WO2003018966A1 - Ventilmechanismus mit einem variablen ventilöffnungsquerschnitt - Google Patents
Ventilmechanismus mit einem variablen ventilöffnungsquerschnitt Download PDFInfo
- Publication number
- WO2003018966A1 WO2003018966A1 PCT/DE2002/001364 DE0201364W WO03018966A1 WO 2003018966 A1 WO2003018966 A1 WO 2003018966A1 DE 0201364 W DE0201364 W DE 0201364W WO 03018966 A1 WO03018966 A1 WO 03018966A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- valve mechanism
- mechanism according
- gas exchange
- slide
- 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
- 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
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
-
- 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
-
- 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
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
-
- 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
- F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
-
- 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
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
- F01L3/085—Valve cages
-
- 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
- F01L3/10—Connecting springs to valve members
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- Valve mechanism with a variable. Valve opening cross section
- the invention relates to a valve mechanism with a variable valve opening cross section with the features mentioned in the preamble of claim 1.
- electro-hydraulic valve control it is known to use an electro-hydraulic valve control in addition to a camshaft control.
- the electro-hydraulic valve control offers the possibility of a variable or fully variable valve control, so that an optimization of the gas exchange and thus an increase in the engine efficiency of the internal combustion engine is possible.
- the electrohydraulic valve control comprises a hydraulically actuated control valve, the control valve piston of which actuates a valve body of the intake and exhaust valves and leads against a valve seat (valve seat ring) (closing the valve) or moves it away (opening the valve).
- the control valve can be actuated by pressure control of a hydraulic medium. The pressure is controlled via solenoid valves integrated in the hydraulic circuit. In order to achieve the best possible gas exchange, the highest possible switching speeds of the control valve are desirable. Due to these high switching speeds, the valve body of the intake and exhaust valves hits the valve seat ring at high speed. This results in noise on the one hand and the valve partners are subject to relatively high wear.
- EP 0 455 761 B1 relates to a hydraulic valve control device for an internal combustion engine.
- the basic technical principle of this solution is to move an engine valve by means of a controlled pressure of a hydraulic fluid.
- an electronic control device controls a solenoid valve, which in turn controls the movement of a storage piston, via which the stroke of the engine valve is changed.
- EP 0 512 698 AI describes an adjustable valve system for an internal combustion engine. This solution represents an example of a mechanical valve control via cams of a rotating camshaft.
- US 4,777,915 relates to an electromagnetic valve control system for an internal combustion engine.
- a similar solution to an electromagnetic valve control is known from EP 0 471 614 AI.
- the valve is moved back and forth to different positions by electromagnetic force.
- the electromagnets are arranged in two different areas within a housing part of the cylinder head. By alternately activating the electromagnets, the valve is alternatively moved to two end positions, each of which corresponds to the opening and closing position of the valve. In these end positions of the valve, the passage opening to the combustion chamber of the air-fuel mixture is then the most open or completely closed.
- a disadvantage of these known solutions for valve control is, in particular, the high outlay in the manufacture and assembly of the valve mechanism due to its complicated structure. This has a negative impact on the costs of production and assembly. Furthermore, extremely high speeds and large forces are required for valve control in these solutions, so that an increased susceptibility to failure of the valve control due to heavy wear of the parts of the valve mechanism is the inevitable result.
- valve mechanism with the characterizing features of the main claim, on the other hand, offers the advantage of creating a variable valve opening cross section with simple means.
- a Diclt slide is arranged coaxially to the gas exchange valve, which is acted upon by the force of a coupling spring and can be moved back and forth by the valve control in the axial direction, the position of the seal slide relative to the gas exchange valve being changeable in the axial direction by an adjusting unit , which essentially consists of a control slide adjustable in the axial direction of the gas exchange valve, each of which is coaxial with the gas exchange valve and the sealing slide is arranged, a valve mechanism is created which has a simple structure and functions safely and permanently.
- valve mechanism according to the invention consists in particular in that a variable valve opening cross-section can be produced, wherein each individual valve can be regulated separately.
- the variable valve opening cross section can advantageously be produced with the valve mechanism according to the invention without high speeds and without great forces, so that the susceptibility to failure of this valve mechanism is very low.
- the valve mechanism according to the invention can be manufactured and assembled inexpensively due to its simple structure.
- the invention advantageously creates a variable valve control, by means of which an optimization of the gas exchange and thus an increase in the motor efficiency of the internal combustion engine is possible. '
- valve control unit is a camshaft.
- the gas exchange valve has a rotationally symmetrical basic structure and consists of a valve stem, at the lower end of which a valve disk is arranged.
- valve disk has a conical shape Has circumferential surface that forms the sealing seat of the gas exchange valve.
- the sealing seat of the gas exchange valve in each case in direct contact with a sealing seat of the sealing slide and with a valve seat ring of the cylinder head.
- the sealing slide consists of a bush-shaped bearing body, which is arranged so as to be axially displaceable back and forth within a guide of the cylinder head.
- the supply of air to the 0 'internal combustion engine are achieved or the air-fuel mixture controlled with a high accuracy and thus a high efficiency.
- control slide is connected via an external thread to a corresponding internal thread of a gear wheel surrounding it, which is connected to a toothed rack by means of which a longitudinal movement can be carried out.
- control slide is assigned a locking disk via which the control slide can be set in the axial direction.
- FIG. 1 is a side view of the valve mechanism according to the invention with a camshaft
- FIG. 2 shows a plan view of the valve mechanism according to the invention and the camshaft according to FIG. 1;
- Figure 3 shows a section A-A of Figure 2 through a cylinder head with the valve mechanism according to the invention and with a camshaft, which is a first embodiment of the invention
- Figure 4 shows a detail X of Figure 3
- Cylinder head with the valve mechanism according to the invention and without the camshaft which is a first exemplary embodiment of the invention
- Figure 6 shows a section C-C of Figure 5
- Figure 7 shows a section D-D of Figure 5
- FIG 8 a detail Y according to Figure 5;
- FIG. 9 shows a perspective view of a control slide of the valve mechanism according to the invention according to a first exemplary embodiment of the invention.
- FIG. 10 shows a section AA according to FIG. 2 through a cylinder head with the valve mechanism according to the invention and with a camshaft, which is a second embodiment of the invention
- FIG. 11 shows a detail X according to FIG. 10
- FIG. 12 shows a section B-B according to FIG. 1 through a cylinder head with the valve mechanism according to the invention and without the camshaft, which is a second exemplary embodiment of the invention
- Figure 13 shows a section C-C of Figure 12
- Figure 14 is a perspective view of a control slide 5 of the valve mechanism according to the invention according to a second embodiment of the invention.
- Figure 15 is a perspective view of a sealing slide! 0 of the valve mechanism according to the invention.
- FIGS. 1 and 2 show the valve mechanism according to the invention with a camshaft 44 as a valve control unit in its arrangement on the cylinder head 18 of an internal combustion engine, each in a side view and a top view. According to FIG. 2, two cams are arranged on the camshaft 44, each of which controls the axial displacement movement of a gas exchange valve 12.
- FIG. 3 shows the valve mechanism according to the invention with its essential components in a sectional view, which is a first embodiment of the invention.
- the valve mechanism includes a cylinder valve 12 which acted upon by the force of a valve spring 16 is.
- the gas exchange valve 12 can be displaced axially back and forth within a guide, the displacement movement being generated by a valve control unit.
- a camshaft 44 is provided as the valve control unit.
- the gas exchange valve 12 has a rotationally symmetrical basic structure and consists of a valve stem 14, at the lower end of which a valve disk 20 is arranged.
- FIG. 3 shows the valve mechanism in the closed position of the gas exchange valve 12.
- the sealing seat 28 of the gas exchange valve 12 is in each case in direct contact with a sealing seat 30 of the sealing slide 10 and with a valve seat ring 22 of the cylinder head 18.
- the structure and mode of operation of gas exchange valves 12 per se are generally known, so that this will not be discussed in more detail in the context of the present description.
- the invention provides that a sealing slide 10 is arranged coaxially with the gas exchange valve 12.
- the sealing slide 10 is acted upon by the force of a coupling spring 24 and can be displaced axially back and forth.
- the displacement movement of the sealing slide 10 is also generated by the camshaft 40, by which the displacement movement of the gas exchange valve 12 is controlled.
- the sealing slide 10 is shown schematically in a perspective view.
- the sealing slide 10 essentially consists of a bearing body 40 and a sealing body 38.
- the bearing body 40 of the sealing slide 10 is designed in a socket-like manner and is arranged such that it can be moved axially back and forth within a guide of the cylinder head 18.
- the sealing slide 10 has a cylindrical sealing body 38, the outer surface of which forms the sealing seat 30 and the outer wall of which forms an annular gap seal with the valve seat ring 22.
- the sealing body 38 is connected to the bearing body 40 via connecting rods 42.
- a stop disk 26 is fastened to the bearing body 40 near its upper end. To facilitate the rotation
- this stop disc 26 consists of two
- the two parts of the stop disk 26 are surrounded by a clamping ring 36, by which they are held together.
- connection between the sealing body 38 and the bearing body 40 is designed such that sufficient space remains for the air flowing through or for the air-fuel mixture. Both for the inlet and for the outlet of air or the air-fuel mixture is therefore advantageously within the sealing slide 10, a sufficiently large passage opening for ungehin- ⁇ derten flowing through said medium exists ..
- FIG. 8 shows a detail Y according to FIG. 5. It can be clearly seen in this illustration that a control slide 34 is arranged coaxially with the gas exchange valve 12 and with the sealing slide 10.
- the control slide valve 34 (FIG. 9) is provided with an external thread 46, by means of which it is connected to a corresponding internal thread 48 of a toothed wheel 50 surrounding it.
- a locking washer 58 is arranged above the gearwheel 50, by means of which the position of the control slide 34 can be adjusted.
- FIG. 5 shows the arrangement of a toothed rack 58 on the valve mechanism, which is connected to the toothed wheel 50.
- the rack 58 is displaceable in its longitudinal direction and engages with the toothing 54 of the toothed wheel 50 via its toothing 56.
- FIG. 6 shows in a sectional illustration CC according to FIG. 5 the engagement of the locking washer 58 via two webs 60 in the corresponding grooves 62 of the control slide 3. 5
- FIG. 7 shows in a sectional representation D-D according to FIG. 5 the engagement of the toothing 56 of the toothed rack 52 in the toothing 54 of the toothed wheel 50.
- FIG.0 shows a detail X of Figure 3 shows a preferred embodiment of the invention, with which a rotationally fixed connection of the locking washer 58 can be made with the housing of the cylinder head 18.
- FIG. 9 shows the control slide valve 34 according to the first exemplary embodiment of the invention in detail.
- the regulating slide 34 is cylindrical 5, a thread 46 having a relatively large pitch being machined into the outer surface of its wall. Furthermore, there are two continuous grooves 0 62 parallel to its central axis in the outer surface of its wall, each offset by 180 degrees.
- Figure 10 shows the valve mechanism according to the invention with its essential components in a sectional view, which is a second embodiment of the invention.
- the basic structure of the valve mechanism is analogous to the structure of the valve mechanism described in the first exemplary embodiment. There are differences in certain details, which are described in the further explanations.
- FIG. 11 shows a detail X of Figure 10.
- the control slide valve 34 (FIG. 14) is provided with an external thread 46, by means of which it is connected to a corresponding internal thread 48 of a toothed wheel 50 surrounding it.
