DD239830A1

DD239830A1 - FLOW-SPEED SPEED CONTROLLER WITH APPROVAL FOR FUEL INJECTION PUMPS

Info

Publication number: DD239830A1
Application number: DD27906185A
Authority: DD
Inventors: Juergen Kunze; Werner Hoffmann
Original assignee: Kraftfahrzeugzu Behoerwerke Dr
Priority date: 1985-07-29
Filing date: 1985-07-29
Publication date: 1986-10-08

Abstract

Die Erfindung bezieht sich auf Fliehkraftdrehzahlregler mit Angleichung fuer Kraftstoffeinspritzpumpen von Brennkraftmaschinen. Ziel der Erfindung ist die Schaffung einer oekonomisch guenstigen Loesung, wobei die Aufgabe darin besteht, Angleicheinrichtungen zu schaffen, die die Kraftstoffhoechstmenge bei steigender Drehzahl so veraendern koennen, dass ein erst ansteigender und dann abfallender Foerdermengenverlauf realisiert werden kann. Die Loesung besteht darin, dass eine regelstangenseitig gerundete Druckstange als Drehpunkt fuer den Umlenkhebel bei zunehmender Drehzahl und damit vorhandener Verkuerzung der Angleichfeder dient, nachdem die Startmenge abgeregelt ist. FigurThe invention relates to centrifugal speed governor with adjustment for fuel injection pumps of internal combustion engines. The aim of the invention is to provide an economically favorable solution, wherein the object is to provide Angleicheinrichtungen that can vary the Kraftstoffhoechstmenge with increasing speed so that a first increasing and then decreasing Foerdermengenverlauf can be realized. The solution is that a rule rod side rounded push rod serves as a fulcrum for the lever at increasing speed and thus existing shortening of the Angleichfeder after the starting amount is abgeregelt. figure

Description

Deflection lever 8 to the connection point 10 is located by the angle 11 and on the extension of the reversing lever 8 Setting means 12 limited, these components by a control rod 9 and control lever 6 located tension spring 13th

unter Spannung gehalten werden. Ferner befindet sich im Schlepphebel 14 eine Führung 15 für das schlepphebelseitige Endeder Druckstange 16, an der sich einstellbar die Umlenkfeder 17 abstützt. Das regelstangenseitige Ende der Druckstange 16 besitztgegenüber dem Umlenkhebel eine gehäusefeste Führung 18, wobei diese Führung 18 in Abhängigkeit von Meßgrößen (z. B.be kept under tension. Further, in the rocker arm 14 is a guide 15 for the drag lever side end of the push rod 16 to which the deflecting spring 17 is adjustably supported. The rule rod end of the push rod 16 has opposite the lever a housing-fixed guide 18, said guide 18 in response to measured variables (eg.

Pressure cell 19) is made adjustable. The tension spring 20 is the main control spring, which on the one hand via the adjusting lever 21 is biased from the outside and thereby

andererseits den Schlepphebel 14 an den Vollastanschlag 22 zieht.on the other hand pulls the drag lever 14 to the full load stopper 22.

The connection between the tension spring 20 and governor lever 6 is ensured via the drag lever 14 and in the regulator lever. 6

angeordnete Federkapsel 23, in der sich die vorspannbare Angleichfeder 24 und die für die Startmenge und diearranged spring capsule 23, in which the prestressable Angleichfeder 24 and the starting amount and the

Idle speed control used idle spring 25 are located. The invention makes it possible to realize a delivery rate, the first increasing with increasing speed and then

abnehmende Fördermenge bringt.decreasing flow rate brings.

This Fördenmengenverlauf is achieved in that after the start of the stroke of the idle spring 25 is used up

und die Federkapsel 23 gegen die Vorspannung der Angleichfeder 24 zusammengedrückt wird. Wegen der geringen Kraft derand the spring capsule 23 is compressed against the bias of the Angleichfeder 24. Because of the low power of

Tension spring 13, the lever 8 performs a pivoting movement about the rule rod end of the push rod 16 from until the

durch den Winkel 11 und die Einstellmittel 12 begrenzte Schwenkwinkel durchlaufen und das Angleichspiel Sä aufgebraucht ist.through the angle 11 and the adjustment 12 limited swing angle go through and the Angleichspiel Sä is used up.

