EP0034209B1 - Bremsvorrichtung für einen Fahrzeugviertaktmotor - Google Patents

Bremsvorrichtung für einen Fahrzeugviertaktmotor Download PDF

Info

Publication number
EP0034209B1
EP0034209B1 EP80107544A EP80107544A EP0034209B1 EP 0034209 B1 EP0034209 B1 EP 0034209B1 EP 80107544 A EP80107544 A EP 80107544A EP 80107544 A EP80107544 A EP 80107544A EP 0034209 B1 EP0034209 B1 EP 0034209B1
Authority
EP
European Patent Office
Prior art keywords
pressure
regulating device
valve
shut
engine
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
EP80107544A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034209A1 (de
Inventor
Paul Dipl.-Ing. Tholen
Hugo Dipl.-Ing. Stock
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0034209A1 publication Critical patent/EP0034209A1/de
Application granted granted Critical
Publication of EP0034209B1 publication Critical patent/EP0034209B1/de
Expired legal-status Critical Current

Links

Images

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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to a braking device for a vehicle four-stroke engine, in particular a diesel internal combustion engine, with an engine brake actuator, which is connected to an abruptly lockable shut-off element in the exhaust line and a control element in a pressure line, with pressure cylinders on the exhaust valves, which are connected to the pressure line behind the control element and with compensating pistons connected to the valve stems, which pressurize in the pressure cylinders in the closing direction of the exhaust valves. are beatable, the shut-off element being opened and the control element being closed during driving operation.
  • a device in which a compensating piston in a pressure cylinder of valve diameter is connected to the outlet valve, which is acted upon by a counterpressure in the closing direction of the valve, and in which a connecting line from the exhaust line to the pressure cylinder is provided with a control device which controls it Line is released simultaneously with the closing of the shut-off element in the exhaust pipe (DE-B-1 133600).
  • This measure is intended to ensure that no exhaust gas flows into the pressure cylinder during engine load operation, so that no soot can be deposited there.
  • the control element In engine braking mode, the control element is opened and the compensating piston is pressurized.
  • the control device provides only two extreme positions due to the mechanical connection. The higher the exhaust gas back pressure, the faster the braking effect begins. It is not possible to lift off the exhaust valves, since in each case the compensating piston is acted upon at least by the pressure acting on the exhaust valve from above.
  • a generic internal combustion engine is known from FR-A-1 113 369.
  • the engine brake actuator described there is connected on the one hand to a shut-off element in the exhaust line and on the other hand to a flap which is arranged in a pressure medium line, which leads to pressure cylinders arranged on the exhaust valves.
  • These pressure cylinders are arranged such that the closing force of the exhaust valve can be increased.
  • Exhaust gas from the exhaust pipe can be used as pressure medium.
  • the two flaps are operated contrary to each other, i. H. If the exhaust brake flap in the exhaust pipe is open, the flap in the pressure pipe is closed and vice versa. Both flaps can be operated simultaneously according to their function. It is also possible to provide a check valve instead of the flap in the pressure line.
  • the invention has for its object to provide a braking device for a vehicle four-stroke engine, which makes a metered braking effect of the engine possible in particular in the usual actuation of the shut-off element in the exhaust pipe with two positions on the stops.
  • the invention offers a solution in that the motor brake actuator closes the shut-off device abruptly for braking and opens the travel-dependent control member to increase the brake line when the motor brake actuator is actuated further.
  • the type of actuation of the two controls is optional.
  • actuation with a sudden transition is particularly suitable, such as, for. B. a pneumatic cylinder or a spring-loaded pull magnet. If the engine brake actuator is in its first setting range, the shut-off element in the exhaust pipe, which is usually designed as a simple throttle valve, is closed suddenly.
  • control member in the pressure line according to the invention is increasingly ge in the second setting range opens, the force acting in the closing direction on the exhaust valves increases by the gas pressure acting on the compensating pistons in the pressure cylinders. Raising the exhaust valves due to the dynamic pressure requires increasingly higher opening values. The resulting dynamic pressure and thus the braking effect on the engine increases finely adjustable.
  • the actuation of the control element in the pressure line which can be a conventional pressure control valve, is carried out in the simplest form purely mechanically with a suitable transmission ratio, the control element in the spatial arrangement or in the structural design being able to be combined with the engine brake actuator.
  • the pressure cylinders are vented. This is preferably to be ensured by the design of the control member.
  • a ventilation line which preferably starts from the unbranched pressure line, is set up from the pressure cylinders to the crankcase. This is particularly necessary if the pressure line upstream of the control element is connected to the exhaust line upstream of the shut-off element. This makes it possible to avoid precipitation on the valve train from the exhaust gas.
  • the simplest possibility according to the invention is to apply the pressure for the pressure cylinder, the maximum pressure on the compensating piston always corresponding exactly to the dynamic pressure acting on the valve plate.
  • Another option for supplying the pressure system is to connect it to a compressed air generator, which is usually present anyway for the vehicle's service brake.
  • a compressed air generator which is usually present anyway for the vehicle's service brake.
  • the advantage here is that no exhaust gas residues get into the pressure cylinder, where the precipitation of exhaust gas components can lead to increased wear.
  • the control member is actuated by the engine brake actuator in accordance with the desired braking effect.
  • the control element is a pressure regulating valve in which the pressure drop is changed by the actuating path. If the pressure line is connected to a compressed air source that generates a pressure far above the dynamic pressure in the exhaust gas line and supplies the further consumers, then according to a further embodiment, a pressure reducing valve is used as a control element in the pressure line, in which a change in the admission pressure does not occur affects the output pressure for the pressure cylinder. This is necessary in order to eliminate the influence of a sudden drop in pressure when a different consumer is used on the compressed air generator.
  • Fi g. 1 and 2 each show an exhaust valve 1, the upper valve spring plate of which is designed as a compensating piston 2, which slides in a sealing manner in a pressure cylinder 3 connected to the cylinder head 4. Part of a pressure line 10 is connected to the inside of the pressure cylinder 3. A bore 6 serves to lubricate the valve guide 7.
  • a valve spring 8 is arranged outside of the pressure cylinder 3 and is supported on it, while in FIG. 1 the valve springs 8 and 9 stand inside and rest on a lower valve spring plate 5 .
  • Fig. 3 shows a four-cylinder internal combustion engine 16 with an exhaust pipe 18, in which a shut-off device 17 is arranged.
  • a pressure line 10, which leads to the pressure cylinders 3 at the outlet valves 1, is controlled by a control element 11.
  • the pressure line 10 can either be connected to the collecting container 13 of a compressed air source 12 or alternatively via a connecting line 19 to the exhaust line 18 in front of the shut-off device 17.
  • the control member 11 releases a connection from the pressure cylinders 3 to a ventilation line 14, which leads into the crankcase 1 of the internal combustion engine 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP80107544A 1980-02-14 1980-12-03 Bremsvorrichtung für einen Fahrzeugviertaktmotor Expired EP0034209B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3005456 1980-02-14
DE19803005456 DE3005456A1 (de) 1980-02-14 1980-02-14 Bremsvorrichtung fuer einen fahzeugviertaktmotor

Publications (2)

Publication Number Publication Date
EP0034209A1 EP0034209A1 (de) 1981-08-26
EP0034209B1 true EP0034209B1 (de) 1984-02-22

Family

ID=6094553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107544A Expired EP0034209B1 (de) 1980-02-14 1980-12-03 Bremsvorrichtung für einen Fahrzeugviertaktmotor

Country Status (3)

Country Link
US (1) US4363301A (enrdf_load_stackoverflow)
EP (1) EP0034209B1 (enrdf_load_stackoverflow)
DE (1) DE3005456A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428627A1 (de) * 1984-08-03 1986-02-13 Daimler-Benz Ag, 7000 Stuttgart Viertakt-brennkraftmaschine
JPH02181008A (ja) * 1988-12-28 1990-07-13 Isuzu Motors Ltd 電磁駆動バルブ
DE9215611U1 (de) * 1992-11-17 1993-01-21 Speed Products Motorcycle Equipment Handelsgesellschaft mbH, 4400 Münster Abgasanlage für Verbrennungsmotoren
US5647318A (en) * 1994-07-29 1997-07-15 Caterpillar Inc. Engine compression braking apparatus and method
US5540201A (en) * 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
US5526784A (en) * 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
SE506881C2 (sv) * 1997-03-14 1998-02-23 Scania Cv Ab Förfarande för styrning av en förbränningsmotor vid start och motor för genomförande av förfarandet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1113369A (fr) * 1954-10-06 1956-03-28 Berliet Automobiles Perfectionnements aux dispositifs de freinage par étranglement de l'échappement pour véhicules automobiles
DE1133600B (de) * 1953-12-31 1962-07-19 Differential Diesel Engines Es Fahrzeugbrennkraftmaschine mit Motorbremsung
DE1911351A1 (de) * 1968-03-07 1970-01-29 White Motor Corp Motorbremssystem fuer ein Kraftfahrzeug

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2342003A (en) * 1941-11-12 1944-02-15 Wright Aeronautical Corp Pressure operated valve gear
DE2143724A1 (de) 1971-09-01 1973-03-08 Bosch Gmbh Robert Steuerung von ein- und auslassventilen bei brennkraftmaschinen
SU485233A1 (ru) * 1974-04-02 1975-09-25 Московский Трижды Ордена Ленина И Ордена Красного Знамени Автомобильный Завод Им.И.А.Лихачева Клапанный механизм двигател внутреннего сгорани
US4220008A (en) * 1978-12-28 1980-09-02 Cummins Engine Company Exhaust brake modulating control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133600B (de) * 1953-12-31 1962-07-19 Differential Diesel Engines Es Fahrzeugbrennkraftmaschine mit Motorbremsung
FR1113369A (fr) * 1954-10-06 1956-03-28 Berliet Automobiles Perfectionnements aux dispositifs de freinage par étranglement de l'échappement pour véhicules automobiles
DE1911351A1 (de) * 1968-03-07 1970-01-29 White Motor Corp Motorbremssystem fuer ein Kraftfahrzeug

Also Published As

Publication number Publication date
DE3005456C2 (enrdf_load_stackoverflow) 1987-11-12
US4363301A (en) 1982-12-14
EP0034209A1 (de) 1981-08-26
DE3005456A1 (de) 1981-08-20

Similar Documents

Publication Publication Date Title
WO2012038283A2 (de) Steuerventil mit veränderbarem düsenquerschnitt für selbsttätige druckluftbremsen
EP0034209B1 (de) Bremsvorrichtung für einen Fahrzeugviertaktmotor
DE3624248C2 (enrdf_load_stackoverflow)
DE546796C (de) Regelventil, insbesondere fuer Druckmittelbremsen von Kraftfahrzeugen
DE2918506A1 (de) Fluidbetaetigte mehrstufige stellvorrichtung
EP0001136B2 (de) Indirekt wirkende Druckluftbremse
DE855270C (de) Druckluftbremse, insbesondere fuer Eisenbahnen
DE699590C (de) Durch Abschluss der Auspuffleitung bei gleichzeitiger wirkungsabhaengiger Steuerung der Betriebsstoff- und Luftzufuhr betaetigte Motorbremse fuer Kraftfahrzeuge
DE2410837A1 (de) Vorrichtung zur automatischen regelung der abgasrueckfuehrung bei dieselmotoren
DE2361242A1 (de) Verfahren zum betrieb einer dieselbrennkraftmaschine zur verringerung der schadstoffemission im teillastbereich und entsprechende brennkraftmaschine
DE686728C (de) Einrichtung zur Zufuhr von Frischluft zur Gemischleitung von Brennkraftmaschinen
AT135024B (enrdf_load_stackoverflow)
EP2619047A1 (de) Steuerventil für selbsttätige druckluftbremsen
DE1064771B (de) Druckregler
DE19940264B4 (de) Verfahren zum Bremsen eines Verbrennungsmotors eines Kraftfahrzeugs
DE4015828C1 (en) Speed governor for IC engine - has switch fitted to clutch trip rod coupled to injection pump regulating rod
DE3208151C2 (de) Druckübersetzer für pneumatische oder hydraulische Antriebe, insbesondere für Kraftfahrzeuge
DE3244927C2 (de) Aufgeladene Brennkraftmaschine
DE680201C (de) Druckmittelbremse fuer Kraftwagenzuege, bei der Auflaufstoesse oder Verzoegerungszerrungen zur Bremsung des Anhaengers ausgenutzt werden
DE448951C (de) Speicherbremse
DE350435C (de) Luftein- und -auslassvorrichtung fuer Zylinder von Zweikammerluftdruckbremsen
DE6602230U (de) Automatisch lastabhaengiger bremskraftregler
DE181398C (enrdf_load_stackoverflow)
EP0937624A2 (de) Anordnung mit einer Ventileinrichtung
DE3013056C2 (de) Drehzahlregler zum Abregeln der Enddrehzahl einer gemischverdichtenden Brennkraftmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR GB NL SE

17P Request for examination filed

Effective date: 19811024

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): FR GB NL SE

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19841102

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19841231

Year of fee payment: 5

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19871231

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19891203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19891204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900701

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19900831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 80107544.1

Effective date: 19900830