d'admission, (2) un canal d'évacuation, et (3) une cavité située au-dessus de la soupape. Lors du cycle d'admission, la soupape et l'obturateur du canal d'admission s'ouvrent (l'obturateur du canal d'évacuation étant fermé), ce qui permet l'admission d'air (ou du mélange combustible). Lors du cycle d'évacuation, ladite soupape et l'obturateur du canal d'évacuation s'ouvrent (l'obturateur du canal d'admission étant fermé), ce qui permet l'évacuation des gaz d'échappement. Les obturateurs se ferment à l'aide de ressorts de rappel, s'ouvrent à l'aide d'une différence de pression (le cas échéant à l'aide d'électroaimants), et se fixent à l'état fermé en fonction des commandes du système électronique de commande de moteur. Afin que soient réduites les forces d'inertie déséquilibrées qui sont générées lors du mouvement des obturateurs par le déplacement de leur axe de rotation, des contrepoids sont disposés sur les obturateurs, du côté vers lequel l'axe de rotation est déplacé par rapport à l'axe de symétrie. Les contrepoids placés sur les obturateurs permettent de réduire les vibrations, l'usure et la consommation d'énergie d'un mécanisme d'entraînement, ce qui permet d'améliorer la rentabilité.
PCT/RU2005/000591 2005-01-24 2005-11-21 Mécanisme de distribution de gaz à soupape WO2006080865A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005101511/06A RU2286466C2 (ru) 2005-01-24 2005-01-24 Клапанный механизм газораспределения
RU2005101511 2005-01-24

Publications (2)

Publication Number Publication Date
WO2006080865A2 true WO2006080865A2 (fr) 2006-08-03
WO2006080865A3 WO2006080865A3 (fr) 2007-01-18

Family

ID=36740912

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2005/000591 WO2006080865A2 (fr) 2005-01-24 2005-11-21 Mécanisme de distribution de gaz à soupape

Country Status (2)

Country Link
RU (1) RU2286466C2 (fr)
WO (1) WO2006080865A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR20080100129A (el) * 2008-02-29 2009-09-25 Κωνσταντινος Δημητριου Θεοχαρης Εκκεντροφορος με εκκεντρα 180 και 90 μοιρων και κυλινδροκεφαλη με ενιαιο αϋλο εισαγωγης-εξαγωγης

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742028A (en) * 1952-11-28 1956-04-17 Jacob G Robinson Valve mechanism
SU985627A1 (ru) * 1981-08-06 1982-12-30 Проектно-Конструкторское Бюро Треста "Сантехдеталь" Главпромвентиляции Минмонтажспецстроя Ссср Воздушный клапан
DE3520872A1 (de) * 1985-06-11 1986-12-11 Wiho 2161 Twielenfleth Stümpel Verfahren zur verschleissminderung der steuereinrichtungen bei brennkraftmaschinen und vorrichtung zur durchfuehrung des verfahrens
SU1314207A1 (ru) * 1985-07-04 1987-05-30 Предприятие П/Я Г-4941 Устройство дл удалени выхлопных газов от двигателей внутреннего сгорани
DE4105848C1 (en) * 1991-02-25 1992-08-06 Franz 7069 Berglen De Rupp Four-stroke IC engine with single cylinder valve - has secondary valves open during piston compression and work strokes
RU2154215C2 (ru) * 1995-04-28 2000-08-10 Моника Пашковска Термодинамический всасывающий клапан

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742028A (en) * 1952-11-28 1956-04-17 Jacob G Robinson Valve mechanism
SU985627A1 (ru) * 1981-08-06 1982-12-30 Проектно-Конструкторское Бюро Треста "Сантехдеталь" Главпромвентиляции Минмонтажспецстроя Ссср Воздушный клапан
DE3520872A1 (de) * 1985-06-11 1986-12-11 Wiho 2161 Twielenfleth Stümpel Verfahren zur verschleissminderung der steuereinrichtungen bei brennkraftmaschinen und vorrichtung zur durchfuehrung des verfahrens
SU1314207A1 (ru) * 1985-07-04 1987-05-30 Предприятие П/Я Г-4941 Устройство дл удалени выхлопных газов от двигателей внутреннего сгорани
DE4105848C1 (en) * 1991-02-25 1992-08-06 Franz 7069 Berglen De Rupp Four-stroke IC engine with single cylinder valve - has secondary valves open during piston compression and work strokes
RU2154215C2 (ru) * 1995-04-28 2000-08-10 Моника Пашковска Термодинамический всасывающий клапан

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR20080100129A (el) * 2008-02-29 2009-09-25 Κωνσταντινος Δημητριου Θεοχαρης Εκκεντροφορος με εκκεντρα 180 και 90 μοιρων και κυλινδροκεφαλη με ενιαιο αϋλο εισαγωγης-εξαγωγης

Also Published As

Publication number Publication date
RU2005101511A (ru) 2006-07-10
WO2006080865A3 (fr) 2007-01-18
RU2286466C2 (ru) 2006-10-27

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