EP0175070B1 - Einrichtung zur Begrenzung des Staudruckes einer Auspuffmotorbremse - Google Patents

Einrichtung zur Begrenzung des Staudruckes einer Auspuffmotorbremse Download PDF

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Publication number
EP0175070B1
EP0175070B1 EP19850107939 EP85107939A EP0175070B1 EP 0175070 B1 EP0175070 B1 EP 0175070B1 EP 19850107939 EP19850107939 EP 19850107939 EP 85107939 A EP85107939 A EP 85107939A EP 0175070 B1 EP0175070 B1 EP 0175070B1
Authority
EP
European Patent Office
Prior art keywords
valve
exhaust pipe
valve body
closed position
throttle valve
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
EP19850107939
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0175070A1 (de
Inventor
Alfred Schmidt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT85107939T priority Critical patent/ATE31780T1/de
Publication of EP0175070A1 publication Critical patent/EP0175070A1/de
Application granted granted Critical
Publication of EP0175070B1 publication Critical patent/EP0175070B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • F02D9/06—Exhaust brakes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87523—Rotary valve
    • Y10T137/87531—Butterfly valve

Definitions

  • the invention relates to a device for limiting the dynamic pressure of an exhaust engine brake, in which a throttle valve is rotatable in an exhaust pipe from an open position to a closed position and is supported on both sides, and a recess is provided that passes through the throttle valve in the closed position and is a valve bore provided in the exhaust pipe. which is arranged on the end face of the throttle valve in the closed position and projects beyond the throttle valve end face on both sides by at least 1/5 of the diameter of the valve bore, and in which a valve body which is displaceable in the valve bore is urged into the closed position by means of a spring which is spaced from Exhaust pipe is arranged.
  • the cross section of the exhaust pipe and the throttle valve are substantially rectangular and the throttle valve is in the closed position in a plane perpendicular to the central axis of the exhaust pipe.
  • the valve bore is arranged so that the end face of the throttle valve is arranged in its closed position and in its open position in the valve bore or the valve body, the end face of the valve body being flat, adapted to the flatness of the inner surface of the exhaust pipe.
  • the point at which the throttle valve which is in the closed position and the valve body pressed forward by the spring cooperate with the bearing of the throttle valve.
  • the bearing is provided in the region of the valve body.
  • the cross-section of the exhaust pipe is round, the throttle valve is elliptical and the throttle valve is in a slightly inclined position in relation to a plane perpendicular to the central axis of the exhaust pipe.
  • the object of the invention is therefore to create a less complex device of the type mentioned, which takes into account the conditions of an engine brake and the properties desired by an engine brake only when a predetermined upper dynamic pressure limit is reached.
  • the device according to the invention solving this problem, is characterized in that the cross section of the exhaust pipe is round, the throttle valve is elliptical and the throttle valve is in a slightly inclined position relative to a plane perpendicular to the center line of the exhaust pipe, and the valve bore is arranged in this way is that the end face of the throttle valve is arranged only in its closed position in the valve bore or the valve body, the end face of the valve body being curved to match the curvature of the inner surface of the exhaust pipe.
  • the point at which the throttle valve in the closed position and the valve piston pressed forward by the spring cooperate is provided with an axial and circumferential distance from the pivot axis.
  • the valve bore and valve body are arranged apart from the pivot axis of the throttle valve and the end face of the valve body has a non-planar, curved shape adapted to the round exhaust pipe. The device thus operates quietly and regardless of the temperature of the exhaust pipe.
  • valve bore or the valve body projects beyond the throttle valve face on both sides by at least a quarter of the diameter.
  • An increase in the protrusion does not only result in an increase in the passage cross section. Since the pressure that opens the valve only acts on one protruding area of the valve body and the spring force should not be set too low because of the desired robustness, a considerable or increased size of the protruding area of the valve body is desirable.
  • the spring has an increasing spring characteristic within the specified stroke of the valve body.
  • the valve body does not open completely every time the specified upper dynamic pressure limit is exceeded, but continues to open as it is exceeded. Since the spring is associated with an increase in compression due to an increase in compression, the valve is only opened slightly when the upper dynamic pressure limit is slightly exceeded.
