EP0095550A2 - Device to rise idling speed - Google Patents

Device to rise idling speed Download PDF

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Publication number
EP0095550A2
EP0095550A2 EP83100810A EP83100810A EP0095550A2 EP 0095550 A2 EP0095550 A2 EP 0095550A2 EP 83100810 A EP83100810 A EP 83100810A EP 83100810 A EP83100810 A EP 83100810A EP 0095550 A2 EP0095550 A2 EP 0095550A2
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EP
European Patent Office
Prior art keywords
arrangement according
starting
control
internal combustion
combustion engine
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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.)
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EP83100810A
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German (de)
French (fr)
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EP0095550A3 (en
Inventor
Wolfgang Sauerschell
Stephan Wietschorke
Gerhard Ruschek
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Mannesmann VDO AG
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Mannesmann VDO AG
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Publication of EP0095550A2 publication Critical patent/EP0095550A2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/025—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by means dependent on engine working temperature
    • 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 an arrangement for increasing the idle speed of an internal combustion engine, in particular a diesel engine, with an actuator for influencing the fuel supply, the displacement of which can be limited in the idling direction by an idling stop or after a starting operation by a starting quantity stop.
  • the adjustment path can be limited by a plurality of start quantity stops arranged one after the other in the idling direction, of which the starting quantity stop which is the most distant from the idle stop can be moved out of the adjustment path of the actuator one after the other at certain time intervals.
  • This configuration of the arrangement makes it possible to easily obtain an increased idling speed after a starting process, which is gradually reduced to normal operation in accordance with the average heating curve of the internal combustion engine.
  • the actuator can be the adjusting lever of the control rod of a fuel injection pump that controls the delivery volume, e.g. a diesel internal combustion engine.
  • the starting quantity stops are ramps of different radial extension of a swivel element which can be rotated step by step, and the idle stop can also be a ramp of the swivel element, only a few mechanical components and only one drive are required for this.
  • the swivel element can be rotated through 360 °, the position is automatically taken up again after the start operation has expired, from which a new start interval can begin again directly.
  • the swivel element is a disk arranged in the plane of movement of the adjusting lever.
  • One possibility of rotating the swivel element is an electric stepper motor.
  • crank mechanism has two levers which are arranged at an angle to one another and are connected to one another in an articulated manner and is connected in the region of the connected lever ends to the pivot element eccentrically to its axis of rotation, the free lever ends being drivable approximately linearly independently of one another, so can be done in a simple manner a rotary drive of the swivel element can be achieved in four stages with two linear drives.
  • the free lever ends are preferably movable toward one another or away from one another.
  • the free lever ends can be moved by an electromagnetic actuating element.
  • the electromagnetic actuating elements can be hinged armature relays, to the hinged armature of which a free lever end is articulated.
  • the unequal restoring forces of the two hinged anchors can ensure the clear course of the actuating element in a pivoting direction.
  • the crank drive can have a link pin in the area of the interconnected lever ends, which engages in a link guide of the swivel element.
  • the drive of the crank mechanism can be controlled by electronics that have a pulse generator that can be switched on by the starting process, the output of which is connected to a counting unit, via the first output of which a first electromagnetic control element maintaining its control position for a certain time and via the second output of which a second one Activation position a certain time maintaining electromagnetic actuator can be controlled.
  • This drive can be implemented using simple series components and therefore cheaply.
  • the first actuating element can preferably be actuated by the pulse counter immediately after the starting process and for this purpose with a time delay before the actuation time of the first actuating element expires, the actuation time of which extends beyond the actuation time of the first actuating element.
  • a temperature switch is arranged in the ground connection of the electromagnetic actuating elements, which is located above a certain operating temperature of the internal combustion engine in the open position, the normal idling speed is set directly when the internal combustion engine is already warm. This is e.g. Required if the internal combustion engine was only switched off briefly after a long period of driving and is therefore still at operating temperature when it is started again. An idle speed that is too high for this operating state is thus avoided.
  • the fuel injection pump has a pivotable adjustment lever 3.
  • This adjustment lever 3 has a stop cam 4 which can be brought into abutment on a pivot element 5 which is arranged in the same plane as the adjustment lever 3 and is designed as a disk.
  • This pivot element 5 limits the pivot path of the adjusting lever 3 in the idle direction.
  • the arrangement shown in Figure 2 has the same pivot element 5 as shown in Figure 1. It consists of a 360 0 rotatable disc, the uniformly distributed on its radially encircling peripheral four ramps 6, 6 ', 6'',6''' has a different radial extension. Uz are the ramps 6 - 6 ''clockwise from the ramp 6 with the greatest radial extension decreasing successively to the ramp 6''' with the smallest radial extension.
  • crank gear For driving the Schwenkel E ments 5, a crank gear is 7, which is' operable by two hinged armature relay 8 and 8.
  • the crank mechanism 7 consists of two levers 9 and 10 which are arranged at an angle to one another and are connected at an angle to one another. At the articulation point of the levers 9 and 10, a projecting link pin 11 of the crank mechanism 7 is fastened, which protrudes into a diagonal link guide 12 of the pivot element 5.
  • the free ends of the levers 9 and 10 of the crank mechanism 7 are connected in an articulated manner to one end of the hinged armature 13 and 13 'of the hinged armature relay 8 and 8'.
  • the other ends of the hinged armature 13 and 13 'designed as a two-armed lever are connected to one another via a tension spring 14, so that the hinged armature 13 and 13' are folded away from the relay when the relay is deenergized, as is the case with the hinged armature relay 8 shown on the left.
  • the right hinged armature relay 8 1 is shown in the energized hinged armature 13 'attracting position.
  • the link pin 11 is located at point 15, which corresponds to the normal position at the operating temperature of the internal combustion engine 1.
  • the link pin 11 moves from point 15 to point 16, after a certain time sequence to point 17, again after a certain period of time according to point 18 and finally back to point 15.
  • the link pin 11 projecting into the link guide 12 moves the pivot element 5 in four 90 ° sections by a total of 360 °.
  • FIG. 3 is assigned to the hinged armature relay 8 and FIG. 3a to the hinged armature relay 8 '.
  • the switching position of relays 8 and 8 ' is plotted over time in the diagrams.
  • both hinged anchors 13 and 13 are in the position folded down from relay 8 and 8 1, respectively. If a starting process is now started, 19 pulses are fed from a pulse generator to a counting unit 20 designed as a binary counter. This counting unit 20 immediately transmits a signal to the hinged armature relay 8, which switches to its switched-on switching position, as can be seen at time T1 in diagram 3. This position is maintained for a certain time since the hinged armature relays 8 and 8 'are each temporally persistent.
  • the temperature switch 21 located in the ground connection of the relays 8 and 8 ' is closed.
  • the counting unit 20 also begins to count in order to emit a signal to the folding armature relay 8 ′ at 2 5 pulses, which then switches to its energized switching position at time T2.
  • the stopping time of the hinged armature relay 8 ' has also expired, so that the hinged armature 13' also returns to its starting position and the idle position is thus reached at normal operating temperature.
  • the temperature switch 21 which switches depending on the temperature of the internal combustion engine 1 opens, as a result of which the hinged armature relays 8 and 8 1 are no longer supplied with current and the hinged armatures 13 and 13 'drop into their starting position.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

