JPH029098Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an engine starting device for an automobile that is equipped with a starter switch that drives a starter for starting the engine.

Generally, an automobile engine is started by the driving force of a starter, which is a starting motor. Further, the operation of this starter is controlled by a starter relay connected to a starter switch. This starter switch can be switched with the engine key to the lock position, the ACC position (energized position) which energizes internal equipment such as the radio, the on position and the start position. The fuel supply is maintained in a stopped state, and fuel is supplied to the engine in the on position and the start position. This starter switch also has a B terminal connected to the power supply, an A terminal connected to this B terminal at the ACC position, and
An M terminal is provided which is connected to the B terminal via the A terminal in the ON position, and an S terminal is connected to the B terminal via the M terminal and the A terminal in the start position. The starter relay is connected to this S terminal, and when the engine key is switched to the start position, the starter relay is operated and the starter is driven.

Incidentally, there is also known a configuration in which a substarter switch is disposed near the engine, and by turning on the substarter switch, a starter relay can be operated to drive the starter. However, since the conventional substarter switch was connected to the M terminal of the starter switch via the substarter circuit, it was necessary to switch the engine key to the on position. Therefore, regardless of whether the starter switch or substarter switch is used to drive the starter, fuel is supplied to the engine at the same time as the starter is driven. If there is insufficient oil supply to the turbocharger bearings or sliding parts of metal parts in the engine, such as after replacement or after a long period of non-operation, the bearings may seize when the engine is started. This has the disadvantage of increasing oil consumption. Furthermore, in the conventional configuration, if the substarter switch is turned on while the engine is stopped and the shift lever is shifted to a position other than the neutral position, the substarter switch is turned on. At the same time, there was a risk that the car would start moving, which posed a problem in terms of improving safety.

This idea was created in consideration of the above circumstances, and its purpose is to reliably prevent bearing seizure and increase in oil consumption when starting the engine, as well as to improve safety. An object of the present invention is to provide an automobile engine starting device that can perform the following functions.

An embodiment of this invention will be described below with reference to the drawings. This drawing shows a schematic configuration of a starter switch 1 installed in an automobile. This starter switch 1 is in lock position 2, where it locks the steering when an engine key (not shown) is switched, and energizes interior equipment such as the radio.
It is possible to switch to ACC position (energized position) 3, ON position 4, and start position 5, respectively.
In the lock position 2 and the ACC position 3, the fuel supply to the engine is maintained at a stopped state,
At the ON position 4 and the start position 5, fuel is supplied to the engine.
The starter switch 1 also has a B terminal (first
terminal) 6, A terminal (second terminal) 7, M terminal (third terminal) 8 and S terminal (fourth terminal) 9
are provided for each. A DC power supply 11 is connected to the B terminal 6 via a fuse 10. Further, a starter 14 is connected between the fuse 10 and the B terminal 6 via a normally open contact 13b of a relay 12, which will be described later. The A terminal 7 is connected to the B terminal 6 when the starter switch 1 is switched to the ACC position 3, and the M terminal 8 is connected to the B terminal via the A terminal 7 when the starter switch 1 is switched to the ON position 4. 6, and the S terminal 9 is connected to the M terminal 8 and the A terminal 7 when switched to the start position 5.
It is designed to be connected to the B terminal 6 via. Further, a solenoid 13a of the starter relay 12 is connected to this S terminal 9. This starter relay 12 is formed by a solenoid 13a and a normally open contact 13b, and when the starter switch 1 is switched to the start position 5, the DC power supply 11 is connected to the starter relay 12.
A current is supplied to the solenoid 13a, and as the solenoid 13a is energized, the normally open contact 13b is closed to drive the starter 14.
Also, the solenoid 13 of this starter relay 12
One end of the sub-starter circuit 15 is connected to a. This substarter circuit 15 has a substarter switch 16 and a neutral detection switch 17 connected in series, and the other end is connected to the A terminal 7 of the starter switch 1. The neutral detection switch 17 is held in a closed state when the gear shift lever of the transmission is located in a neutral position, and is held in an open state when the gear shift lever is located in a position other than neutral. It is. The substarter switch 16 controls the starter relay 12 on and off when the starter switch 1 is switched to the ACC position 3 and the neutral detection switch 17 is held closed. It is placed in a nearby location.

Thus, in the case of the above configuration, the substarter circuit 15 equipped with the substarter switch 16
is connected to the A terminal 7 of the starter switch 1, the starter switch 1 can be switched to the ACC position 3 and the starter 14 can be driven in a state where the supply of fuel to the engine is stopped. In this case, set substarter switch 16 to 10
By turning on the starter relay 12 for about 15 seconds, the starter relay 12 is operated, the normally open contact 13b is closed, and the starter 14 is driven, so that only the oil pump can be driven by the starter 14. Therefore, it is possible to supply sufficient oil to the turbocharger bearings and sliding parts of metal parts in the engine before starting the engine, so it is possible to supply sufficient oil to the turbocharger bearings and sliding parts of metal parts in the engine. It is also possible to reliably prevent bearing seizure and an increase in oil consumption when starting the engine. Further, a substarter switch 16 and a neutral detection switch 17 are connected in series in a substarter circuit 15 whose one end is connected to the solenoid 13a of the starter relay 12 and whose other end is connected to the A terminal 7 of the starter switch 1. This makes it possible to prevent the sub starter circuit 15 from being energized when the shift lever is shifted to any shift position other than the neutral position. Therefore, when the engine is stopped and the shift lever is shifted to a position other than the neutral position, the substarter switch 1
Since it is possible to eliminate the possibility that the vehicle will start moving at the same time as the substarter switch 16 is turned on when the substarter switch 6 is turned on, safety can be improved.

It should be noted that this invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of this invention.

As explained above, according to this invention, the starter can be driven when the fuel supply to the engine is stopped based on the on operation of the substarter switch. Oil can be supplied by driving the starter, and it is possible to reliably prevent bearing seizure and an increase in oil consumption when starting the engine. Furthermore, since the substarter switch and the neutral detection switch are interposed in series in a substarter circuit whose one end is connected to the solenoid of the starter relay and the other end is connected to the second terminal of the starter switch, To eliminate the possibility that the vehicle starts moving at the same time as the substarter switch is turned on when the substarter switch is turned on while the engine is stopped and the shift lever is shifted to a position other than the neutral position as in the conventional case. It is possible to improve safety.

[Brief explanation of drawings]

The figure is a schematic diagram showing the main parts of an embodiment of this invention. 1... Starter switch, 2... Lock position,
3...ACC position (energized position), 4...ON position,
5...Start position, 6...B terminal (first terminal), 7...A terminal (second terminal), 8...M terminal (third terminal), 9...S terminal, (second terminal) 4 terminals), 1
1...Power supply, 12...Starter relay, 13a...
... Solenoid, 13b... Normally open contact, 14... Starter, 15... Sub starter circuit, 16... Sub starter switch.

Claims (1)

[Scope of utility model registration request] Equipped with a starter switch that can be switched to a lock position, an energized position that energizes internal equipment, an on position, and a start position when the engine key is switched.In the lock and energize positions, fuel supply to the engine is maintained at a halt. is,
In the on position and the start position, fuel is supplied to the engine, and the starter switch has a first terminal connected to a power source, a second terminal connected to the first terminal in the energized position, a third terminal connected to the first terminal via the second terminal in the on position, and a third terminal connected to the first terminal via the third terminal and the second terminal in the start position; In an engine starting device for an automobile, a fourth terminal is provided, and the solenoid of a starter relay consisting of a solenoid for driving a starter and a normally open contact is connected to the fourth terminal, one end of which is connected to the starter relay. A neutral detection switch is connected to the solenoid of the starter switch, and the other end is connected to the second terminal of the starter switch, and the neutral detection switch is closed when the shift lever is in the neutral position. a substarter circuit having a substarter switch attached thereto, the normally open contact being energized by the solenoid based on an on operation of the substarter switch when the starter switch is in an energized position and the shift lever is in a neutral position. An engine starting device for an automobile, characterized in that the starter can be driven in a state where fuel supply to the engine is stopped by closing the starter.