JPS63198732A - Governor for injection pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application and Prior Art The invention relates to an injection pump for an internal combustion engine of the type defined in the preamble of claim 1.

A known governor of this type (Swiss patent no. 319357
In No. 1), the device for limiting the amount of fuel supply required during starting consists of a second counterstop on the link connecting the adjustment lever and the adjustment lever, the counterstop being in the direction of full load movement of the link. is positioned rearwardly with respect to the first counterstop. This second counterstop is such that, in the disengaged position of the stop lever, it abuts the stop L of the stop lever when the adjusting lever moves beyond the full load position, thereby adjusting in the direction of increasing the starting supply. It projects beyond the first counterstop in the direction of pivoting of the stop lever so that further movement of the lever is prevented.

For such devices that limit the starting supply.

The starting supply quantity cannot be changed and no retrofitting is possible to adapt it to different internal combustion engines; furthermore, the quantity at starting is limited to only a certain value, which is greater than the quantity at full load.

[Means to solve problems]

In contrast, the fuel banner of the present invention having the structure set forth in claim 1 can individually adjust the amount of fuel supplied at the time of starting, and can be adjusted to an arbitrary amount smaller than the amount supplied at full load. Add 1 to the advantage of being able to do it. The latter advantage is particularly significant if the engine is equipped with an engine whose maximum starting volume is lower than the full load volume and also lower than the intake volume.

〔Example〕

The invention will be explained in more detail in the following description on the basis of an exemplary embodiment shown in the drawings.

Schematically illustrated camshaft 1 of an injection pump 11 of an internal combustion engine
0 is fitted with a known governor 12, whose weight 13 is moved away from the camshaft 10 in a known manner against the force of an adjusting spring 14 under the action of centrifugal force. .

At this time, the adjustment movement of the weight 13 is controlled by the governor sleeve 16 used as an adjustment member via the angle lever 15.
transmitted to. The governor sleeve 16 is provided with a slide ring 26 , which is slidably guided in the axial direction on a guide bolt 17 screwed into the cane puffer 18 . A two-lever PL adjustment L/bar 19 transmits the axial adjustment movement of the governor sleeve 16 to an adjustment rod 20, which is connected to the injection pump 1.
Determine the amount of supply of 1.

When the adjustment lever 19 operates due to movement of the governor sleeve 16, it rotates by the rotation of a pin 21 fixed to the lever 22.

This lever 22 is connected to a shaft 23 supported by the casing 18.
and in cooperation with an operating lever 24, which is likewise engaged with a shaft 23 projecting through the casing 18, for arbitrarily moving the adjusting rod 20 and changing the feed rate as desired. It constitutes an adjustment member. In the idling position, the operating lever 24 contacts the idling stopper 25.

Adjusting lever 19, with its one lever end t, tightens bolt '16 of slide group ring 26 of governor sleeve 16.
a and is hinged with the other lever end to a connecting link 27. This connecting link is articulated with the adjusting rod 20 and converts a rocking movement of the adjusting lever 19 into a corresponding displacement movement of the adjusting rod 20. The connecting link 27 has a first counterstop 28 that cooperates with a first stop 29 of the stop lever 30 .

The stop lever 30 is articulated to a retaining bolt 31 held in the casing 18 . Holding bolt 3
1 can be screwed somewhat deeper into the interior of the casing 18 after loosening the fixing nut 32, thereby adjusting the first stop 29 of the stop lever 30 in the direction of displacement of the first counterstop 28. can. The shaft 23 is further provided with a two-lever control lever 33.
is engaged, and the control lever is connected at one end to the stop lever 30 via a pin 35 that engages in a slit 34 in the stop lever 30. At the other end of the control lever -33, at which the guide pin 36 is provided, a spring 37 is engaged, which tends to press the control lever 33 against the projection 38 of the casing 18. The guide pin 36 is disposed coaxially with the governor sleeve 16 and abuts against the end surface of the governor sleeve 16 under the action of a spring 37 in a particular position of the governor sleeve 16, such as in the illustrated resting state.

The first stop 29 of the stop lever 30 and the counter stop 28 of the connecting link 27 are arranged in a known manner.
It is used to limit the amount of fuel delivered when the injection valve is fully loaded. Furthermore, a further device 39 is provided to limit the amount of supply required during start-up. This restriction device 3
9 consists of a second stopper 40 of the stop lever 30 and a second counter of the adjustment lever 19.
The second counterstop 41 is in the form of a lower web 42 or stannow, and is screwed transversely to the longitudinal axis of the adjustment lever 19 and projects on both sides of the adjustment lever. It is configured as an adjustment screw 43. After loosening the fixing nut 44, when the adjusting screw is rotated, the counter stopper 41 is transverse to the adjusting lever 19 and parallel to the swinging movement of the adjusting lever.
movement becomes possible.

The operation of the governor is as follows.

In the drawing, a banner is shown when the rotational speed of the camshaft 10 is 00 o'clock. The heavy sleeve 13 of the governor 12 is in the inner (111) position, and the governor sleeve 16 presses its end face against the pin 36 of the control lever 33, so that the control lever 33 is moved against the force of the spring 37. It is spaced apart from the protrusion 38 of the casing 18. The stop lever 30 is thereby moved via the pin-slit connection 34, 35.
It is brought to the withdrawal position, and in the withdrawal position,
The first stopper 29 is the first counter stopper 2
The second stopper 40 moves away from the moving path of the second stopper 40.
is located within the movement path of the counter stopper 41.

As shown in FIG. 1, for starting the internal combustion engine, the actuating lever 24 has already been pivoted counterclockwise away from the idle stop 2500 position. Thereby, the second counter stop 41 of the adjusting lever 19 still contacts the second stop 42 of the stop lever 30, preventing further swinging of the adjusting lever 19 as well as the adjustment rod in the direction of increasing the fuel supply amount. The adjusting lever 19 pivots via the pin 21 until a further displacement movement of 20 is prevented. The amount of fuel supplied during startup is thereby limited. In this case, by appropriately adjusting the adjustment screw 43, the initial i41+f! L is the first stopper 29 and the first
The second counter stop 41 is set such that the total load is less than the total load determined by the counter stop 28.

After the internal combustion engine starts, the weight 13 increases as the rotation speed increases.
moves outward, and the governor sleeve 16 moves to the left in the drawing via the angle lever 15. Along with that,
The adjustment lever 19 swings clockwise, and the adjustment port two 20 moves in the "5top" direction. Under the action of the spring 37, the control lever 33 moves until it abuts against the projection 38 of the casing 18.
Turn clockwise. As a result, the stop lever 3
0 pivots clockwise via the pin-slit connection 34.35, the first stop 29 connects the connecting link 2
7 toward the movement path of the first counter stopper 28. At the same time, the second stopper 40 is removed from the movement path of the second counterstopper 41. In this position of the stop lever 30, the limiting device 39 which limits the starting supply is disabled and the first counter stop 28 and the first stop 2 which limit the full load supply are disabled.
The limiting device consisting of 9 is enabled. When the rotational speed of the camshaft 10 decreases again, the adjusting lever 19 can be swung counterclockwise until the first counterstop 28 of the connecting link 27 rests against the first stop 29 of the stop lever 30. . In this case, the swing path of the adjustment lever 19 is also wider than the swing path of the adjustment lever necessary for adjusting the amount of fuel supplied at the time of starting. The limiting device 39, which limits the starting supply, is ineffective in this position of the stop lever 30, so that the swinging of the adjusting lever 19 is not prevented until full load limiting has taken place.

[Brief explanation of the drawing]

The drawing is a schematic cross-sectional view of the governor of the present invention. 10...Camshaft, 11...Injection pump, 13...
Weight, 16...Governor sleeve, 19...Adjustment lever, 20...Adjustment rod V, 21...Pin, 23.
··shaft.

Claims (1)

[Claims] 1. An adjustment member that receives the force of a weight and is adjusted according to the rotational speed, and an adjustment member that transmits the movement of the adjustment member to an adjustment rod of the injection pump, and that is swingable in order to arbitrarily move the adjustment rod. It is supported by the pin of the adjustment member,
a two-armed adjustment lever having one end of the lever hinged to the adjustment member and the other end of the lever hinged to a link connected to the adjustment rod; and a full fuel load. a stop adjustable in the direction of movement of the regulating rod and arranged on the stop lever and cooperating with a counterstop of the link to limit the supply when the internal combustion engine is stopped; The stopper is disengaged from the movement path of the counter stopper in the operating position occupied by the adjustment member during idling, and is latched to the stop lever and oscillates around a fixed oscillation axis. In a governor for an injection pump of an internal combustion engine of the type, comprising a control lever which is movable and operable by said adjustment member, and a restriction device for restricting the starting supply required during starting, said restriction device (39) comprising: a second stopper (40) disposed on the stop lever (30); and a second counter stopper (41) disposed on the adjustment lever (19); 40) and the second counter stopper (4
1) The levers (30) related to each other are moved so that they can come into contact with each other by swinging the adjustment lever (19) when the stop lever (30) is in the disengaged position.
, 19), and the second stopper (40) and/or the second counterstopper (41) are movable in the direction of the swing path of the adjustment lever (19). A governor for an injection pump of an internal combustion engine, comprising: 2. The second stopper (40) is configured as a web (42) projecting from the stop lever (30), and the second counterstop (41) is arranged relative to the longitudinal axis of the adjustment lever (19). Adjustment screws (which can be screwed in freely) protruding from the adjustment lever in both lateral directions
43) The governor according to claim 1, characterized in that it is configured as: 43).