  • the compression spring is e.g. a gas pressure spring; as a rule, however, a mechanical spring is used for simplicity. Although all suitable mechanical springs can be used, a helical spring is generally used for simplicity.
  • valve bore and valve body are arranged at a distance from the lowest area of the exhaust pipe, preferably in the uppermost area. This reduces or prevents the ingress of condensed water into the valve.
  • a gas-tight cap is connected to the valve bore, in which a pressure disk supporting the spring is displaceably guided, and the space between the valve body in the closed position and the turntable is connected via a relief channel the exhaust pipe is connected behind the throttle valve in the closed position. Since there must be considerable play between the valve body and the valve bore, gas penetrates behind the valve body under pressure. This gas can then flow out when the valve body is in the closed position.
  • the end face of the valve body adapted to the curvature of the inner surface of the exhaust pipe, is curved like a groove and the valve body is secured against rotation about its own axis.
  • the valve body is designed and arranged such that it can rotate in the valve bore and the end face of the valve body is hollowed out in the shape of a spherical shell, the radius of the spherical shell is adapted to the inner radius of the exhaust pipe. The valve body is now allowed to rotate around its central axis and there are no anti-rotation sliding guides.
  • the throttle valve is pivoted; with rotatable bearings e.g. stops in the exhaust pipe provided for the closed position; the elliptical design of the rotatably mounted throttle valve is essential.
  • the throttle valve When closed, the throttle valve has air along its circumference or sufficient play with respect to the exhaust pipe.
  • the path of the valve body is limited at the front by a stop in order to prevent the valve body from penetrating into the interior of the exhaust pipe.
  • the path of the valve body is also limited towards the rear by a stop, since from a certain opening stroke the passage cross section of the valve bore between the two sides of the throttle valve no longer increases.
  • a piece of an exhaust pipe 1 with a circular cross section is provided, in which a throttle valve 2 is arranged so as to be pivotable about an axis 3, which is located in the middle at half the height of the inside diameter of the exhaust pipe.
  • the throttle valve 2 is elliptical in shape and, as can be seen in FIGS. 1, 2 and 4, is in a slightly inclined position when it is in the closed position.
  • the throttle valve 2 turns a circumferential end face 4 in the closed position of the inside of the exhaust pipe 1.
  • the throttle valve 2 is pivoted from the closed position shown in dashed lines in FIG. 4 into a horizontal open position and back via a crank mechanism 5 by means of a piston-cylinder device 6.
  • a valve housing 7 is provided, which extends to the wall of the exhaust pipe and covers it to the outside.
  • the valve housing 7 forms a valve bore 8, which is circular in cross section and tapers on the side facing the interior of the exhaust pipe 1, thus forming an inner stop 9.
  • the valve bore 8 receives a valve body 10, which widens in the direction from the inside to the outside and rests in the closed position on the stop 9 of the valve housing.
  • the valve body 10 has a spherical shell-shaped end face 11 facing the interior of the exhaust pipe and extends beyond the end face 4 of the throttle valve 2 on both sides with a considerable area, as seen in the axial direction of the exhaust pipe 1.
  • the valve body 10 carries an elongated stamp 12 on the back, which protrudes into a cap 13.
  • This cap 13 is attached to the valve housing 7 and secured there by means of a snap ring.
  • a front bent end strip of the cap forms a rear stop 14 for the valve body 10, which limits the back and forth movement of the valve body.
  • a thrust washer 15 is provided which is slidably guided in the cylindrical cap 13.
  • a relief duct 16 with a large cross section opens into the exhaust pipe 1, which opens into the valve bore 8 such that it is only partially closed by the valve body 10 when the valve body 10 is in the advanced position, i.e. that it is partially open and that, according to FIG. 2, it is at least partially open even when the valve body is completely pushed back, i.e. is only partially blocked by the valve body.
  • a helical spring 17 made of wire which is supported on the outside at the bottom of the cap.
  • the support is provided via an adjusting device 18, which need not be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Exhaust Silencers (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)
EP19850107939 1984-08-16 1985-06-26 Einrichtung zur Begrenzung des Staudruckes einer Auspuffmotorbremse Expired EP0175070B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107939T ATE31780T1 (de) 1984-08-16 1985-06-26 Einrichtung zur begrenzung des staudruckes einer auspuffmotorbremse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843430028 DE3430028A1 (de) 1984-08-16 1984-08-16 Einrichtung zur begrenzung des staudruckes einer auspuffmotorbremse
DE3430028 1984-08-16

