DE3523095A1 - Mechanical speed governor with full load stop dependent on atmospheric pressure connected to the injection pump of an air-compressing injection internal combustion engine - Google Patents

Mechanical speed governor with full load stop dependent on atmospheric pressure connected to the injection pump of an air-compressing injection internal combustion engine

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Publication number
DE3523095A1
DE3523095A1 DE19853523095 DE3523095A DE3523095A1 DE 3523095 A1 DE3523095 A1 DE 3523095A1 DE 19853523095 DE19853523095 DE 19853523095 DE 3523095 A DE3523095 A DE 3523095A DE 3523095 A1 DE3523095 A1 DE 3523095A1
Authority
DE
Germany
Prior art keywords
full load
air
injection pump
atmospheric pressure
mechanical speed
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.)
Withdrawn
Application number
DE19853523095
Other languages
German (de)
Inventor
Wendelin Dipl.-Ing. 7053 Kernen Klügl
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
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 filed Critical Daimler Benz AG
Priority to DE19853523095 priority Critical patent/DE3523095A1/en
Publication of DE3523095A1 publication Critical patent/DE3523095A1/en
Withdrawn legal-status Critical Current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
    • 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
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
    • 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
    • F02D1/06—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 pressure of engine working fluid
    • F02D1/065—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 pressure of engine working fluid of intake of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/447—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means specially adapted to limit fuel delivery or to supply excess of fuel temporarily, e.g. for starting of the engine

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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)

Abstract

The invention relates to a mechanical speed governor with full load stop dependent on atmospheric pressure connected to the injection pump of an air-compressing injection internal combustion engine, which stop comprises a barometric cell and an adjusting part transmitting the variations in length of this cell, which part, as the air pressure falls, acts against the force of a spring on the governor linkage connected to the control rod of the injection pump so as to reduce the delivery rate. In order to achieve an improved full load control travel trigger behaviour an element is provided additionally counteracting the adjusting force of the barometric cell from a certain adjustment travel of the adjusting part.

Description

Daimler-Benz Aktiengesellschaft Daim 15 411/4Daimler-Benz Aktiengesellschaft Daim 15 411/4

Stuttgart-UntertürkheimStuttgart-Untertürkheim

26.06.198506/26/1985

An der Einspritzpumpe einer luftverdichtenden Einspritzbrennkraftmaschine angeschlossener mechanischer Drehzahlregler mit einem atmospharendruckabhängigen VollastanschlagConnected to the injection pump of an air-compressing injection internal combustion engine mechanical speed controller with an atmospheric pressure dependent full load stop

Die Erfindung bezieht sich auf einen an der Einspritzpumpe einer luftverdichtenden Einspritzbrennkraftmaschine angeschlossenen mechanischen Drehzahlregler mit einem atmospharendruckabhängigen Vollastanschlag nach dem Oberbegriff des Patentanspruchs 1.The invention relates to one on the injection pump of an air-compressing injection internal combustion engine connected mechanical speed controller with an atmospheric pressure dependent full load stop according to the preamble of claim 1.

Bekanntlich muß in Gegenden, wo Kraftfahrzeuge unter extrem großen Höhenunterschieden gefahren werden, die eingespritzte Kraftstoffmenge von einer gewissen Höhe an der schlechter werdenden Luftfüllung der Motorzylinder angepaßt werden. Der eingangs beschriebene und in Serienfahrzeugen verwendete atmosphärendruckabhängige Vollastanschlag erfüllt diese Aufgabe jedoch nicht zur vollsten Zufriedenheit. Der Erfindung liegt daher die Aufgabe zugrunde, durch einfache Maßnahmen an einem atmospharendruckabhängigen Vollastanschlag für einen mechanischen Drehzahlregler ein verbessertes Regelwegabzugsverhalten im Hinblick auf das Rauch- und Anfahrverhalten der Brennkraftmaschine zu erreichen.It is known that in areas where motor vehicles are driven under extremely large differences in altitude, the injected fuel amount of a certain amount due to the deteriorating air charge of the engine cylinders be adjusted. The one described at the beginning and used in series vehicles, which is dependent on the atmospheric pressure However, full load stop does not fulfill this task to the fullest satisfaction. The invention lies therefore the task is based on an atmospheric pressure dependent full load stop for simple measures a mechanical speed controller an improved control path deduction behavior to achieve with regard to the smoke and start-up behavior of the internal combustion engine.

-5--5-

Zur Lösung dieser Aufgabe dienen die im Kennzeichen des Anspruchs 1 angegebenen Merkmale.To solve this task are used in the identifier of the Claim 1 specified features.

In dem Unteranspruch ist noch eine vorteilhafte und förderliche Weiterbildung beansprucht.Another advantageous and beneficial development is claimed in the sub-claim.

