JPS6029676Y2 - Internal combustion engine starting device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a starting device for an internal combustion engine in a cold state, and is designed to automatically perform priming at the time of starting, thereby reliably preventing seizure accidents in various parts of the engine immediately after starting. be.

By the way, if an internal combustion engine is suddenly started after being stopped for a long time, various parts may operate without lubrication, resulting in a seizure accident.Therefore, it is necessary to supply lubricating oil to each part in advance, or priming This is done before starting the engine.

However, the priming is usually performed by rotating the starter motor and operating only the lubrication pump while the stop device that stops the fuel supply is activated, but in the past, the above-mentioned stop device was activated. There were many cases in which the starter motor was turned and the engine was started suddenly, resulting in a seizure immediately after starting.

The present invention has been developed in view of the above circumstances, and at the same time, when the starter motor is activated by an appropriate starting operation such as turning on a starting switch, a timer and a stop device that stops the fuel supply are activated, and the timer is activated. By terminating the operation of the stop device after the set time elapses, the engine can be started after priming is automatically and reliably performed by the starting operation, thereby preventing the priming from being neglected. This is to reliably prevent seizure accidents caused by

This will be explained below with reference to the embodiment shown in the drawings. In FIG. 1, 1 is a starting switch, 2 is a starter motor, and 3 is a timer. When the switch 1 is turned on, the motor 2 and the timer 3 are energized.

Reference numeral 4 denotes a contact point of the timer 3, which is opened when the set time of the timer has elapsed, and a relay 5 is connected in series to the contact point.

6 is a contact that closes when the relay is energized, and 7 is a fuel supply stop device connected in series to the contact, such as a solenoid for forcibly moving a fuel supply amount adjusting rod to a position where the amount of supply is zero.

According to the above configuration, when the start switch 1 is turned on, the starter motor 2 is activated and the crankshaft of the engine is rotated, thereby activating the lubricating pump, and at the same time, the timer 3 is energized and starts timing. However, at that point, the contact 4 of the timer is closed, so the relay 5 is energized and the contact 6 is closed, so the fuel supply stop device 7 is activated. This causes the pump to operate and perform priming without fuel being supplied to the engine.

However, when the set time of the timer 3 has elapsed, lubricating oil is distributed throughout the engine at that point, but the contact 4 of the timer opens, the relay 5 becomes de-energized, and the contact 6 closes. open, which causes the stop device 7
The operation of the engine is terminated and the supply of fuel is started to start the engine.

Next, the embodiment shown in FIG. 2 will be explained. 11 is a starting switch, 12 is a starter motor, 13 is a timer, 1
4 is a contact point of the timer, 15 is a relay, 16
1 is a contact point of the relay, and 17 is a fuel supply stop device, and these structures are similar to the embodiment shown in FIG.

However, in this embodiment, a temperature switch 1B is installed in series with the timer contact 14 and the relay 15, and when the temperature of lubricating oil or cooling water in the engine is detected and the temperature is above a certain level, the switch 18 is activated. is designed to open.

Therefore, in this embodiment, when starting the engine after a long period of stoppage, the temperature switch 18 is closed because the temperature of the lubricating oil or cooling water is low. Similarly, when the starting switch 11 is turned on, the starter motor 12 is activated, and at the same time, the fuel supply stop device 17 is activated via the timer 13 and relay 15, thereby priming the engine for a certain period of time before starting the engine. .

However, if the engine is restarted after a short period of time and lubricating oil still remains in each part, the temperature switch 18 may be opened because the lubricating oil or cooling water temperature is high. condition, so the start switch 11
When the starter motor 12 is turned on, the starter motor 12 operates, but since the relay 15 is not energized, the stop device 17 does not operate, which causes the engine to start immediately and eliminates unnecessary priming. It will become.

As described above, the internal combustion engine starting device of the present invention activates the starter motor and the lubricating oil pump by a starting operation such as turning on a starting switch, and at the same time activates the timer and fuel supply stop device. By configuring the stop device to end its operation after the set time has elapsed, priming is automatically performed before the engine is started by the above-mentioned starting operation. This eliminates the need to start the engine suddenly due to neglect, and has the effect of reliably preventing seizure accidents immediately after starting the engine.

[Brief explanation of drawings]

FIG. 1 is an electric circuit diagram of one embodiment of the starter device of the present invention, and FIG. 2 is an electric circuit diagram of another embodiment. 1.11 is the starting switch, 2.12 is the starter motor, 3
, 13 is a timer, 5 and 15 are relays, and 7.17 is a stop device.

Claims (1)

[Scope of utility model registration request] A starter motor is activated by a starting operation when the engine is cold, and a lubricating oil pump is activated. At the same time, a timer and a fuel supply stop device are activated, and the operation of the fuel supply stop device is ended when the set time of the timer has elapsed. A starting device for an internal combustion engine characterized by: