JPS63242733A - Automatic speed change gear for gear type transmission - Google Patents

Abstract

PURPOSE:To permit a vehicle to travel at the slow speed corresponding to the idle revolution speed without stepping ON an accelerating pedal by installing an idle traveling switch which can be operated from a driver's seat. CONSTITUTION:An idle traveling switch 12 permits a vehicle to travel at a low speed without stepping an accelerating pedal, and installed at the position permitting operation from a driver's seat, and a selecting lever 11 is installed in the car compartment, and the D-range, reversing, first speed, and the second speed positions are selected by the driver's intention, and a contact point switch is installed at each selection position for the driver and reverse, and a selection position signal supplied from the contact point switch is input into a control unit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an automatic transmission device for a gear transmission;
The present invention relates to an automatic transmission device using a gear transmission that enables low-speed running when the engine is idling.

(Prior Art) Conventionally, an automatic transmission of a gear transmission is configured as shown in FIG. As a result, when a clutch disengagement signal is output from the control unit 5 to the electromagnetic valve of the clutch actuator 8, the clutch is disengaged, and furthermore, the starter circuit is turned on and the engine can be started. Thereafter, by putting the select lever 11 into lunge and depressing the accelerator pedal, the output signals of the accelerator switch 4 and accelerator opening sensor 3 are input to the control unit 5, and the clutch connection signal from the control unit 5 is transmitted to the clutch actuator 8. The clutch is connected by the output to the solenoid valve of the gear transmission 1.
Engine E was disconnected and the vehicle started.

(Problems to be Solved by the Invention) In the above-mentioned conventional gear transmission automatic transmission, the clutch is connected and the vehicle can start when the accelerator pedal is depressed. As a result, the engine speed increases, the vehicle speed becomes too high, and stable low-speed driving is extremely difficult.

Therefore, in the present invention, by turning on the idle running switch provided on the driver's seat, for example, on the console box, it is possible to avoid running the IF vehicle at a slow speed without depressing the accelerator pedal, thereby solving the conventional problem described in ii. It is a technical problem to solve.

(Means for solving the problem) The technical means for solving the above problem is based on the output signal of the accelerator opening sensor that detects the amount of depression of the accelerator pedal and the output signal of the vehicle speed sensor that detects the vehicle speed. The gear transmission is equipped with a shift actuator for selecting the meshing position of the gear transmission, a select actuator, and a control unit I for outputting a drive signal to a clutch actuator interposed between the engine and the gear transmission. In the automatic transmission, an idle running switch is provided in the driver's seat for forcibly connecting the clutch and driving at a slow speed by idling the engine even if the clutch is not connected to the control unit and the accelerator pedal is not pressed. It is to be.

(Function) According to the automatic transmission device for the gear transmission configured as described above, when the idle running switch is turned on, the ON signal is input to the control unit, and thereby the control unit sends a drive signal to the clap actuator. output and connect the clutch. Therefore, the system operates to drive the vehicle at a very low speed equivalent to the idle speed of the engine even without pressing the accelerator pedal.

(Example) Hereinafter, one embodiment of the present invention will be explained based on the drawings.

Figure 1 shows a schematic diagram of the automatic transmission of a gear transmission, and Figure 2 shows the configuration of the control unit in the equipment.
FIG. 3 shows a control program within the control unit.

In the figure, a gear-type transmission 1 connected to an engine E
The gear transmission 1 includes a shift actuator 6 and a select actuator 7, which are a set of hydraulic cylinders that can change the engagement of the gears in the gear transmission 1, and a hydraulic cylinder that can connect and disconnect the clutch interposed between the engine E and the gear transmission 1. A set of clutch actuators 8 are provided, and the engine E is further provided with a throttle actuator 10 that can adjust the throttle opening. The shift actuator 6 can change gears in the shift direction shown in FIG. 5, and the select gear 7 can change gears in the select direction shown in FIG. .

These shift actuators 6, select! - The actuator 7, the clutch actuator 8, and the throttle actuator 10 are operated based on command signals from the control unit 5, which can be configured by a microphone, and the control unit 5 includes a vehicle speed sensor 2. Accelerator opening sensor 3. accelerator switch 4
．． Select bar 11. The configuration is such that signals from an engine rotation sensor 9, an idling switch, a switch 12, and a brake switch 3 are input.

The idle running switch 12 allows the vehicle to run at a slow speed without pressing the accelerator pedal, and is located at a position where it can be operated from the driver's seat.The select lever 11 is installed inside the vehicle and is operated by the driver. The position is selected based on the intention, such as D range (drive), reverse, 1st gear, 2nd gear, etc., and each drive or reverse position is selected.
A contact switch is provided at the position, and a select position signal from the contact switch is transmitted to the control unit 5.
is input. When the select lever 11 is set to the D range (drive), automatic speed change operation is performed, and at other positions, manual speed change operation similar to the conventional one is performed.

Further, the accelerator opening sensor 3 detects the amount of depression of the accelerator pedal by the driver, and is composed of a potentiometer or the like, and inputs an accelerator opening signal into the control unit 5. Further, an engine rotation sensor 9 is installed on the crankshaft of the engine E, and inputs the rotation speed of the crankshaft to the control unit 5.

Further, the vehicle speed sensor 2 is provided on the output shaft of the gear transmission 1, and inputs a vehicle speed signal to the control unit 5.

The accelerator switch 4 is installed below the accelerator pedal and consists of a normal ON/OFF switch, etc., and is turned ON when the driver's foot is on the accelerator pedal, and the foot is removed from the accelerator pedal. It turns 0FF-J when the accelerator is turned on and off.11
a is input to the control unit 5. Further, the brake switch 13 is provided to temporarily interrupt slow running at idling speed.

Further, the throttle actuator 1o is constituted by a stepping motor and is connected to a throttle valve shaft, so that the throttle valve can be opened and closed by rotation of the stepping motor.

Further, the shift actuator 6, the set actuator 7. The clutch actuator 8 is composed of a hydraulic cylinder and a solenoid valve that drives the hydraulic cylinder, and turns each solenoid valve ON, 0FF1, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, OFF, etc. based on a command signal from the control unit 5. ,,′
Each hydraulic cylinder is operated by switching the hydraulic boat using an IT magnetic valve.

The control unit 5 has a configuration as shown in FIG. 2, and includes a pulse input circuit 5 that inputs pulse signals from the vehicle speed sensor 2 and the engine rotation sensor 9.
a, an analog input circuit 5b that inputs an analog signal from the accelerator opening sensor 3, a position and status signal from the select lever 11 and the accelerator switch 4, an ON signal of the idle running switch 12, and an ON signal of the brake switch 13. A contact input circuit 5c that inputs an ON signal, a CPU 5e composed of, for example, an 8-bit microcomputer, a step motor drive circuit 5f' that outputs a drive command signal to the throttle actuator 10, and the shift actuator 6. It is mainly composed of a select actuator 7 and an electromagnetic valve drive circuit 5g that outputs an operation command signal to the clutch actuator 8.
The input signal is converted into a digital signal by the converter and inputted to the CPU 5e, and further to the contact input circuit 5c.
has a structure in which a signal is supplied to the CPU 5e via a multiplexer 5d.

In such a configuration, an automatic shift diagram that can determine shift points as shown in FIG. 4, for example, is stored in the CPUSe, and the select lever 11 is set to D.
When the range is selected, the control unit is based on this memorized automatic shift diagram!・Automatic shift control is performed at 5, and actuator 6.7.8 is activated as appropriate.
An activation command signal is issued.

For example, when a shift command is issued based on an automatic shift diagram, a command is first issued to the throttle actuator 10 to operate the throttle of the engine E in the closing direction, and the operation of the throttle actuator 10 lowers the engine speed, causing the Immediately before the engine shifts from the acceleration state to the coasting state (determined by the input signal from the engine rotation sensor 9), a command signal to disengage the clutch is issued to the clutch actuator 8, and the clutch actuator 8 operates to disengage the clutch. disconnected.

After that, a shift command based on the automatic shift diagram is issued to the shift actuator 6 and select actuator 7, and the shift actuator 6 controls the shift direction and the select actuator 7 controls the select direction, and the gears are shifted to a predetermined gear position. and shift. Thereafter, a connection command is issued to the clutch actuator 8, and the clutch actuator 8 is activated to connect the clutch. At the same time, a command is issued to the throttle actuator 10 to open the throttle position to a position that matches the amount of depression of the accelerator pedal (based on the input signal from the accelerator opening sensor 3), and the throttle position is adjusted. Such an operation command is issued every time the gear is changed, and the gear shifting operation is performed in the same flow as the operation normally performed by a driver when changing gears.

Next, the operation of this embodiment will be explained according to the flowchart of the control program shown in FIG.

Step SL of the above flowchart (hereinafter simply referred to as SL)
They are written as S2...S20. ), engine rotational speed data EREV, vehicle speed data VSP
, current gear position data of gear transmission 1 G 2%
Each of the ON and OFF data BR of the brake switch 13, the ON and OFF data Ace of the accelerator switch 4, and the ON and OFF data As of the idling switch 12 is read. In S2, the vehicle speed is a preset value X1
, for example, whether it is less than or equal to 4k+n/h. If the determination result in S2 is YES, it is determined in S3 whether or not the accelerator pedal is depressed. If the determination result is YES, normal start control is performed as shown in S4, and then the process returns to S1.

On the other hand, if the determination result in S2 is No, the process moves to S5, and in S5 it is determined whether the current gear position is the first gear position or the reverse position. If the determination result in S5 is YES, it is determined in S6 whether or not the accelerator pedal is depressed. The judgment result of S6 is NO.
In the case of
For example, it is determined whether the speed is 15 km/h or less. S7
If the determination result is YES, it is determined in S8 whether or not the idle running switch 12 is ON. If the idle running switch 12 is ON as determined by S8, S
At step 9, it is determined whether the brake switch 13 is ON or OFF. As a result of S9, the brake switch 13 is OFF.
In the case of F, it is determined in S10 whether the engine speed is below a preset A1, for example 650 rpm. If the judgment result in S10 is YES, S1
At step 1, after performing control to open the first tuttle, return to SL.

As a result of the judgment in step 510, the engine speed is A1.
If it is larger than that, it is determined in S12 whether the clutch is completed or not, and if the determination result is NO, it is determined in S13.
After clutch connection control is performed at , the process returns to SL. If the judgment result in S12 is YES, in S14 the engine rotation speed is A1+α (α is, for example, 100 rpm).
Determine whether or not the above is true. If the determination result in S14 is YES, the throttle is controlled in the direction of closing in step 315, and on the other hand, if the determination result in S14 is NO, the throttle is directly
Return to 1.

If the determination result in S5 is NO, or if the determination result in S6 is YES, or if the determination result in S7 is NO, or if the determination result in S8 is N.

In this case, normal clutch and throttle control is performed in 316, and the vehicle speed is set to a preset value X3 in S17.
Determine whether the following is true. The judgment result of S17 is YES.
If the result of S17 is No, the process returns to Sl after the idle running switch 12 is turned off in 318.

If the determination result in S3 is No, it is determined in 319 whether or not the idle running switch 12 is ON. S1
If the determination result in step 9 is NO, clutch disengagement control is performed in S20, and then the process returns to Sl. On the other hand, if the determination result in S19 is YES, the process moves to S9. If the determination result in S9 is YES, the process moves to S20 and clutch disengagement control is performed.

As described above, when the idle running switch 12 is operated to ON, the clutch is connected without depressing the accelerator pedal, allowing the vehicle to run at a very low speed corresponding to the idle speed.

(Effects of the Invention) As described above, according to the present invention, an idling switch that can be operated from the driver's seat is provided, and by turning on the idling switch, the engine can be idled without depressing the accelerator pedal. Since it is possible to run the vehicle at a very slow speed equivalent to the number of revolutions, it solves the problem that conventional slow speed driving would result in excessive vehicle speed, making stable slow speed driving extremely difficult, and enables stable slow speed driving. There is an effect.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a schematic configuration diagram of an automatic transmission of a gear transmission, Fig. 2 is a block diagram of the configuration of the control unit in Fig. 1, and Fig. 3 is a block diagram of the control unit in Fig. 2. CP of
A flowchart diagram showing a control program in U,
Figure 4 is an automatic transmission diagram stored in advance in the CPU;
The figure is a shift direction diagram showing the shift direction and select direction.
The figure is a schematic diagram illustrating the configuration of a conventional automatic transmission device of a gear transmission. E...Engine 1...Gear transmission 2...
・Vehicle speed sensor 3...Accelerator opening sensor 4...Accelerator switch 5...Control unit 5e...CPU6
...Shift actuator 7...Select actuator 8...Clutch actuator 9...Engine rotation sensor 10...Throttle actuator 11...Select lever 12...Idle running switch 13...Place key switch, switch Patent applicant: Aichi Kikai Kogyo Co., Ltd. Agent: Patent attorney Yoshihisa Shimizu Figure 4, 24R Ireg) Meiran Figure 5

Claims (1)

[Claims] A shift actuator that selects a meshing position of a gear transmission based on an output signal of an accelerator opening sensor that detects the amount of depression of an accelerator pedal and an output signal of a vehicle speed sensor that detects vehicle speed, a select actuator, and an engine. In an automatic transmission device for a gear transmission, which is equipped with a control unit that outputs a drive signal to a clutch actuator interposed between the gear transmission, the clutch actuator is connected to the control unit and forcibly operates the clutch without pressing an accelerator pedal. An automatic transmission device for a gear transmission, characterized in that an idle running switch is provided in the driver's seat for connecting the engine to drive at a slow speed by idling the engine.