Die Erfindung betrifft eine Anordnung zur Anhebung der Leerlaufdrehzahl einer Brennkraftmaschine, insbesondere einer Dieselbrennkraftmaschine 1. Diese weist ein Stellglied (3) zur Beeinflussung der Kraftstoffzufuhr auf, dessen Verstellweg in Leerlaufrichtung durch einen Leerlaufanschlag (4) bzw. nach einem Startvorgang durch einen Startmengenanschlag begrenzbar ist. Damit eine derartige Anordnung einen einfachen Aufbau besitzt und billig herstellbar ist, ist der Verstellweg durch mehrere in Leerlaufrichtung hintereinander angeordnete Startmengenanschläge (5) begrenzbar, von denen beginnend mit dem Startvorgang in bestimmten Zeitabständen nacheinander jeweils der dem Leerlaufanschlag entfernteste Startmengenanschlag aus dem Verstellweg des Stellglieds herausbewegbar ist.

Figure imgaf001
The invention relates to an arrangement for increasing the idle speed of an internal combustion engine, in particular a diesel internal combustion engine 1. This has an actuator (3) for influencing the fuel supply, the adjustment path of which in the idling direction can be limited by an idling stop (4) or after a starting operation by a starting quantity stop . So that such an arrangement has a simple structure and is inexpensive to manufacture, the adjustment path can be limited by a plurality of start quantity stops (5) arranged one after the other in the idling direction, of which, starting with the starting process, the start quantity stop most distant from the idle stop can be moved out of the adjustment path of the actuator one after the other is.
Figure imgaf001

Description

Die Erfindung bezieht sich auf eine Anordnung zur Anhebung der Leerlaufdrehzahl einer Brennkraftmaschine, insbesondere einer Dieselkraftmaschine, mit einem Stellglied zur Beeinflussung der Kraftstoffzufuhr, dessen Verstellweg in Leerlaufrichtung durch einen Leerlaufanschlag bzw. nach einem Startvorgang durch einen Startmengenanschlag begrenzbar ist.The invention relates to an arrangement for increasing the idle speed of an internal combustion engine, in particular a diesel engine, with an actuator for influencing the fuel supply, the displacement of which can be limited in the idling direction by an idling stop or after a starting operation by a starting quantity stop.

Bei derartigen Anordnungen besteht das Problem, daß nach einem Start der kalten Brennkraftmaschine eine Erhöhung der Leerlaufdrehzahl so lange erfolgen muß, bis die Brennkraftmaschine warm gelaufen ist. Diese Erhöhung der Leerlaufdrehzahl wird bei bekannten Anordnungen durch eine elektronische Regelung erreicht.In such arrangements there is the problem that after the cold internal combustion engine has started, the idle speed must be increased until the internal combustion engine has warmed up. This increase in idle speed is achieved in known arrangements by electronic control.