It shifts the control rod 9 in the direction of increasing flow. Now pull rod 7 and lever 8 represent a rigid joint, the control rod is 9 at further speed increase

entgegen der Kraft der Umlenkfeder 17 und der Angleichfeder 24 in Richtung abnehmender Fördermenge verschoben, bis dasshifted against the force of the deflection spring 17 and the Angleichfeder 24 in the direction of decreasing flow rate until the

Angleichspiel Sa depleted in the spring capsule 23 and thus the after "Negativangleichung" "Posiviangleichung"

beendet ist. Daran schließt sich in bekannter Weise die Endregelung an.finished. This is followed in a known manner to the final control.

Claims

Claim for invention:

1. Centrifugal speed controller for fuel injection pumps of internal combustion engines with pivotable mounted on a centrifugal weight pendulum masses with at least one each traction arm, characterized in that a rule rod side rounded push rod serves as a fulcrum for the lever at increasing speed and thus existing shortening of the Angleichfeder after the starting amount is abgeregelt, wherein the push rod is resiliently supported on the rocker arm, that the preload Angleichfeder is arranged together with the used for the Startmengen- and idle speed control idle spring in a known spring sleeve on or in the two-sided regulator lever that in the rocker arm a guide for the towing lever end of the push rod available is, at which adjustable the deflecting spring is supported and that the rule rod side end of the push rod is fixed to the housing against the reversing lever.

Second centrifugal speed controller according to item 1, characterized in that the guide of the rule rod-side end of the push rod is displaceable by externally influenced adjustment means.

To this 1 page drawing / ⁱ

Field of application of the invention

The invention relates to a centrifugal speed governor for fuel injection pumps of internal combustion engines with a speed-dependent verstellendem under the force of pendulum weights with traction control element, the adjustment of the fuel injection amount is aimed at the maximum smoke-free combustible fuel quantity in the engine.

Characteristic of the known technical solutions

There are known centrifugal speed governor in which pendulum weights with pressure arms by means of complicated designed components in the transmission linkage between the controller elements and control rod adjustment of the fuel injection amount only in a limited speed range (positive approximation) realized (DD-PS 46578).

Object of the invention

The aim of the invention is to provide an economically favorable solution for centrifugal speed controller of the type described in which the adaptation of the fuel injection quantity to the maximum smoke-free combustible amount of fuel in the engine over deh entire full load range.

Explanation of the essence of the invention

- The invention has for its object to provide for centrifugal speed governor of the type described adjustment means for adjusting the fuel injection pumped by the fuel quantity to the full load of the engine, which unlike known solutions can change the maximum fuel quantity with increasing speed such that a first increasing and then decreasing flow rate can be realized.

- According to the invention the object is achieved in that a rule rod side rounded push rod serves as a fulcrum for the lever at increasing speed and thus existing shortening of the Angleichfeder after the starting amount is abgeregelt. The push rod is resiliently supported on the drag lever. The preload adjusting spring is arranged together with the idle spring used for the start quantity and idle speed control in a known spring box on or in the two-sided regulator lever. In this case, a guide for the drag lever side end of the push rod is provided in the rocker arm on which the deflection spring is adjustably supported, and the rule rod end is fixed to the housing relative to the reversing lever.

embodiment

In the figure, the kinematic action principle is shown. On the camshaft of a fuel injection pump 1, not shown, the governor element of a centrifugal speed governor, consisting of axle 2 and pendulum weights 3, fixed, the adjusting bolt 4, the adjusting movement on the control housing 5 mounted in the control lever 6 transmits. On the governor lever 6, a pull rod 7 is articulated, which is connected via the lever 8 with a serving for flow adjustment control rod 9 of the fuel injection pump 1. The swivel angle of the