JPS5940645Y2 - Engine centrifugal weight governor - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a centrifugal weight type governor in an engine.

In this type of governor, the weight and the slider pushed out by the weight may become disengaged, making it impossible to control the engine speed or causing overrunning.

This occurs when the load is suddenly removed from a high-load operating state (sudden increase in governor force), or when the accelerator is suddenly operated from a high-speed state to a low-speed position (sudden decrease in the set tension of the governor spring). arise.

That is, when the balance between the governor force F and the tension P of the governor spring suddenly changes from the state F=P to the state F>>p, the weight suddenly expands and swings, causing the slider to move out of the swinging trajectory of the pusher. This is because the bond between the two becomes loose due to extrusion.

Immediately after this connection is released, the slider leaves the weight behind due to the tension of the governor spring and is pushed to the high speed position, so the weight no longer acts on the slider.
The governor stops working at all.

As a result, too much fuel is supplied, causing the engine to overrun and seize.

In order to prevent the above-mentioned failure of the governor, the following measures have conventionally been taken.

■ A slider is provided with a bottle passing through it, and the bottle is received by a weight holder that supports the weight.

■ Form a step on the slider and secure the step with a washer.

■ The governor lever that transmits the advance movement of the slider to the fuel supply device is received by a boss protruding from the engine fixing wall.

In the above-mentioned O sword, ■, the bottle, washer, set bolt for the washer, etc. are required in addition to the governor parts, and furthermore, the slider needs to be machined with a bottle insertion hole, a stepped part, etc., which increases the overall manufacturing cost. There are drawbacks.

On the other hand, in the case of the front W, since it is necessary to form a boss and process the receiving end face thereof, there is an increase in cost as in (2) above.

Moreover, since the advance of the slider is inhibited via the governor lever, there is a drawback that the maximum amount of advance of the slider tends to vary.

In order to solve the above conventional drawbacks, this invention forms a part of the stopper on the side surface of the weight on the slider side opposite to the push part, and positions the flange of the slider between the push part and the part of the stopper. The slider is characterized in that excessive movement of the slider in the advancing direction is prevented by the collar of the slider coming into contact with a part of the stopper of the weight.

Examples of this invention will be described below based on the drawings.

FIG. 1 is a partially cutaway view showing an accelerator device for a horizontal diesel engine including a centrifugal weight type governor.

In the figure, an accelerator device 1 is composed of an accelerator lever 2, a governor lever 4 connected to the lever 2 via a governor spring 3, and a governor device 5.

The governor device 5 includes a weight holder I fixed to the crank gear 6, three weights 8 pivotally attached to the holder 7, and a crank shaft 9 supporting the crank gear 6. It is composed of a slider 10 that is inserted and fitted so as to be able to swing forward and backward.

The slider 10 has a flange 11 on the neck protruding from the end surface of the crank gear 6, which receives the swing of the weight 8.
Its tip is brought into contact with the governor lever ~4.

Reference numeral 12 designates a push part protruding from the swinging base end of the weight 8, and 13 a part of a stopper formed to face the push part 12 of the bar.

The slider 10 is assembled with its flange 11 being sandwiched between the pusher 12 and the stopper part 13, and the flange 11
The push portion 12 is brought into contact with the.

In the figure, numeral 14 is a fuel injection pump, 15Vi control rack, and 16 is a gear case that covers one side of the crack case.

The action will be explained below.

For example, when an engine is being operated under high load, if the load is suddenly removed, the engine speed will increase rapidly.

As a result, the weight 8 swings outward as shown in FIG. 2, breaks the balance with the governor spring 3, and pushes out the slider 10 through the collar 11 with its pushing portion 12.

At this time, the weight 8 tends to swing open more and more rapidly as the engine speed increases and changes more steeply.

However, slider 1 that sufficiently suppresses the engine speed
When the advance movement of 0 is performed, this slider 10 is stopped by the weight 8.

That is, when the weight 8 swings by a certain amount, the stopper portion 13 comes into contact with the flange 11 of the slider 10.

As a result, the collar portion 11 is held between the push portion 12 and the stopper portion 13, and further swinging of the weight 8 is prevented.

At the same time, the slider 10 is locked by the pusher 12 and the stopper portion 13, and further advancement is restricted.

According to the above, engine troubles such as overrunning caused by excessively expanding swinging of the weight 8 can be eliminated.

Furthermore, in the above configuration, since excessive advance of the slider 10 is simultaneously restricted, the transition time from the disturbed state to steady rotation is shortened.

As explained above, in this invention, in a centrifugal weight type governor, a part of the stopper is formed at a position facing the pushing part of the weight, and the collar part of the slider is positioned between the pushing part and part of the stopper. , the structure is such that a part of the stopper and the slider flange are in contact with each other to prevent the slider from advancing excessively.
Excessive expansion and swinging of the weights is reliably prevented, and engine rotational speed uncontrollability and overrunning conditions are eliminated.

Further, since a part of the stopper is formed integrally with the way K in advance, there is no need to separately provide separate members such as a bottle or washer as in the conventional example described above, and the manufacturing cost is reduced accordingly.

In addition, the manufacturing cost of the valve is reduced because machining and the like for the above-mentioned separate members are omitted.

Furthermore, since a part of the stopper is formed on the weight so as to face the push part, the interval can be set with high precision.
The maximum amount of weight expansion (the maximum amount of slider advancement) can be set with high accuracy without variation.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway view of an accelerator device in a horizontal diesel engine showing an actual case of this invention, and FIG. 2 is an enlarged view of the main part of FIG. 1 showing the operating state. 3...Governor spring, 5...Governor, 6...Rotating body (crank gear), T-...
... Weight holder, 8 ... Weight, 10
...-...Slider, 11...Brim section, 12...
...Press part, 13...--Part of stopper, 7.1
0,11...Receiving part.

Claims (1)

[Scope of utility model registration request] A slider 10 is supported by the rotating body 6 of the engine so as to be slidable forwards and backwards, and this slider 10 is configured to be able to be pushed out by a weight 8, and this weight 8 is pivotally supported on the rotating body 6 so as to be able to swing open and close in the centrifugal direction. In a centrifugal weight type governor for an engine, a push part 12 for pushing out a flange part 11 of a slider 10 is provided protrudingly on the swing base end side of the weight 8 on the slider side side. Slider flange portions 11 are opposed to each other.
A stopper part 13 is formed to receive the slider 10, and the collar part 11 of the slider 10 is inserted into the groove formed by the pusher part 12 and the stopper part 13, and the slider 10 is opened and closed by swinging the weight 8 in the centrifugal direction. A centrifugal weight type governor for an engine, characterized in that excessive movement in an advancing direction is prevented by contact between a stopper part 11 and a slider flange part 11.