Eine derartige elektronische Regelung ist aber aufwendig und sehr teuer.Such electronic control is complex and very expensive.

Es ist daher Aufgabe der Erfindung eine Anordnung nach dem Oberbegriff zu schaffen, die bei einfachem Aufbau billig herstellbar ist.It is therefore an object of the invention to provide an arrangement according to the preamble, which is inexpensive to manufacture with a simple structure.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Verstellweg durch mehrere in Leerlaufrichtung hintereinander angeordnete Startmengenanschläge begrenzbar ist, von denen beginnend mit dem Startvorgang in bestimmten Zeitabständen nacheinander jeweils der dem Leerlaufanschlag entfernteste Startmengenanschlag aus dem Verstellweg des Stellglieds herausbewegbar ist. Diese Ausbildung der Anordnung ermöglicht es, auf einfache Weise eine erhöhte Leerlaufdrehzahl nach einem Startvorgang zu erhalten, die entsrpechend dem durchschnittlichen Erwärmungsverlauf der Brennkraftmaschine stufenweise bis zum Normalbetrieb reduziert wird. Dabei kann das Stellglied der Verstellhebel der das Fördervolumen steuernden Regelstange einer Kraftstoffeinspritzpumpe, z.B.einerDiesel- brennkraftmaschine sein.This object is achieved in that the adjustment path can be limited by a plurality of start quantity stops arranged one after the other in the idling direction, of which the starting quantity stop which is the most distant from the idle stop can be moved out of the adjustment path of the actuator one after the other at certain time intervals. This configuration of the arrangement makes it possible to easily obtain an increased idling speed after a starting process, which is gradually reduced to normal operation in accordance with the average heating curve of the internal combustion engine. The actuator can be the adjusting lever of the control rod of a fuel injection pump that controls the delivery volume, e.g. a diesel internal combustion engine.

Sind die Startmengenanschläge Rampen unterschiedlicher radialer Erstreckung eines schrittweise drehbar antreibbaren Schwenkelements, wobei auch der Leerlaufanschlag eine Rampe des Schwenkelements sein kann, so sind nur wenige mechanische Bauteile und nur ein Antrieb dafür erforderlich.If the starting quantity stops are ramps of different radial extension of a swivel element which can be rotated step by step, and the idle stop can also be a ramp of the swivel element, only a few mechanical components and only one drive are required for this.

Ist das Schwenkelement um 360° drehbar, so wird nach einem Ablauf des Startbetriebs automatisch wieder die Position eingenommen, von der aus ein neues Startintervall direkt wieder beginnen kann.If the swivel element can be rotated through 360 °, the position is automatically taken up again after the start operation has expired, from which a new start interval can begin again directly.

Ein nur geringer Platzbedarf wird dann benötigt, wenn das Schwenkelement eine in der Bewegungsebene des Verstellhebels angeordnete Scheibe ist.Only a small amount of space is required if the swivel element is a disk arranged in the plane of movement of the adjusting lever.

Eine Möglichkeit des Drehantriebs des Schwenkelements besteht in einem elektrischen Schrittmotor.One possibility of rotating the swivel element is an electric stepper motor.

Ein wesentlich billigerer Drehantrieb wird durch einen Kurbeltrieb erreicht, da er einen billigeren Linearantrieb ermöglicht.A much cheaper rotary drive is achieved with a crank drive, since it enables a cheaper linear drive.

Besitzt der Kurbeltrieb zwei im Winkel zueinander angeordnete an ihrem einen Ende gelenkig miteinander verbundene Hebel und ist er im Bereich der verbundenen Hebelenden mit dem Schwenkelement exzentrisch zu dessen Drehachse verbunden, wobei die freien Hebelenden unabhängig voneinander etwa linear bewegbar antreibbar sind, so kann auf einfache Weise mit zwei Lineartrieben ein Drehantrieb des Schwenkelements in vier Stufen erreicht werden.If the crank mechanism has two levers which are arranged at an angle to one another and are connected to one another in an articulated manner and is connected in the region of the connected lever ends to the pivot element eccentrically to its axis of rotation, the free lever ends being drivable approximately linearly independently of one another, so can be done in a simple manner a rotary drive of the swivel element can be achieved in four stages with two linear drives.

Dabei sind vorzugsweise die freien Hebelenden aufeinanderzu hzw.voneinanderweg bewegbar.The free lever ends are preferably movable toward one another or away from one another.

Einfache billige Antriebe werden erreicht, wenn die freien Hebelenden durch ein elektromagnetisches Stellelement bewegbar sind. Dazu können die elektromagnetischen Stellelemente Klappankerrelais sein, an deren Klappankern jeweils ein freies Hebelende angelenkt ist.Simple, inexpensive drives are achieved if the free lever ends can be moved by an electromagnetic actuating element. For this purpose, the electromagnetic actuating elements can be hinged armature relays, to the hinged armature of which a free lever end is articulated.

Durch ungleiche Rückstellkräfte der beiden Klappanker kann der eindeutige Verlauf des Stellelements in eine Schwenkrichtung sichergestellt werden.The unequal restoring forces of the two hinged anchors can ensure the clear course of the actuating element in a pivoting direction.

Zur Übertragung der Kurbeltriebbewegung auf das Schwenkelement kann der Kurbeltrieb im Bereich der miteinanderverbundenen Hebelenden einen Kulissenzapfen besitzen, der in eine Kulissenführung des Schwenkelements eingreift.In order to transmit the crank drive movement to the swivel element, the crank drive can have a link pin in the area of the interconnected lever ends, which engages in a link guide of the swivel element.

Der Antrieb des Kurbeltriebs kann von einer Elektronik steuerbar sein, die einen durch den Startvorgang einschaltbaren Impulsgeber aufweist, dessen Ausgang mit einer Zähleinheit verbunden ist, über deren ersten Ausgang ein erstes seine Ansteuerposition eine bestimmte Zeit beibehaltendes elektromagnetisches Stellelement und über deren zweiten Ausgang ein zweites seine Ansteuerposition eine bestimmte Zeit beibehaltendes elektromagnetisches Stellelement ansteuerbar sein kann. Dieser Antrieb kann durch einfache Serienbauelemente und damit billig realisiert werden. Dabei ist vorzugsweise vom Impulszähler das erste Stellelement unmittelbar nach dem Startvorgang und dazu zeitversetzt vor Ablauf der Ansteuerzeit des ersten Stellelements das zweite Stellelement ansteuerbar, dessen Ansteuerzeit über die Ansteuerzeit des ersten Stellelements hinausreicht.The drive of the crank mechanism can be controlled by electronics that have a pulse generator that can be switched on by the starting process, the output of which is connected to a counting unit, via the first output of which a first electromagnetic control element maintaining its control position for a certain time and via the second output of which a second one Activation position a certain time maintaining electromagnetic actuator can be controlled. This drive can be implemented using simple series components and therefore cheaply. In this case, the first actuating element can preferably be actuated by the pulse counter immediately after the starting process and for this purpose with a time delay before the actuation time of the first actuating element expires, the actuation time of which extends beyond the actuation time of the first actuating element.

Ist im Masseanschluß der elektromagnetischen Stellelemente ein Temperaturschalter angeordnet, der sich oberhalb einer bestimmten Betriebstemperatur der Brennkraftmaschine in Öffnungsposition befindet, so wird bei bereits warmer Brennkraftmaschine direkt die normale Leerlaufdrehzahl eingestellt. Dies ist z.B. erforderlich, wenn die Brennkraftmaschine nach längerem Fahrbetrieb nur kurz ausgeschaltet wurde und somit bei einem erneuten Startvorgang noch auf Betriebstemperatur ist. Eine für diesen Betriebszustand zu hohe Leerlaufdrehzahl wird somit vermieden.If a temperature switch is arranged in the ground connection of the electromagnetic actuating elements, which is located above a certain operating temperature of the internal combustion engine in the open position, the normal idling speed is set directly when the internal combustion engine is already warm. This is e.g. Required if the internal combustion engine was only switched off briefly after a long period of driving and is therefore still at operating temperature when it is started again. An idle speed that is too high for this operating state is thus avoided.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen

  • Figur 1 eine Dieselbrennkraftmaschine mit einer erfindungsgemäßen Anordnung
  • in Figur 2 eine erfindungsgemäße Anordnung der Ansicht
  • Figur 3
  • und 3a ein Arbeitsablaufdiagramm der Anordnung nach Figur 2
  • Figur 4 eine elektrische Schaltung der Anordnung nach Figur 2
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it
  • 1 shows a diesel internal combustion engine with an arrangement according to the invention
  • in Figure 2 an arrangement of the view according to the invention
  • Figure 3
  • 3a shows a work flow diagram of the arrangement according to FIG. 2
  • FIG. 4 shows an electrical circuit of the arrangement according to FIG. 2

In Figur 1 ist eine Dieselbrennkraftmaschine 1 mit einer Kraftstoffeinspritzpumpe 2 dargestellt. Zur Verstellung des Fördervolumens besitzt die Kraftstoffeinspritzpumpe einen schwenbaren Verstellhebel 3. Dieser Verstellhebel 3 besitzt einen Anschlagnocken 4, der an einem in gleicher Ebene wie der Verstellhebel 3 angeordneten als Scheibe ausgebildeten Schwenkelement 5 in Anlage bringbar ist. Dieses Schwenkelement 5 begrenzt den Schwenkweg des Verstellhebels 3 in Leerlaufrichtung.1 shows a diesel internal combustion engine 1 with a fuel injection pump 2. To adjust the delivery volume, the fuel injection pump has a pivotable adjustment lever 3. This adjustment lever 3 has a stop cam 4 which can be brought into abutment on a pivot element 5 which is arranged in the same plane as the adjustment lever 3 and is designed as a disk. This pivot element 5 limits the pivot path of the adjusting lever 3 in the idle direction.