Publications (2)

Publication Number Publication Date
EP0175070A1 EP0175070A1 (de) 1986-03-26
EP0175070B1 true EP0175070B1 (de) 1988-01-07

Family

ID=6243104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850107939 Expired EP0175070B1 (de) 1984-08-16 1985-06-26 Einrichtung zur Begrenzung des Staudruckes einer Auspuffmotorbremse

Country Status (6)

Country Link
US (1) US4682674A (OSRAM)
EP (1) EP0175070B1 (OSRAM)
JP (1) JPS6165031A (OSRAM)
AT (1) ATE31780T1 (OSRAM)
DE (1) DE3430028A1 (OSRAM)
ES (1) ES8603975A1 (OSRAM)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3533393A1 (de) * 1985-09-19 1987-03-26 Alfred Schmidt Staudruckbegrenzung mit sicherungsventil
DE3743569A1 (de) * 1987-12-22 1989-07-13 Alfred Schmidt Schiebeventil mit mengenregulierung
GB9014486D0 (en) * 1990-06-29 1990-08-22 Dewandre Co Ltd C Exhaust brake variable orifice
GB2254883A (en) * 1991-04-15 1992-10-21 Ford Motor Co I.c. engine exhaust system.
DE4116371A1 (de) * 1991-05-18 1992-11-19 Alfred Schmidt Ventilvorrichtung einer auspuffmotorbremse
DE4306607A1 (de) * 1993-03-03 1994-09-08 Bayerische Motoren Werke Ag Drosselklappe einer Brennkraftmaschine
US5435347A (en) * 1993-07-22 1995-07-25 Donaldson Company, Inc. Exhaust systems for motorized vehicles
JPH09144569A (ja) * 1995-11-28 1997-06-03 Jidosha Kiki Co Ltd 排気ブレーキ装置
US5675969A (en) * 1996-05-21 1997-10-14 Fuji Oozx Inc. Exhaust gas control device in an internal combustion engine
RU2119076C1 (ru) * 1996-07-11 1998-09-20 Военный автомобильный институт Устройство для дросселирования выхлопа двигателя внутреннего сгорания
US6179096B1 (en) 1997-11-12 2001-01-30 Diesel Engine Retarders, Inc. Exhaust brake variable bypass circuit
WO1999041495A1 (en) * 1998-02-17 1999-08-19 Diesel Engine Retarders, Inc. Exhaust restriction device
FR2777946B1 (fr) * 1998-04-22 2000-06-16 Fowa Dispositif ralentisseur monte dans le circuit d'echappement des gaz d'un vehicule equipe d'un moteur a combustion
RU2293863C2 (ru) * 2001-09-03 2007-02-20 Военный автомобильный институт Устройство для дросселирования впуска двигателя внутреннего сгорания
US6662554B2 (en) 2002-01-23 2003-12-16 Deere & Company Adjustable restriction muffler system for a combine
CA2453593C (en) * 2003-12-16 2013-05-28 Jenara Enterprises Ltd. Pressure relief exhaust brake
JP4130912B2 (ja) * 2003-12-24 2008-08-13 愛三工業株式会社 内燃機関の排気圧上昇装置
CN102094714B (zh) * 2004-11-22 2014-01-15 雅各布斯车辆系统公司 控制排气压力的设备和方法
TWM282036U (en) * 2005-07-27 2005-12-01 Ming-Hung Jeng Improved piston-type pressure relief valve for turbine exhaust
US7568503B2 (en) 2005-08-10 2009-08-04 Cameron International Corporation Compressor throttling valve assembly
NL2000683C2 (nl) * 2007-06-05 2008-12-08 Daf Trucks Nv Uitlaatrem voor een voertuig voorzien van een verbrandingsmotor.
DE102007033424A1 (de) 2007-07-18 2009-01-22 Man Nutzfahrzeuge Ag Selbstreinigendes Abgasnachbehandlungssystem
CN102220907B (zh) * 2010-04-19 2015-03-11 上海尤顺汽车部件有限公司 发动机联合制动控制方法
CN102852652B (zh) * 2012-09-18 2016-02-03 浙江亿日气动科技有限公司 有通气孔螺塞的限压泄气辅助制动阀装置
US9482346B2 (en) * 2013-09-13 2016-11-01 Clark Equipment Company System and method for controlling a compressor inlet valve
KR101500199B1 (ko) * 2013-11-20 2015-03-06 현대자동차주식회사 배기 브레이크
WO2016126906A1 (en) 2015-02-04 2016-08-11 Middleville Tool & Die Co. Passive exhaust valve assembly and forming method
WO2016179119A1 (en) * 2015-05-01 2016-11-10 Cobra Aero Llc Variable exhaust control system
EP3394410B1 (en) * 2015-12-24 2020-07-01 Middleville Tool&Die Co. Passive exhaust valve with floating stop
WO2017122063A1 (en) 2016-01-15 2017-07-20 Middleville Tool & Die Co. Passive exhaust valve assembly with overlapping slip joint and method of forming and installation
US10450815B2 (en) 2016-11-21 2019-10-22 Cameron International Corporation Flow restrictor system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT68360B (de) * 1912-05-15 1915-04-10 Hugo Junkers Verfahren und Vorrichtung zur Regelung bzw. Leistungserhöhung von Verbrennungskraftmaschinen.
US1799426A (en) * 1929-01-02 1931-04-07 John R Lang Fuel-inlet valve
FR849439A (fr) * 1938-02-05 1939-11-23 Saurer Adolph Dispositif de freinage pour véhicules à moteurs à combustion interne
US2947392A (en) * 1956-10-03 1960-08-02 Mack Trucks Control system for exhaust brake
CH428318A (de) * 1965-12-28 1967-01-15 Haller Richard Motorbremse für Fahrzeuge mit Verbrennungskraftmaschine
US4111166A (en) * 1977-02-07 1978-09-05 Caterpillar Tractor Co. Engine mounted exhaust brake
DE2946747A1 (de) * 1979-11-20 1981-05-27 Daimler-Benz Ag, 7000 Stuttgart Motorbremse fuer kraftfahrzeuge
GB2081378B (en) * 1980-08-05 1984-04-18 Isuzu Motors Ltd Diesel engine throttle valve control system

Also Published As

Publication number Publication date
ES545075A0 (es) 1986-01-16
US4682674A (en) 1987-07-28
EP0175070A1 (de) 1986-03-26
DE3430028C2 (OSRAM) 1987-12-17
JPH0463210B2 (OSRAM) 1992-10-09
DE3430028A1 (de) 1986-02-27
ES8603975A1 (es) 1986-01-16
JPS6165031A (ja) 1986-04-03
ATE31780T1 (de) 1988-01-15

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