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EP1143121A3 - Engine braking system with displaceable rocker arm pivot centre - Google Patents

Engine braking system with displaceable rocker arm pivot centre Download PDF

Info

Publication number
EP1143121A3
EP1143121A3 EP01105766A EP01105766A EP1143121A3 EP 1143121 A3 EP1143121 A3 EP 1143121A3 EP 01105766 A EP01105766 A EP 01105766A EP 01105766 A EP01105766 A EP 01105766A EP 1143121 A3 EP1143121 A3 EP 1143121A3
Authority
EP
European Patent Office
Prior art keywords
rocker arm
rocker
engages
braking system
piston
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
Application number
EP01105766A
Other languages
German (de)
French (fr)
Other versions
EP1143121B1 (en
EP1143121A2 (en
Inventor
David James Haugen
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP1143121A2 publication Critical patent/EP1143121A2/en
Publication of EP1143121A3 publication Critical patent/EP1143121A3/en
Application granted granted Critical
Publication of EP1143121B1 publication Critical patent/EP1143121B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F01L1/12—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
    • 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
    • F01L2305/00—Valve arrangements comprising rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Braking Arrangements (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

An engine compression braking system includes an exhaust rocker arm pivotally supported on rocker shaft. One end of the rocker arm carries a roller which engages a camshaft which has a lost motion bump formed thereon. The other end of the rocker arm engages an exhaust valve stem assembly. A part of the rocker shaft engages a pressure operated piston. Extension of the piston moves the rocker shaft transversely to its axis, so that the rocker arm can selectively react to or ignore the lost motion portion bump. A pressure control system includes a solenoid operated valve controlled by an operator controlled switch, so that the piston selectively applies a light force or a very high force to the rocker arm rocker shaft, thus controlling the pivot point of the rocker arm.
EP01105766A 2000-03-21 2001-03-08 Engine braking system with displaceable rocker arm pivot centre Expired - Lifetime EP1143121B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US528936 1990-05-25
US09/528,936 US6213091B1 (en) 2000-03-21 2000-03-21 Engine compression brake system

Publications (3)

Publication Number Publication Date
EP1143121A2 EP1143121A2 (en) 2001-10-10
EP1143121A3 true EP1143121A3 (en) 2001-10-24
EP1143121B1 EP1143121B1 (en) 2005-06-08

Family

ID=24107828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105766A Expired - Lifetime EP1143121B1 (en) 2000-03-21 2001-03-08 Engine braking system with displaceable rocker arm pivot centre

Country Status (6)

Country Link
US (1) US6213091B1 (en)
EP (1) EP1143121B1 (en)
AT (1) ATE297499T1 (en)
CA (1) CA2322988A1 (en)
DE (1) DE50106426D1 (en)
ZA (1) ZA200102329B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8087392B2 (en) 2007-06-01 2012-01-03 Jacobs Vehicle Systems, Inc. Variable valve actuation system
JP5995857B2 (en) 2010-11-15 2016-09-21 アカーテース パワー，インク． Two-cycle opposed piston engine with compressed air discharge for engine brake
JP6144206B2 (en) 2011-02-23 2017-06-07 アカーテース パワー，インク． 2-stroke opposed piston engine with engine brake
DE102013019000A1 (en) * 2013-11-13 2015-05-13 Daimler Ag Engine braking device for an internal combustion engine
CN103775154B (en) * 2014-01-26 2016-01-20 天津大学 A kind of hydraulic type changeable air valve rocker arm system
US10024247B2 (en) * 2015-03-25 2018-07-17 Cummins Inc. Engine brake lever
US9429049B2 (en) 2015-05-11 2016-08-30 Caterpillar Inc. Intake valve actuation system for dual fuel engine
CN107143394B (en) * 2017-05-27 2023-05-12 东风商用车有限公司 Split rocker arm braking mechanism of heavy diesel engine of commercial vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR52025E (en) * 1941-12-10 1943-06-30 Daimler Benz Ag Air intake from the working cylinder of an internal combustion engine, in particular for compressed air brakes and diesel engines
GB1250612A (en) * 1968-03-01 1971-10-20
JPS5891316A (en) * 1981-11-27 1983-05-31 Honda Motor Co Ltd Overhead valve type control velve mechanism
JPS59213914A (en) * 1983-05-18 1984-12-03 Mazda Motor Corp Inoperative actuating device of valve in engine
US4587936A (en) * 1981-09-10 1986-05-13 Honda Giken Kogyo Kabushiki Kaisha Control apparatus for intake and exhaust valves of an internal combustion engine
JPS6258005A (en) * 1985-09-07 1987-03-13 Yamaha Motor Co Ltd Starting decompressor for engine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367312A (en) 1966-01-28 1968-02-06 White Motor Corp Engine braking system
US3809033A (en) 1972-07-11 1974-05-07 Jacobs Mfg Co Rocker arm engine brake system
US4572114A (en) 1984-06-01 1986-02-25 The Jacobs Manufacturing Company Process and apparatus for compression release engine retarding producing two compression release events per cylinder per engine cycle
US4723516A (en) 1985-11-25 1988-02-09 Slagley Michael W Valve open duration and timing controller
US4643141A (en) 1986-01-26 1987-02-17 Bledsoe Phillip G Internal combustion engine valve lift and cam duration control system
IT1255447B (en) 1991-11-08 1995-10-31 Iveco Fiat ENGINE EQUIPPED WITH A CONTINUOUS BRAKING DEVICE, PARTICULARLY FOR AN INDUSTRIAL VEHICLE.
JPH08338215A (en) 1995-06-15 1996-12-24 Unisia Jecs Corp Decompression brake device
US5645031A (en) * 1996-01-18 1997-07-08 Meneely; Vincent Allan Compression release brake with hydraulically adjustable timing
US5611308A (en) * 1996-02-06 1997-03-18 Caterpillar Inc. Apparatus for interconnecting an actuator and an exhaust valve opening member
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR52025E (en) * 1941-12-10 1943-06-30 Daimler Benz Ag Air intake from the working cylinder of an internal combustion engine, in particular for compressed air brakes and diesel engines
GB1250612A (en) * 1968-03-01 1971-10-20
US4587936A (en) * 1981-09-10 1986-05-13 Honda Giken Kogyo Kabushiki Kaisha Control apparatus for intake and exhaust valves of an internal combustion engine
JPS5891316A (en) * 1981-11-27 1983-05-31 Honda Motor Co Ltd Overhead valve type control velve mechanism
JPS59213914A (en) * 1983-05-18 1984-12-03 Mazda Motor Corp Inoperative actuating device of valve in engine
JPS6258005A (en) * 1985-09-07 1987-03-13 Yamaha Motor Co Ltd Starting decompressor for engine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 189 (M - 237) 18 August 1983 (1983-08-18) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 084 (M - 371) 13 April 1985 (1985-04-13) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 250 (M - 616) 14 August 1987 (1987-08-14) *

Also Published As

Publication number Publication date
ZA200102329B (en) 2002-09-20
CA2322988A1 (en) 2001-09-21
ATE297499T1 (en) 2005-06-15
US6213091B1 (en) 2001-04-10
DE50106426D1 (en) 2005-07-14
EP1143121B1 (en) 2005-06-08
EP1143121A2 (en) 2001-10-10

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