- a bore 56 is made in the control slide 34, which receives a pin 52.
- the pin 52 protrudes into a housing bore 54 of the cylinder head 18.
- the control slide 34 is connected to the housing of the cylinder head 18 in a rotationally fixed and secure manner.
- FIG. 12 shows the arrangement of a toothed rack 58 on the valve mechanism, which is connected to the toothed wheel 50.
- the rack 58 is displaceable in its longitudinal direction and is in engagement with the toothing 54 of the toothed wheel 50 via its toothing 56.
- FIG. 13 shows, in a sectional illustration according to FIG. 5, the engagement of the toothing 60 of the gearwheel 50 in the toothing 62 of the rack 58.
- the control slide valve 34 according to the second exemplary embodiment of the invention is shown in detail in FIG.
- the regulating slide 34 is cylindrical, with a thread 46 machined on its outer surface with a relatively large pitch. Furthermore, a through bore 56 is present in its wall parallel to its central axis.
- valve control unit which in a preferred embodiment of the invention is a camshaft 44, the gas exchange valve 12 can either be opened or
- the camshaft 4 " 4 works against the restoring force
- valve spring 16 which is on the cylinder head 18 and on the valve plate 20, which is with the gas exchange valve
- the sealing slide 10 is moved along via the coupling spring 24, which is under a certain pretension.
- the coupling spring 24 is supported on the valve plate 20 and on the stop disk 26, which is connected to the sealing slide 10.
- the sealing seat 30 of the sealing slide 10 is pressed onto the sealing seat 28 of the gas exchange valve 12. Since there is an annular gap seal between the sealing body 38 and the valve seat ring 22, only a very small amount of air (leakage) can get into the combustion chamber 32.
- the regulating slide 34 is adjustable in the axial direction of the valve stem 14 in its starting position relative to the gas exchange valve 12.
- the control slide 34 can only be adjusted via a corresponding adjustment unit, two preferred embodiments of which are shown in detail in FIGS. 4 to 9 and 11 to 14. Otherwise, the position of the control slide 34 remains fixed within the valve mechanism, even if external forces act on it.
- the adjusting units can each be actuated electrically, hydraulically or pneumatically.
- the sealing slide 10 can no longer move in the opening direction 'of the gas exchange valve 12. Since the gas exchange valve 12 is moved further by the camshaft, the sealing seat 28 of the gas exchange valve 12 lifts off from the sealing seat 30 of the sealing slide 10, air being able to penetrate into the combustion chamber 32.
- the coupling spring 24 is compressed.
- the gas exchange valve 12 follows the closing flank of the camshaft 40, it is pressed in the closing direction by the valve spring 16. , '' The 'sealing seat 28 of the gas exchange valve 12 lies against the sealing seat 30 of the sealing slide 10. The sealing slide 10 is carried along until the sealing seat 28 of the gas exchange valve 12 bears against the valve seat ring 22 and the gas exchange valve 12 is closed.
- control slide 34 By axially shifting the position of the control slide 34 via an adjusting unit, it can be set when the sealing seat 28 of the gas exchange valve 12 lifts off from the sealing seat 30 of the sealing slide 10. In this advantageous manner, the opening cross section of the gas exchange valve 12 and thus also the amount of air entering the combustion chamber 32 can be regulated.
- the control slide valve 34 shown in FIG. 9 has an external thread 46 with a certain pitch.
- the internal thread 48 of the gearwheel 50 engages in the external thread 46 of the regulating slide 34.
- a groove 62 is incorporated into the control slide 34, into which the web 60 of the locking washer 58 engages. If the locking washer 58 is connected to the housing of the cylinder head 18 in a rotationally fixed manner, a rotary movement of the gearwheel 50 is converted via the thread 48 into a displacement movement of the control slide 34 in the axial direction.
- the rotational movement of the gear 48 is generated with the aid of a longitudinal movement of the rack 52.
- the longitudinal movement of the toothed rack 52 can take place, for example, via a hydraulic or pneumatic cylinder, or via an electric motor which drives a toothed wheel 50 which engages in the toothing 56 of the toothed rack 52.
- the invention advantageously makes it possible to regulate the opening cross section of a plurality of gas exchange valves 12 with a rack 58.
- the locking disk 58 can be rotated, the rack 52 being prevented from moving at the same time.
- the gearwheel 50 will also perform a rotational movement due to the friction of the internal thread 48, namely until the toothing 54 of the gearwheel 50 bears against the toothing 56 of the rack 52.
- the lock washer 58 continues to rotate, the control slide 34 performs a stroke movement tion in the axial direction, since the rack 52 is prevented from longitudinal movement and thus the gear 50 is prevented from rotating. The rotary movement of the locking washer 58 continues until the control slide 34 has assumed the position to be set.
- a rotationally fixed connection between the locking washer and the housing 58 of the cylinder head '18 is prepared.
- the rotationally fixed connection is achieved by means of the embossing of knobs 64 on the locking washer 58, which protrude into bores 66 made in the housing of the cylinder head 18.
- valve mechanism! 0 The basic operation of the valve mechanism! 0 is analogous to the operation of the valve mechanism described in the first embodiment. There are differences in certain details, which are described in the further explanations.
- the control slide 34 of the adjustment unit shown in FIG. 14 has an external thread 46 with a certain pitch.
- the internal thread 48 of the gear wheel 50 engages in the external thread 46 of the regulating slide 34.
- the opening cross section of the gas exchange valve 12 can be regulated in an advantageous manner by the longitudinal movement of the rack 58.
- the longitudinal movement of the rack 58 can preferably take place via a hydraulic or pneumatic cylinder, or via an electric motor that drives a gear wheel 50 which engages in the toothing 62 of the rack 58.
- the invention advantageously makes it possible to regulate the opening cross section of a plurality of gas exchange valves 12 with only one rack 58. This makes the solution according to the invention particularly cost-effective. 0
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003523801A JP2005500461A (ja) | 2001-08-21 | 2002-04-12 | 可変の弁開放横断面を有する弁機構 |
EP02732390A EP1421261A1 (de) | 2001-08-21 | 2002-04-12 | Ventilmechanismus mit einem variablen ventilöffnungsquerschnitt |
KR1020047002507A KR100826465B1 (ko) | 2001-08-21 | 2002-04-12 | 가변 밸브 개방 횡단면을 갖는 밸브 장치 |
US10/399,662 US6766778B2 (en) | 2001-08-21 | 2002-04-12 | Valve mechanism with a variable valve opening cross-section |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10140952.4 | 2001-08-21 | ||
DE10140952A DE10140952A1 (de) | 2001-08-21 | 2001-08-21 | Ventilmechanismus mit einem variablen Ventilöffnungsquerschnitt |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003018966A1 true WO2003018966A1 (de) | 2003-03-06 |
Family
ID=7696129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/001364 WO2003018966A1 (de) | 2001-08-21 | 2002-04-12 | Ventilmechanismus mit einem variablen ventilöffnungsquerschnitt |
Country Status (6)
Country | Link |
---|---|
US (1) | US6766778B2 (de) |
EP (1) | EP1421261A1 (de) |
JP (1) | JP2005500461A (de) |
KR (1) | KR100826465B1 (de) |
DE (1) | DE10140952A1 (de) |
WO (1) | WO2003018966A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10140919A1 (de) * | 2001-08-21 | 2003-03-20 | Bosch Gmbh Robert | Ventilmechanismus mit einem variablen Ventilöffnungsquerschnitt |
FR2853011B1 (fr) * | 2003-03-26 | 2006-08-04 | Melchior Jean F | Moteur alternatif a recirculation de gaz brules destine a la propulsion des vehicules automobiles et procede de turbocompression de ce moteur |
DE102005050777A1 (de) * | 2005-10-24 | 2007-04-26 | Robert Bosch Gmbh | Zylinderkopf für einen Verbrennungsmotor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US477915A (en) | 1892-06-28 | Island | ||
DE2612430A1 (de) * | 1976-03-24 | 1977-10-06 | Daimler Benz Ag | Brennkraftmaschine mit einer zusaetzlichen ventilsteuerung im einlasskanal |
EP0455761A1 (de) | 1989-11-25 | 1991-11-13 | Bosch Gmbh Robert | Hydraulische ventilsteuervorrichtung für brennkraftmaschinen. |
GB2248471A (en) * | 1990-10-04 | 1992-04-08 | Ford Motor Co | I.c.engine poppet valve guide and variable throttle |
EP0512698A1 (de) | 1991-05-03 | 1992-11-11 | Ford Motor Company Limited | Verstellbare Ventilvorrichtung für eine Brennkraftmaschine |
JPH08189319A (ja) * | 1994-12-28 | 1996-07-23 | Aisin Seiki Co Ltd | エンジンの動弁装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2636519A1 (de) * | 1976-08-13 | 1978-02-16 | Daimler Benz Ag | Brennkraftmaschine mit einem durch ein einlass- und zusatzventil steuernden einlassquerschnitt |
US5253621A (en) * | 1992-08-14 | 1993-10-19 | Group Lotus Plc | Valve control means |
DE19712668C1 (de) * | 1997-03-26 | 1998-05-07 | Daimler Benz Ag | Ventilantrieb für Gaswechselventile von Brennkraftmaschinen |
-
2001
- 2001-08-21 DE DE10140952A patent/DE10140952A1/de not_active Ceased
-
2002
- 2002-04-12 KR KR1020047002507A patent/KR100826465B1/ko not_active IP Right Cessation
- 2002-04-12 JP JP2003523801A patent/JP2005500461A/ja active Pending
- 2002-04-12 EP EP02732390A patent/EP1421261A1/de not_active Withdrawn
- 2002-04-12 WO PCT/DE2002/001364 patent/WO2003018966A1/de active Application Filing
- 2002-04-12 US US10/399,662 patent/US6766778B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US477915A (en) | 1892-06-28 | Island | ||
DE2612430A1 (de) * | 1976-03-24 | 1977-10-06 | Daimler Benz Ag | Brennkraftmaschine mit einer zusaetzlichen ventilsteuerung im einlasskanal |
EP0455761A1 (de) | 1989-11-25 | 1991-11-13 | Bosch Gmbh Robert | Hydraulische ventilsteuervorrichtung für brennkraftmaschinen. |
GB2248471A (en) * | 1990-10-04 | 1992-04-08 | Ford Motor Co | I.c.engine poppet valve guide and variable throttle |
EP0551271B1 (de) | 1990-10-04 | 1995-06-28 | Ford-Werke Aktiengesellschaft | Ventilmechanismus |
EP0512698A1 (de) | 1991-05-03 | 1992-11-11 | Ford Motor Company Limited | Verstellbare Ventilvorrichtung für eine Brennkraftmaschine |
JPH08189319A (ja) * | 1994-12-28 | 1996-07-23 | Aisin Seiki Co Ltd | エンジンの動弁装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11 29 November 1996 (1996-11-29) * |
Also Published As
Publication number | Publication date |
---|---|
JP2005500461A (ja) | 2005-01-06 |
US20040025820A1 (en) | 2004-02-12 |
KR20040030158A (ko) | 2004-04-08 |
US6766778B2 (en) | 2004-07-27 |
EP1421261A1 (de) | 2004-05-26 |
DE10140952A1 (de) | 2003-03-20 |
KR100826465B1 (ko) | 2008-05-02 |
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