Die in Figur 2 dargestellte Anordnung besitzt das gleiche Schwenkelement 5 wie es in Figur 1 dargestellt ist. Es besteht aus einer um 3600 drehbaren Scheibe, die an ihrer radial umlaufenden Peripherie gleichmäßig verteilt vier Rampen 6, 6', 6'', 6''' unterschiedlicher radialer Erstreckung besitzt. U.z. sind die Rampen 6 - 6''' im Uhrzeigersinn von der Rampe 6 mit größter radialer Erstreckung sich nacheinander verkleinernd bis zur Rampe 6''' mit kleinster radialer Erstreckung ausgebildet.The arrangement shown in Figure 2 has the same pivot element 5 as shown in Figure 1. It consists of a 360 0 rotatable disc, the uniformly distributed on its radially encircling peripheral four ramps 6, 6 ', 6'',6''' has a different radial extension. Uz are the ramps 6 - 6 '''clockwise from the ramp 6 with the greatest radial extension decreasing successively to the ramp 6''' with the smallest radial extension.

Diese Rampe 6''' bildet gleichzeitig den Leerlaufanschlag bei Betrieb der Brennkraftmaschine 1 mit normaler Betriebstemperatur.This ramp 6 '' 'simultaneously forms the idle stop when the internal combustion engine 1 is operating at normal operating temperature.

Zum Antrieb des SchwenkelEments 5 dient ein Kurbeltrieb 7, der durch zwei Klappankerrelais 8 und 8' betätigbar ist. Der Kurbeltrieb 7 besteht aus zwei im Winkel zueinander angeordneten an ihrem einen Ende gelenkig miteinander verbundenen Hebeln 9 und 10. Im Anlenkpunkt der Hebel 9 und 10 ist ein hervorstehender Kulissenzapfen 11 des Kurbeltriebs 7 befestigt, der in eine diagonale Kulissenführung 12 des Schwenkelements 5 hineinragt.For driving the Schwenkel E ments 5, a crank gear is 7, which is' operable by two hinged armature relay 8 and 8. FIG. The crank mechanism 7 consists of two levers 9 and 10 which are arranged at an angle to one another and are connected at an angle to one another. At the articulation point of the levers 9 and 10, a projecting link pin 11 of the crank mechanism 7 is fastened, which protrudes into a diagonal link guide 12 of the pivot element 5.

Die freien Enden der Hebel 9 und 10 des Kurbeltriebs 7 sind gelenkig mit den einen Enden der Klappanker 13 und 13' der Klappankerrelais 8 und 8' verbunden. Die anderen Enden der als zweiarmige Hebel ausgebildeten Klappanker 13 und 13' sind über eine Zugfeder 14 miteinander verbunden, so daß die Klappanker 13 und 13' bei stromlosen Relais von den Relais weggeklappt sind, wie dies bei dem linken dargestellten Klappankerrelais 8 der Fall ist. Das rechte Klappankerrelais 81 ist in strombeaufschlagterden Klappanker 13' anziehender Stellung dargestellt.The free ends of the levers 9 and 10 of the crank mechanism 7 are connected in an articulated manner to one end of the hinged armature 13 and 13 'of the hinged armature relay 8 and 8'. The other ends of the hinged armature 13 and 13 'designed as a two-armed lever are connected to one another via a tension spring 14, so that the hinged armature 13 and 13' are folded away from the relay when the relay is deenergized, as is the case with the hinged armature relay 8 shown on the left. The right hinged armature relay 8 1 is shown in the energized hinged armature 13 'attracting position.

In völlig stromloser Stellung der Klappankerrelais 8 und 8' befindet sich der Kulissenzapfen 11 im Punkt 15, der der Normalstellung bei Betriebstemperatur der Brennkraftmaschine 1 entspricht.In the completely de-energized position of the hinged armature relays 8 and 8 ', the link pin 11 is located at point 15, which corresponds to the normal position at the operating temperature of the internal combustion engine 1.

Durch die dargestellte Anordnung der aneinander anliegenden Klappankerrelais 8 und 8' sowie dem flach darauf angeordneten Kurbeltrieb und dem ebenfalls darauf flach angeordneten Schwenkelement 5 ergibt sich eine äußerst gedrungene Bauweise geringer Baugröße, so daß ein möglicherweise auch nachträglicher Einbau im Kraftfahrzeug problemlos möglich ist.Due to the arrangement of the hinged armature relays 8 and 8 'shown next to one another, as well as the crank mechanism arranged flat thereon and the swivel element 5 also arranged flat thereon, an extremely compact construction results in a small size, so that a subsequent installation in the motor vehicle is also possible without problems.

