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GB2028953B - Internal combustion engine with exhaust braking - Google Patents

Internal combustion engine with exhaust braking

Info

Publication number
GB2028953B
GB2028953B GB7925705A GB7925705A GB2028953B GB 2028953 B GB2028953 B GB 2028953B GB 7925705 A GB7925705 A GB 7925705A GB 7925705 A GB7925705 A GB 7925705A GB 2028953 B GB2028953 B GB 2028953B
Authority
GB
United Kingdom
Prior art keywords
tappet
engine
valve
exhaust braking
stop
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
Application number
GB7925705A
Other versions
GB2028953A (en
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Publication of GB2028953A publication Critical patent/GB2028953A/en
Application granted granted Critical
Publication of GB2028953B publication Critical patent/GB2028953B/en
Expired legal-status Critical Current

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
    • 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
    • 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
    • F01L1/14—Tappets; Push rods
    • F01L1/146—Push-rods
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
    • F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/16—Pneumatic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams

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)

Abstract

An internal combustion engine comprising a spring-loaded engine valve (13) actuatable by means of a cam (2), a tappet (4) and a push rod (10), the cam (2) having a pre-lift ramp (5) for effecting exhaust braking of the engine. A single piston (6) is slidable in the tappet (4) between a bottom stop (8) and a top stop (7) therein and biased by a spring (9) against the top stop (7) and/or the push rod (10). The tappet (4) has an inlet (14) for hydraulic, control fluid to bias the piston (6) towards the top stop (7). There is also a valve (17) preventing escape of hydraulic fluid from the tappet (4) during exhaust braking. During normal operation of the engine when the pre-lift ramp (5) lifts the tappet (4) the valve (17) is held open and hydraulic control fluid flows from the tappet (4) so that the piston (6) contacts the bottom stop (8) and the engine valve (13) remains closed, whereas during exhaust braking of the engine when the pre-lift ramp (5) lifts the tappet (4) the valve (17) is closed and hydraulic control fluid cannot flow from the tappet (4) so that the pistons (6) remains against the stop (7) and the engine valve (13) opened to effect exhaust braking. <IMAGE>
GB7925705A 1978-07-25 1979-07-24 Internal combustion engine with exhaust braking Expired GB2028953B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782832542 DE2832542A1 (en) 1978-07-25 1978-07-25 INTERNAL COMBUSTION ENGINE WITH ENGINE BRAKE

Publications (2)

Publication Number Publication Date
GB2028953A GB2028953A (en) 1980-03-12
GB2028953B true GB2028953B (en) 1982-09-15

Family

ID=6045298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7925705A Expired GB2028953B (en) 1978-07-25 1979-07-24 Internal combustion engine with exhaust braking

Country Status (12)

Country Link
JP (1) JPS5517697A (en)
CH (1) CH641873A5 (en)
DD (1) DD145121A1 (en)
DE (1) DE2832542A1 (en)
FR (1) FR2433635A1 (en)
GB (1) GB2028953B (en)
HU (1) HU182525B (en)
IN (1) IN151679B (en)
IT (1) IT1122284B (en)
RO (1) RO80198A (en)
SE (1) SE438888B (en)
SU (1) SU1080751A3 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3026529A1 (en) * 1980-07-12 1982-02-11 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Exhaust valve brake for IC engine - uses hydraulic plunger in tappet to cyclically increase valve drive-line effective length
JPS582302U (en) * 1981-06-29 1983-01-08 いすゞ自動車株式会社 Internal combustion engine hydraulic tappet
JPS5862307A (en) * 1981-10-08 1983-04-13 Hino Motors Ltd Engine braking device
JPS5877137A (en) * 1981-11-04 1983-05-10 Honda Motor Co Ltd Valve driving device with recess function
JPS5917205U (en) * 1982-07-26 1984-02-02 日野自動車株式会社 Internal combustion engine exhaust gas recirculation device
JPS5952008U (en) * 1982-09-29 1984-04-05 アイシン精機株式会社 Hydraulic control unit for variable cylinder with movable rocker arm
FR2547352A1 (en) * 1983-06-08 1984-12-14 Unic Sa Engine brake device operating by varying the timing cycle of an internal combustion engine
JPS60252114A (en) * 1984-05-30 1985-12-12 Hino Motors Ltd Engine brake operating device
JPS60121742A (en) * 1984-07-25 1985-06-29 Hitachi Ltd Marking method in resin molded product
DE4007287A1 (en) * 1990-03-08 1991-09-12 Man Nutzfahrzeuge Ag ENGINE BRAKE FOR AIR COMPRESSING ENGINE
DE4102537A1 (en) * 1991-01-29 1992-07-30 Man Nutzfahrzeuge Ag EXHAUST VALVE TUNEL FOR AN INTERNAL COMBUSTION ENGINE
DE4209775A1 (en) * 1992-03-26 1993-09-30 Man Nutzfahrzeuge Ag Device for controlling an exhaust valve in engine braking mode
JPH0674304U (en) * 1993-04-01 1994-10-21 シマダ産業株式会社 Tipped saw
AT505832B1 (en) 2008-09-18 2011-01-15 Avl List Gmbh ENGINE BRAKING DEVICE FOR AN INTERNAL COMBUSTION ENGINE
DE102009048143A1 (en) * 2009-10-02 2011-04-07 Man Nutzfahrzeuge Aktiengesellschaft Internal combustion engine with an engine brake device
FI20135019L (en) * 2013-01-07 2014-07-08 Waertsilae Finland Oy Valve lifting device and method for driving a valve lifting device
ITUB20152455A1 (en) * 2015-07-24 2017-01-24 Mg 2 Srl POWER SUPPLY UNIT FOR THE DOSAGE OF AT LEAST TWO PRODUCTS, IN PARTICULAR PHARMACEUTICALS IN GRANULES, IN CAPSULES OR SIMILAR
CN110541762B (en) * 2019-09-30 2024-04-02 江苏卓联精密机械有限公司 Engine brake control device with multiple driving sources

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804864A (en) * 1954-08-26 1957-09-03 Henry A Roan Variable valve timing control
DE1053894B (en) * 1955-11-05 1959-03-26 Augsburg Nuernberg A G Zweigni Valve tappets, especially for internal combustion engines, with clearance compensation through a fluid cushion
DE1057385B (en) * 1958-03-08 1959-05-14 Kaelble Gmbh C Internal combustion engine with engine brake
DE1175488B (en) * 1960-09-15 1964-08-06 Briggs & Stratton Corp Valve control for internal combustion engines with reduced compression when starting
US3439661A (en) * 1968-01-11 1969-04-22 Michael A Weiler Controlled displacement hydraulic lifter
US3809033A (en) * 1972-07-11 1974-05-07 Jacobs Mfg Co Rocker arm engine brake system
US3859970A (en) * 1973-01-22 1975-01-14 Allis Chalmers Engine retarder brake
JPS5926769B2 (en) * 1975-05-14 1984-06-30 三菱自動車工業株式会社 Exhaust brake device

Also Published As

Publication number Publication date
DD145121A1 (en) 1980-11-19
JPS6321003B2 (en) 1988-05-02
IT1122284B (en) 1986-04-23
SE7906342L (en) 1980-01-26
DE2832542A1 (en) 1980-02-07
HU182525B (en) 1984-01-30
IT7924584A0 (en) 1979-07-24
IN151679B (en) 1983-07-02
SE438888B (en) 1985-05-13
RO80198A (en) 1982-10-26
SU1080751A3 (en) 1984-03-15
CH641873A5 (en) 1984-03-15
FR2433635A1 (en) 1980-03-14
GB2028953A (en) 1980-03-12
JPS5517697A (en) 1980-02-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee