JPS608117A - Driving device of starter of vehicle with automatic transmission - Google Patents

Abstract

PURPOSE:To improve the safety of a vehicle on which an electronically controlled transmission by forming a starter circuit only when a selector lever and a transmission actuator are in the neutral position. CONSTITUTION:When a key is inserted in a key switch 22 and turned to an ON position, and a selector lever is shifted to a neutral position, a selector lever neutral switch 70 is turned on. An electronic control circuit 9 detects the on- action and controls a transmission actuator 5 to set a transmission gear 6 into the neutral position, whereby turning an actuator's neutral switch 60 on. Since both the switches 60 and 70 are turned on, a high level signal is generated from an NOR circuit 25a to turn a transistor 24b on so that a relay 23 carries a current to start an engine. Since any start of a vehicle against the driver's intention is prevented, the safety may be improved.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a starter starting device for starting a starter for starting a engine/engine in a vehicle equipped with an automatic transmission, and particularly relates to an electronically controlled automatic transmission. The present invention relates to a starter starting device suitable for a vehicle equipped with a transmission.

(Prior Art) In recent years, automatic transmissions have come to be widely used in vehicles such as automobiles, and electronically controlled transmissions have also been developed. Such an electronically controlled vehicle is of a type in which an electronic control device consisting of a microcombination unit controls a transmission actuator that drives a transmission in response to a selection signal from a selector lever that selects a driving range. . Therefore, since the selector lever and the transmission actuator are not directly connected, the driver's command (selector lever)
There is a time delay between the time when the gear shift operation of the transmission is carried out and the time when the gear change operation of the transmission is performed.

On the other hand, when starting the engine, the driver inserts the key into the keyhole, rotates the key to starter position 1, connects the battery and starter via the key contact, starts the starter, and starts the engine. If the transmission is in a gear other than the neutral gear position when the engine is started, the vehicle may start. To prevent this, conventionally, in vehicles equipped with automatic transmissions, the transmission is bi-unilateral, that is, an interface that allows the starter to start only after detecting that the transmission actuator is in the neutral position. It uses a locking configuration.

(Problems with the prior art) However, in the starter activation device using the conventional starter interlock system, due to the existence of the time delay in the gear shifting operation described above, it is difficult for the driver to shift the selector lever immediately after starting the engine. There is a problem in that the vehicle starts moving unexpectedly, which is extremely dangerous.

For example, if the engine stalls while moving forward or backward when parking in a garage or stopping at 113, and the selector lever is moved to the N position [7] and the engine is restarted, the gear shift actuates. Movement,
There are also situations where the vehicle is 6□, 9, 9, and 9□, such as when the vehicle starts moving.

(Object of the Invention) An object of the present invention is to provide a starter activation device for a vehicle equipped with an automatic transmission that can prevent the vehicle from starting against the driver's will when starting the engine.

(Disclosure of the Invention) In the starter activation device of the present invention, the selector lever is in the neutral position and the transmission actuator is in the neutral position.
A control circuit is provided that detects that the key switch is in the tral position and closes the electric circuit leading to the starter contact of the key switch and the starter. That is, in the present invention, the starter cannot be activated until it is detected that both the selector lever and the transmission are in the neutral position. Therefore, since both the selector lever and the transmission are always in the neutral position when the starter is activated, it is possible to prevent the vehicle from starting against the driver's will immediately after the engine is started.

(Embodiment) Fig. 1 is a block diagram of an embodiment of an automatic transmission system for explaining the present invention. In the figure, 1 is an engine;
It includes a throttle valve for controlling the amount of intake gas (air or mixture) and has a flyhole 1a. 2
6 is a clutch body, which is composed of a well-known friction clutch and has a release lever 2a, and 6 is a clutch actuator υ, whose piston rod 3a controls the engagement amount of the clutch body 2. It is something that is driven. 4 is a hydraulic mechanism, and 5 is a transmission actuator, which will be described later.

6 is a synchronized mesh transmission, and a transmission actuator 5
It is driven by the clutch 2, the input shaft 6a, and the output shaft (
A drive shaft) 6b, and a gear position sensor 6C that detects the gear position (gear position). 7 is a selector lever that is operated by the driver and selects rNJ range (neutral position), 1-D range (automatic shift), 1 range (1st speed), 2nd range (2nd speed), and 3rd range. l/nji (+, 2.
Each range (3-speed automatic shifting) and fnj range (reverse) can be selected by the lever position, and the selection signal SP is sent to the selector sensor 7a without overriding the selected range.
, is output. 8a is a rotation sensor, which detects the rotation speed of the ink shaft 6a;
1) is a vehicle speed sensor that detects the vehicle speed from the rotation speed of the drive shaft 6b; 10 is an engine rotation sensor that detects the rotation speed of the flywheel 1a to detect the rotation speed of the engine 1; It's worthless.

Reference numeral 9 denotes an electronic control device composed of a microcomputer, which includes a processor 9a (!:) that performs arithmetic processing, a read-only memory (ROM) 9b that stores control programs for controlling the transmission 6 and the clutch 6, and an output It is composed of a port 9C, an input port 9d, a random access memory (RAM) 9e for storing calculation results, etc., and an address/data bus (Bus) 9f that connects these.The output port 9c is It is connected to the Clarachi actuator 1, the actuator 3, the hydraulic mechanism 4, and the transmission actuator 5,
Drive signals CDV, PDV, and ADV for driving these are output.

On the other hand, the human power port 9d has various sensors 6c and 7a.

8a, sb, 10, and an accelerator pedal and a brake pedal, which will be described later, and receive detection signals thereof.

11 is an accelerator pedal, and a sensor 11a (potentiometer) detects the amount of depression of the accelerator pedal 11.
12 is a brake pedal, and has a sensor +2a (potentiometer) for detecting the amount of depression of the brake pedal 12.

Figure 2 shows the aforementioned clutch, transmission actuator, gearboxes 3 and 5.
, is a configuration diagram of the hydraulic mechanism 4, in which 1 is a tank, P
is a hydraulic pump, Vl is an on-off valve, and these constitute a hydraulic mechanism 4.

The clutch actuator 3 consists of a cylinder 33, a piston 31, and a piston rod 51a (3a) whose one end is connected to the piston 61 and the other end is connected to the release lever 2a of the clutch 2, and the chamber 6a can be opened and closed. Valve Vz is connected to pump P (via on-off valve ■1) j11, and on-off valve ■3 and pulse-controlled on-off valve V4
It communicates with tank T via. In addition, the chamber 33b is piped so as to always communicate with the tank T side. Note that 34 is a position sensor that detects the position of the piston rod 31a and outputs the engagement period of the clutch 2.

Therefore, when the on-off valve 2 is opened by the drive signal CDV1, hydraulic pressure is applied to the chamber 33a, the piston 61 moves to the right, the clutch is turned off, and the drive signal CDV2.
When CDV3 opens on-off valve V31 V4, chamber 3
3a is released, the piston 31 moves to the left,
Turn on clutch 2. Open/close valve ■4 is uH dynamic signal CDV
3, the clutch 2 is gradually turned on (closed).

The transmission actuator 5 is composed of a select actuator 50 and a shifted actuator 55. The select and shift actuators 50 and 55 are configured to be able to stop at 6 positions 9, and the stepped cylinders 53 and 58, the first pistons 51 and 56, and the first The rods 51a and 56a of the first piston and the cylindrical second pistons 52 and 57 that fit into the piston are engaged with an intertool lever of a transmission (not shown). Both actuators 50 and 55 have respective chambers 53a, 55b and 58a of their stepped cylinders 53 and 58.
When hydraulic pressure acts on chambers 53a and 58a, the first pistons 51 and 56 are in the neutral state shown in the figure, and when hydraulic pressure acts on chambers 53a and 58a, respectively, the first pistons 51 and 56 are in the neutral state shown in FIG.
7 to the right in the figure, and each chamber 55
b and 581), the first piston 5
Only 1 and 56 are oriented to move to the left in the figure.

Chambers S+a and 53 of the select actuator 50
b indicates flow path switching valves ■5 and ■. are connected to the pump P (via the on-off valve 1) or the tank T, respectively.

Further, the shift actuator 55 also has chambers 58a and 5.
8b is the pump P(
) or to tank III, respectively.

Therefore, in the state shown in the figure, the transmission 6 is in a neutral state, and the drive signal ADV4 switches the flow path switching valve v7 to the pump P.
On the other hand, when the flow path cutoff valve (8) is communicated with the tank 'r side in accordance with the drive signal ADVI1, the speed change j is changed in four consecutive directions.

When there is a shift signal from the 4th speed state to the 5th speed, first, the drive signal ADV and AI) V4 connect the flow path switching valves ① and ② to the pump P side. Return the actuator 55 to the neutral state shown. Next, the drive signal ADV1 moves the flow path switching valve ■6 to the pump P side.
The drive signal ADV connects the multi-flow path switching valve v6 to the tank T side, and operates the select actuator 50 to the 5th speed-reverse select position. Next, the drive signal ADVs connects the multi-channel switching valve 8 to the pump P side, the drive signal ADV4 connects the multi-channel switching valve 7 to the tank T side, and the shift actuator 55 is operated to the fifth speed position. Shift the transmission to 5th gear.

ko cD yo'511V, moving signal ADV1. ADVJ O
ADv8. Flow path switching valves V, , V, and V by ADv4
.

Next, the operation of the groove formation shown in FIG. 1 will be explained.

■ First, selector lever 7 is operated to rDJ range,
When the selection signal SP for the "D" range is input from the position sensor 7a (input capo) 9d, the processor 9a
f, stores it in the RAM 9e, outputs the 1st drive signal ADV to the transmission actuator 5 from the output boat 9C, drives the transmission actuator 5, and sets the transmission to 1st drive.
speed up.

