JPS6335853Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch control device for an automatic vehicle equipped with a transmission with a torque converter.

By the way, the following problems have been pointed out in conventional automatic vehicles.

(1) Since the clutch is engaged when starting the engine, resistance from the transmission is added, especially in cold weather, resulting in poor starting performance.

(2) Also, move the shift lever to the low position (hereinafter referred to as "L position") or drive position (hereinafter referred to as "D position").
That's what it means. ) or the reverse (back) position (hereinafter referred to as the "R position"), the clutch will disengage after a predetermined time from this point, so the clutch will disengage after grasping the shift lever. If the shift lever is operated beforehand, there are problems in that the shift to a predetermined shift position may not be possible or that the shift operation is heavy.

(3) Furthermore, since the idle up mechanism operates when the clutch is disengaged after shifting the shift lever to L, D, and R positions, the idle rotation speed increases, resulting in the clutch being disengaged. There is a problem that the shock when connecting is large.

The present invention aims to solve these problems, and aims to provide a clutch control device for an automatic vehicle that can appropriately control on/off of the clutch depending on the shift position of the shift lever. do.

Therefore, the device of the present invention can be used in an automatic vehicle having an idle up mechanism capable of increasing the idle rotation speed to prevent the idle rotation speed from decreasing, and a fluid pressure clutch, in which the shift position of the shift lever is set to the neutral position. Or an inhibitor switch installed in the engine starting circuit to close only when the vehicle is in the parking position, a shift lever switch that closes when the shift lever is grasped and opens when the shift lever is released, and a shift lever switch that is connected in series with the shift lever switch and presses the accelerator pedal. an electromagnetic fluid pressure clutch control member that opens and otherwise closes the fluid pressure clutch, an electromagnetic fluid pressure clutch control member that disconnects the fluid pressure clutch when energized and connects the fluid pressure clutch when deenergized; The hydraulic clutch control member and the relay switch are connected in parallel to the inhibitor switch, and the hydraulic clutch control member and the relay switch are connected in parallel to the inhibitor switch. The fluid pressure clutch control member and the relay switch are connected in parallel to the connected shift lever switch and the accelerator switch, and the inhibitor switch and the shift lever switch and the accelerator switch are connected in parallel to each other. It is characterized by

DESCRIPTION OF THE PREFERRED EMBODIMENTS A clutch control device for an automatic vehicle as an embodiment of the present invention will be explained below with reference to the drawings, which are electrical circuit diagrams thereof.

Now, the vehicle equipped with this device is configured as an automatic vehicle that has an idle up mechanism that increases the idle rotation speed and prevents it from decreasing, and also has a hydraulic clutch as a fluid pressure clutch. Furthermore, this vehicle is equipped with a converter equipped with a torque converter using the above-mentioned hydraulic clutch, and a shift lever is provided in the vehicle interior to switch the converter.

The shift lever has the following shift positions: neutral position (hereinafter referred to as "N position"), parking position (hereinafter referred to as "P position"), L,
It is designed so that it can be shifted to each position of D and R.

By the way, as shown in FIG. 1, an ignition switch 3 is connected to the positive terminal of the battery 1 via a fusible link 2. As shown in FIG.

The ignition terminal IG of the ignition switch 3 is connected to one end of an excitation coil 5a in a starter relay switch 5 via an inhibitor switch 4, and the other end of the excitation coil 5a is grounded.

Further, the starter terminal ST of the ignition switch 3 is connected to one end of the excitation coil 7a in the starting relay switch 7 of the starter motor 6 via the switch piece 5b of the starter relay switch 5. The other end is grounded.

And switch piece 7 of this relay switch 7
b is connected in series with the starter motor 6, and the switch piece 7b, the starter motor 6, and the battery 1 constitute a main circuit for starting the motor.

By the way, the inhibitor switch 4 closes only when the shift lever of the transmission equipped with a torque converter is in the N position or the P position, and closes only when the shift lever of the transmission with the torque converter is in the other shift positions (L, D, R positions). is configured to open, therefore, only when the ignition switch 3 is set to the starter position and the shift lever is set to the N or P position, the relay switches 5 and 7 close and the starter motor 6 Otherwise, the relay switches 5 and 7 remain open, making it impossible to start the starter motor 6. In addition,
When the ignition switch 3 is placed in the starter position, both terminals IG and ST are made conductive.

In this way, the inhibitor switch 4 is installed in the engine starting circuit so that the shift lever can be turned to N or P.
It is possible to start the engine only when the inhibitor switch 4 is in the
An excitation coil 9a of an electromagnetic hydraulic clutch control member 9 and an excitation coil 10a of an electromagnetic relay switch 10 for idle-up detection are connected in parallel via a diode 8.

The hydraulic clutch control member 9 is configured to disconnect the hydraulic clutch when the excitation coil 9a is energized, and to connect the hydraulic clutch when the excitation coil 9a is de-energized. When the excitation coil 10a is energized, the idle-up detection relay switch 10 opens the switch piece 10b and demagnetizes the idle-up solenoid 11, thereby rendering the idle-up mechanism inoperable. When the excitation coil 10a is de-energized, the switch piece 10b closes and the idle-up solenoid 11 is energized, thereby putting the idle-up mechanism into operation.

In addition, the switch piece 10b of the relay switch 10
One end is connected to fuse 1 in fuse box 12.
2a to the ignition terminal IG of the ignition switch 3, and the switch piece 10b
The other end is grounded via the idle up solenoid 11.

By the way, a shift lever switch 13 that closes when the shift lever is grasped and opens when the shift lever is released is provided on the knob of the shift lever, and an accelerator switch 14 is connected in series with this shift lever switch.

The accelerator switch 14 is a switch that is provided on an accelerator pedal and is configured to open when the accelerator pedal is depressed and close otherwise.

A hydraulic clutch control member 9 is connected to the switches 13 and 14 provided in series as a pair.
The excitation coil 9a of the relay switch 10 and the excitation coil 10a of the relay switch 10 are connected in parallel.

To explain this connection state in more detail, one end of the shift lever switch 13 is connected to the accelerator switch 14.
One end of the shift lever switch 13 is connected to the other end of the shift lever switch 13, and one end of each of the excitation coils 9a and 10a described above is connected in parallel.

The other end of the accelerator switch 14 is connected to the ignition terminal IG of the ignition switch 3 so that it can be connected to the positive side of the battery 1, and furthermore, the other end of the accelerator switch 14 is connected to the ignition terminal IG of the ignition switch 3 so that it can be connected to the positive side of the battery 1.
The other end of 0a is grounded.

By the way, the inhibitor switch 4, the shift lever switch 13, and the accelerator switch 14 are connected in parallel with each other, so that the shift lever switch 13 and the accelerator switch 1
There is a risk that the current that flows when the switch 4 is closed may flow into the inhibitor switch 4 side and cause the starter relay switch 5 to be operated by mistake. This prevents the starter relay switch 5 and, by extension, the starter motor 6 from malfunctioning.

Since the clutch control device for an automatic vehicle according to the present invention is constructed as described above,
The functions and effects of the shift lever when the engine starts, when the shift lever is in the N or P position, when the shift lever shifts and when the vehicle starts are explained as follows.

(1) When starting the engine First, move the shift lever to the N or P position, and then operate the ignition switch 3 to the starter position. As a result, the inhibitor switch 4 is closed, the starter relay switch 5 is closed, and in conjunction with this, the relay switch 7 for starting the starter motor is also closed, so that the starter motor 6 is closed.
starts, and the engine starts.

At this time, the inhibitor switch 4 is closed and the respective exciting coils 9a, 10a of the hydraulic clutch control member 9 and the idle-up detection relay switch 10 are excited, so that the hydraulic clutch control member 9 changes the hydraulic circuit to disengage the clutch, and the idle-up detection relay switch 10 is opened to deactivate the idle-up mechanism.

In this way, when the engine is started, the clutch is disengaged, so there is no load on the transmission side, improving startability, and since the idle up mechanism is inactive, the idle rotation speed is reduced. This makes it possible to reduce the shock when subsequently engaging the clutch.

(2) When the shift lever is in the N or P position Since the inhibitor switch 4 is closed at this time as well, the clutch is disengaged and the idle speed is not high. Therefore, the same effect as when starting the engine can be obtained.

(3) When shifting the shift lever Next, when shifting the shift lever from the N or P position to the L, D or R position, the inhibitor switch 4 opens, but the shift lever switch 13 does not close the shift lever when shifting. The accelerator switch 14 is closed because the accelerator pedal is not depressed during the same shift, and the excitation coils 9a and 14 of the hydraulic clutch control member 9 and the idle-up detection relay switch 10 are closed.
Since 10a continues to be energized as in cases (1) and (2) above, the clutch remains disengaged and the idle speed is not high.
Therefore, shift operations can be performed lightly and smoothly.

At this time, the action of the diode 8 prevents the starter motor 6 from operating erroneously.

(4) When starting To start the vehicle next time, move the shift lever to L, D or R position, then release the shift lever and gradually depress the accelerator pedal. At this time, both the shift lever switch 13 and the accelerator switch 14 are opened, so the excitation coils 9a and 10a of the hydraulic clutch control member 9 and the idle-up detection relay switch 10 are demagnetized, which connects the clutch and activates the idle-up mechanism. is activated to increase the idle rotational speed, preventing the idle rotational speed from decreasing due to the torque converter load, and allowing the vehicle to start smoothly without causing so-called engine stalling.

As described in detail above, the clutch control device for an automatic vehicle according to the present invention provides the following effects and advantages.

(1) When the shift lever is in the N or P position, the clutch is disengaged, so there is no load on the transmission side, improving starting performance.

(2) Since the clutch is disengaged when the shift lever is in the N or P position, even if the shift lever is shifted to the D, L, or R position, there is a problem with conventional devices due to the delay in the hydraulic clutch operation, that is, it is difficult to shift. Problems such as heavy shift operations are resolved.

(3) The idle up mechanism, which compensates for the drop in idle speed due to torque converter load, is configured to operate only when the shift lever is in the D, L, or R position and when the clutch is engaged. Can be controlled accurately.

[Brief explanation of the drawing]

The figure is an electrical circuit diagram showing a clutch control device for an automatic vehicle as an embodiment of the present invention. 1...Battery, 2...Fusible link,
3...Ignition switch, 4...Inhibitor switch, 5...Start release switch, 5
a... Excitation coil, 5b... Switch piece, 6...
Starter motor, 7... Relay switch for starting the starter motor, 7a... Excitation coil, 7b... Switch piece, 8... Diode, 9... Electromagnetic hydraulic clutch control member as an electromagnetic hydraulic clutch control member, 9a ...Exciting coil, 10...Idle-up detection electromagnetic relay switch, 10a...
...Exciting coil, 10b...Switch piece, 11...
Idle up solenoid, 12...fuse box, 12a...fuse, 13...shift lever switch, 14...accelerator switch.

Claims (1)

[Scope of utility model registration request] In an automatic vehicle having an idle up mechanism capable of increasing the idle rotation speed to prevent the idle rotation speed from decreasing, and a hydraulic clutch, the clutch is closed only when the shift lever is in the neutral position or the parking position. An inhibitor switch installed in the engine starting circuit, a shift lever switch that closes when the shift lever is grasped and opens when the shift lever is released, and an accelerator switch that is connected in series with the shift lever switch and opens when the accelerator pedal is depressed and closes otherwise. and an electromagnetic fluid pressure clutch control member that disconnects the fluid pressure clutch when energized and connects the fluid pressure clutch when de-energized; and an electromagnetic fluid-pressure clutch control member that disables the idle-up mechanism when energized and causes the idle-up mechanism to operate when de-energized. The hydraulic clutch control member and the relay switch are connected in parallel to the inhibitor switch, and the shift lever switch and the accelerator switch are connected in series to the inhibitor switch. The above-mentioned hydraulic clutch control member and the relay switch are connected in parallel to each other, and the above-mentioned inhibitor switch, and the above-mentioned shift lever switch and accelerator switch are connected in parallel to each other. Clutch control device in a tick vehicle.