DE4125831A1 - IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure - Google Patents

IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure

Info

Publication number
DE4125831A1
DE4125831A1 DE4125831A DE4125831A DE4125831A1 DE 4125831 A1 DE4125831 A1 DE 4125831A1 DE 4125831 A DE4125831 A DE 4125831A DE 4125831 A DE4125831 A DE 4125831A DE 4125831 A1 DE4125831 A1 DE 4125831A1
Authority
DE
Germany
Prior art keywords
valve
engine brake
venting
valves
control
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
DE4125831A
Other languages
German (de)
Inventor
Klaus Dipl Ing Wunderlich
Erwin Schmidt
Wolfgang Dipl Ing Treutlein
Manfred Dipl Ing Meschenmoser
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz 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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Priority to DE4125831A priority Critical patent/DE4125831A1/en
Publication of DE4125831A1 publication Critical patent/DE4125831A1/en
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
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Each cylinder is fitted with inlet and outlet valves as well as a special venting valve (8). This is opened by a solenoid drive (11) and closed by a spring (13) around the valve stem (7). The valve is opened near TDC to exhaust trapped gasses in a controlled manner. The venting control is linked to the braking process. During braking the fuel injection is inhibited, the main exahust valves held closed and the venting valves operated in relation to the engine timing. The drive for the solenoids is derived from the ignition circuit, to determine the TDC points. ADVANTAGE - Replaces complex hydraulic control, simple timing control from ignition timing program.

Description

Die Erfindung betrifft eine Motorbremse für eine Brennkraftma­ schine gemäß dem Oberbegriff des Hauptanspruchs.The invention relates to an engine brake for an internal combustion engine machine according to the preamble of the main claim.

Aus der älteren Patentanmeldung P 40 38 334 ist eine gattungsgemäße Motorbremse bekannt, wobei die Drosselventile durch eine Hydraulikflüssigkeit, die von einem Verteiler über Einzelleitungen zu den Drosselventilen geführt wird, betätigt werden.From the earlier patent application P 40 38 334 is one Generic engine brake known, the throttle valves through a hydraulic fluid coming from a manifold Individual lines to the throttle valves is actuated will.

Der Erfindung liegt die Aufgabe zugrunde, eine Motorbremse derart zu verbessern, daß die Betätigungseinrichtungen für die Drosselventile einfach und kompaktgebaut und gleichzeitig leicht ansteuerbar sind.The invention has for its object a motor brake to improve such that the controls for the Throttle valves simple and compact and at the same time are easy to control.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des kenn­ zeichnenden Teiles des Hauptanspruches gelöst.The object is achieved by the features of the kenn drawing part of the main claim solved.

Bei der erfindungsgemaßen Motorbremse wird die Aufgabe durch die Verwendung von Elektromagneten zur Betätigung der Drossel­ ventile gelöst. Dadurch entfallen die Hydraulikleitungen und der Verteiler zur Steuerung der Drosselventile. Außerdem können durch eine geeignete Auswertelektronik beliebige Schließ- und Öffnungsvorgänge realisiert werden. In the engine brake according to the invention the task is accomplished the use of electromagnets to operate the throttle valves released. This eliminates the hydraulic lines and the distributor for controlling the throttle valves. You can also by suitable evaluation electronics any locking and Opening processes can be realized.  

Die Ausführung der Erfindung gemäß den Unteransprüchen bietet den Vorteil, daß keine zusätzlichen Vorrichtungen zur Erfassung der Öffnungszeiten der Drosselventile erforderlich sind.The execution of the invention according to the subclaims offers the advantage that no additional devices for detection the opening times of the throttle valves are required.

Im folgenden wird die Erfindung anhand eines in einer Prinzip­ zeichnung dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigt die Zeichnung einen teilweisen Schnitt durch einen Zylinderkopf einer nicht weiter dargestellten Brennkraftma­ schine.The invention is based on a principle Drawing illustrated embodiment explained in more detail. The drawing shows a partial section through one Cylinder head of an internal combustion engine, not shown seem.

Die nicht weiter dargestellte Brennkraftmaschine umfaßt einen Zylinderblock 1 mit einer Zylinderbohrung 2, die einen teil­ weise dargestellten Kolben 3 hin- und herbewegbar aufnimmt und oben durch einen Zylinderkopf 4 abgeschlossen ist. Im Kolben 3 befindet sich ein Brennraum 5. Im Zylinderkopf 4 ist neben den nicht dargestellten Gaswechselventilen ein Drosselventil 6 an­ geordnet. Dieses Drosselventil 6 besteht aus einem Ventilschaft 7 und einem Ventilteller 8, welcher im Zusammenspiel mit einem Ventilsitz 9 eine Verbindung zwischen einem Auslaßkanal 10 und dem Brennraum 5 öffnet oder verschließt. Das Drosselventil 6 wird über einen Elektromagneten 11, der über eine Steuerleitung 12 angesprochen wird, betätigt. Zusätzlich befindet sich am Ventilschaft 6 eine Rückstellfeder 13.The internal combustion engine, not shown, comprises a cylinder block 1 with a cylinder bore 2 , which receives a piston 3, shown partially, so that it can move back and forth and is closed at the top by a cylinder head 4 . A combustion chamber 5 is located in the piston 3 . In the cylinder head 4 , a throttle valve 6 is arranged in addition to the gas exchange valves, not shown. This throttle valve 6 consists of a valve stem 7 and a valve plate 8 which, in cooperation with a valve seat 9, opens or closes a connection between an outlet duct 10 and the combustion chamber 5 . The throttle valve 6 is actuated by an electromagnet 11 , which is addressed via a control line 12 . In addition, a return spring 13 is located on the valve stem 6 .

Das Drosselventil 6 wird während des Normalbetriebs der Brenn­ kraftmaschine durch die Rückstellfeder 13 in Schließstellung gehalten. Bei Motorbremsbetrieb kann zusätzlich zur Unterbre­ chung der Kraftstoffzufuhr und zum Schließen einer Drossel­ klappe in der Abgasleitung das Drosselventil 6 im Bereich des oberen Totpunktes am Ende des Kompressionstakt geöffnet werden, indem der Elektromagnet 11 über die Leitung 12 durch ein ent­ sprechendes Signal vom OT-Geber angesprochen wird. Dadurch kann die komprimierte Luft über das Drosselventil 6 in den Auslaß­ kanal 10 entweichen, wodurch die Expansionsarbeit verringert und somit die Bremsleistung des Motors verbessert wird. Durch die einfache elektrische Steuerung des Drosselventils 6 lassen sich natürlich über ein entsprechendes Steuergerät beliebige andere öffnungs- und Schließzeiten realisieren. Außerdem können zur Steuerung des Elektromagneten neben dem Signal vom OT-Geber auch beliebige andere Signale, zum Beispiel vom Zündzeitgeber oder der Schwungscheibenerkennung, verwendet werden.The throttle valve 6 is held by the return spring 13 in the closed position during normal operation of the internal combustion engine. In engine braking operation, in addition to the interruption of the fuel supply and the closing of a throttle valve in the exhaust line, the throttle valve 6 in the area of top dead center at the end of the compression stroke can be opened by the electromagnet 11 via line 12 by a corresponding signal from the TDC sensor is addressed. This allows the compressed air to escape through the throttle valve 6 into the outlet channel 10 , which reduces the work of expansion and thus improves the braking performance of the engine. Due to the simple electrical control of the throttle valve 6 , any other opening and closing times can of course be realized via a corresponding control device. In addition to the signal from the TDC transmitter, any other signals, for example from the ignition timer or the flywheel detection, can also be used to control the electromagnet.

Claims (4)

1. Motorbremse für eine Brennkraftmaschine mit je Zylinder mindestens einem Drosselventil, das im Bremsbetrieb der Brenn­ kraftmaschine zeitweise einen Arbeitszylinderraum mit einer Auslaßleitung verbindend geöffnet ist, dadurch gekennzeichnet, daß die Bewegung des Drosselventils (6) über einen Elektroma­ gneten (11) steuerbar ist.1. Engine brake for an internal combustion engine with at least one throttle valve per cylinder, which in the braking operation of the internal combustion engine is temporarily open connecting a working cylinder chamber with an outlet line, characterized in that the movement of the throttle valve ( 6 ) via an electroma valve ( 11 ) is controllable. 2. Motorbremse nach Anspruch 1, dadurch gekennzeichnet, daß der Elektromagnet (11) über ein Signal vom OT-Geber ange­ steuert wird.2. Motor brake according to claim 1, characterized in that the electromagnet ( 11 ) is controlled via a signal from the TDC sensor. 3. Motorbremse nach Anspruch 1, dadurch gekennzeichnet, daß der Elektromagnet (11) über ein Signal vom Zündzeitgeber angesteuert wird.3. Engine brake according to claim 1, characterized in that the electromagnet ( 11 ) is controlled via a signal from the ignition timer. 4. Motorbremse nach Anspruch 1, dadurch gekennzeichnet, daß der Elektromagnet (11) über ein Signal von der Schwung­ scheibenerkennung angesteuert wird.4. Motor brake according to claim 1, characterized in that the electromagnet ( 11 ) is controlled via a signal from the swing disc detection.
DE4125831A 1991-08-03 1991-08-03 IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure Ceased DE4125831A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4125831A DE4125831A1 (en) 1991-08-03 1991-08-03 IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4125831A DE4125831A1 (en) 1991-08-03 1991-08-03 IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure

Publications (1)

Publication Number Publication Date
DE4125831A1 true DE4125831A1 (en) 1992-10-15

Family

ID=6437684

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4125831A Ceased DE4125831A1 (en) 1991-08-03 1991-08-03 IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure

Country Status (1)

Country Link
DE (1) DE4125831A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309860C1 (en) * 1993-03-26 1994-06-09 Daimler Benz Ag Device for control of compressed air in cylinder of IC engine - involves control valve with switch valve down stream from which air is controllable in conduit connected to accumulator or exhaust gas conduit
DE19634108C1 (en) * 1996-08-23 1997-08-21 Daimler Benz Ag Internal combustion engine with at least one throttle valve per cylinder
DE19634107C1 (en) * 1996-08-23 1997-08-21 Daimler Benz Ag Turbocharged internal combustion engine
EP0791729A1 (en) * 1995-08-11 1997-08-27 IVECO FIAT S.p.A. Heat engine for a vehicle with related control method
EP0822321A1 (en) * 1996-04-16 1998-02-04 Daimler-Benz Aktiengesellschaft Method for slowing down a 4 stroke internal combustion engine, in particular, when used for vehicle propulsion
WO2006074497A2 (en) * 2005-01-17 2006-07-20 Avl List Gmbh Method for operating an internal combustion engine
WO2012038191A1 (en) 2010-09-23 2012-03-29 Avl List Gmbh Four-stroke internal combustion engine with engine brake
WO2012038195A1 (en) 2010-09-23 2012-03-29 Avl List Gmbh Four-stroke internal combustion engine comprising an engine brake
WO2012038190A1 (en) 2010-09-23 2012-03-29 Avl List Gmbh Four-stroke internal combustion engine comprising an engine brake
US10669900B2 (en) 2016-07-20 2020-06-02 Avl List Gmbh Internal combustion engine having a valve actuation device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP Abstr. 57-76215 *
JP Abstr. 59-39943 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703103A1 (en) * 1993-03-26 1994-09-30 Daimler Benz Ag Device for controlling compressed air in a cylinder of an internal combustion engine
US5404852A (en) * 1993-03-26 1995-04-11 Mercedes-Benz Ag Arrangement for controlling air compressed in a diesel engine
DE4309860C1 (en) * 1993-03-26 1994-06-09 Daimler Benz Ag Device for control of compressed air in cylinder of IC engine - involves control valve with switch valve down stream from which air is controllable in conduit connected to accumulator or exhaust gas conduit
EP0791729A1 (en) * 1995-08-11 1997-08-27 IVECO FIAT S.p.A. Heat engine for a vehicle with related control method
EP0822321A1 (en) * 1996-04-16 1998-02-04 Daimler-Benz Aktiengesellschaft Method for slowing down a 4 stroke internal combustion engine, in particular, when used for vehicle propulsion
DE19634108C1 (en) * 1996-08-23 1997-08-21 Daimler Benz Ag Internal combustion engine with at least one throttle valve per cylinder
DE19634107C1 (en) * 1996-08-23 1997-08-21 Daimler Benz Ag Turbocharged internal combustion engine
WO2006074497A2 (en) * 2005-01-17 2006-07-20 Avl List Gmbh Method for operating an internal combustion engine
WO2006074497A3 (en) * 2005-01-17 2006-09-28 Avl List Gmbh Method for operating an internal combustion engine
WO2012038191A1 (en) 2010-09-23 2012-03-29 Avl List Gmbh Four-stroke internal combustion engine with engine brake
WO2012038195A1 (en) 2010-09-23 2012-03-29 Avl List Gmbh Four-stroke internal combustion engine comprising an engine brake
WO2012038190A1 (en) 2010-09-23 2012-03-29 Avl List Gmbh Four-stroke internal combustion engine comprising an engine brake
US10669900B2 (en) 2016-07-20 2020-06-02 Avl List Gmbh Internal combustion engine having a valve actuation device

Similar Documents

Publication Publication Date Title
DE4309860C1 (en) Device for control of compressed air in cylinder of IC engine - involves control valve with switch valve down stream from which air is controllable in conduit connected to accumulator or exhaust gas conduit
DE4433258C1 (en) Engine brake for a diesel engine
DE3922884C2 (en)
DE2847527C2 (en)
DE19526848A1 (en) Throttle-free control for IC engine
DE4423657C2 (en) Actuating device for an engine brake valve of an internal combustion engine
DE19736647B4 (en) Electromagnetically actuated valve drive system
DE19733186A1 (en) Gas exchange valve apparatus for piston engine
DE19733142A1 (en) Movement initiation method for gas exchange valve in piston engine cylinder
DE3428627A1 (en) FOUR-STOCK COMBUSTION ENGINE
DE19951315A1 (en) Method for operating a piston internal combustion engine in the event of a temporary failure of an electromagnetic valve train
DE19733137A1 (en) Excitation control method for valve on piston engine
DE19610468A1 (en) Control of diesel engine under low load conditions - by electromagnetically regulating opening of cylinder inlet valves
DE4125831A1 (en) IC engine brake - has cylinder venting valve and solenoid driven valve with spring closure
DE68917861T2 (en) Valve control device for internal combustion engines.
DE3524024A1 (en) METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE
DE10013536A1 (en) Valve control for engines with reciprocating pistons
DE19531435B4 (en) Method for adapting the control of an electromagnetic actuator to operational changes
DE60315923T2 (en) An internal combustion engine with two intake valves for each cylinder and an electronic control system for different and changing operation of the two intake valves
WO1996005415A1 (en) Engine brake device for a commercial vehicle
DE10359935B4 (en) Engine valve actuation system
DE2423516A1 (en) Setting component for regulating devices - has electro-magnetic valve providing connections to housing, atmosphere and hydraulic supply
DE19733140A1 (en) Operating method for electromagnetic actuator on piston engine
DE10141431A1 (en) Piston engine with pressure relief gas outlet valves
DE29804549U1 (en) Electromagnetically actuated gas exchange valve for a piston internal combustion engine with pneumatic return springs

Legal Events

Date Code Title Description
OAV Publication of unexamined application with consent of applicant
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection