EP0269605B1 - Motorbremse bei einer Brennkraftmaschine für Kraftfahrzeuge - Google Patents

Motorbremse bei einer Brennkraftmaschine für Kraftfahrzeuge Download PDF

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Publication number
EP0269605B1
EP0269605B1 EP87890241A EP87890241A EP0269605B1 EP 0269605 B1 EP0269605 B1 EP 0269605B1 EP 87890241 A EP87890241 A EP 87890241A EP 87890241 A EP87890241 A EP 87890241A EP 0269605 B1 EP0269605 B1 EP 0269605B1
Authority
EP
European Patent Office
Prior art keywords
follower lever
support bearing
cylinder head
engine brake
nut
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.)
Expired - Lifetime
Application number
EP87890241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0269605A1 (de
Inventor
Helmut Dipl.-Ing. Melde-Tuczai
Johann Dipl.-Ing. Aigner
Othmar Dipl.-Ing. Skatsche
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.)
AVL List GmbH
Original Assignee
AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
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 AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH filed Critical AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
Publication of EP0269605A1 publication Critical patent/EP0269605A1/de
Application granted granted Critical
Publication of EP0269605B1 publication Critical patent/EP0269605B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking

Definitions

  • the invention relates to an engine brake in an internal combustion engine for motor vehicles, having an exhaust valve driven by a cam via a rocker arm and a device which keeps the exhaust valve a small gap open during the compression stroke, during braking during that phase in which the base circle of the cam engages the rocker arm touched, a valve stroke between 0.3 and 3 mm, preferably between 0.5 and 2 mm, is established at the outlet valve.
  • Motor brakes of this type are known and represent a permanent brake that is integrated in the motor.
  • the idea of keeping the outlet valve open with a small gap during the compression stroke is well known and has already been implemented by the Mack and Jacobs Manufacturing Company.
  • the Jacobs engine brake was described in SEA paper 387A.
  • a hydraulic element presses directly on the outlet valve.
  • the control and the elements are placed on the cylinder head in a rather complex housing.
  • EP-B1 or 111 232 shows such an embodiment with a combined oil pump.
  • the disadvantage of this engine brake is the complex additional component.
  • the invention has for its object to avoid the disadvantages of these known types of motor brakes and to create a motor brake with a comparable effect, which is, however, much simpler and therefore cheaper.
  • the bearing of the rocker arm is designed to be adjustable in the direction of the bearing force between two end positions assigned to normal operation on the one hand and the brakes on the other hand.
  • the bearing of the rocker arm is formed by a piston which, in a housing inserted into the cylinder head, is freely movable axially within a predetermined stroke range in the direction of the bearing force of the rocker arm and can be pressurized with pressure oil on its front side opposite the bearing of the rocker arm and can thereby be brought into its end position assigned to the braking.
  • This version uses the already existing pressure oil of the internal combustion engine and is therefore easy to control. The control of this engine brake can also be brought into operative connection with the brake system of the vehicle.
  • the housing in which the piston is axially displaceable, is screwed into the cylinder head in the direction of the bearing force of the rocker arm, on the one hand comprises the bearing of the rocker arm and on the other hand, on its side facing away from the bearing of the rocker arm
  • the end face is provided with a nut screwed into an internal thread of the housing, which has an inflow opening for the pressure oil that can be supplied, for example, via a bore in the cylinder head.
  • the bearing of the rocker arm is formed by a screw part that works with a nut firmly connected to the cylinder head and, together with the bearing, two in normal operation and the brakes on the other hand assigned end positions can be brought.
  • the screw part is a threaded piece
  • the nut is designed as a flange and is held on the cylinder head against rotation
  • the threaded piece at the lower end has a pinion that is non-rotatably connected to it, into which a toothed rack engages, and at the upper end has a pan that forms the bearing of the rocker arm.
  • the screw part can also be a part permanently inserted into the cylinder head, e.g. Pressed-in, threaded piece and the screwable nut form the support for the rocker arm and be adjustable via a control rod acting on it.
  • This version is characterized by particular simplicity.
  • FIG. 1 shows an engine brake according to the invention in section
  • FIG. 2 shows another embodiment in section along the cylinder axis
  • FIGS. 3, 4 and 5 each show a detail of different embodiments, both in the embodiment according to FIG. 1 and in the 2 are applicable.
  • the support 10 is axially displaceable in the direction of an axis 10 ', which also indicates the direction of the bearing force P of the rocker arm 8 on the support 10, the upper end position shown being associated with braking and the lower end position being associated with normal operation.
  • the valve stroke is between 0.3 and 3 mm, preferably between 0.5 and 2 mm. It is thereby achieved that the air is not compressed, but passes through the gap 13 of the exhaust valve 3, which acts as a throttle, into the exhaust. The energy in the air is converted into heat at the throttle and partly goes into the exhaust and partly into the cooling water of the internal combustion engine. As a result, the internal combustion engine cannot be supercooled even when descending for a long time.
  • the braking power can thus be roughly doubled compared to a conventional exhaust dust brake, which makes the use of other engine-independent, complex and heavy brakes unnecessary.
  • the exhaust valve 3 is actuated from the cam 12 arranged below the cylinder 14 via the rocker arm 8, the push rod 15 and the rocker arm 16.
  • the rocker arm 8 is supported with its support part 9 on the support 10. In the braking position shown, the exhaust valve 3 is slightly raised from its seat 5 on the cylinder head 1 and here forms the gap 13, which can be approximately 0.5 to 2 mm.
  • the roller 11 of the rocker arm 8 touches the base circle 12 'of the cam 12.
  • crankcase is 17 with the piston 18 and the connecting rod with 19; however, these parts are not explained in more detail because they are not essential to the invention.
  • the support 10 can be operated hydraulically (FIG. 3) or mechanically (FIGS. 4 and 5).
  • a piston 21 which is axially movable in a housing 20 is provided, which is designed in its upper part as a socket 22 and serves to receive the support part 9 of the rocker arm 8.
  • the housing 20 is screwed into the cylinder head _1 and is provided at its lower end with an internal thread 20 'with a nut 23 which forms the lower stop 21a of the piston 21 and has the inflow opening 24 for the pressure oil supplied via the bore 25 in the cylinder head 1 .
  • the upper stop of the piston 21 forming the movable support is designated 21b and the vent hole 26.
  • the bore 25 When braking, the bore 25 is pressurized with oil, whereby the piston 21 is raised to the upper stop 21 b.
  • the pressure in the bore 25 is reduced and the piston 21 is pressed down by the cam 12 or the camshaft. In this position of the support, the exhaust valve remains closed during the base circle phase of the cam.
  • a threaded piece 28 is provided, which is provided with a pinion 29 at the lower end, into which the rack 27 engages and has a socket 22 at the upper end, which has the supporting part 9 of the rocker arm 8 records.
  • the nut 30 is designed as a flange and is held on the cylinder head 1 against rotation by means of screws 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP87890241A 1986-10-30 1987-10-30 Motorbremse bei einer Brennkraftmaschine für Kraftfahrzeuge Expired - Lifetime EP0269605B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0289886A AT404288B (de) 1986-10-30 1986-10-30 Motorbremse bei einer brennkraftmaschine für kraftfahrzeuge
AT2898/86 1986-10-30

Publications (2)

Publication Number Publication Date
EP0269605A1 EP0269605A1 (de) 1988-06-01
EP0269605B1 true EP0269605B1 (de) 1990-12-19

Family

ID=3542067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890241A Expired - Lifetime EP0269605B1 (de) 1986-10-30 1987-10-30 Motorbremse bei einer Brennkraftmaschine für Kraftfahrzeuge

Country Status (6)

Country Link
US (1) US4836162A (enrdf_load_stackoverflow)
EP (1) EP0269605B1 (enrdf_load_stackoverflow)
JP (1) JPS63140809A (enrdf_load_stackoverflow)
AT (1) AT404288B (enrdf_load_stackoverflow)
DE (1) DE3766806D1 (enrdf_load_stackoverflow)
ES (1) ES2004321B3 (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900739A1 (de) * 1989-01-12 1990-07-19 Man Nutzfahrzeuge Ag Verfahren zur steigerung der motorbremsleistung bei viertakt-hubkolben-brennkraftmaschinen
SE466320B (sv) * 1989-02-15 1992-01-27 Volvo Ab Foerfarande och anordning foer motorbromsning med en fyrtakts foerbraenningsmotor
SE468132B (sv) * 1989-12-01 1992-11-09 Volvo Ab Saett och anordning foer styrd upptagning av en foerbraenningsmotors ventilspel
US5215054A (en) * 1990-10-22 1993-06-01 Jenara Enterprises Ltd. Valve control apparatus and method
IT1255447B (it) * 1991-11-08 1995-10-31 Iveco Fiat Motore provvisto di un dispositivo di frenatura continua, particolarmente per un veicolo industriale.
US5205247A (en) * 1992-01-29 1993-04-27 Hoffman Christopher J Infinitely variable lift cam follower with consistent dwell position
US5485819A (en) * 1993-08-04 1996-01-23 Hino Jidosha Kogyo Kabushiki Kaisha Internal combustion engine
US5647318A (en) * 1994-07-29 1997-07-15 Caterpillar Inc. Engine compression braking apparatus and method
US5540201A (en) * 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
US5526784A (en) * 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
DE19538729C2 (de) * 1995-10-18 1998-01-15 Daimler Benz Ag Motorbremsvorrichtung für eine Brennkraftmaschine
US5809964A (en) * 1997-02-03 1998-09-22 Diesel Engine Retarders, Inc. Method and apparatus to accomplish exhaust air recirculation during engine braking and/or exhaust gas recirculation during positive power operation of an internal combustion engine
DE19952909B4 (de) * 1999-11-03 2010-06-24 Schaeffler Kg Schaltbares Abstützelement
US6283090B1 (en) * 1999-11-17 2001-09-04 Caterpillar Inc. Method and apparatus for operating a hydraulically-powered compression release brake assembly on internal combustion engine
US6386160B1 (en) * 1999-12-22 2002-05-14 Jenara Enterprises, Ltd. Valve control apparatus with reset
US6418720B1 (en) 2001-08-31 2002-07-16 Caterpillar Inc. Method and a device for engine braking a four stroke internal combustion engine
US8118004B2 (en) * 2005-12-27 2012-02-21 Ntn Corporation Rocker arm, rocker shaft, valve cap, adjust screw, pivot receiving member, and valve of arm type valve operating device
US7789065B2 (en) * 2008-07-09 2010-09-07 Zhou Yang Engine braking apparatus with mechanical linkage and lash adjustment
US20100037854A1 (en) 2008-08-18 2010-02-18 Zhou Yang Apparatus and method for engine braking
US7984705B2 (en) * 2009-01-05 2011-07-26 Zhou Yang Engine braking apparatus with two-level pressure control valves
DE102013015499A1 (de) * 2013-09-19 2015-03-19 Man Truck & Bus Ag Vorrichtung und Verfahren zum Betätigen zumindest eines Auslassventils einer ventilgesteuerten Brennkraftmaschine
CN113944753B (zh) * 2021-11-10 2024-06-11 北京北方车辆集团有限公司 一种用于特种车辆保压试验的外油箱密封装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2014579A1 (enrdf_load_stackoverflow) * 1969-04-03 1970-11-05

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE335332C (de) * 1916-04-18 1921-03-31 Last Automobilfabrik A G Deuts Auspuff- und Bremssteuerung fuer Explosionskraftmaschinen
US1362500A (en) * 1919-02-24 1920-12-14 Henry H Moeller Valve-controlling means for internal-combustion engines
US1637118A (en) * 1923-11-13 1927-07-26 Kirchensteiner Johann Motor-brake for autos
DE544741C (de) * 1929-10-17 1932-02-22 Herbert Haentzschel Umsteuerung fuer Brennkraftmaschinen, die im Viertakt oder im Zweitakt arbeiten
DE1234443B (de) * 1962-10-23 1967-02-16 Maschf Augsburg Nuernberg Ag Einrichtung zum Umsteuern von Viertakt-Hubkolben-Brennkraftmaschinen zur Verwendung als Motorbremse fuer Fahrzeugbetrieb
US3367312A (en) * 1966-01-28 1968-02-06 White Motor Corp Engine braking system
US3547087A (en) * 1968-08-09 1970-12-15 White Motor Corp Engine valve control for braking operation
US3520287A (en) * 1968-08-09 1970-07-14 White Motor Corp Exhaust valve control for engine braking system
DE1806720A1 (de) * 1968-11-02 1970-06-25 Daimler Benz Ag Ventiltrieb fuer Verbrennungsmotoren
DE2832526A1 (de) * 1978-07-25 1980-02-07 Maschf Augsburg Nuernberg Ag Viertakt-brennkraftmaschine mit motor-auspuffbremse
DE3003569A1 (de) * 1980-02-01 1981-08-06 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zur hydraulischen verstellung des ventilhubes von gaswechselventilen einer hubkolbenbrennkraftmaschine
JPS571620A (en) * 1980-05-27 1982-01-06 Mitsubishi Electric Corp Discharge processing device
JPS5716209A (en) * 1980-06-30 1982-01-27 Mitsubishi Motors Corp Oil hydraulic tappet device
JPS57171011A (en) * 1981-04-13 1982-10-21 Mitsubishi Motors Corp Braking device for multicylinder four stroke cycle internal combustion engine
CA1247483A (en) * 1982-12-09 1988-12-28 Raymond N. Quenneville Compression release engine retarder for multi- cylinder internal combustion engines
DE3471342D1 (en) * 1984-01-30 1988-06-23 Allied Corp Engine valve timing control system
US4697558A (en) * 1986-02-18 1987-10-06 Meneely Vincent A Compression relief engine brake

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2014579A1 (enrdf_load_stackoverflow) * 1969-04-03 1970-11-05

Also Published As

Publication number Publication date
JPH0456126B2 (enrdf_load_stackoverflow) 1992-09-07
ES2004321B3 (es) 1991-06-16
JPS63140809A (ja) 1988-06-13
AT404288B (de) 1998-10-27
ATA289886A (de) 1998-02-15
DE3766806D1 (de) 1991-01-31
ES2004321A4 (es) 1989-01-01
US4836162A (en) 1989-06-06
EP0269605A1 (de) 1988-06-01

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