JPH0544542B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to an automatic engine speed control device that can automatically control the engine speed to a set value. (Prior Art) In a conventional configuration, an accelerator sensor having an accelerator lever that is rotated by a manual remote control and an engine rotation speed sensor that detects the engine rotation speed are arranged at separate and distant positions. Further, the electronic controller inputs and compares the set rotational speed signal from the accelerator sensor and the engine rotational speed signal from the engine rotational speed sensor, outputs an actuation signal corresponding to the comparison result to the regulator actuator, The regulator actuator drives the regulator lever of the governor. However, with the above configuration, if a problem occurs with electronic components such as the electronic controller, the installation position of the lever operating wire that connects the remote control and the accelerator sensor lever is changed to the governor's regulator lever, and the governor's regulator lever is It is necessary to be able to drive the rotor lever directly with a remote control. Therefore, it is not possible to respond quickly and easily when a problem occurs. (Problems to be Solved by the Invention) In the conventional configuration described above, the accelerator sensor and the engine rotation speed sensor that detects the engine rotation speed are placed in separate and distant positions, so the electronic controller such as the electric controller The problem is that when a problem occurs with a component, it cannot be dealt with quickly and easily. The present invention aims to solve the above-mentioned problems and provide an automatic engine speed control device that can be switched to a pure mechanical system with easy measures when trouble occurs. (Means for Solving the Problems) The present invention provides an accelerator sensor 16 having an accelerator lever 17 that is rotated by a manual remote control 18.
and an engine rotation speed sensor 22 that detects the engine rotation speed, inputs and compares the set rotation speed signal from the accelerator sensor 16 and the engine rotation speed signal from the engine rotation speed sensor 22, and calculates the comparison result. It has an electronic controller 23 that outputs a corresponding actuation signal to the regulator actuator 15, and the rear end of the shaft 50 is detachably connected to the output part of the regulator actuator 15. The regulator lever 14 of the governor is rotatably connected to the front end, the accelerator sensor 16 is integrally fixed to the regulator actuator 15, and the rear end of the shaft 50 is connected. The accelerator lever 17 is arranged in such a position that the rear end of the shaft 50 can be connected to the accelerator lever 17, so that if a problem occurs with the electronic component, the regulator lever can be operated via the accelerator lever 17 by the remote control 18. This is an automatic engine rotation speed control device characterized by being able to drive 14. (Example) Figure 3 showing the outline of the overall configuration (arrow F is forward)
, a governor 13 is attached to a fuel pump 12 attached to and driven by an engine 11, and a regulator actuator 15 is connected to a regulator lever 14 of the governor 13.
A governor 13 is controlled by a regulator actuator 15. An accelerator sensor 16 is integrally fixed to the regulator actuator 15, and a remote control cable 19 whose one end is connected to a remote control 18 is connected to an accelerator lever 17 of the accelerator sensor 16. Further, a switching lever 21 is connected to the remote control 18 via a remote control cable 20. On the other hand, an engine speed sensor 22 is provided near the drive shaft of the fuel pump 12 to detect the rotation of the drive shaft as a pulse signal, and outputs an engine speed signal to an electronic controller 23. . The unitized regulator actuator 15 and accelerator sensor 16 include
A lever position sensor 24 is provided to detect the rotational position of the accelerator lever 17 of the accelerator sensor 16, that is, the engine rotation speed setting position, and outputs a setting rotation speed signal to the electronic controller 23. The electronic controller 23 compares the engine speed signal from the engine speed sensor 22 and the set speed signal from the lever position sensor 24, and operates the regulator actuator 15 to control the engine to the set speed. It has the function of outputting a signal. Additionally, an electronic controller 2 is provided to control the troll valve actuator 25.
3 is electrically connected to the troll valve actuator 25, and a clutch engagement sensor 27 and a troll valve position sensor 28 are electrically connected to the electronic controller 23.
The electronic controller 23 is connected to send a predetermined signal to the electronic controller 23.
It is now possible to input . A clutch housing 30 containing a clutch is disposed between the engine 11 and the output shaft 29. As shown in FIG. 1, which is an enlarged view of the regulator actuator 15 and the accelerator sensor 16, the regulator actuator 15 projects forward onto a bracket 31 fixed to the end surface of the clutch housing 30. It is fixed in position and has a motor 32 driven by an actuation signal from an electronic controller 23 (FIG. 3). The rod 33, which is the output part of the regulator actuator 15, protrudes generally forward and is slid by being driven by the motor 32 in its longitudinal direction (arrow X direction and reverse X direction). A bracket 3 is attached to the top of the regulator actuator 15.
5 is fixed, and an accelerator sensor 16 is placed and fixed on the bracket 35. The accelerator lever 17 of the accelerator sensor 16 can rotate around a fulcrum A, and the accelerator lever 17
One end of a remote control cable 19 is connected to the tip of the remote controller 7 via a pole joint 36.
Further, the accelerator sensor 16 has two rotation speed limiting bolts 37 whose protrusion amount can be adjusted, so that the rotation of the accelerator lever 17 is limited within a predetermined angle. On the other hand, the front end of the support 40 is welded to the lower part of the regulator lever 14 which can rotate around the fulcrum B. The support 40 is a generally flat plate-like member that extends back and forth and up and down. As shown in FIG. 2, an adjustment member 41 extending in the vertical direction (perpendicular to the plane of the paper) is disposed in the center of the support 40, and a support bolt 42 that is rotatably fitted to the support 40 is disposed at the center of the support 40. The tip portion is screwed and fixed to the adjustment member 41. Also, the front and back sides of the support 40 are made of adjustment material 4.
1 is bent at right angles to the side where the adjustment bolt 4 is arranged, and at the bent part there is an adjustment bolt 4 extending approximately in the front-rear direction.
3 and 44 are screwed together. Adjustment bolts 43, 44
The distal end portions facing each other are in contact with both the front and rear sides of the adjusting member 41, respectively. The adjustment member 41 is designed to be able to rotate around the support bolt 42, and the center of rotation is the fulcrum C in FIG. That is, the rotational attitude of the adjustment member 41 about the fulcrum C can be adjusted by changing the screwing state of the adjustment bolts 43 and 44. As shown in FIG. 1, an elongated hole 45 extending in the longitudinal direction is formed in the adjustment member 41, and an adjustment bolt 46 passing vertically through the elongated hole 45 is provided in the adjustment member 41.
1 is rotatably fitted. Furthermore, a lock bolt 47 is threaded onto the side surface of the adjustment member 41 in a direction perpendicular to the adjustment bolt 46, so that rotation of the adjustment bolt 46 with respect to the adjustment member 41 can be prevented. An adjusting member 48 is slidably fitted into the elongated hole 45 in a direction perpendicular to the paper plane of FIG.
8 is screwed into the adjustment bolt 46 within the elongated hole 45. One end of a ball joint 49 is attached to a portion of the adjustment member 48 that protrudes toward the front side of the drawing than the adjustment member 41 . ball joint 4
The other end of the shaft 9 is bent approximately at a right angle and is attached to the front end of a shaft 50 extending in the X direction. The rear end of the shaft 50 is connected to the rod 3 of the regulator actuator 15 via a ball joint 51.
3 is removably attached. Note that the accelerator lever 17 of the accelerator sensor 16
The tip of the shaft is bent at a right angle toward the support 40, and when the ball joint 51 is removed from the rod 33 and the shaft 50 is rotated upward around the adjustment member 48, the bending occurs. A ball joint 51 is attached to the portion. Next, the operation will be explained. In FIG. 3, when the engine 11 is started, the fuel pump 12 is driven, and an engine speed signal is input from the engine speed sensor 22 to the electronic controller 23. On the other hand, by manually operating the remote control 18,
Accelerator lever 1 via remote control cable 19
7 is changed, and a set rotational speed signal is input from the lever position sensor 24 to the electronic controller 23 based on the rotation position. The electronic controller 23 compares the engine rotation speed signal and the set rotation speed signal, and if the set rotation speed and the actual engine speed do not match, sends an operating signal to the regulator actuator so that the two match. Eta 15
Output to. When the regulator actuator 15 receives the activation signal, the motor 32 shown in FIG.
direction or in the reverse X direction. The sliding movement of the rod 33 is transmitted to the support 40 via the ball joint 51, shaft 50, ball joint 49, adjustment member 48, etc., and rotates the regulator lever 14 about the fulcrum B. That is, the governor 13 in FIG. 3 is controlled thereby, and the engine 11 is controlled.
