JPS6036788Y2 - Diesel engine decompression operating device - Google Patents

Description

[Detailed description of the invention] The purpose of the invention is to facilitate the operation of starting and stopping a diesel engine by automatically linking the operation of the engine decompressing rod with the operation of the key switch. .

In this invention, when the diesel engine is stopped, the key switch is changed from the operating position to the stop position, the power generated by the dynamo is used to rotate the drive motor, and the engine decompressor is operated via the cam mechanism, and when the diesel engine is started, the key switch is moved to the starting position. By doing so, the drive motor is connected to the battery and rotated, and the decompressor is put into a non-operating state via the cam mechanism, and the decompressor is automatically operated by simply operating the key switch.

The present invention will be explained in detail below with reference to embodiments shown in the drawings.

FIG. 1 shows the starting electric circuit of a diesel engine,
1 is a battery, 2 is a magnet switch, 3 is a starter motor, 4 is a dynamo, 5 is a regulator, and 6 is a key switch.

Reference numeral 7 designates a drive motor for driving a cam mechanism 10 (to be described later) for carrying out the present invention, and connects a contact point C at the stop position of the key switch 6 to the regulator 5 to connect the regulator 5 and the battery 1. A diode 8 is inserted in between to form a decompression operation circuit for when the engine is stopped.A contact A for starting the key switch 6 is connected to the magnet switch 2, and it is also connected to the drive motor 7 via a diode 9 to perform a decompression operation circuit for starting. Configure the operating circuit.

Referring to FIG. 2, the cam mechanism 10 includes a first cam body 12 that is driven by a drive motor 7 via a deceleration mechanism 11, and a roller 14a at the tip that contacts the first cam body 12 and moves up and down. A connecting rod 1 that reciprocates and rotates a shaft 13 whose base is fixed.
4, and a second cam body 15 which is fixed to the shaft 13 and abuts against the end of the decon prod 17 to move the decon prod 17 between an operating position and a non-operating position.

In FIG. 2, reference numeral 16 denotes a bearing for rotatably supporting the shaft 13, which is fixed at an appropriate location on the machine body.

When the diesel engine is stopped, when the key switch 6 is set to the OFF position C, a decompression operation circuit is formed for supplying the power generated by the dynamo 4 to the drive motor 7, as shown in FIG. Ru.

Therefore, when the key switch 6 is turned off, the drive motor 7 is activated.

On the other hand, when operating a diesel engine, the cam mechanism 10
The first cam body 12 and the second cam body 15 are in the position shown in FIG. 4, and the decomprod 17 is in the upper position and inactive.

When the drive motor 7 is started, the first cam body 12 rotates in the direction of arrow a, the connecting rod 14 rotates in the direction of arrow C, and the second cam body 15 rotates in the direction of arrow C, and the decompressed rod 17 rotates. is moved in the direction of arrow d.

When the decompressor 17 moves in the direction of arrow d and reaches the state shown in FIG. 5, it is in the decompressor operating position, air is removed from the engine, and the engine is stopped.

Since the dynamo 4 is stopped when the engine is stopped, power is no longer supplied to the drive motor 7, and the drive motor 7 is stopped.

Thus, by turning off the key switch 6,
The decompressor 17 automatically moves to the operating position and the engine is stopped.

When the engine is started, as mentioned above, the engine is stopped with the decompressor 17 in the operating position, so it is necessary to return the decompressor 17 to the non-operating position shown in Fig. 4, but the key switch 6 must be moved to the starting position A. When turned to , the magnetic switch 2 closes to start the starting motor 3, and the battery 1, the key switch 6, the contact A, the diode 9, and the decompression operation circuit for the starting time of the drive motor 7 are closed.

The drive motor 7 thus rotates during the moment when the key switch 6 is in the starting position A.

When the drive motor 7 is activated, the cam mechanism 10 moves the first cam body 12 in the direction of arrow a and the reflective force, the connecting rod 13 in the direction of arrow b' opposite to the direction of the arrow, and the second cam body 15 in the direction opposite to arrow C. The decompressor 17 is moved in the direction of the arrow C' force, and the decompressor 17 is raised in the direction of the arrow d' opposite to the arrow d, as shown in FIG.

When the drive motor 7 is stopped by rotating the key switch 6 from the starting contact A to the running contact B, the first cam body 1
2 is stopped at a predetermined decompression release position by the stopper action of a spring 18 and a pressing roller 19.

As described above, the present invention is provided with a drive motor that starts when the key switch is set to the start position or when the key switch is rotated from the operating position to the stop position. Since the engine is automatically moved to the operating position and to the non-operating position when starting, the diesel engine can be started and stopped just by operating the key switch, just like a gasoline engine, except for the troublesome decompression operation in diesel engines. It makes it possible.

[Brief explanation of the drawing]

FIG. 1 is an electrical circuit diagram showing a power supply circuit to a drive motor in a diesel engine decompression operating device embodying the present invention. FIG. 2 is also a schematic diagram showing an outline of the cam mechanism. FIG. 3 is an electric circuit diagram showing the decompression operation circuit when the engine is stopped. FIG. 4 is a schematic diagram showing the state of the cam mechanism in an operating state (decompression non-operating state). FIG. 5 is a schematic diagram similar to FIG. 4, showing the cam mechanism when the diesel engine is in a stopped state (decompression operating state). FIG. 6 is an electrical circuit diagram showing the decompression operation circuit at startup. 1... Battery, 4... Dynamo,
5...Regulator, 6...Key switch, 7...Drive motor, 8,9...
...Diode, 10...Cam mechanism, 17...
...Deconstructed.

Claims (1)

[Scope of Claim for Utility Model Registration] A circuit that connects a regulator to a drive motor when the key switch is changed from the operating position to the stop position and rotates the drive motor using the power generated by the dynamo as the engine rotates, and starts the key switch. The circuit includes a circuit for connecting the battery to the drive motor via a key switch and rotating the drive motor with electric power from the battery when the drive motor is in the position, and a cam mechanism for operating the engine decompensation by rotation of the drive motor. a cam mechanism configured to move the decompensation rod in the operating direction with the rotation of the drive motor when the engine is stopped, and to move the decompensation prod in the non-operation direction with the rotation of the drive motor when the engine is started; Engine decompression rod operating device.