JPH0138266Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a diesel engine operation control device in which the engine's speed regulating lever is switched between a constant operating operating position and an idling rotational position. The purpose is to start and stop an engine easily and reliably.

Conventionally, in this type of operation control device, the speed regulating lever was
The idling stopper holds the engine at the idling position, and the engine cannot be stopped at lower speeds than that, so the regulating lever cannot stop the engine.

Therefore, in order to stop the engine, a stop solenoid that cuts off the fuel from the fuel injection pump is provided separately from the control lever operation system.

Therefore, when stopping the engine with these types of engines, it is necessary to move the speed regulating lever to the low speed rotation position, and
Two operations are required: one to activate the stop solenoid.

Moreover, in order to reliably stop the engine, the stop solenoid must be kept operating for a long time until the engine completely stops, which is time-consuming and increases battery consumption.

Therefore, in order to reduce battery consumption,
There is a device that incorporates a timer circuit into the power supply circuit of the stop solenoid, but this requires multiple power supply circuits.

Further, in order to easily operate the speed regulating lever to the low speed side by operating a switch, the present inventor considered the system shown in FIG. 3 prior to the present invention.

That is, a speed regulating lever 40 is interlocked with a rod 41 to an arm 39 of a wiper motor 36 which is oscillated by switching the main switch, and the left and right reciprocating stop positions 42 and 43 of the arm 39 are set to the respective positions of the regulating lever 40. By using the operating position 37 and the idling position 38, the speed regulating lever 40 can be automatically set to the idling position 38 simply by turning the main switch to the stop position.

However, these devices require an electric circuit for operating the wiper motor in addition to the conventional electric circuit for operating the stop solenoid, and the arm of the wiper motor only moves relatively slowly, making it difficult to quickly start the engine. The problem is that it is difficult to stop it.

The present invention was proposed in order to eliminate the above-mentioned drawbacks.The present invention uses a return spring to push and bias the speed regulating lever beyond the idling position and into the engine stop position, and by switching the main switch, the return spring is activated. The speed regulating lever is provided with an operating solenoid that moves the speed regulating lever to the operating operating position and an idle solenoid that moves the speed regulating lever to the idle position.
When the main switch is set to the starting position, the idle solenoid is activated, and the speed regulating lever is driven to the idling position against the tension of the return spring, allowing the engine to start quickly. When the switch is moved to the stop position, the operation solenoid and idle solenoid are deactivated, and the speed regulating lever is immediately returned to the engine stop position by the tension of the return spring, allowing the engine to be stopped immediately.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a longitudinal side view of a soundproof engine generator. This engine generator 1 is equipped with a radiator 4, a diesel engine 5, and a generator 6 driven by the engine in a soundproof chamber 3 in a soundproof case 2. They are fixed in order.

A fuel tank 7 is fixed to a partition plate 8 above the generator 6, and a partition wall 9 is provided above the partition plate 8.
A muffler 10 is provided in the front space partitioned by.

To ventilate and cool the soundproof room 3, outside air is sucked in through the cooling air intake window 12 by the blowing force of the radiator fan 11 driven by the engine 5, and is introduced into the soundproof room 3 through the cooling air intake 13 behind the partition plate 8. The radiator 4 is vented from the rear of the soundproof room 3 to the front.
After being ventilated and cooled, it is discharged to the outside from the cooling air outlet 14.

A control panel 15 is provided above the rear portion of the soundproof case 2 facing the cooling air intake 13, and a control device 16 is attached to the back surface of the control panel 15.

The control panel 15 is provided with a main switch 17, which controls the operation of the engine 5.

That is, the main switch 17 is configured to be able to switch between an engine stop position 18, an operating position 19, and a starting position 20, as shown in FIG. 22 and an operating solenoid 23 which operates more strongly than this, and an operating switch 24 is provided in the power supply circuit of the operating solenoid 23.

This idle solenoid 22 is provided on the right side of a speed regulating lever 26 that adjusts the fuel injection amount of the fuel injection pump 25, and when activated, it resists a return spring 27 that urges the speed regulating lever 26 to an engine stop position 35. and swings to the idling position 28.

Further, the operating solenoid 23 is provided on the inner surface of the left side wall of the soundproof case 2 so that its rear end can swing.
It is connected via a rod 30 to an excessive motion absorption mechanism 29 provided at the tip 26a of the speed regulating lever 26.

The excessive motion absorption mechanism 29 includes a piece 31 pivotably supported on the tip end 26a of the speed regulating lever 26 through which the aforementioned rod 30 is inserted.
When the operating switch 24 in the power supply circuit of the operating solenoid 23 is turned on and the operating solenoid 23 is activated, the rod 30 and the excessive operating force are absorbed. The speed regulating lever 26 is brought to an operating position 33 via a mechanism 29.

When the main switch 17 is set to the starting position 20,
In addition to the operating position 19, the starter 34 is also supplied with power.

The operation of the diesel engine operation control device configured as described above will now be described.

When starting engine 5, turn main switch 1
7 to the starting position 20. Then Batsuteri 21
Current is now supplied to the idle solenoid 22 and the operating solenoid 23, but the operating solenoid 23 is cut off by the operating switch 24, and only the idle solenoid 22 operates to control the speed. The lever 26 is returned to the idling position 28 against the spring 27.

At this time, since the rod 30 connected to the operating solenoid 23 slides inside the piece 31 of the excessive motion absorption mechanism 29, it does not affect the operation of the idle solenoid 22 to swing the speed regulating lever 26 to the idling position 28. I won't give anything.

At the same time, power is also supplied to the starter 34, so that the engine 5 is started with the speed regulating lever 26 set at the idling position 28.

When engine 5 starts, main switch 17
is set to the operating position 19, the power supply to the starter 34 is cut off, and the engine 5 is kept at idling rotation.

In this way, when the engine 5 is sufficiently warmed up, the operation switch 24 is turned on and the operation solenoid 23 is turned on.
Activate.

When the operating solenoid 23 is operated, its operating amount is large, swinging the regulating lever 26 to the operating position 33 and causing the engine 5 to operate at high speed.

At this time, the idle solenoid 22 is also working, but since the amount of its operation is small, it does not affect the operation of the operating solenoid 23 in any way.

Next, when stopping the engine 5 from the running and idling operating states, the main switch 17 is set to the stop position 18, and power supply to the idling solenoid 22 and the operating solenoid 23 is stopped.

In this way, when both the solenoids 22 and 23, which were being oscillated against the return spring 27 of the speed regulating lever 26, stop operating, the speed regulating lever 26 is moved by the return spring 27.
The engine 5 is returned to the stop position 35 with a tension of 7, the fuel injection amount of the fuel injection pump 25 is set to zero, and the engine 5 is stopped.

The present invention is configured and operates as described above, and thus has the following effects.

(a) The idle solenoid is connected to the battery via the main switch, so in order to start the engine and keep it idling, all you have to do is move the main switch to the operating position.
This energizes the idle solenoid and drives the speed regulating lever to the idling position.
Retained. Therefore, in order to start the engine and keep it in an idling state, it is sufficient to simply move the main switch to the operating position, making the starting operation extremely easy.

(b) The idle solenoid is connected to the battery via the main switch, and the operating solenoid is connected to the battery via the operating switch and the main switch. , the operating solenoid and the idle solenoid are de-energized at the same time, and the speed regulating lever is returned and the tension of the spring immediately pulls it beyond the idling position and back to the engine stop position, so the engine can be stopped immediately. can be done. Therefore, in order to stop the engine from a running state, only one operation of moving the main switch to the stop position is sufficient, and the stopping operation is extremely easy.

(c) The speed regulating lever, which is returned to the engine stop position by the main switch stop operation, is returned to that position and held by the spring, so there is no need to restart the engine after the engine stop operation, and the engine can be stopped reliably. can. Further, there is no power consumption to maintain the stop position of the speed regulating lever, and there is no battery consumption.

(d) Moreover, the operation control device of the present invention is configured such that the speed regulating lever can be set and operated by the operating solenoid and the idling solenoid when the engine is running and idling, and when the engine is stopped, the speed regulating lever can be operated. The structure is simple and can be implemented at low cost by simply attaching a return spring to the speed regulating lever to move the speed control lever from the idling position to the stop position.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of a soundproof engine generator.
FIG. 2 is a plan view of the main part, and FIG. 3 is a view corresponding to FIG. 2 showing an example of the previous design. 5... Diesel engine, 17... Main switch, 21... Battery, 22... Idle solenoid, 23... Operating solenoid, 24...
...Operating switch, 26... Speed regulating lever, 27...
...Return spring, 28...Idle position, 33...
...Operating position, 35...Stop position.

Claims (1)

[Scope of utility model registration request] A speed regulating lever 26 for setting the operating speed of the diesel engine 5 is supported so as to be swingable between three positions: an engine stop position 35, an idling position 28, and an operating position 33.
The speed regulating lever 26 is returned to the stop position 35 by the energization of the idle solenoid 22 and the spring 27
from the stop position 35 to the idling position 28 against
The regulating lever 26 is configured to be able to be driven from the idling position 28 to the operating position 33 against the return spring 27 by energizing the operating solenoid 23, and the idling solenoid 22 is configured to be able to be driven from the idling position 28 to the operating position 33 by energizing the operating solenoid 23. Connect to battery 21 through
A diesel engine operation control device characterized in that an operating solenoid 23 is connected to a battery 21 via an operating switch 24 and a main switch 17.