Vom Barometerdruck auf Meereshöhe bis zu einem bestimmten Höhendruck arbeitet die Barometerdose des atmosphärendruckabhängigen Vollastanschlages lediglich gegen eine Federkraft.From the barometer pressure at sea level up to a certain altitude pressure, the barometer box works depending on the atmospheric pressure Full load stop only against a spring force.

Durch die erfindungsgemäße Ausführung wird dann ab diesem bestimmten Höhendruck der Federkraft bei weiterer Verstellung eine zusätzliche Kraft aufgeschaltet, durch die die Regelwegkennliniensteigung verändert wird, wodurch ein Einfluß auf ein verbessertes Anfahrverhalten sowie eine Herabsetzung oder gar Beseitigung der Rauchentwicklung genommen wird. Da Brennkraftmaschinen untereinander und auch solche unterschiedlicher Größe jeweils einen anderen Luftmengen- und Kraftstoff-Mengenbedarf haben, ist der Eingriffspunkt der zusätzlichen Feder einstellbar ausgeführt. Ein weiterer Vorteil ergibt sich noch dadurch, daß der bekannte atmosphärendruckabhängige Vollastanschlag ohne bauliche Veränderungen und ohne Änderung der Verbindung zwischen dem stangenförmigen Verstellteil und der Übertragungsstange mit wenigen baulichen Mitteln ergänzt werden kann, um die erwünschte Regelwegkennliniensteigung zu erreichen.Due to the design according to the invention, the spring force is then from this specific height pressure upon further adjustment an additional force is applied, by means of which the gradient of the control path characteristic is changed, whereby a Influence on an improved start-up behavior as well as a reduction or even elimination of smoke development is taken. Since internal combustion engines with each other and also those of different sizes each have a different one Have air volume and fuel volume requirements, the point of engagement of the additional spring is designed to be adjustable. Another advantage arises from the fact that the known atmospheric pressure-dependent full load stop without structural changes and without changing the connection between the rod-shaped adjustment part and the Transmission rod can be supplemented with a few structural means to achieve the desired gradient of the control path characteristic to reach.

Ein Ausführungsbeispiel ist nachfolgend anhand der Zeichnung näher beschrieben.
Es zeigen:An exemplary embodiment is described in more detail below with reference to the drawing.
Show it:

Fig. 1 in schematischer Darstellung den mit einem mechanischen Drehzahlregler zusammenwirkenden erfindungsgemäßen atmosphärendruckabhängigen Vollastanschlag undFig. 1 in a schematic representation of the interacting with a mechanical speed controller atmospheric pressure-dependent according to the invention Full load stop and

-6--6-

Daim 15 411/4Daim 15 411/4

Fig. 2 im Regelwegkennfeld die Vollastregelwegabzugskennlinie mit zwei Steigungen.Fig. 2 in the control path map, the full-load control path deduction characteristic with two slopes.

Ein in Fig. 1 gezeigter atmosphärendruckabhangiger lastanschlag 1 ist an einem mechanischen Drehzahlregler einer für luftverdichtende Einspritzbrennkraftmaschinen vorgesehenen Einspritzpumpe (nicht dargestellt) angebaut und besteht aus einer senkrecht in einem Gehäuse 3 eingesetzten einstellbaren Barometerdose 4 und einem auf der 10' Unterseite dieser Dose 4 befestigten stangenförmigen Verstellteil 5 mit einer Feder 6. Das Verstellteil 5 ragt in das Reglergehäuse 7 und ist dort an einer Übertragungsstange 8 als Teil des Reglergestänges angelenkt.An atmospheric pressure-dependent load stop 1 shown in FIG. 1 is attached to a mechanical speed controller an injection pump (not shown) provided for air-compressing injection internal combustion engines and consists of an adjustable barometer box 4 inserted vertically in a housing 3 and one on top of the Rod-shaped adjustment part 5 with a spring 6 attached to the underside of this can 4 protrudes into the controller housing 7 and is there articulated on a transmission rod 8 as part of the controller linkage.

Der in dem Reglergehäuse 7 liegende Abschnitt 5a des Verstellteiles 5 weist einen Anschlag 9 auf, der ab einem bestimmten Verstellweg des Verstellteiles 5 infolge derThe section 5a of the adjustment part located in the controller housing 7 5 has a stop 9, which from a certain adjustment path of the adjustment part 5 as a result of

bei abnehmendem Luftdruck auftretenden Längenänderungen \ changes in length occurring with decreasing air pressure \

der Barometerdose 4 mit einem durch eine Blattfeder ge- *the barometer box 4 with a leaf spring

bildeten Element 10 zusammenwirkt.formed element 10 cooperates.

