EP0564610A1 - Hydraulische steuereinrichtung. - Google Patents
Hydraulische steuereinrichtung.Info
- Publication number
- EP0564610A1 EP0564610A1 EP92918896A EP92918896A EP0564610A1 EP 0564610 A1 EP0564610 A1 EP 0564610A1 EP 92918896 A EP92918896 A EP 92918896A EP 92918896 A EP92918896 A EP 92918896A EP 0564610 A1 EP0564610 A1 EP 0564610A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- camshaft
- pressure
- toothing
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F01L1/34—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
- F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34403—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
-
- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/031—Electromagnets
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2101—Cams
- Y10T74/2102—Adjustable
Definitions
- the invention relates to a hydraulic control device for rotating the camshaft of an internal combustion engine according to the preamble of the main claim.
- a hydraulic control device for rotating the camshaft of an internal combustion engine according to the preamble of the main claim.
- the pump and the solenoid valve are arranged externally, which is relatively cumbersome, in particular with regard to the necessary pressure medium connections, but also requires considerable construction effort (DE-OS 32 47 916).
- the hydraulic control device according to the invention with the characterizing features of the main claim has the advantage that it is very compact and is very easy to install in an internal combustion engine or in its engine compartment. Further advantages of the invention emerge from the subordinate claims.
- FIG. 1 a longitudinal section of a hydraulic control device for rotating the camshaft of an internal combustion engine
- FIG. 2 a section along II-II according to FIG. 1 and in FIG. 3 a schematic diagram.
- 10A denotes the one end of a camshaft 10, which is mounted in a camshaft bearing 11.
- the camshaft is driven by a drive gear 12, to which a hydraulic housing 13 connects.
- This as well as the gear 12 and the camshaft 10 are connected in an angularly movable manner with screws 14 and sleeves 15, namely in that the sleeves 14 are arranged with play in the longitudinal slots 12A of the drive gear 12. Only one screw and only one sleeve is shown in FIG. 1. The screws are discussed in more detail below.
- the drive gear 12 has a hub 17, on the bore of which a helical toothing 18 is formed. With this meshes a similar toothing of a coupling member 19, which has a reduced diameter extension 20, which has a straight toothing 21 on the outer circumference, which engages with such a toothing on a sleeve 22 which is fixed in a central and continuous longitudinal bore 23 of the Camshaft 10 is arranged. In this way, when the coupling member 19 is displaced, the camshaft 10 is rotated relative to the gear 12. Compared to the extension 20, a short extension 24 is formed concentrically on the coupling member 19. A double-acting piston 25 is screwed onto this with its piston rod 26, which plunges into a central stepped bore 27 of the hydraulic body 13.
- the piston 25 slides in the enlarged part 27A of the stepped bore 27. It divides the bore step 27A into two pressure chambers 29 and 30.
- An insert 31 is screwed into the piston rod 26, between which and the base of the piston 25 a pressure relief valve 33 is arranged.
- This has a membrane-shaped valve body 34, which cooperates with a central bore 35 formed in the piston, which is connected to a transverse bore 36 which opens into the pressure chamber 30.
- the piston 25 penetrates a longitudinal bore 37, which also extends from the pressure chamber 29 to the pressure relief valve 33.
- the membrane 34 abuts its seat, it separates the two bores 35 and 37 from one another.
- a radial piston pump 38 is arranged with a plurality of radially running blind bores 39, in which pistons 40 slide, which with their outer tips lie on the inner ring 41A of a ball bearing 41.
- the ball bearing 41 is mounted with its outer ring 41B in the cylinder head cover 42 of the internal combustion engine.
- the ball bearing 41 is arranged eccentrically to the longitudinal axis of the pistons 25, so that they perform a lifting movement when the hydraulic body 13 rotates.
- the number of blind bores 39 corresponds to the number of screws 14 and they are in the same plane.
- a short, transverse bore 44 leads from the bottom of each blind bore 39 to a bore 45 which is much larger in diameter and in which an insert 46 is arranged which receives an outlet valve 47.
- This has a spherical valve body 48, which lies on a conical valve seat 49 under the force of a compression spring 50, at which the bore 44 opens.
- One goes from a location next to the bore 44 parallel bore 51, into which a bore 52 opens, which leads to an annular gap 53 which is in communication with the pressure chamber 30. It can be seen from this that when the valve body 48 has lifted off its seat, there is a connection from the piston bore 39 or its displacement space to the pressure space 30.
- an oblique bore 55 which accommodates a throttle 56, leads to the screw 14.
- the screw 14 has a continuous transverse bore 56, which is however closed.
- a longitudinal bore 57 which largely penetrates the screw, extends from the transverse bore 56A and opens into the bottom of the bore 58 receiving the screw. From there, an oblique bore 59 runs to an annular groove 60 on the outer circumference of the sleeve 22.
- a longitudinal groove 61 running on the outer circumference of the sleeve opens into the annular groove, and the connection to an oblique bore 62 running in the camshaft again forms a transverse bore 63 in the bearing 11
- the bore 63 is connected via a line to a pre-feed pump 64 which draws in from a pressure medium reservoir - see also FIG. 3. From this it can be seen that the blind bore 39 receiving the pistons 40 is via the last-described one
- connections to the reservoir is connected, that is, the oblique bore 55 forms the suction hole for the radial piston pump, while the throttle 56 forms a suction throttle for a pressure medium restriction at high speeds.
- the hydraulic body 13 is closed by a two-part valve housing 66 of an electromagnetic valve 70, which has a transverse bore 67 which starts from the outside and opens at a valve seat 68 for a spherical valve body 61.
- the valve body 69 controls a central bore 71, from which there is a connection from the pressure chamber 29 to the bore 67 when the valve body is lifted off.
- a pin 73 which is fixedly arranged in the armature 74 of an electromagnet 75, can act on the valve body 69.
- the pin 73 slidably penetrates a longitudinal bore 76 in the valve plate 66.
- the construction of the electromagnet was only briefly discussed.
- the pin 73 consists of non-magnetic material, the magnetic core 80 of soft magnetic material.
- the magnetic core 80 is made by its special design so that you get a proportional pressure relief valve.
- a sensor ring 81 is also arranged on the outer circumference of the valve body 13 and simultaneously secures the ball bearing 41 against displacement.
- the sensor ring 81 determines the speed of the camshaft and signals it to an electronic control unit which controls the solenoid valve 75 according to certain criteria.
- FIG. 3 shows the device described above in a schematic representation.
- the pump 38, the actuating cylinder 25, 27, the piston rod 26, the pressure relief valve 33 and the proportional pressure relief valve 75 can be seen.
- the pistons 40 When the drive gear 12 together with the camshaft 10 and the cylinder body 13 rotates, the pistons 40 perform a lifting movement and suck in pressure medium from the pressure medium reservoir via the oblique bores 55 and the connection described above. During the inward stroke, the pressure medium is displaced via the outlet valves 47 into the annular gap 53 and into the pressure chamber 30. The piston 25 is now displaced to the left by the pressure prevailing in this pressure chamber, whereupon the coupling member 19 with its toothings of the camshaft 10 issued a relative rotation with respect to the drive gear 12. It now occupies a first position. The pressure medium required for the suction by the pistons 40 is supplied via the prefeed pump 64.
- valve body 69 When the electromagnet 75 is excited, the valve body 69 is pressed onto its valve seat 68 by armature 74 and plunger 73. This prevents the pressure medium from flowing out of the pressure chamber 29. Now a certain pressure builds up in the pressure chamber 30 due to the continued delivery of the pressure medium - for example 30 bar - whereupon the pressure limiting valve 33 opens by lifting the membrane 34 from its valve seat. Now pressure medium can penetrate through the bore 35 and the longitudinal bore 37 into the pressure chamber 29, where the pressure now also increases until it has reached the same value as in the pressure chamber 30. However, since the free piston area is significantly larger than the annular piston area, it moves the piston 25 to the right.
- the coupling member 19 or its toothing now gives the camshaft 10 a new relative angular position with respect to the drive gear 12. This is possible because the sleeves 15 are movable in both directions in their longitudinal slots of the drive gear, relative to the circumference of the drive gear.
- the suction plug 56 limits the inflow to the piston bores 39.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4135380A DE4135380A1 (de) | 1991-10-26 | 1991-10-26 | Hydraulische steuereinrichtung |
DE4135380 | 1991-10-26 | ||
PCT/DE1992/000748 WO1993008379A1 (de) | 1991-10-26 | 1992-09-04 | Hydraulische steuereinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0564610A1 true EP0564610A1 (de) | 1993-10-13 |
EP0564610B1 EP0564610B1 (de) | 1995-12-13 |
Family
ID=6443496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92918896A Expired - Lifetime EP0564610B1 (de) | 1991-10-26 | 1992-09-04 | Hydraulische steuereinrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5329890A (de) |
EP (1) | EP0564610B1 (de) |
JP (1) | JP3450004B2 (de) |
DE (2) | DE4135380A1 (de) |
WO (1) | WO1993008379A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4139611A1 (de) * | 1991-11-30 | 1993-06-03 | Zahnradfabrik Friedrichshafen | Getriebe mit einer verdraengerpumpe |
DE4218078C5 (de) * | 1992-06-01 | 2006-07-13 | Schaeffler Kg | Vorrichtung zur selbsttätigen, kontinuierlichen Winkelverstellung zwischen zwei in Antriebsverbindung stehenden Wellen |
GB2268245A (en) * | 1992-06-20 | 1994-01-05 | Ford Motor Co | Phase change mechanism having latching means for arresting an inertial member |
DE4237193A1 (de) * | 1992-11-04 | 1994-05-05 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Einrichtung zum relativen Verdrehen einer Welle und Einrichtung zum relativen Verdrehen der Welle einer Brennkraftmaschine |
DE4406968A1 (de) * | 1993-03-15 | 1994-09-22 | Volkswagen Ag | Nockenwellenanordnung mit einem auf einer Nockenwelle begrenzt schwenkbar gelagerten Schwenknocken |
DE4401073A1 (de) * | 1994-01-15 | 1995-07-20 | Rexroth Mannesmann Gmbh | Radialkolbenpumpe, insbesondere Kraftstoffpumpe für Verbrennungsmotoren |
IT1281881B1 (it) * | 1995-05-11 | 1998-03-03 | Carraro Spa | Dispositivo meccanico per variare la fase fra albero motore ed un albero a camme di un motore a combustione interna. |
DE19604865B4 (de) * | 1996-02-10 | 2009-05-07 | Schaeffler Kg | Mittels separater Ölfördereinrichtung beaufschlagbarer Stellzylinder eines Nockenwellenverstellers |
US5915348A (en) * | 1996-11-07 | 1999-06-29 | Ina Walzlager Schaeffler Ohg | Adjusting cylinder of a camshaft adjusting device acted upon by a separate oil supply unit |
ATE214125T1 (de) * | 1997-10-21 | 2002-03-15 | Tcg Unitech Ag | Vorrichtung zur verstellung einer nockenwelle einer brennkraftmaschine mit innerer verbrennung |
US6328006B1 (en) * | 1999-03-23 | 2001-12-11 | Tcg Unitech Aktiengesellschaft | Device for adjusting the phase angle of a camshaft of an internal combustion engine |
US6814409B2 (en) | 2001-04-12 | 2004-11-09 | A-Dec, Inc. | Hydraulic drive system |
US6883479B2 (en) * | 2002-11-04 | 2005-04-26 | Borgwarner Inc. | VCT phaser having an electromagnetic lock system for shift and lock operation |
US8196720B2 (en) * | 2006-01-10 | 2012-06-12 | D-Brake Llc | Brake apparatus and method |
JP5758603B2 (ja) * | 2010-09-24 | 2015-08-05 | トヨタ自動車株式会社 | 内燃機関のオイル供給装置 |
DE102014017035A1 (de) * | 2014-11-18 | 2016-05-19 | Audi Ag | Brennkraftmaschine |
CN108331859B (zh) * | 2018-01-29 | 2019-11-15 | 安徽展鹏液压机械有限公司 | 一种用于车辆缓速制动系统的液力缓速器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3247916A1 (de) * | 1982-12-24 | 1984-06-28 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zur steuerung der ventile einer brennkraftmaschine ueber eine nockenwelle |
DE3929621A1 (de) * | 1989-09-06 | 1991-03-07 | Bayerische Motoren Werke Ag | Vorrichtung zur relativen drehwinkelverstellung einer welle zu einem antriebsrad, insbesondere nockenwelle einer brennkraftmaschine |
JP2760619B2 (ja) * | 1990-01-30 | 1998-06-04 | 株式会社ユニシアジェックス | 内燃機関のバルブタイミング制御装置 |
JPH0436004A (ja) * | 1990-05-31 | 1992-02-06 | Atsugi Unisia Corp | 内燃機関のバルブタイミング制御装置 |
JPH04132414U (ja) * | 1991-05-29 | 1992-12-08 | 株式会社アツギユニシア | 内燃機関のバルブタイミング制御装置 |
-
1991
- 1991-10-26 DE DE4135380A patent/DE4135380A1/de not_active Withdrawn
-
1992
- 1992-09-04 JP JP50733193A patent/JP3450004B2/ja not_active Expired - Fee Related
- 1992-09-04 EP EP92918896A patent/EP0564610B1/de not_active Expired - Lifetime
- 1992-09-04 US US08/074,822 patent/US5329890A/en not_active Expired - Fee Related
- 1992-09-04 DE DE59204690T patent/DE59204690D1/de not_active Expired - Fee Related
- 1992-09-04 WO PCT/DE1992/000748 patent/WO1993008379A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9308379A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP3450004B2 (ja) | 2003-09-22 |
EP0564610B1 (de) | 1995-12-13 |
WO1993008379A1 (de) | 1993-04-29 |
DE59204690D1 (de) | 1996-01-25 |
DE4135380A1 (de) | 1993-04-29 |
JPH06503630A (ja) | 1994-04-21 |
US5329890A (en) | 1994-07-19 |
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