JPH0988635A - Centrifugal governor for diesel engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make assembling work of a centrifugal governor to an engine simple and highly accurate. SOLUTION: It is so constituted that a rack pin 5 is pressed onto the fuel quantity increase side R by a start spring 2 and a governor spring 8 and pressed to the fuel quantity decrease side L by the governor force G of a governor weight 18 through a first lever 1a. A stopper member 40 for regulating the oscillation of the first lever 1a onto the fuel quantity increase side R into a position corresponding to a torque up position Tu is fitted between the first lever 1a and a second lever 1b. The adjustment of the stopper member 40 can thereby be determined by an oscillating angle from a pivot 17. Accordingly, in the case of fitting a centrifugal governor 31 to an engine, only the protruding quantity of a lever limiting pin 11 should be adjusted through an engaging groove 36 of a fuel limiting actuator 32 so as to simplify adjusting work and to heighten assembling accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal governor for a diesel engine, and more particularly to a technique for suppressing generation of black smoke during sudden acceleration operation.

[0002]

2. Description of the Related Art As a conventional centrifugal governor for a diesel engine, Japanese Patent Laid-Open No. 7-1 has already proposed by the present applicant.
There is one disclosed in Japanese Patent No. 39374. For example, as shown in FIG. 4, the start spring 2 and the governor weight 18 are interlockingly connected to the rack pin 5 of the control rack of the fuel injection pump of the diesel engine via the first lever 1a, and the governor is connected to the second lever 1b. The speed control lever 7 is connected via a spring 8 so that the tension of the governor spring 8 can be adjusted and operated by the speed control lever 7, and the second lever 1b is connected to the fuel limiter 9 at the full load position 4 /.
4 is configured to be able to receive.

The rack pin 5 is driven by the start spring 2 via the first lever 1a and the second lever 1b.
The governor spring 8 elastically presses the fuel increase side R via the governor spring 8, while the governor force G of the governor weight 18 presses the fuel decrease side L via the first lever 1a. Further, the torque increasing device 3 is interposed between the first lever 1a and the second lever 1b, and the lever limiting pin 11 that can be moved back and forth is inserted through the torque increasing device 3 into the first lever 1a.
The lever limiting pin 11 is configured to be movable back and forth by a solenoid 12, and the forward / backward drive means 2 is provided.
It is configured to drive at 0A. The first lever 1a and the first lever 1b are pivotally supported by a pivot shaft 17, respectively.

The centrifugal governor having the above structure operates as follows. The advancing / retreating drive means 20 at the time of starting the engine
The key switch 14 constituting A is rotated to the starting position S to retract the lever limiting pin 11 with the solenoid 12, and the tension of the start spring 2 moves the rack pin 5 to the starting increasing position S _T via the first lever 1a. Located in.
After the engine is started, the key switch 14 is returned to the ON position and the lever limiting pin 11 is projected so that the lever limiting pin 11
By receiving the first lever 1a via the torque increase device 3, the excessive swing of the fuel increase side R of the first lever 1a is limited, and the generation of smoke during the sudden acceleration operation is suppressed.

More specifically, when the governor lever 8 is suddenly accelerated, the tension of the governor spring 8 immediately increases, but there is a time delay in increasing the engine speed. Therefore, in the configuration without the lever limiting pin 11, the balance between the tension of the governor spring 8 and the governor force G is lost, the control rack rapidly moves to the fuel increase side R, and a large amount of fuel is injected to generate black smoke. . On the other hand, with the configuration shown in FIG. 4, the lever limiting pin 11 receives the first lever 1a via the torque increasing device 3 to limit excessive swinging of the first lever 1a on the fuel increase side R. Therefore, the generation of black smoke during the sudden acceleration operation can be suppressed.

Further, in the rated load operation state, the rack pin 5 is removed via the second lever 1b and the first lever 1a by the balance force of the governor spring 8 and the start spring 2 and the governor force G opposed thereto. Load position 0 /
4 and the full load position 4/4 within the metering range. When the engine shifts to overload operation, the engine speed decreases, the governor force G decreases, and the tension of the governor spring 8 causes the first lever 1a and the second lever 1b to move to the fuel increase side R.
To pull. At this time, the second lever 1b comes into contact with the fuel limiter 9 and stops, but the elastic force of the torque spring 4 of the torque increasing device 3 overcomes the governor force G and pushes out the torque pin 3a. As a result, the rack pin 5 is metered through the first lever 1a within the metering range between the full load position 4/4 and the torque-up position T _U on the increasing side, and the engine increases the torque and exhibits tenacity. To do.

[0007]

However, in the above-mentioned prior art, when the centrifugal governor 10 composed of the first lever 1a and the second lever 1b is assembled to the engine, the adjustment work becomes complicated and the adjustment accuracy is improved. There is a problem that it cannot be done. This is the adjustment work of the fuel limiter 9 so that the second lever 1b can be received at the full load position 4/4 by the fuel limiter 9, and the lever limiter for preventing excessive swinging at the time of sudden acceleration. This is because the work of adjusting the restricted position of the pin 11 must be performed separately when the centrifugal governor 10 is mounted on the engine.

The adjusting work will be described in detail. First, the rack pin 5 is brought into contact with the second lever 1b so that the rack pin 5 is at the full load position 4/4 with the torque pin 3a of the torque increasing device 3 being pushed in most. The protrusion amount of the fuel limiter 9 is adjusted. Next, the protruding position of the lever limiting pin 11 is adjusted so that the rack pin 5 does not exceed the torque-up position T _U when the torque pin 3a is in the most protruding state. Therefore, it is necessary to adjust the protrusion amount of the fuel restricting tool 9 and the lever restricting pin 11 at the same time when the centrifugal governor 10 is assembled, and a precise adjustment work is required at the assembly position of the centrifugal governor where workability is poor. As a result, the workability of engine manufacturing is reduced, and there is a limit to the improvement of assembly accuracy.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and prevents black smoke from being generated at the time of sudden acceleration of an engine, simplifies the work of assembling a centrifugal governor into an engine, and achieves high accuracy. It is an object of the present invention to provide a centrifugal governor for a diesel engine, which can be realized.

[0010]

A centrifugal governor for a diesel engine according to claim 1 for achieving the above object,
For example, referring to FIGS. 1 and 2, the first lever 1a and the second lever 1b are pivotally supported on a pivot shaft 17 so that the first lever 1a and the second lever 1b are pivotally supported on a rack pin 5 of a fuel injection pump of a diesel engine. 1 The start spring 2 and the governor weight 18 are interlockingly connected via the lever 1a, the speed control lever 7 is connected to the second lever 1b via the governor spring 8, and the tension of the governor spring 8 is adjusted by the speed control lever 7. The rack pin 5 is configured to be operable, and the governor spring 8 and the start spring 2 elastically press the rack pin 5 toward the fuel increasing side R.
The governor weight 18 is configured to press against the fuel reduction side L by the governor force G, and when the engine is overloaded, the torque increase device 3 causes the rack pin 5 to torque from the full load position 4/4 via the first lever 1a. In a centrifugal governor (hereinafter, referred to as a prerequisite structure) of a diesel engine configured to perform a metering within a metering range up to the up position T _U , the fuel limiting actuator 32 is faced to the second lever 1b. The case body 3 fixed to the machine wall 34 and the fuel limiting actuator 32 fixed to the governor machine wall 34
3, lever retractable pin 11 housed in the case body 33, retracting drive means 37, 38 for driving the lever restricting pin 11 to retract and retract, and projecting drive means 35, and lever restricting pin 11. An adjusting means 36 for adjusting the amount of protrusion is provided to swing the first lever 1a toward the fuel increase side R between the first lever 1a and the second lever 1b.
By providing a restricting means 40 for restricting to a position corresponding to _U and driving the retreat drive means 37, 38 at the time of engine start to retract the lever limiting pin 11, the rack pin 5 at the time of engine start operation is moved to the first lever. 1a is positioned at the start bulking position S _T via, by protruding the lever restricting pin 11 by driving the protruding drive unit 35 during engine operation, thereby restricting the swing of the second lever 1b, the regulating means 40 It is characterized in that it is configured so as to restrict the swinging motion of the first lever 1a beyond the torque-up position T _U.

A centrifugal governor for a diesel engine according to a second aspect of the present invention will be described with reference to FIG. 3, for example. In the centrifugal governor for a diesel engine having the above-described premise, the second lever 1b faces the second lever 1b for fuel restriction. Actuator 32
Is fixed to the governor machine wall 34, and the fuel limiting actuator 32 is fixed to the governor machine wall 34, the case main body 33, the retractable torque increasing device 3 housed in the case main body 33, and the torque Equipped with retreat drive means 37, 38 for driving the up-and-down device 3 in and out and a projecting drive means 35, and adjusting means 36 for adjusting the projecting amount of the torque-up device 3, and includes the first lever 1a and the second lever 1b. oscillating torque-up position to the fuel increase side R of the first lever 1a T _U between
The restriction pin 40 for restricting the position of the rack pin 5 at the time of the engine starting operation is provided by driving the retreat driving units 37 and 38 at the time of engine starting to retract the torque increasing device 3. Position to the starting increase position S _T , the protrusion drive means 35 is driven during engine operation to cause the torque increase device 3 to protrude, and the regulation means 40 swings the first lever 1a beyond the torque increase position T _U. It is characterized in that the operation is restricted.

[0012]

According to the centrifugal governor of the diesel engine of the first aspect, the rack pin 5 can be positioned at the starting amount increasing position S _T at the time of starting the engine, and the restricting means 4 can be provided.
Since the rocking motion of the first lever 1a exceeding the torque-up position T _U is regulated by 0, even when the engine is rapidly accelerated, the movement of the first lever 1a is increased by the regulation means 40 even at the maximum. Since the position is limited to the position T _U , the control rack suddenly increases the fuel increase side R
It is possible to prevent the generation of black smoke due to moving to.

Further, the adjustment of the regulating means 40 is performed by the pivot 17
Since it can be uniquely determined by the swing angle θ from, the regulation means 40 can be adjusted in advance before the centrifugal governor is attached to the engine. Therefore, when the centrifugal governor is attached to the engine, it is sufficient to adjust the protrusion amount of the lever limiting pin 11 by the adjusting means (engagement groove 36) of the fuel limiting actuator 32, which simplifies the adjusting work and enhances the assembling accuracy. be able to.

Also in the centrifugal governor of the diesel engine according to the second aspect, the rack pin 5 can be positioned at the starting increasing position S _T at the time of starting the engine, and the torque increasing position T _U of the first lever 1a is controlled by the restricting means 40.
Since the swinging motion exceeding the limit is restricted, the movement of the first lever 1a is restricted to the torque-up position T _U by the restricting means 40 even during the rapid acceleration of the engine, so that the control rack is rapidly moved. Fuel increase side R
It is possible to prevent the generation of black smoke due to moving to. Furthermore, since the regulation means 40 can be uniquely determined by the swing angle θ from the pivot shaft 17, the regulation means 40 can be adjusted in advance before the centrifugal governor is attached to the engine. Therefore, when the centrifugal governor is attached to the engine, the fuel limiting actuator 32
It is only necessary to adjust the protrusion amount of the torque increasing device 3 by the adjusting means (engagement groove 36), so that the adjusting work can be simplified and the assembling accuracy can be improved.

[0015]

As described in the above operation, according to the invention of claim 1, the following unique effects are exhibited. (A) It is possible to position the rack pin at the start-up amount position when the engine is started, and it is possible to prevent black smoke from being generated due to the control rack being rapidly moved to the fuel amount increase side even when the engine is rapidly accelerated. .

(B) Since the regulating means can be adjusted in advance before the centrifugal governor is attached to the engine, when the centrifugal governor is attached to the engine, the lever limiting pin is projected by the adjusting means of the fuel limiting actuator. Only the amount needs to be adjusted, the adjustment work can be simplified and the assembling accuracy can be improved. According to the invention of claim 2, the effect of the above (a) can be exerted, and at the same time, the following peculiar effect is exerted.

(C) Since the regulating means can be adjusted in advance before the centrifugal governor is attached to the engine, when the centrifugal governor is attached to the engine, the torque limiting device is projected by the adjusting means of the fuel limiting actuator. Only the amount needs to be adjusted, the adjustment work can be simplified and the assembling accuracy can be improved. (D) Since the torque increasing device is incorporated in the fuel limiting actuator, the adjusting mechanism can be integrated into one device, and maintenance processing can be easily performed during adjustment and replacement.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic diagram of a centrifugal governor of a diesel engine according to a first embodiment of the present invention, and FIG. 2 is a schematic diagram for explaining advantages of the first embodiment. The centrifugal governor 31 has the same basic structure as the conventional centrifugal governor shown in FIG. That is, the first lever 1a is attached to the rack pin 5 of the fuel injection pump of the diesel engine.
The governor weight 18 and one end of the start spring 2 are interlocked with each other via. Further, the speed adjusting lever 7 is connected to the second lever 1b via the governor spring 8 so that the tension of the governor spring 8 can be adjusted by the speed adjusting lever 7. The first lever 1a and the second lever 1b are pivotally supported by a pivot shaft 17, respectively.
Similar to the configuration described above, the torque up device 3 is interposed between the first lever 1a and the second lever 1b.

The centrifugal governor 31 elastically presses the rack pin 5 toward the fuel increasing side R by the start spring 2 and the governor spring 8, while the governor weight 18
The governor force G is used to press the rack pin 5 toward the fuel reduction side L via the first lever 1a. Next, the characteristic structure of this embodiment will be described. A first feature of the present embodiment is that a fuel limiting unit that faces the second lever 1b and has different fuel limiting positions at the time of engine start and at the time of engine operation is provided.

The fuel limiting means comprises a fuel limiting actuator 32 in FIG. The case body 33 of the fuel limiting actuator 32 is mounted on the governor wall 3
4 is fixed by being screwed into the housing 4 so as to be adjustable forward and backward, and the protrusion driving means of the lever limiting pin 11 is composed of a compression spring 35 for biasing the base end portion of the lever limiting pin 11 housed in the case body 33 toward the protruding side. ing. The adjusting means for adjusting the protruding amount of the lever limiting pin 11 from the outside of the governor machine wall 34 is constituted by the engaging groove 36 of the screwing tool of the case body 33.

The retraction driving means for the lever limiting pin 11 includes an electromagnetic solenoid 37 for retracting the lever limiting pin 11 against the compression spring 35, and a solenoid drive circuit 38 for exciting the electromagnetic solenoid 37 when the engine is started. I have it. The solenoid drive circuit 38 includes a battery 15 and a key switch 14, and when the engine is started, the key switch 14 is operated to a start position S so that the electromagnetic solenoid 37 is actuated.
To drive the lever limiting pin 11 back to the position indicated by the solid line, and in other cases, the electromagnetic solenoid 37 is turned off and the biasing force of the compression pin 35 causes the lever limiting pin 11 to reach the position indicated by the phantom line. It is configured to project.

The second feature of this embodiment is that the first lever 1
The stopper member 40 for restricting the movement of the fuel a on the fuel increasing side R is fixed to the second lever 1b. Second lever 1b
The swing angle θ (see FIG. 2) at which the rack pin 5 is limited by the stopper member 40 is the torque increasing position T _U of the rack pin 5 when the first lever 1a is limited to the full load position 4/4 by the lever limiting pin 11. The width is set to be limited to. An elongated hole 41 extending in the movement width direction is opened at the base end portion of the stopper member 40 on the second lever 1b side, and the fixing position of the elongated hole 41 is adjusted by a pair of fixing screws 42 attached to the second lever 1b. Thus, the swing angle θ can be adjusted.

The operation of the centrifugal governor 31 having the above structure will be described. First, at the time of engine starting operation, the operator operates the key switch 14 to the start position S to turn on the electromagnetic solenoid 37 and turn on the compression spring 35.
Against this, the lever limiting pin 11 is retracted to the position shown by the solid line. As a result, the rack pin 5 is actuated by the tension of the start spring 2 via the first lever 1a to increase the starting increase position S _T.
It is suppressed by the pressure and makes it easier to start the engine. After the engine is started, the key switch 14 returns to the on position, so the electromagnetic solenoid 37 is turned off, and the force of the compression spring 35 pushes the lever limiting pin 11 to the position indicated by the imaginary line.
This limits the rack pin 5 to the full load position 4/4.

When the engine shifts to overload operation, the elastic force of the torque spring 4 of the torque increasing device 3 overcomes the governor force G and pushes out the torque pin 3a, so that the rack pin 5 is fully loaded via the first lever 1a. The engine increases the torque and exerts tenacity by adjusting the amount within the adjusting range between the position 4/4 and the torque-up position T _U which is on the increasing side. Further, when the engine is in operation, take the speed adjusting lever 7 to the high-speed rotation side at once, that is, when suddenly accelerating, the second lever 1b contacts the lever limiting pin 11 and cannot move any further, but is connected to the rack pin 5. The operating first lever 1a rapidly moves in the direction of increasing fuel until the governor force G acts. However, in the present embodiment, the stopper member 40 limits the first lever 1a to the torque-up position T _U , so that it is possible to prevent the black smoke from being emitted.

Although such an operation is basically the same as that of the invention disclosed in the above-mentioned Japanese Patent Laid-Open No. 7-139374, the structure of the present embodiment allows the centrifugal governor to be mounted on an engine. There is an advantage that the work is easy. That is, as shown in FIG. 2, the pivot shaft 17 of the rack pin 5 is
Relative to the pivot shaft 17 and the swinging relationship of the first lever 1a and the second lever 1b with respect to the pivot shaft 17 are predetermined. Therefore, the moving width by setting the swinging angle θ allowed by the stopper member 40, that is, the torque-up position. The length for setting T _U can be set in advance even when the centrifugal governor 31 of the engine is not assembled. Therefore, the first lever 1a in which the movement width of the stopper member 40 is set in advance,
The second lever 1b may be attached to an actual engine, and the case body 33 may be adjusted in the engagement groove of the engagement groove 36 so that the rack pin 5 is at the full load position 4/4 when the lever limiting pin 11 is in the protruding state. .

As described above, in this embodiment, the centrifugal governor 3 is used.
Since the adjustment work when assembling 1 to the engine is sufficient only by adjusting the main body case 33 of the lever limiting pin 11,
There is an advantage that the work can be simplified and the adjustment accuracy can be improved.

[0027]

Second Embodiment FIG. 3 is a schematic view showing a second embodiment of a centrifugal governor for a diesel engine according to the present invention.
The centrifugal type governor of the second embodiment is different from that of the first embodiment in that the torque increasing device 3 is the same as in the first embodiment.
Is not interposed between the first lever 1a and the second lever 1b, but the torque increasing device 3 is fixed to the governor wall 34 by the fuel limiting actuator 32 so as to be able to move forward and backward. The first lever 1a is the second lever 1b.
On the other hand, it can move independently to the fuel increase side R, but not to the second lever 1b because the first lever 1a contacts the second lever 1b by the contact portion 43 on the fuel decrease side L. It is structured so that it cannot be moved.

In this embodiment, the lever limiting pin 1 of the fuel limiting actuator 32 in the first embodiment is used.
Instead of 1, the torque increasing device 3 having the torque spring 4 built therein can be retracted and protruded by the electromagnetic solenoid 37 and the compression spring 35. Also in this embodiment, since the moving width of the stopper member 40 can be defined in advance before the engine of the centrifugal governor is mounted, the amount of protrusion of the torque increasing device 3 of the fuel limiting actuator 32 can be adjusted to the full load position 4/4. There is an advantage that is sufficient.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the present invention. Hereinafter, such an embodiment will be described. (1) In the above embodiment, the regulating means is configured to be adjustable by the stopper member 40 fixed to the second lever 1b.
The first lever 1a may be adjustable. Further, the regulation means is not limited to the configuration shown in FIGS. 1 and 2, and is not particularly limited as long as it can substantially regulate the swing angle θ of the first lever 1a with a bolt or the like.

(2) In the above embodiment, the combination of the electromagnetic solenoid 37 and the solenoid drive circuit 38 is illustrated as a structure for retracting the lever limiting pin 11 and the torque increasing device 3 at the time of starting the engine. The lever limiting pin 11 and the torque increasing device 3 may be retracted when the engine is started by the detecting means and the driving means.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a centrifugal governor according to a first embodiment of the present invention.

2A and 2B are schematic views for explaining advantages of the centrifugal governor in the first embodiment, FIG. 2A is a front view of the centrifugal governor, and FIG. 2B is a centrifugal governor. FIG.

FIG. 3 is a schematic diagram of a centrifugal governor according to a second embodiment of the present invention.

FIG. 4 is a schematic view of a conventional centrifugal governor disclosed in JP-A-7-139374.

[Explanation of symbols]

1a ... 1st lever, 1b ... 2nd lever, 2 ... Start spring, 3 ... Torque increasing device, 5 ... Rack pin, 7
... speed control lever, 8 ... governor spring, 11 ... lever limiting pin, 17 ... pivot shaft, 18 ... governor weight, 32 ...
Fuel limiting actuator, 33 ... Case body, 34 ...
Governor machine wall, 35 ... compression spring, 36 ... engaging groove 38 ... solenoid drive circuit, 40 ... stopper member, L ... fuel reduction side, R ... fuel increase side, G ... governor force, T _U ... torque-up position.

Claims (2)

[Claims] 1. A first lever (1a) and a second lever (1b) are swingably supported on a pivot shaft (17), and a first lever is attached to a rack pin (5) of a fuel injection pump of a diesel engine. (1
Start spring (2) and governor weight via a)
(18) is interlockingly connected, the speed control lever (7) is connected to the second lever (1b) via the governor spring (8), and the tension of the governor spring (8) is adjusted by the speed control lever (7). Operated so that the rack pin (5) is elastically pressed to the fuel increase side (R) by the governor spring (8) and the start spring (2), while the governor force (G) of the governor weight (18) is used. When the engine is overloaded, the rack pin (5) is pushed through the first lever (1a) to the full load position (4/4) when the engine is overloaded. In the centrifugal governor of the diesel engine configured to adjust the amount within the adjustment range from the torque up position (T _U ) to the torque increasing position (T _U ), the fuel limiting actuator is exposed by facing the second lever (1b).
(32) is fixed to the governor wall (34), and the fuel limiting actuator (32) is housed in the case body (33) fixed to the governor wall (34). Lever limit pin (11) that can be moved in and out and lever limit pin (11)
The first lever (1a) is provided with the retreat drive means (37) and (38) and the protrusion drive means (35) for driving and retracting the lever, and the adjusting means (36) for adjusting the protrusion amount of the lever limiting pin (11). ) And the second lever (1b) between the first lever (1a) and the fuel increase side (R) swing to the torque up position.
A restricting means (40) for restricting to a position corresponding to (T _U ) is provided, and when the engine is started, the retreat drive means (37) (38) are driven to retract the lever restricting pin (11) so that the engine The rack pin (5) at the time of starting operation is the first lever
(1a) through a is positioned at the start bulking position (S _T), with protruding driving means (35) is driven during engine operation by projecting the lever restricting pin (11), the second lever
Diesel characterized by being configured to restrict swinging of (1b) and to restrict swinging motion of the first lever (1a) beyond the torque-up position (T _U ) by the restricting means (40). Centrifugal engine governor. 2. A first lever (1a) and a second lever (1b) are swingably supported on a pivot shaft (17), and the first lever is attached to a rack pin (5) of a fuel injection pump of a diesel engine. (1
Start spring (2) and governor weight via a)
(18) is interlockingly connected, the speed control lever (7) is connected to the second lever (1b) via the governor spring (8), and the tension of the governor spring (8) is adjusted by the speed control lever (7). Operated so that the rack pin (5) is elastically pressed to the fuel increase side (R) by the governor spring (8) and the start spring (2), while the governor force (G) of the governor weight (18) is used. When the engine is overloaded, the rack pin (5) is pushed through the first lever (1a) to the full load position (4/4) when the engine is overloaded. In the centrifugal governor of the diesel engine configured to adjust the amount within the adjustment range from the torque up position (T _U ) to the torque increasing position (T _U ), the fuel limiting actuator is exposed by facing the second lever (1b).
(32) is fixed to the governor wall (34), and the fuel limiting actuator (32) is housed inside the case body (33) fixed to the governor wall (34). The torque increasing device (3) which can be freely moved in and out,
Retreat drive means (37) for driving the torque up device 3 in and out.
(38) and protrusion drive means (35), and torque-up device
(3) Adjusting means (36) for adjusting the amount of protrusion, and between the first lever (1a) and the second lever (1b), the fuel increase side (R) of the first lever (1a). Torque up position for oscillation
A restriction means (40) for restricting to a position corresponding to (T _U ) is provided, and when the engine is started, the retraction drive means (37) (38) are driven to retract the torque increasing device (3), thereby The rack pin (5) at the time of starting operation is the first lever
(1a) to the starting increase position (S _T ), and when the engine is operating, the protrusion drive means (35) is driven to cause the torque increase device (3) to protrude, and the restricting means (4)
0) The centrifugal governor for a diesel engine, which is configured to restrict the swinging motion of the first lever (1a) beyond the torque-up position (T _U ).