Die Blattfeder 10 ist an einer Stelle 11 im Regler 2 gelagert, deren eines Ende mit einer von außen zugänglichen Einstellschraube 12 verbunden ist, durch die die Federkraft der Blattfeder 10 fahrzeugspezifisch angepaßt werden kann.The leaf spring 10 is mounted at a point 11 in the controller 2, one end of which is accessible from the outside Adjusting screw 12 is connected, by means of which the spring force of the leaf spring 10 is adapted to the specific vehicle can be.

Nimmt der Luftdruck bei zunehmender Höhe ab, vergrößert sich die Länge der Barometerdose 4 und das Verstellteil 5 wird entgegen der Kraft der Feder 6 in das ReglergehäuseIf the air pressure decreases with increasing altitude, the length of the barometer box 4 and the adjustment part 5 increase is against the force of the spring 6 in the controller housing

-7--7-

Daim 15 411/4Daim 15 411/4

geschoben. Ab einem bestimmten zurückgelegten Verstellweg des Verstellteiles 5 erfaßt der Anschlag 9 die Blattfeder 10. Bis zu diesem Zeitpunkt ergibt sich ein lineares Regelwegabzugsverhalten entsprechend der in Fig. 2 dargestellten Kennlinie "a", die die Regelwegverstellung (in mm angegeben) in Abhängigkeit vom Höhenluftdruck (in mbar angegeben) darstellt. Bei weiterer Verstellung wird ab diesem Zeitpunkt, der mit "A" bezeichnet ist, die Blattfeder 10 zusätzlich wirksam, an die der Anschlag 9 anschlägt. Es ergibt sich gegenüber der Kennlinie "a" eine weniger steil verlaufende Kennlinie "b". Der Vollastregelwegabzug dieser Kennlinie "b" beginnt gemäß Fig. 2 etwa bei 1,2 mm Vollastregelweg und etwa 850 mbar Höhendruck. pushed. From a certain adjustment path covered by the adjustment part 5, the stop 9 detects the leaf spring 10. Up to this point in time there is a linear control travel withdrawal behavior corresponding to that shown in FIG Characteristic curve "a", which shows the control path adjustment (specified in mm) as a function of the altitude air pressure (given in mbar). With further adjustment from this point in time, which is designated with "A", the Leaf spring 10 additionally effective against which the stop 9 strikes. Compared to the characteristic "a" there is a Less steep curve "b". The full-load control travel deduction of this characteristic curve "b" begins according to FIG. 2 around 1.2 mm full load control travel and around 850 mbar altitude pressure.

Der Vollastregelwegabzug des atmosphärendruckabhängigen Vollastanschlages 1 wird auf die Regelstange 11 übertragen, die in Richtung "LL" (Leerlauf zurückgenommen wird. Die Startstellung ist durch ST gekennzeichnet. Die Übertragung von dem stangenförmigen Verstellteil 5 erfolgt im einzelnen über die Übertragungsstange 8, eine schwenkbar gelagerte Kulisse 13 für den mit dem Verstellhebel 14 verbundenen Kniehebel 15 und Umlenkhebel 16, der seinerseits mit der auf der Nockenwelle 17 der Einspritzpumpe gelagerten Fliehgewichtseinrichtung 18 und dem zur Regelstange 11 führenden Regelhebel 19 verbunden ist.The full load control travel deduction of the atmospheric pressure dependent full load stop 1 is transferred to the control rod 11, which is withdrawn in the "LL" direction (idling. The start position is indicated by ST. The transmission from the rod-shaped adjustment part 5 takes place in detail via the transmission rod 8, a pivotably mounted link 13 for connected to the adjusting lever 14 toggle lever 15 and lever 16, which in turn with the on the Camshaft 17 of the injection pump mounted centrifugal weight device 18 and the control lever 19 leading to the control rod 11 is connected.

Claims (2)

