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WO2014185972A3 - Variable control engine decompression brake - Google Patents

Variable control engine decompression brake Download PDF

Info

Publication number
WO2014185972A3
WO2014185972A3 PCT/US2014/000109 US2014000109W WO2014185972A3 WO 2014185972 A3 WO2014185972 A3 WO 2014185972A3 US 2014000109 W US2014000109 W US 2014000109W WO 2014185972 A3 WO2014185972 A3 WO 2014185972A3
Authority
WO
WIPO (PCT)
Prior art keywords
piston assembly
pressure
control pressure
command
slave 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.)
Ceased
Application number
PCT/US2014/000109
Other languages
French (fr)
Other versions
WO2014185972A2 (en
Inventor
Joseph Reilly
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.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin Corp
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 Parker Hannifin Corp filed Critical Parker Hannifin Corp
Publication of WO2014185972A2 publication Critical patent/WO2014185972A2/en
Publication of WO2014185972A3 publication Critical patent/WO2014185972A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type

Landscapes

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

Abstract

A variable decompression engine brake system includes a master piston assembly that engages an engine prime drive mechanism, and a slave piston assembly including a piston that is moveable within a cylinder, the slave piston assembly being hydraulically connected to the master piston assembly and configured to operate at least one exhaust valve. A control valve has a differential area that sets a control pressure, and the slave piston assembly is configured to actuate the exhaust valves when a pressure within the cylinder reaches the control pressure. The brake system further includes a command solenoid coil that is energized to set a command pressure, and the differential converts the command pressure proportionally to the control pressure for opening of the exhaust valves. The slave piston may reach the control pressure when or after the piston has reached a top dead center position.
PCT/US2014/000109 2013-05-14 2014-05-14 Variable control engine decompression brake Ceased WO2014185972A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361823320P 2013-05-14 2013-05-14
US61/823,320 2013-05-14

Publications (2)

Publication Number Publication Date
WO2014185972A2 WO2014185972A2 (en) 2014-11-20
WO2014185972A3 true WO2014185972A3 (en) 2015-01-22

Family

ID=50943518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/000109 Ceased WO2014185972A2 (en) 2013-05-14 2014-05-14 Variable control engine decompression brake

Country Status (1)

Country Link
WO (1) WO2014185972A2 (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675678A (en) * 1969-12-08 1972-07-11 Modern Eng Co Inc High pressure regulator
US3982693A (en) * 1976-01-16 1976-09-28 General Motors Corporation Orifice plunger valve fuel injector
US4062374A (en) * 1974-05-08 1977-12-13 Sperry Rand Limited Hydraulic valves and hydraulic systems
US4275844A (en) * 1979-11-30 1981-06-30 Caterpillar Tractor Co. Fuel injection nozzle
US4741478A (en) * 1986-11-28 1988-05-03 General Motors Corporation Diesel unit fuel injector with spill assist injection needle valve closure
US5379737A (en) * 1993-08-26 1995-01-10 Jacobs Brake Technology Corporation Electrically controlled timing adjustment for compression release engine brakes
WO1997006355A1 (en) * 1995-08-08 1997-02-20 Diesel Engine Retarders, Inc. Internal combustion engines with combined cam and electro-hydraulic engine valve control
US5682846A (en) * 1996-12-19 1997-11-04 Eaton Corporation Engine valve actuator with differential area pistons
WO2001020150A1 (en) * 1999-09-17 2001-03-22 Diesel Engine Retarders, Inc. Captive volume accumulator for a lost motion system
US20050252484A1 (en) * 2002-04-08 2005-11-17 Richard Vanderpoel Compact lost motion system for variable value actuation
WO2010014932A1 (en) * 2008-07-31 2010-02-04 Jacobs Vehicle Systems, Inc Bias system for dedicated engine braking rocker arm in a lost motion system
US7712449B1 (en) * 2009-05-06 2010-05-11 Jacobs Vehicle Systems, Inc. Lost motion variable valve actuation system for engine braking and early exhaust opening
US20110290206A1 (en) * 2007-03-16 2011-12-01 Jacobs Vehicle Systems, Inc. Rocker shaft pedestal incorporating an engine valve actuation system or engine brake

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675678A (en) * 1969-12-08 1972-07-11 Modern Eng Co Inc High pressure regulator
US4062374A (en) * 1974-05-08 1977-12-13 Sperry Rand Limited Hydraulic valves and hydraulic systems
US3982693A (en) * 1976-01-16 1976-09-28 General Motors Corporation Orifice plunger valve fuel injector
US4275844A (en) * 1979-11-30 1981-06-30 Caterpillar Tractor Co. Fuel injection nozzle
US4741478A (en) * 1986-11-28 1988-05-03 General Motors Corporation Diesel unit fuel injector with spill assist injection needle valve closure
US5379737A (en) * 1993-08-26 1995-01-10 Jacobs Brake Technology Corporation Electrically controlled timing adjustment for compression release engine brakes
WO1997006355A1 (en) * 1995-08-08 1997-02-20 Diesel Engine Retarders, Inc. Internal combustion engines with combined cam and electro-hydraulic engine valve control
US5682846A (en) * 1996-12-19 1997-11-04 Eaton Corporation Engine valve actuator with differential area pistons
WO2001020150A1 (en) * 1999-09-17 2001-03-22 Diesel Engine Retarders, Inc. Captive volume accumulator for a lost motion system
US20050252484A1 (en) * 2002-04-08 2005-11-17 Richard Vanderpoel Compact lost motion system for variable value actuation
US20110290206A1 (en) * 2007-03-16 2011-12-01 Jacobs Vehicle Systems, Inc. Rocker shaft pedestal incorporating an engine valve actuation system or engine brake
WO2010014932A1 (en) * 2008-07-31 2010-02-04 Jacobs Vehicle Systems, Inc Bias system for dedicated engine braking rocker arm in a lost motion system
US7712449B1 (en) * 2009-05-06 2010-05-11 Jacobs Vehicle Systems, Inc. Lost motion variable valve actuation system for engine braking and early exhaust opening

Also Published As

Publication number Publication date
WO2014185972A2 (en) 2014-11-20

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