Bei Beginn eines Startvorganges der kalten Brennkraftmaschine 1 bewegt sich der Kulissenzapfen 11 vom Punkt 15 zum Punkt 16, nach bestimmtem Zeitablauf nach Punkt 17, wieder nach bestimmten Zeitablauf nach Punkt 18 und schließlich wieder zu Punkt 15. Dabei bewegt der in die Kulissenführung 12 ragende Kulissenzapfen 11 das Schwenkelement 5 in vier 90°-Abschnitten insgesamt um 360°.At the start of a starting process of the cold internal combustion engine 1, the link pin 11 moves from point 15 to point 16, after a certain time sequence to point 17, again after a certain period of time according to point 18 and finally back to point 15. The link pin 11 projecting into the link guide 12 moves the pivot element 5 in four 90 ° sections by a total of 360 °.

Die Klappankerrelais 8 und 8' werden dazu von der in Figur 4 dargestellten Elektronik entsprechend dem in Figur 3 und 3a dargestellten Arbeitsablaufdiagramm angesteuert.The hinged armature relays 8 and 8 'are controlled by the electronics shown in Figure 4 according to the work flow diagram shown in Figures 3 and 3a.

Dabei ist Figur 3 dem Klappankerrelais 8 und Figur 3a dem Klappankerrelais 8' zugeordnet. Über der Zeit ist in den Diagrammen die Schaltposition der Relais 8 und 8' aufgetragen.3 is assigned to the hinged armature relay 8 and FIG. 3a to the hinged armature relay 8 '. The switching position of relays 8 and 8 'is plotted over time in the diagrams.

Vor einem Startvorgang'befinden sich beide Klappanker 13 und 13' in vom Relais 8 bzw. 81 abgeklappterStellung. Wird nun ein Startvorgang begonnen, so werden von einem Impulsgeber 19 Impulse einer als Binärzähler ausgebildeten Zähleinheit 20 zugeleitet. Diese Zähleinheit 20 gibt sofort ein Signal an das Klappankerrelais 8 weiter, das in seine angezogene Schaltstellung schaltet, wie zur Zeit T1 im Diagramm 3 zu sehen ist. Diese Position wird für eine bestimmte Zeit beibehalten, da die Klappankerrelais 8 und 8' jeweils zeitlich anhaltend sind.Before a starting process, both hinged anchors 13 and 13 are in the position folded down from relay 8 and 8 1, respectively. If a starting process is now started, 19 pulses are fed from a pulse generator to a counting unit 20 designed as a binary counter. This counting unit 20 immediately transmits a signal to the hinged armature relay 8, which switches to its switched-on switching position, as can be seen at time T1 in diagram 3. This position is maintained for a certain time since the hinged armature relays 8 and 8 'are each temporally persistent.

Bei kalter Brennkraftmaschine 1 ist der im Masseanschluß der Relais 8 und 8' befindliche Temperaturschalter 21 geschlossen.When the internal combustion engine 1 is cold, the temperature switch 21 located in the ground connection of the relays 8 and 8 'is closed.

Mit Beginn des Startvorgangs beginnt auch die Zähleinheit 20 aufzuzählen, um bei 25 Impulsen ein Signal an das Klappankerrelais 8' abzugeben, das dann bei der Zeit T2 in seine angezogene Schaltstellung schaltet.At the start of the starting process, the counting unit 20 also begins to count in order to emit a signal to the folding armature relay 8 ′ at 2 5 pulses, which then switches to its energized switching position at time T2.

Bei weiterem zeitlichem Ablauf wird bei der Zeit T3 das Ende der Anhaltezeit des Klappankerrelais 8 erreicht, so daß der Klappanker 13 wieder in seine Ausgangsstellung abfällt.With further timing, the end of the stopping time of the hinged armature relay 8 is reached at time T3, so that the hinged armature 13 drops back into its starting position.

Bei der Zeit T4 ist auch die Anhaltezeit des Klappankerrelais 8' abgelaufen, so daß auch der Klappanker 13' in seine Ausgangsstellung zurückkehrt und so die Leerlaufposition bei normaler Betriebstemperatur erreicht ist.At the time T4, the stopping time of the hinged armature relay 8 'has also expired, so that the hinged armature 13' also returns to its starting position and the idle position is thus reached at normal operating temperature.

Sollte die normale Betriebstemperatur vor Ablauf der beschriebenen Zeitfolge erreicht sein, so öffnet der abhängig von der Temperatur der Brennkraftmaschine 1 schaltende Temperaturschalter 21, wodurch die Klappankerrelais 8 und 81 nicht mehr stromdurchflossen sind und die Klappanker 13 und 13' in ihre Ausgangsposition abfallen.If the normal operating temperature is reached before the expiry of the time sequence described, the temperature switch 21 which switches depending on the temperature of the internal combustion engine 1 opens, as a result of which the hinged armature relays 8 and 8 1 are no longer supplied with current and the hinged armatures 13 and 13 'drop into their starting position.

Claims (17)

1. Anordnung zur Anhebung der Leerlaufdrehzahl einer Brennkraftmaschine, insbesondere einer Dieselbrennkraftmaschine, mit einem Stellglied zur Beeinflussung der Kraftstoffzufuhr, dessen Verstellweg in Leerlaufrichtung durch einen Leerlaufanschlag bzw. nach einem Startvorgang durch einen Startmengenanschlag begrenzbar ist, dadurch gekennzeichnet, daß der Verstellweg durch mehrere in Leerlaufrichtung hintereinander angeordnete Startmengenanschläge begrenzbar ist, von denen beginnend mit dem Startvorgang in bestimmten Zeitabständen nacheinander je-. weils der dem Leerlaufanschlag entfernteste Startmengenanschlag aus dem Verstellweg des Stellglieds herausbewegbar ist.1. Arrangement for increasing the idle speed of an internal combustion engine, in particular a diesel internal combustion engine, with an actuator for influencing the fuel supply, the displacement of which can be limited in the idling direction by an idling stop or after a starting operation by a starting quantity stop, characterized in that the adjustment path by several in the idling direction successively arranged starting quantity stops can be limited, of which one after the other starting at the starting process at certain time intervals. because the most distant starting quantity stop can be moved out of the adjustment path of the actuator. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Stellglied der Verstellhebel (3), der das Fördervolumen steuernden Regelstange einerKraftstoffeinspritzpumpe (2) ist.2. Arrangement according to claim 1, characterized in that the actuator is the adjusting lever (3) which is the control rod controlling the delivery volume of a fuel injection pump (2). 3. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Startmengenanschläge Rampen(6, 6', 6'', 6''') unterschiedlicher radialer Erstreckung eines schrittweise drehbar antreibbaren Schwenkelements (5) sind.3. Arrangement according to one of the preceding claims, characterized in that the starting quantity stops are ramps (6, 6 ', 6' ', 6' '') of different radial extension of a swivel element (5) which can be rotated in steps. 4. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß der Leerlaufanschlag eine Rampe (6''') des Schwenk elements (5) ist.4. Arrangement according to claim 3, characterized in that the idle stop is a ramp (6 '' ') of the swivel element (5). 5. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß das Schwenkelement (5) um 360° drehbar ist.5. Arrangement according to claim 3, characterized in that the pivot element (5) is rotatable through 360 °. 6. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß das Schwenkelement (5) eine in der Bewegungsebene des Verstellhebels (3) angeordnete Scheibe ist.6. Arrangement according to claim 3, characterized in that the pivot element (5) is a in the plane of movement of the adjusting lever (3) arranged disc. 7. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß der Drehantrieb des Schwenkelements ein elektrischer Schrittmotor ist.7. Arrangement according to claim 3, characterized in that the rotary drive of the pivot element is an electric stepper motor. 8. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß der Drehantrieb des Schwenkelements (5) ein Kurbeltrieb (7) ist.8. Arrangement according to claim 3, characterized in that the rotary drive of the pivot element (5) is a crank drive (7). 9. Anordnung nach Anspruch 8, dadurch gekennzeichnet, daß der Kurbeltrieb (7) zwei im Winkel zueinander angeordnete, an ihrem einen Ende gelenkig miteinander verbundene Hebel (9, 10) besitzt und im Bereich der verbundenen Hebelenden mit dem Schwenkelement (5) exzentrisch zu dessen Drehachse verbunden ist, wobei die freien Hebelenden unabhängig voneinander etwa linear bewegbar antreibbar sind.9. Arrangement according to claim 8, characterized in that the crank mechanism (7) has two angularly arranged, at one end articulated lever (9, 10) and in the area of the connected lever ends with the pivot element (5) eccentrically whose axis of rotation is connected, the free lever ends being driven approximately linearly independently of one another. 10. Anordnung nach Anspruch 9, dadurch gekennzeichnet, daß die freien Hebelenden aufeinanderzu bzw. voneinanderweg bewegbar sind.10. The arrangement according to claim 9, characterized in that the free lever ends are movable towards or away from each other. 11. Anordnung nach Anspruch 9, dadurch gekennzeichnet, daß die freien Hebelenden durch ein elektromagnetisches Stellelement bewegbar sind.11. The arrangement according to claim 9, characterized in that the free lever ends are movable by an electromagnetic actuator. 12. Anordnung nach Anspruch 11, dadurch gekennzeichnet, daß der Klappanker (13, 13') jeweils eines Klappankerrelais (8, 81) an einem freien Hebelende angelenkt ist.12. The arrangement according to claim 11, characterized in that the hinged armature (13, 13 ') each of a hinged armature relay (8, 8 1 ) is hinged to a free lever end. 13. Anordnung nach Anspruch 12, dadurch gekennzeichnet, daß die Rückstellkraft der beiden Klappanker (13, 13') ungleich ist.13. The arrangement according to claim 12, characterized in that the restoring force of the two folding anchors (13, 13 ') is not the same. 14. Anordnung nach Anspruch 9, dadurch gekennzeichnet, daß der Kurbeltrieb (7) im Bereich der miteinanderverbundenen Hebelenden einen Kulissenzapfen (11) besitzt, der in eine Kulissenführung (12) des Schwenkelements (5) eingreift.14. Arrangement according to claim 9, characterized in that the crank mechanism (7) in the region of the interconnected lever ends has a link pin (11) which engages in a link guide (12) of the pivot element (5). 15. Anordnung nach Anspruch 11, dadurch gekennzeichnet, daß der Antrieb des Kurbeltriebs (7) von einer Elektronik steuerbar ist, die einen durch den Startvorgang einschaltbaren Impulsgeber(19) aufweist, dessen Ausgang mit einer Zähleinheit (20) verbunden ist, über deren ersten Ausgang ein erstes seine Ansteuerposition eine bestimmte Zeit beibehaltendes elektromagnetisches Stellelement und über deren zweiten Ausgang ein zweites seiner Ansteuerposition eine bestimmte Zeit beibehaltendes elektromagnetisches Stellelement ansteuerbar ist.15. The arrangement according to claim 11, characterized in that the drive of the crank mechanism (7) can be controlled by electronics which have a pulse generator (19) which can be switched on by the starting process and whose output is connected to a counting unit (20), via the first one Output a first electromagnetic control element which maintains its control position for a specific time and via the second output of which a second electromagnetic control element which maintains its control position for a specific time can be controlled. 16. Anordnung nach Anspruch 15, dadurch gekennzeichnet, daß vom Impulszähler (19) das erste Stellelement unmittelbar nach dem Startvorgang und dazu zeitversetzt vor Ablauf der Ansteuerzeit des ersten Stellelements das zweite Stellelement ansteuerbar ist, dessen Ansteuerzeit über die Ansteuerzeit des ersten Stellelements hinausreicht.16. The arrangement according to claim 15, characterized in that the second control element can be controlled by the pulse counter (19) immediately after the starting process and after the start of the control time of the first control element, the control time of which extends beyond the control time of the first control element. 17. Anordnung nach Anspruch 15, dadurch gekennzeichnet, daß im Masseanschluß der elektromagnetischen Stellelemente ein Temperaturschalter (21) angeordnet ist, der sich oberhalb einer bestimmten Betriebstemperatur der Brennkraftmaschine (1) in Öffnungsposition befindet.17. The arrangement according to claim 15, characterized in that a temperature switch (21) is arranged in the ground connection of the electromagnetic actuating elements, which is above a certain operating temperature of the internal combustion engine (1) in the open position.
EP83100810A 1982-05-08 1983-01-28 Device to rise idling speed Withdrawn EP0095550A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3217351 1982-05-08
DE19823217351 DE3217351A1 (en) 1982-05-08 1982-05-08 ARRANGEMENT FOR INCREASING THE IDLE SPEED

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EP0095550A2 true EP0095550A2 (en) 1983-12-07
EP0095550A3 EP0095550A3 (en) 1984-02-08

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DE3542058C1 (en) * 1985-11-28 1987-02-05 Opel Adam Ag Device for increasing the idling speed of an internal combustion engine
US4922873A (en) * 1988-08-31 1990-05-08 Synchro-Start Electromechanical run/stop actuator for diesel engine
DE4036376A1 (en) * 1990-11-15 1992-05-21 Kloeckner Humboldt Deutz Ag Temp.-dependent starting control for fuel pump of diesel engine - has temp. switch to control coil excitation and operate injection pump
US5642711A (en) * 1996-02-15 1997-07-01 Automated Waste Equipment Co., Inc. Apparatus for automatically controlling operation of the throttle assembly of a motor vehicle engine system during operation of power take-off equipment

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US3797465A (en) * 1970-07-04 1974-03-19 Nippon Denso Co Fuel injection system for internal combustion engines
DE2148762A1 (en) * 1971-09-30 1973-04-05 Herbert Rimpl IDLE CONTROL FOR DIESEL ENGINES AFTER A COLD START
DE2935321A1 (en) * 1978-09-04 1980-03-13 Hitachi Ltd Diesel engine fuel injection pump delivery control - has electrically driven intermittent switch cams to select stop, normal or start position of pump
EP0009474A1 (en) * 1978-09-21 1980-04-02 Friedmann & Maier Aktiengesellschaft Device permitting to increase the fuel supply during the starting of Diesel engines
GB2033474A (en) * 1978-10-14 1980-05-21 Bosch Gmbh Robert Control of fuel injection pumps for internal combustion engines
EP0018351A1 (en) * 1979-03-21 1980-10-29 Friedmann & Maier Aktiengesellschaft Control circuit for regulating an injection pump for Diesel engines
GB2061382A (en) * 1979-10-20 1981-05-13 Bosch Gmbh Robert Internal combustion engine fuel injection pump regulating arrangement

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DE3217351C2 (en) 1990-06-28
US4450804A (en) 1984-05-29
EP0095550A3 (en) 1984-02-08
DE3217351A1 (en) 1983-11-10

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