Daimler-Benz Aktiengesellschaft Daim 15 411/4Daimler-Benz Aktiengesellschaft Daim 15 411/4 Stuttgart-Untertürkheim 2fi Qg 19R5Stuttgart-Untertürkheim 2fi Q g 19R5 PatentansprücheClaims 1J An der Einspritzpumpe einer luftverdichtenden Einspritzbrennkraftmaschine angeschlossener mechanischer Drehzahlregler mit einem atmosphärendruckabhängigen Vollastanschlag, der aus einer Barometerdose und einem die Längenänderungen dieser Dose übertragenden Verstellteil besteht, welches bei abnehmendem Luftdruck gegen die Kraft einer Feder auf das mit der Regelstange der Einspritzpumpe verbundene Reglergestänge im Sinne einer Verringerung der Fördermenge einwirkt,
dadurch gekennzeichnet, daß bei abnehmendem Luftdruck ab einem bestimmten Verstellweg des Verstellteiles (5) ein der Verstellkraft der Barometerdose (4) zusätzlich entgegenwirkendes Element (10) vorgesehen ist.1J A mechanical speed controller connected to the injection pump of an air-compressing injection engine with an atmospheric pressure-dependent full load stop, which consists of a barometer box and an adjustment part which transmits the changes in length of this box and which, when the air pressure decreases, acts against the force of a spring on the control linkage connected to the control rod of the injection pump in the sense of a Acts to reduce the delivery rate,
characterized in that, when the air pressure drops from a certain adjustment path of the adjustment part (5), an element (10) which additionally counteracts the adjustment force of the barometer box (4) is provided. 2. Mechanischer Drehzahlregler nach Anspruch 1 , dadurch gekennzeichnet, daß das an der Unterseite der Barometerdose (4) befestigte und die Feder (6) aufweisende Verstellteil (5), das an einer Übertragungsstange (8) als Teil des Drehzahlreglers (2) angelenkt ist, welche über eine schwenkbare Kulisse (12), einen Umlenkhebel (15) und einen Regelhebel (19)2. Mechanical speed controller according to claim 1, characterized in that that the on the underside of the barometer box (4) attached and the spring (6) having adjusting part (5), the a transmission rod (8) is articulated as part of the speed controller (2), which via a pivotable link (12), a reversing lever (15) and a control lever (19) -3--3- Daim 15 411/4Daim 15 411/4 mit der Regelstange (11) verbunden ist, mit einem Anschlag (9) versehen ist, an dem das durch eine einstellbare Blattfeder gebildete und in dem Regler (2) angeordnete Element (10) angreift.is connected to the control rod (11) with a stop (9) is provided on which the formed by an adjustable leaf spring and arranged in the controller (2) Element (10) attacks. -4--4-
DE19853523095 1985-06-28 1985-06-28 Mechanical speed governor with full load stop dependent on atmospheric pressure connected to the injection pump of an air-compressing injection internal combustion engine Withdrawn DE3523095A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853523095 DE3523095A1 (en) 1985-06-28 1985-06-28 Mechanical speed governor with full load stop dependent on atmospheric pressure connected to the injection pump of an air-compressing injection internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853523095 DE3523095A1 (en) 1985-06-28 1985-06-28 Mechanical speed governor with full load stop dependent on atmospheric pressure connected to the injection pump of an air-compressing injection internal combustion engine

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DE3523095A1 true DE3523095A1 (en) 1986-06-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622635A1 (en) * 1987-10-30 1989-05-05 Daimler Benz Ag MECHANICAL INJECTION PUMP REGULATOR FOR AIR INJECTION AND COMPRESSION ENGINES
EP0436053A1 (en) * 1990-01-04 1991-07-10 Mercedes-Benz Ag Mechanical governor for the injection pump of an air-compressing combustion engine, provided with a torque control dependent upon atmospheric and boost pressure
EP0436054A1 (en) * 1990-01-04 1991-07-10 Robert Bosch Gmbh Speed governor for the fuel injection pump of an internal combustion engine
FR2670828A1 (en) * 1990-12-22 1992-06-26 Daimler Benz Ag DEVICE FOR REGENERATING A SOOT BURNING FILTER IN THE EXHAUST DUCT OF AN INTERNAL COMBUSTION ENGINE.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2526148A1 (en) * 1975-06-12 1977-01-13 Bosch Gmbh Robert CONTROL DEVICE FOR THE FUEL SUPPLY OF INJECTION COMBUSTION ENGINES
DE3248461A1 (en) * 1982-12-29 1984-07-12 Robert Bosch Gmbh, 7000 Stuttgart Pressure-control valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2526148A1 (en) * 1975-06-12 1977-01-13 Bosch Gmbh Robert CONTROL DEVICE FOR THE FUEL SUPPLY OF INJECTION COMBUSTION ENGINES
DE3248461A1 (en) * 1982-12-29 1984-07-12 Robert Bosch Gmbh, 7000 Stuttgart Pressure-control valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622635A1 (en) * 1987-10-30 1989-05-05 Daimler Benz Ag MECHANICAL INJECTION PUMP REGULATOR FOR AIR INJECTION AND COMPRESSION ENGINES
DE3736781A1 (en) * 1987-10-30 1989-05-11 Daimler Benz Ag MECHANICAL INJECTION PUMP REGULATOR ON AN AIR COMPRESSING INJECTION COMBUSTION ENGINE
EP0436053A1 (en) * 1990-01-04 1991-07-10 Mercedes-Benz Ag Mechanical governor for the injection pump of an air-compressing combustion engine, provided with a torque control dependent upon atmospheric and boost pressure
EP0436054A1 (en) * 1990-01-04 1991-07-10 Robert Bosch Gmbh Speed governor for the fuel injection pump of an internal combustion engine
FR2670828A1 (en) * 1990-12-22 1992-06-26 Daimler Benz Ag DEVICE FOR REGENERATING A SOOT BURNING FILTER IN THE EXHAUST DUCT OF AN INTERNAL COMBUSTION ENGINE.

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