EP3498989A1 - Ventiltrieb für einen verbrennungsmotor - Google Patents

Ventiltrieb für einen verbrennungsmotor Download PDF

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Publication number
EP3498989A1
EP3498989A1 EP17207245.6A EP17207245A EP3498989A1 EP 3498989 A1 EP3498989 A1 EP 3498989A1 EP 17207245 A EP17207245 A EP 17207245A EP 3498989 A1 EP3498989 A1 EP 3498989A1
Authority
EP
European Patent Office
Prior art keywords
valve
fluid
cavity
rocker arm
internal combustion
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Withdrawn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
EP17207245.6A
Other languages
English (en)
French (fr)
Inventor
Sandro Rivellini
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.)
Innio Jenbacher GmbH and Co OG
Original Assignee
Innio Jenbacher GmbH and Co OG
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 Innio Jenbacher GmbH and Co OG filed Critical Innio Jenbacher GmbH and Co OG
Priority to EP17207245.6A priority Critical patent/EP3498989A1/de
Priority to US16/220,015 priority patent/US20190257219A1/en
Publication of EP3498989A1 publication Critical patent/EP3498989A1/de
Withdrawn legal-status Critical Current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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • 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
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2411—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the valve stem and rocker arm
    • 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/107—Lubrication of valve gear or auxiliaries of rocker shaft bearings
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L2001/2444—Details relating to the hydraulic feeding circuit, e.g. lifter oil manifold assembly [LOMA]

Definitions

  • This invention relates to a valve train for an internal combustion engine with the features of the preamble of claim 1, an internal combustion engine comprising such a valve train and a method for operating a valve train.
  • valve elements to control the intake of fuel and gas to the combustion engine. After the combustion process, wherein the fuel air mixture is burned, further valves are used to control the outlet of exhaust gases produced within the combustion.
  • valves have a clearance between valve and valve seat because during engine operation the valves heat up. On account of the thermal expansion the valve stretches and the clearance between valve and valve seat ensures a save function of the valve train.
  • the valve seats are strongly loaded by high temperatures and passing by particles. This passing by particles cause abrasive wear on the one side and do deposits on the other hand.
  • the clearance between valve and valve seat is increased or decreased during engine life time. This clearance is also called valve lash. If the clearance between valve and valve seat is too large or to little the fuel consumption increases, the performance decreases, the emissions increase, the compression decreases and/or the temperature of the valve increases until they damage just to name a few examples.
  • valve lash adjustment requires a great effort in time because each valve has to be adjusted by hand with the help of a feeler gauge.
  • the valve lash adjustment can take several hours.
  • valve train for an internal combustion engine having the features of claim 1, by an internal combustion engine comprising such a valve train according to claim 13 and an method for operating a valve train according to claim 14.
  • Advantageous embodiments of the invention are defined in the dependent claims.
  • the at least one valve actuating element can preferably be a configured to move translationally. Alternatively it can be configured to move in a rotating manner.
  • the at least one cavity is in fluid communication with a fluid supplier through a conduct.
  • the conduct is a bore arranged in the rocker arm. It can also be provided that an orifice and a drain are provided instead of the bore.
  • the fluid is a lubricant, preferably oil.
  • the at least one rocker arm is actuating more than one valve.
  • the at least one cavity is arranged at least partially, preferably fully, in the at least one rocker arm. It can also be provided that the piston is used as the at least one valve actuating element.
  • At least one cam shaft is provided, wherein the cam shaft has at least one cam and is rotatable.
  • at least one cam follower is provided, which cam follower is arranged at the at least one cam, which converts a rotational movement of the cam shaft into a translational movement, which translational movement can be transferred by the cam follower, which works as actuating element or by use of actuating element to transfer, to the rocker arm.
  • a lubrication of the at least one bearing is provided, wherein a fluid for the lubrication of the at least one bearing is provided, which corresponds to the fluid used in the at least one cavity and wherein the lubrication of the bearing serves as the fluid supply.
  • the volume of the fluid in the at least one cavity can be varied in a non-actuated position of the at least one valve.
  • the conduct of the at least one cavity can be closed in such a way, that a volume of the fluid in the at least one cavity can be held essentially constant in an actuated and/or during an actuating movement of the at least one valve.
  • At least one valve bridge is provided for actuating at least two valves, wherein the at least one cavity is preferably arranged between the at least one valve bridge and the at least one valve. It can also be provided that the at least one cavity is arranged at least partially, preferably fully, in the at least one valve bridge.
  • a conduct is arranged in the at least one valve bridge to connect the at least one cavity with the fluid supplier. It can also be provided that the conduct can be closed at least partially according to a position of the at least one valve bridge, preferably can be closed in an actuated position of the valve bridge. In this case the activated position is an open position of the at least one valve and the non-activated position is a closed position of the at least one valve.
  • the at least one bearing has a shaft, wherein the bearing allows a rotational movement of the at least one rocker arm around the shaft. This means that the shaft stays in his position (does not rotate) and the at least one rocker arm (mounted on the shaft) could rotate around the shaft axis.
  • a lubrication is provided between the shaft and the at least one rocker arm, wherein the conduct connects the at least one cavity with the bearing.
  • At the at least one conduct connecting the at least one cavity with a reservoir, has at least one check valve, wherein the check valve only allows a unidirectional fluid motion.
  • the at least one recess is provided on a surface of the shaft, which is configured to
  • first and second position are different positions, which can be done by the rocker arm by a rational movement around the shaft.
  • the at least one shaft recess on a surface of the shaft extends over a radial section.
  • the extending radial section of the shaft recess tapers axially and the shaft is movable axially with respect to the rocker arm.
  • a blocking element is provided centrally in the shaft.
  • the shaft has in this embodiment a bore, connecting the blocking element with the at least one conduct leading to the at least one cavity.
  • the blocking element can be moved from a first position to a second position, wherein the blocking element connects the at least one cavity in a first position with a reservoir/fluid supply and wherein the blocking element blocks (interrupts) the fluid communication between the at least one cavity and the reservoir/fluid supply.
  • the blocking element is a rotationally symmetric element arranged in the shaft, which can be rotated between a first and a second position.
  • At least one supply-pin is provided, supplying the at least one cavity with fluid. It can be provided that there is a supply pipe inside the supply-pin, supplying the at least one cavity with fluid.
  • the at least one rocker arm or the at least one valve bridge has at least one supply-pin plunging recess, in which the at least one supply-pin can plunge at least partially. It can also be provided that that the at least one supply-pin serves as fluid supplier. It can be provided that
  • the supply-pin is a rotationally symmetrical element and comprises a connecting section between the supply-pin and the at least one rocker arm or the at least one valve bridge and an opening thereon extending in a moving direction of the at least one rocker arm or the at least one valve bridge.
  • a duration can be varied, wherein the at least one cavity is connected with the supply/reservoir.
  • the opening tapers in a direction normal to a moving direction of the at least one rocker arm or the at least one valve bridge and the at least one supply pin is movable in the direction normal to the moving direction of the at least one rocker arm or the at least one valve bridge.
  • an internal combustion engine preferably a stationary gas engine comprising a valve train according to the invention
  • Protection is also sought for a method for operating a valve train, wherein at least one valve is actuated by at least one valve actuating element and the at least one valve actuating element is moved by at least one rocker arm, wherein the position of the at least one valve actuating element relative to the at least one valve is adjusted by varying a volume of fluid in a fluid element and thereby automatically adjusting valve lash or automatically avoiding valve lash.
  • Fig. 1 shows a fist embodiment of the invention.
  • the shown valve train 1 for an internal combustion engine comprises a rocker arm 2 mounted at a bearing 3.
  • the rocker arm 2 can be moved around the bearing 3 by an actuating element 4.
  • the rocker arm 3 comprises further a valve actuating element 5, which is configured to actuate a valve 6.
  • the valve actuating element 5 can be moved by the rocker arm 2 and the at least one valve 6 of the internal combustion engine can be moved by the valve actuating element 5.
  • the bearing 3 is mounted rotationally movable on a shaft 7.
  • this cavity 8 for fluid.
  • this cavity 8 is released as a bore in the rocker arm 2.
  • this cavity 8 delimits a volume, which is filled by a fluid.
  • the volume of the cavity 8 can be varied by moving the valve actuating element 5 relative to the rocker arm 2.
  • the cavity 8 is connected by a conduct 9 with the bearing 3 of the rocker arm 2.
  • the bearing 3 of the rocker arm 2 is used in this embodiment as fluid supplier.
  • fluid which is used for the lubrication of the bearing 3, can be used in the cavity 8.
  • the fluid supplier supplies fluid to the cavity 8. If fluid is passed back through the conduct 9 the fuel supplier is used as fluid reservoir.
  • the conduct 9 is released as a bore in the rocker arm 3. The end of the bore, which forms the cavity 9, is closed by a grub screw 10.
  • the fluid communication of the cavity 8 with the bearing 3 through the conduct 9 can be cut off by a movement of the rocker arm 2 around the shaft 7, because the conduct 9 connected to the bearing 3 through the bore 11 in the shaft 7 of the bearing 3. If the rocker arm 2 moves rotationally relative to the shaft 7 and the bearing 3. Through such a rotation (in order to activate the valve 6) the conduct 9 is moved away from the supply bore 11. In this situation (where no fluid communication between cavity 8 and fluid supplier is given) the volume of the fluid in the cavity 8 cannot be varied and the valve actuating element 5 cannot be moved relative to the rocker arm 3.
  • valve actuating element 5 adjusts a valve drift (caused by the wear of the valve seat) in a position, wherein the cavity 8 is in fluid communication with the fluid supplier.
  • This position corresponds in this embodiment to a non-actuated position of the valve 6.
  • a moving of the valve actuating element 5 relative to the rocker arm 3 is prevented by the blocking of the conduct 9, thereby allowing the actuation of the valve 6.
  • the cavity 8 is connected to the external environment by an orifice 12.
  • the orifice 12 can be replaced by a sealing element to be installed after system de-airing/bleeding. This avoids special requirements on oil cleanliness if oils are used as fluid.
  • a lubrication fluid from the bearing 3 is used for the cavity 8.
  • the lubrication fluid is oil.
  • Fig 2a shows cross section of the particular embodiment of Fig. 1 .
  • This cross section shown by Fig. 2a gives an example how the lubrication fluid for the bearing 3 (which is also used in the cavity 8) can be supplied.
  • the actuating element 4 contacts the push rod 14.
  • This push rod 14 transmits an alternating transversal movement (created by a camshaft for example) to the actuating element 4.
  • the push rod 14 shown can be used as fluid supplier, wherein the push rod 14 has a central bore conveying lubrication fluid to the actuating element 4.
  • the actuating element 4 does also have a central bore leading the lubrication fluid from the push rod 14 to a bore 13 in the rocker arm 2. This bore 13, placed in the rocker arm 2 finally supplies the lubrication fluid to the bearing 3.
  • the shaft 7 is fixed, i.e. not rotatable (per definition a pivot pin).
  • the rocker arm 2 is pivoting around this pin.
  • Fig. 2b shows in more detail the bore 11 in the bearing 3 which can be used to cut off the fluid communication with the cavity 8.
  • a recess 15 is provided on the surface of the shaft 7, which is configured to connect in a first position (shown by Fig 2b and 3a ) of the rocker arm 2 relative to the shaft 7 the cavity 8 with lubrication of the bearing 3 by use of the conduct 9.
  • the bearing 3 is provided with a ring (shown in darker gray), which is fixed on the shaft 7 and has a bore 11.
  • the bearing 3 is released as a hydrostatic bearing, wherein no separate element would be used for the bearing 3, only the pressure of the lubrication would cause a separate layer of lubrication forming the bearing 3 (distance between rocker arm 2 and shaft 7).
  • the bearing 3 is done by a hydrostatic bearing (also a hydrodynamic bearing would be possible) the conduct 9 would have a tubular element between the inner wall of the rocker arm and the outer surface of the shaft. This would only allow a fluid connection between bearing 3 and cavity 8 if the conduct 9 (with his tubular element) would be positioned in alignment over the recess 15. In all other positions (when the conduct 9 is not positioned over the recess 15) there would be no fluid communication between bearing 3 and cavity 8.
  • Fig 3a shows the described embodiment of Fig. 1 and Fig. 2 in a first (non-actuated) position.
  • Fig 3b sows the embodiment of Fig. 1 and 2 in a second (actuated) position.
  • the rocker arm 2 is rotated around the shaft 7.
  • the connection of the cavity 8 with the lubrication of the bearing 3 by the use of the conduct 9 is shut off to keep the volume of fluid in the at least one cavity 8 essentially constant.
  • Fig. 4a and 4b show a further exemplary embodiment of an inventive valve train 1.
  • a helical valve 18 is provided inside the shaft 7.
  • This helical valve 18 is connected to the bearing 3 by a bore 19, which is used as fluid reservoir.
  • the helical calve is connected to a flexible pipe 16, which is located inside the conduct 9 and connects the bore 17/the helical valve 18 with the cavity 8.
  • Fig. 4a shows a fist position (a non-actuated position) of the helical valve 18 and the valve train 1, wherein the valve 6 of the internal combustion engine is closed.
  • the fluid supply in this example the bore 19 together with the bearing 3
  • the conduct 9 more specifically through the flexible pipe 16 placed inside the conduct 9.
  • Fig. 4b shows a second position (an actuated or actuating position) of the helical valve 18 and the valve train 1, wherein the valve 6 of the internal combustion engine is opening or open.
  • the rocker arm 2 and/or the helical valve 18 have been rotated around the shaft 7 (relative to Fig 4a ).
  • the connection between the cavity 8 and the fluid supply (in this example the bore 19 together with the bearing 3) through the conduct 9, more specifically through the flexible pipe 16 placed inside the conduct 9, has been shut off by the helical valve 18.
  • Fig. 5a and 5b are show an embodiment of the invention, wherein the recess 15 on the surface of the shaft 7 extends over a radial section and tapers axially.
  • the shaft 7 is axially movably mounted with respect to the shaft 7 and the bearing 3. This gives the possibility of variable valve timing.
  • An opening time of the valve 6 can be varied by moving the shaft 7 axially.
  • the recess 15 has a small extension on the surface of the shaft 7. If the rocker arm 2 rotates around the shaft 7 from a first (non-actuated) position into a second (actuated or actuating) position this would correspond to the already described functionality of Fig. 1 to 3b .
  • Fig. 6a shows an exemplary embodiment, wherein a valve bridge 20 is provided for actuating at least two vales 6.
  • the cavity 8 is arranged in the valve bridge.
  • the cavity 8 is closed in a similar way to the above described embodiments by a valve actuating element 5.
  • the valve bridge 20 is activated by a rocker arm 2. Inside the valve bridge 20 a conduct 21 is provided to connect the cavity 8 with a fluid supplier (in this case the fluid supplier is a conduct 9 inside the rocker arm 2).
  • the opening and shutting off of the connection between the cavity 8 and fluid supplier in Fig. 6a is performed according to the same principle as described in connection with Fig 4 or 5 .
  • a valve bridge guide 22 is provided to guarantee the position of the valve bridge 20. This valve bridge guide 22 can plunge into the valve bridge 20 depending on the actual position of the valve bridge 20.
  • Fig. 6b shows an embodiment, wherein the valve bridge guide 22 from Fig. 6a is used as supply-pin 24, supplying the cavity 8 with the help of the supply-pin conduct 25.
  • This supply-pin conduct 25 leads in a non-actuated position (first position) of the valve bridge 20 into the conduct 21, which is connected to the cavity 8. If the valve bridge 20 is moved into an activated position the supply-pin 24 plunge into the valve bridge 20 and the connection between conduct 21 and supply-pin conduct 25 is shut off.
  • the supply-pin 24 is a rotational symmetrical element comprising an opening on a connection section between the supply-pin 24 and the at valve bridge 20 (as shown by the detail supply-pin cross section 23), extending in a moving direction of the valve bridge 20 and tapering in a direction normal to a moving direction of the valve bridge.
  • the valve opening times can be variated (as already explained in connection with Fig. 5a and 5b ) by rotating the supply-pin 24 around its own axis of symmetry.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP17207245.6A 2017-12-14 2017-12-14 Ventiltrieb für einen verbrennungsmotor Withdrawn EP3498989A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17207245.6A EP3498989A1 (de) 2017-12-14 2017-12-14 Ventiltrieb für einen verbrennungsmotor
US16/220,015 US20190257219A1 (en) 2017-12-14 2018-12-14 Valve train for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17207245.6A EP3498989A1 (de) 2017-12-14 2017-12-14 Ventiltrieb für einen verbrennungsmotor

