US3332405A - Internal combustion engine brake - Google Patents

Internal combustion engine brake Download PDF

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Publication number
US3332405A
US3332405A US491977A US49197765A US3332405A US 3332405 A US3332405 A US 3332405A US 491977 A US491977 A US 491977A US 49197765 A US49197765 A US 49197765A US 3332405 A US3332405 A US 3332405A
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United States
Prior art keywords
piston
rocker arm
latch piston
latch
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.)
Expired - Lifetime
Application number
US491977A
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English (en)
Inventor
Girard S Haviland
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.)
Jacobs Vehicle Systems Inc
Original Assignee
Jacobs Manufacturing 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 Jacobs Manufacturing Co filed Critical Jacobs Manufacturing Co
Priority to US491977A priority Critical patent/US3332405A/en
Priority to GB38326/66A priority patent/GB1126269A/en
Priority to DE1526485A priority patent/DE1526485C3/de
Priority to SE12778/66A priority patent/SE307037B/xx
Application granted granted Critical
Publication of US3332405A publication Critical patent/US3332405A/en
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
    • F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type
    • 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

Definitions

  • the general object of this invention is to provide improved control mechanism for this purpose, which is economical to manufacture because of its limited number of parts; which occupies very limited space so as to be practical for incorporation in an engine; and which is efiicient in its operation and reliable for the purposes intended because of its extremely fast on-and-oif action.
  • the invention is especially suited for use in motor vehicles as a means auxiliary to customary braking mechanism for retarding the speed of the vehicle when needed.
  • Such need is particularly demanded by heavy hauling vehicles to share the burden of customary brakes. This need may arise when the vehicle is descending a long steep grade, in cases of brake failure, and in other situations.
  • FIG. 1 is a schematic view showing a rocker arm associated with the exhaust valves of one cylinder of a bank of several cylinders of an internal combustion engine of the fuel injector or diesel type, served by an overhead camshaft which is cooperable with the rocker arm to open at the normal time the exhaust valves of the cylinder, and with which the present invention is associated for selectively causing the exhaust valves to open at or near the end of a compression stroke of the piston;
  • FIG. 2 is a section taken on line 22 of FIG. 1, but showing the location of the rocker arm shaft as it appears in the physical structure;
  • FIG. 3 is a detail showing the position of the auxiliary cam relative to the latch piston spring
  • FIGS. 4 and 5 correspond respectively to FIGS. 1 and 2 in operative condition
  • FIG. 6 is a view similar to FIG. 2 but showing a modification in the means for limiting the extent of movement of the latch piston;
  • FIG. 7 is a section on line 7-7 of FIG 6;
  • FIG. 8 schematically shows the invention in modified form as applied to a cylinder of an internal combustion engine of the non-overhead camshaft type
  • FIG. 9 is a section taken on line 99 of FIG. 8.
  • FIGS. l-5 the invention is shown as applied in an internal combustion engine of the fuel injector or diesel type to one cylinder 10 of a bank of piston cylinders.
  • the piston may be of the four-stroke or two-stroke cycle type.
  • the usual fuel injector and air intake mechanism associated with the cylinder 10 are not shown since only so much of the engine as is required for an understanding of the invention is illustrated.
  • the cylinder 10 is served by a pair of exhaust valves 11 normally held in closed condition by the usual spring means 12. Both valves are actuable to open condition by means of a common rocker arm 13 pivoted upon a rocker arm shaft 14.
  • the rocker arm is actuable by means of an overhead exhaust camshaft 15, shown in broken line, to open the exhaust valves at the normal or usual time in the cycle of the related piston 16, and also at or near the end of the compression stroke of the piston.
  • the camshaft is oper- Patented July 25, 1967 able in conventional manner by means of a crankshaft (not shown).
  • the camshaft carries a regular cam 17 (broken line) which is cooperable at the normal time in a piston cycle with a roller 18 mounted in the rocker arm to pivot the latter to open the exhaust valves.
  • the camshaft also carries an auxiliary cam 19, (broken line) which is cooperable with a latch piston 21 in the rocker arm to cause pivoting of the rocker arm to open the exhaust valves at or near the end of a compression stroke, the timing of the opening of such valves being determined by the angular position of the cam upon the cam haft.
  • auxiliary cam 19 (broken line) which is cooperable with a latch piston 21 in the rocker arm to cause pivoting of the rocker arm to open the exhaust valves at or near the end of a compression stroke, the timing of the opening of such valves being determined by the angular position of the cam upon the cam haft.
  • the latch piston is selectively controlled so as to be cooperable with the auxiliary cam only when the occasion demands.
  • the latch piston is disposed in a socket or bore 22 formed below the auxiliary cam in the upper surface of the rocker arm.
  • the latch piston is hydraulically movable upwardly for a limited distance above the surface of the rocker arm to a position as in FIG. 5 wherein its projecting surface is engageable by the auxiliary cam 19 as the camshaft rotates.
  • a stop piece 23 anchored by screw means 24 t9 the surface of the rocker arm has a lip portion 25 which overhangs the bore 22 and cooperates with the latch piston to limit the extent of upward movement of the latter.
  • a spring 26 anchored to the stop piece has a pair of bifurcated arms 27 overhanging and constantly pressing downwardly upon the upper surface of the latch piston.
  • the arms of the spring serve to hasten return of the latch piston to normal position out of the path of rotation of the auxiliary cam when hydraulic pressure beneath the latch piston is relaxed.
  • the auxiliary cam 19, as appears in FIG. 3, is disposed for rotation by the camshaft in the bifurcation 28 between the arms of the spring so as to engage the latch piston in the raised position of the latter.
  • the means controlling movement of the latch piston includes a solenoid valve unit 29 selectively operable by the operator.
  • a manual switch means (not shown) on the instrument panel or a switch associated with the foot brake or other suitable means may be employed for this selective operation.
  • the solenoid valve has a normal deenergized condition, as in FIG. 1, wherein an intake or supply passage 31 connected through a pump 32 to the engine oil sump (not shown) is blocked from communication with the bore of the latch piston. When the solenoid valve is in its energized or operated condition, as in FIG.
  • Thecontrol valve unit includes a clapper valve seat 39 resting upon an annular shoulder at the bottom of a counterbore 42 formed in a side of the rocker arm.
  • a plug 43 screwed into the counterbore has a short end skirt abutting the clapper valve seat 39.
  • This construction provides a narrow space interiorly of the skirt above the clapper valve seat, in which space a clapper or disc valve 45 is movable relative to a central opening of the seat 39.
  • the clapper valve is normally held in open condition, as in FIG. 1, by means of a dump finger 46, whereby the valve chamber 37 is connected through the open clapper valve 45 with radial ports communicating with a passage 47 in the rocker arm. Passage 47 is connected with the bottom end of the latch piston bore.
  • the dump finger extends with clearance at 48 through a head end of a dump piston 49; and the dump finger has a head 51 resting within the interior of the dump piston upon a spring 52.
  • This spring presses the head of the dump finger relative to the dump piston so that a seat 53 about the base of the dump finger normally seals the clearance 48.
  • the bias of spring 52 normally holds the dump piston and the dump finger raised so that the dump finger holds the clapper valve 45 clear of its seat, as in FIG. 1.
  • a light spring 50 keeps clapper valve 45 urged toward seat 39.
  • energization of the solenoid valve unit 29 permits sump oil to be pumped through the solenoid valve to the interior chamber 35 of the rocker arm, and from the latter through port 36 to the control valve unit chamber 37.
  • the sump oil which is under a constant pump pressure of 50 p.s.i., acts over the head end of the dump piston 49 and forces the latter downwardly with the dump finger as a unit against the resistance of spring 52, allowing the clapper valve 45 to drop upon its seat.
  • the pressurized sump oil forces its way past the clapper valve into passage 47 leading to the underside of the latch piston, causing the latter to project out of the rocker arm against the resistance of spring 26 until it is limited by the stop 25 against further outward movement, as in FIG. 5.
  • the clapper valve when unsupported by the dump finger acts in the manner of a check valve allowing flow of sump oil to the bore 22 of the latch piston but blocking return therefrom, whereby the latch piston becomes hydraulically locked in its moved position as long as the solenoid valve unit is held in its energized condition. While the latch piston is so locked, rotation of the camshaft brings the auxiliary cam 19 into camming engagement with the projecting latch piston at or about the end of the compression stroke of the engine piston 16.
  • the solenoid valve 29 When the solenoid valve 29 is de-energized, it returns to normal position, as in FIG. 1.
  • the supply or intake pasage 31 is then again blocked from the outlet passage 34, and the outlet passage is placed in communication through the solenoid valve with the relief passage 33.
  • the latter passage is controlled by a relief valve 54 which allows pressurized fluid in the outlet passage 34 to flow to sump thereby relaxing the pressure of the fluid in the dump finger chamber 37.
  • the dump piston is returned by its spring 52 upwardly with the dump finger to reopen the clapper valve.
  • the pressure in chamber 37 of the control valve unit should for some reason exceed 50 p.s.i., the excess pressure will act through the clearance 48 upon the head 51 of the dump finger to depress the latter against the spring 52 so as to unseal the clearance 48, whereupon the excessive pressure will be relieved by fluid flow around the head of the dump finger and through the open bottom end of the dump piston to a relief port 55 connected to sump.
  • a hydraulic lube line 56 independent of the solenoid valve unit and carrying oil at less than 2 p.s.i. has a connection with the rocker arm for purposes of lubricat ing the rocker arm relative to the rocker arm shaft through fine orifices (not shown).
  • This fluid also serves to maintain the hydraulic passages between the solenoid valve and the piston bore filled during the time the latch piston and solenoid valve are de-activated.
  • An advantage of this arrangement is that the filled passages allow the latch piston to respond immediately to energization of the solenoid valve and move to its active position.
  • An advantage of the reilef valve 54 is that it permits immediate relaxation of pressure in chamber 37 and below the latch piston, thus allowing fast de-activation of the latter.
  • FIGS. 6 and 7 show a variation in the means for limiting the extent of movement of the latch piston relative to the rocker arm.
  • the latch piston 21a is formed with a transverse hole 76.
  • a stop pin 77 of smaller diameter than the hole 76 is fixed in the rocker arm 13 and extends through the hole.
  • the upper wall area of the hole abuts under the tension of a return spring 78 upon the stop pin in the normal disabled position of the latch piston.
  • the spring is confined in a bore 79 directly below the stop pin, and it limits at its bottom upon a plug 81 Bore 79 is a smaller diameter than the stop pin; and When the latch piston its hydraulically actuated, the lower Wall area of hole 76 cooperates with the pin to limit the extent of projection of the latch piston from its socket 22.
  • FIGS. 8 and 9 the invention is shown as applied to a piston cylinder 57 having a pair of exhaust valves 58 operable in an internal combustion engine by a camshaft 60 of the non-overhead type.
  • the exhaust valves are connected by a bridge 59.
  • a rocker arm 61 is pivotable against the bridge to force the exhaust valves to open condition.
  • the usual spring means 62 normally holds the valves closed.
  • the rocker arm is pivotable about a shaft 63 relative to the bridge of the exhaust valves by means of one or the other of a pair of push rods 64 and 65 to which the rocker arm is connected in common.
  • Push rod 64 carries a cam follower or lifter 66 which continuously rests upon a regular cam 67 of the camshaft.
  • Cam 67 cooperates with the follower to lift the push rod 64 and pivot the common rocker arm 61 to cause the exhaust valves 58 to open at the usual or normal time in the cycle of the engine piston 68.
  • the other push rod 65 carries at its end a lifter or tail-piece 69 having slidable movement in the engine block 70.
  • a latch piston 72 is slidable in and out of a bore or socket 73 formed in the tail-piece.
  • An auxiliary cam 74 also carried by the camshaft 60 is cooperable with this latch piston when the occasion demands to pivot the rocker arm 61 and cause opening of the exhaust valves at or about the end of a compression stroke of the piston 68 of the engine.
  • the control valve unit 38 is shown as mounted in the engine block in this version of the invention. In the operation of this version of the invention, the regular cam 67 functions at the normal time in a cycle of the related engine piston to open the exhaust valves 58 to permit the escape of spent gases.
  • a related solenoid valve unit 29 When it is desired to retard the engines speed for breaking purposes, a related solenoid valve unit 29 is operated, causing the latch piston 72 to be hydraulically projected to the extent permitted by the pin '75 and locked outwardly of its socket in the path of the rotating auxiliary cam 74, as the hydraulic fiuid flows from the solenoid valve unit through the control valve 38 to the socket of the latch piston.
  • the auxiliary cam 74 next cooperates with the projected latch piston to pivot the rocker arm 61 to open the exhaust valves at or about the end of the compression stroke of the piston of the engine.
  • the valve springs 62 function to re-close the exhaust valves following blow-down during the stroke succeeding the compression stroke.
  • the regular cam 67 continues as usual, despite the projected condition of the latch piston 72, to cause opening of the exhaust valves at the usual time in the cycle of the piston 68 of the engine.
  • De-energization of the solenoid valve unit causes the oil trapped at the rear of the latch piston to return through the control valve unit and solenoid valve unit to sump in the manner earlier explained.
  • the engine is equipped with customary fuel shut-oft" mechanism.
  • the latter (not shown) may be conventional fuel metering means, a solenoid valve, or other suitable control operable upon release by the operator of the usual fuel control foot lever to shut off fuel flow to the engine.
  • an internal combustion engine including a piston cylinder having an exhaust valve, a spring normally holding the exhaust valve closed, a rocker arm pivotable to open said valve, a rotatable camshaft, and a cam carried by the camshaft cooperable with the rocker arm to pivot the latter to open the exhaust valve at a normal time in the cycle of the piston in the piston cylinder, an auxiliary cam carried by the camshaft, a hydraulically actuable latch piston movable in a bore provided in the rocker arm, the latch piston having an hydraulically actuated condition wherein it projects from the rocker arm and in which condition the auxiliary cam has cooperation with the latch piston to pivot the rocker arm to open the exhaust valve at a time other than the said normal time, and the latch piston having a normal condition wherein it is retracted in the rocker arm and is disabled from such cooperation with the auxiliary cam to so pivot the rocker arm.
  • return spring means constantly biases the latch piston to its normal condition.
  • piston cylinder includes a plurality of exhaust valves and the rocker arm is common to and pivotable to open all of said exhaust valves.
  • control means is provided for selectively controlling flow of hydraulic actuating oil to the latch piston and trapping it behind the latch piston.
  • control means comprises passage means connected below the latch piston with the latch piston bore, a hydraulic pressure oil supply line, a solenoid valve unit having an energized condition connecting the supply line with the passage means, a control valve unit in the passage means responsive to flow of pressurized oil from the solenoid valve unit into the passage means to allow oil flow through the passage means to the bore of the latch piston and to block return oil flow from the bore to the solenoid valve.
  • control means includes a relief port in the solenoid valve unit, the solenoid valve unit having a de-energized condition connecting the passage means with the relief port and sealing off the supply line, and the control valve unit being responsive to de-energization of the solenoid valve unit to connect the latch piston bore through the passage means with the relief port.
  • a rocker arm shaft pivotally supports the rocker arm, the rocker arm shaft defines an internal chamber forming between the control valve unit and the solenoid valve unit part of the passage means, a lube line independent of the solenoid valve constantly supplies the internal chamber with hydraulic fluid at a pressure not exceeding said predetermined minimum, and there being fine orifices in the rocker arm shaft permitting bleeding of lubricant through the orifices to the rocker arm.

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  • 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)
US491977A 1965-10-01 1965-10-01 Internal combustion engine brake Expired - Lifetime US3332405A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US491977A US3332405A (en) 1965-10-01 1965-10-01 Internal combustion engine brake
GB38326/66A GB1126269A (en) 1965-10-01 1966-08-26 Internal combustion engine brake
DE1526485A DE1526485C3 (de) 1965-10-01 1966-09-10 Dekompresskmseinrichtung für Brennkraftmaschinen
SE12778/66A SE307037B (en:Method) 1965-10-01 1966-09-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US491977A US3332405A (en) 1965-10-01 1965-10-01 Internal combustion engine brake

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US3332405A true US3332405A (en) 1967-07-25

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US491977A Expired - Lifetime US3332405A (en) 1965-10-01 1965-10-01 Internal combustion engine brake

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US (1) US3332405A (en:Method)
DE (1) DE1526485C3 (en:Method)
GB (1) GB1126269A (en:Method)
SE (1) SE307037B (en:Method)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439662A (en) * 1967-09-18 1969-04-22 Stanley A Jones Variably timed brake for an automotive vehicle engine
US3520287A (en) * 1968-08-09 1970-07-14 White Motor Corp Exhaust valve control for engine braking system
US3809033A (en) * 1972-07-11 1974-05-07 Jacobs Mfg Co Rocker arm engine brake system
US4932372A (en) * 1988-05-02 1990-06-12 Pacific Diesel Brake Co. Apparatus and method for retarding a turbocharged engine
US5477824A (en) * 1994-07-14 1995-12-26 Cummins Engine Company, Inc. Solenoid valve for compression-type engine retarder
US5526784A (en) * 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
US5540201A (en) * 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
WO1996035861A1 (en) * 1995-05-12 1996-11-14 Caterpillar Inc. Compression braking system
US5626116A (en) * 1995-11-28 1997-05-06 Cummins Engine Company, Inc. Dedicated rocker lever and cam assembly for a compression braking system
US5647318A (en) * 1994-07-29 1997-07-15 Caterpillar Inc. Engine compression braking apparatus and method
WO2001020151A1 (en) * 1999-09-17 2001-03-22 Diesel Engine Retarders, Inc. Integrated lost motion rocker brake with control valve for lost motion clip/reset
US6234143B1 (en) 1999-07-19 2001-05-22 Mack Trucks, Inc. Engine exhaust brake having a single valve actuation
WO2001046578A1 (en) 1999-12-20 2001-06-28 Diesel Engine Retarders, Inc. Method and apparatus for hydraulic clip and reset of engine brake systems utilizing lost motion
US6253730B1 (en) 2000-01-14 2001-07-03 Cummins Engine Company, Inc. Engine compression braking system with integral rocker lever and reset valve
US6293248B1 (en) 1999-09-22 2001-09-25 Mack Trucks, Inc. Two-cycle compression braking on a four stroke engine using hydraulic lash adjustment
US6314926B1 (en) 1999-05-24 2001-11-13 Jenera Enterprises Ltd Valve control apparatus
US6871622B2 (en) 2002-10-18 2005-03-29 Maclean-Fogg Company Leakdown plunger
US7028654B2 (en) 2002-10-18 2006-04-18 The Maclean-Fogg Company Metering socket
US7128034B2 (en) 2002-10-18 2006-10-31 Maclean-Fogg Company Valve lifter body
US7191745B2 (en) 2002-10-18 2007-03-20 Maclean-Fogg Company Valve operating assembly
US7273026B2 (en) 2002-10-18 2007-09-25 Maclean-Fogg Company Roller follower body
US20130255612A1 (en) * 2008-07-22 2013-10-03 Eaton Corporation System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a control gallery
US9194261B2 (en) 2011-03-18 2015-11-24 Eaton Corporation Custom VVA rocker arms for left hand and right hand orientations
US9228454B2 (en) 2010-03-19 2016-01-05 Eaton Coporation Systems, methods and devices for rocker arm position sensing
USD750670S1 (en) 2013-02-22 2016-03-01 Eaton Corporation Rocker arm
US9284859B2 (en) 2010-03-19 2016-03-15 Eaton Corporation Systems, methods, and devices for valve stem position sensing
US9581058B2 (en) 2010-08-13 2017-02-28 Eaton Corporation Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US9644503B2 (en) 2008-07-22 2017-05-09 Eaton Corporation System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a hydraulic lash adjuster gallery
US9702279B2 (en) 2010-03-19 2017-07-11 Eaton Corporation Sensing and control of a variable valve actuation system
US9726052B2 (en) 2010-03-19 2017-08-08 Eaton Corporation Rocker arm assembly and components therefor
US9822673B2 (en) 2010-03-19 2017-11-21 Eaton Corporation Latch interface for a valve actuating device
US9869211B2 (en) 2014-03-03 2018-01-16 Eaton Corporation Valve actuating device and method of making same
US9874122B2 (en) 2010-03-19 2018-01-23 Eaton Corporation Rocker assembly having improved durability
US9938865B2 (en) 2008-07-22 2018-04-10 Eaton Corporation Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US10087790B2 (en) 2009-07-22 2018-10-02 Eaton Corporation Cylinder head arrangement for variable valve actuation rocker arm assemblies
US10415439B2 (en) 2008-07-22 2019-09-17 Eaton Intelligent Power Limited Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US10526926B2 (en) 2015-05-18 2020-01-07 Eaton Srl Rocker arm having oil release valve that operates as an accumulator
US11181013B2 (en) 2009-07-22 2021-11-23 Eaton Intelligent Power Limited Cylinder head arrangement for variable valve actuation rocker arm assemblies
US11549405B2 (en) * 2019-01-24 2023-01-10 Eaton Intelligent Power Limited Rocker arm assembly having lash management for cylinder deactivation and engine brake configuration
WO2023019616A1 (zh) * 2021-08-17 2023-02-23 浙江黎明智造股份有限公司 一种节能减耗的发动机制动装置
US11788439B2 (en) 2010-03-19 2023-10-17 Eaton Intelligent Power Limited Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

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DE3003566A1 (de) * 1980-02-01 1981-08-06 Klöckner-Humboldt-Deutz AG, 5000 Köln Bremsvorrichtung fuer eine ventilgesteuerte brennkraftmaschine
DE4025569C1 (en) * 1990-08-11 1991-07-18 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Valve brake for vehicle IC engine - has separately controllable cylinder outlet valves for drive and braking functions
DE10303567A1 (de) 2003-01-30 2004-08-12 Daimlerchrysler Ag Hydraulischer Mitnehmerkipphebel
RU2479735C1 (ru) * 2009-01-05 2013-04-20 Шанхай Юниверсун Отоупартс Ко., Лтд Устройства и способы торможения двигателем

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US2002196A (en) * 1931-03-09 1935-05-21 Int Motor Co Engine brake
US3220392A (en) * 1962-06-04 1965-11-30 Clessie L Cummins Vehicle engine braking and fuel control system

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439662A (en) * 1967-09-18 1969-04-22 Stanley A Jones Variably timed brake for an automotive vehicle engine
US3520287A (en) * 1968-08-09 1970-07-14 White Motor Corp Exhaust valve control for engine braking system
US3809033A (en) * 1972-07-11 1974-05-07 Jacobs Mfg Co Rocker arm engine brake system
US4932372A (en) * 1988-05-02 1990-06-12 Pacific Diesel Brake Co. Apparatus and method for retarding a turbocharged engine
US5477824A (en) * 1994-07-14 1995-12-26 Cummins Engine Company, Inc. Solenoid valve for compression-type engine retarder
EP0692615A1 (en) 1994-07-14 1996-01-17 Cummins Engine Company, Inc. A solenoid valve and an engine retarder braking system
US5540201A (en) * 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
US5647318A (en) * 1994-07-29 1997-07-15 Caterpillar Inc. Engine compression braking apparatus and method
US5526784A (en) * 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
WO1996035861A1 (en) * 1995-05-12 1996-11-14 Caterpillar Inc. Compression braking system
US5626116A (en) * 1995-11-28 1997-05-06 Cummins Engine Company, Inc. Dedicated rocker lever and cam assembly for a compression braking system
US6314926B1 (en) 1999-05-24 2001-11-13 Jenera Enterprises Ltd Valve control apparatus
US6234143B1 (en) 1999-07-19 2001-05-22 Mack Trucks, Inc. Engine exhaust brake having a single valve actuation
WO2001020151A1 (en) * 1999-09-17 2001-03-22 Diesel Engine Retarders, Inc. Integrated lost motion rocker brake with control valve for lost motion clip/reset
US6334429B1 (en) 1999-09-17 2002-01-01 Diesel Engine Retarders Integrated lost motion rocker brake with control valve for lost motion clip/reset
US6293248B1 (en) 1999-09-22 2001-09-25 Mack Trucks, Inc. Two-cycle compression braking on a four stroke engine using hydraulic lash adjustment
WO2001046578A1 (en) 1999-12-20 2001-06-28 Diesel Engine Retarders, Inc. Method and apparatus for hydraulic clip and reset of engine brake systems utilizing lost motion
EP1242735A4 (en) * 1999-12-20 2009-06-03 Diesel Engine Retarders Inc METHOD AND DEVICE FOR HYDRAULIC INPUT AND RELEASE OF A MOTOR BRAKE BY TOTGANG
US6253730B1 (en) 2000-01-14 2001-07-03 Cummins Engine Company, Inc. Engine compression braking system with integral rocker lever and reset valve
US7273026B2 (en) 2002-10-18 2007-09-25 Maclean-Fogg Company Roller follower body
US7128034B2 (en) 2002-10-18 2006-10-31 Maclean-Fogg Company Valve lifter body
US7191745B2 (en) 2002-10-18 2007-03-20 Maclean-Fogg Company Valve operating assembly
US7028654B2 (en) 2002-10-18 2006-04-18 The Maclean-Fogg Company Metering socket
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Also Published As

Publication number Publication date
DE1526485A1 (de) 1970-03-19
DE1526485B2 (de) 1975-03-20
SE307037B (en:Method) 1968-12-16
GB1126269A (en) 1968-09-05
DE1526485C3 (de) 1975-10-30

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