The rotation speed is maintained at the set rotation speed. Here, if a trouble occurs in electronic components such as the electronic controller 23 for some reason and automatic control by the electronic controller 23 and regulator actuator 15 becomes impossible,
Deal with it as follows. Remove the ball joint 51 shown in FIG. 1 from the rod 33, rotate the shaft 50 upward around the adjustment member 48, and move the ball joint 51 to the accelerator lever 1 as shown by the imaginary line.
Connect to the tip of 7. As a result, there is no communication between the regulator actuator 15 and the support 40, and the accelerator lever 17 is connected via the shaft 50.
will be directly connected to the support 40. After this, by manually operating the remote control 18, the accelerator lever 17 and the shaft 50
The engine speed can be changed arbitrarily by directly driving the regulator lever 14 via the motor, etc. By switching to manual operation, it becomes necessary to adjust the rotational position of the accelerator lever 17 and the rotational position of the regulator lever 14.
Next, the adjustment is performed by the unit of the support 40 portion. By rotating the adjustment bolts 43 and 44, the adjustment member 41 is adjusted to rotate around the fulcrum C. Further, by rotating the adjustment bolt 46, the adjustment member 48 can be moved in the longitudinal direction of the adjustment bolt 46. Therefore, adjustment bolt 4
3 and 44 and the adjustment bolt 46, the fulcrum position of the shaft 50 on the ball joint 49 side can be freely changed on the vertical and longitudinal planes. That is, if some trouble occurs and automatic control by the regulator actuator 15 becomes impossible due to the above operation, it becomes possible to quickly and easily switch to manual operation with a single touch. be. Note that the operation for changing the fulcrum position on the ball joint 49 side of the shaft 50 can be performed in the same way during normal operation when the shaft 50 is connected to the regulator actuator 15 side, and it also facilitates adjustment during normal operations. can contribute. Furthermore, in the above embodiment, the accelerator sensor 16 is integrally fixed to the regulator actuator 15 and is integrated into a unit.
The regulator actuator 15 and the accelerator sensor 16 can be easily attached to and detached from the engine side, and it is also possible to easily adapt to changes in the model. (Effects of the Invention) In the present invention, since the accelerator sensor 16 and the regulator actuator 15 are integrated,
If the control system such as the electronic controller 23 is damaged, the ball joint 5 at the rear end of the shaft 50
1 from the rod 33 and remove the accelerator lever 17.
The regulator lever 14 can be mechanically operated by the remote control 18 as shown in the two-dot chain line in FIG. Accelerator lever 17 that moves accelerator sensor 16 in this way
By using , it is possible to convert from an electric type to a mechanical type without changing the operating method or position of the operator.

[Detailed description of the invention]

FIG. 1 is a partial side view of an automatic engine speed control device according to the present invention, FIG. 2 is a partial plan view thereof, and FIG. 3 is a schematic diagram of the overall configuration. 13... Governor, 14... Regulator lever, 15... Regulator actuator, 16... Accelerator sensor, 17... Accelerator lever, 18... Remote control, 22... Engine rotation speed sensor, 23... ...Electronic controller, 33... Rod (output section), 5
0...Shaft.

Claims (1)

[Claims] 1 It has an accelerator sensor 16 having an accelerator lever 17 that is rotated by a manual remote control 18, and an engine rotation speed sensor 22 that detects the engine rotation speed, and the set rotation speed signal from the accelerator sensor 16 and the engine rotation speed sensor The output section of the regulator actuator 15 includes an electronic controller 23 that inputs and compares the engine rotation speed signal from the regulator actuator 22 and outputs an actuation signal corresponding to the comparison result to the regulator actuator 15. shaft 50
The rear end portion is removably connected to the shaft 50.
The regulator lever 14 of the governor is rotatably connected to the front end of the governor, the accelerator sensor 16 is integrally fixed to the regulator actuator 15, and the rear end of the shaft 50 is connected. The accelerator lever 17 is arranged in a position where the accelerator lever 17 can be connected to the rear end of the shaft 50, and the regulator is connected to the accelerator lever 17 using the remote control 18 in the event of trouble with the electronic components. An automatic engine speed control device characterized in that a lever 14 can be driven.