Publications (1)

Publication Number Publication Date
EP3498989A1 true EP3498989A1 (de) 2019-06-19

Family

ID=60673550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17207245.6A Withdrawn EP3498989A1 (de) 2017-12-14 2017-12-14 Ventiltrieb für einen verbrennungsmotor

Country Status (2)

Country Link
US (1) US20190257219A1 (de)
EP (1) EP3498989A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11242774B2 (en) * 2019-09-20 2022-02-08 Caterpillar Inc. Rocker assembly with a hydraulic lash adjuster
WO2021110250A1 (en) 2019-12-04 2021-06-10 Wärtsilä Finland Oy An assembly for transmitting force from a rocker arm to an end of two valve stems in an internal combustion piston engine
EP3832076B1 (de) 2019-12-04 2022-08-10 Wärtsilä Finland Oy Anordnung zur übertragung von kraft von einem kipphebel an enden von zwei ventilschäften in einer brennkraftkolbenmaschine

Citations (7)

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JPS61192803A (ja) * 1985-02-22 1986-08-27 Fuji Heavy Ind Ltd ラツシユアジヤスタ装置
DE19741078A1 (de) * 1997-09-18 1999-03-25 Schaeffler Waelzlager Ohg Schwing- oder Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
US6253730B1 (en) * 2000-01-14 2001-07-03 Cummins Engine Company, Inc. Engine compression braking system with integral rocker lever and reset valve
US20110079195A1 (en) * 2009-10-02 2011-04-07 Man Nutzfahrzeuge Ag Internal Combustion Engine Having A Motor Brake Assembly
US8578901B2 (en) * 2004-03-15 2013-11-12 Jacobs Vehicle Systems, Inc. Valve bridge with integrated lost motion system
WO2014001560A1 (en) * 2012-06-29 2014-01-03 Eaton Srl Valve bridge
DE102015211124A1 (de) * 2015-06-17 2016-12-22 Schaeffler Technologies AG & Co. KG Ventiltrieb einer Hubkolbenbrennkraftmaschine

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US4727832A (en) * 1986-06-13 1988-03-01 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Roller rocker arm
US6125828A (en) * 1995-08-08 2000-10-03 Diesel Engine Retarders, Inc. Internal combustion engine with combined cam and electro-hydraulic engine valve control
US5975251A (en) * 1998-04-01 1999-11-02 Diesel Engine Retarders, Inc. Rocker brake assembly with hydraulic lock
DE19858213A1 (de) * 1998-12-17 2000-06-21 Man Nutzfahrzeuge Ag Hydraulisch geregelte, zwangsgesteuerte Ventilhubbetätigung für einen Mehrventilzylinderkopf mit integriertem Ventilspielausgleich
ATE484666T1 (de) * 1999-12-20 2010-10-15 Jacobs Vehicle Systems Inc Verfahren und vorrichtung zum hydraulischen an- und loskoppeln einer motorbremse mittels totgang
DE102008032775A1 (de) * 2008-07-11 2010-01-14 Man Nutzfahrzeuge Aktiengesellschaft Brennkraftmaschine mit einer Motorbremseinrichtung und einem Ventilspielausgleichsmechanismus
EP2677127B1 (de) * 2011-02-15 2017-11-15 Xi, Yong Verfahren und vorrichtung zur rückstellung des ventilhubs zur verwendung in einer motorbremse
BR112017005467B1 (pt) * 2014-09-18 2022-05-17 Eaton Srl Conjunto de balancim de válvula de escape

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS61192803A (ja) * 1985-02-22 1986-08-27 Fuji Heavy Ind Ltd ラツシユアジヤスタ装置
DE19741078A1 (de) * 1997-09-18 1999-03-25 Schaeffler Waelzlager Ohg Schwing- oder Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
US6253730B1 (en) * 2000-01-14 2001-07-03 Cummins Engine Company, Inc. Engine compression braking system with integral rocker lever and reset valve
US8578901B2 (en) * 2004-03-15 2013-11-12 Jacobs Vehicle Systems, Inc. Valve bridge with integrated lost motion system
US20110079195A1 (en) * 2009-10-02 2011-04-07 Man Nutzfahrzeuge Ag Internal Combustion Engine Having A Motor Brake Assembly
WO2014001560A1 (en) * 2012-06-29 2014-01-03 Eaton Srl Valve bridge
DE102015211124A1 (de) * 2015-06-17 2016-12-22 Schaeffler Technologies AG & Co. KG Ventiltrieb einer Hubkolbenbrennkraftmaschine

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