(2) The processor 9a receives the output of the gear position sensor 6C via the input capacitor 9d, detects that the gear has been shifted to 1st speed, and stores it as the current gear position 1゛C8.

0 Next, the processor 9a outputs a clutch strike 1 signal ("l)
V is sent to the clutch actuator through the output port 9C, and the clutch actuator 3 gradually moves the screw tonnage rod 3a to the left, and the release lever 2a gradually moves to the left. As a result, the engagement amount of the clutch 2 changes as shown in a in Fig. 4,
The clutch 2 changes from a disengaged state to a half-clutch state and then to an engaged state. This causes the vehicle to start.

After that, the processor 9a receives the detection signal (detection pulse) WP from the vehicle speed sensor 8b periodically from the vehicle speed sensor 9d, calculates the vehicle speed V, and stores it in the RAM 9e.
It also receives the depression amount AP of the accelerator pedal 11 from the sensor 11a via the input capo 9d and stores it in the RAM 9e, and corresponds to the vehicle speed SPD and depression amount AP stored as part of the program in the ROM 9b. Change the gear according to the shift map.

That is, as shown in FIG. 3, a shift map corresponding to the vehicle speed and the amount of depression is stored in the ROM 9b as a table. In the figure, I, II, Ill, IV, and V represent each gear stage, the solid line is the boundary line between the gear stages at the time of shift amplifier, and the dotted line is the boundary line between the gear stages at the time of downshifting. Then, the gear position is determined from the amount of depression and the vehicle speed, and compared with the currently selected gear position N and TC8 stored in RAM9e. If they are the same, the drive signal ADV is not issued, and if they are different, the drive signal ADV is requested. The processor 9a sends the drive signals A and DV that change the gear to BU.
S9f, sends to 7 transmission actuator 5 via output port 9C.

As a result, the transmission actuator 5 is connected to the above-mentioned hydraulic mechanism 4, and the built-in select and shift actuators 50, 55 are hydraulically controlled to operate the transmission 6 and bring it into synchronous mesh at a desired gear position. At the same time, during the shift operation, clutch control, which will be described later, is performed, and an automatic shift operation is executed.

(2) When this shift is performed, the selected gear is detected by the gear position sensor 6C, and is notified to the processor 9a via the input port 9(l), and is stored in the RAM 9e as the current gear position FTC8.

■On the other hand, the clutch is controlled during the above-mentioned shift operation, starting, and stopping, and during the above-mentioned shift operation, the processor 9a sends the clutch drive signal CDV to the clutch actuator 3 via the output port 9C prior to the shift operation. Okay, the chamber 33 of the cylinder 33 of the clutch actuator 3
By applying hydraulic pressure to a, the piston rod xa (
31a) is returned to the right, the release lever 2a is returned to the right, and the clutch is gradually disengaged as shown in FIG. 4B. Next, at the end of the gear shifting operation, the processor 9a sends the clutch drive signal CDV to the clutch actuator 6, as at the time of starting, to close the clutch. Further, the processor 9a periodically inputs the selection signal SP to the input port 9d.
Detected from other ranges rIJ, r2J, r3j.

When rNJ and rRj are selected by the selector lever 7, the selection signal SP is sent to the processor 9 via the input port 9d.
a stores this selection signal SP in 1tAM9e, and outputs a drive signal ADV so that the transmission 6 is controlled to the designated gear position in the same way as the automatic gear shift operation described above.
9c to drive the transmission actuator 5;
The transmission 6 is brought to a designated gear position, and the clutch 2 is controlled as described above.

In a vehicle equipped with such an automatic transmission, the following starter starting device is provided in the present invention.

FIG. 5 is a configuration diagram of one embodiment of the present invention, in which the same parts as in FIG. 1 are indicated by the same symbols, 20 is a battery, 21 is a scooter, and the engine is started Reference numeral 22 is a key switch, which allows selection of an on contact or a starter contact by inserting and rotating a key. 23 is a relay, which has an excitation coil 23b connected to the ON contact of the key switch 22; a contact 23a connected to the starter contact of the key switch 22; 24;
is a relay control circuit, and includes a N0R (NOT OR) circuit 24a, a transistor 24b, and resistors R+ and R2. 6o is an actuator knee switch, which is installed in the gear position sensor 6C and activates the transmission. A device that mechanically detects that the selector lever 5 is in the neutral position, 70 is a selector lever 1211 torque switch, which is provided on the selector lever 7a and detects that the selector lever 7 is in the neutral position. .

Next, to explain the operation of the configuration shown in FIG. 5, when the key is inserted into the key switch 22, it rotates at the on contact point 1, and the selector lever 7 is operated to the bi-tral position, the select lever neutral switch is set to turns on,
The electronic control circuit 9 in FIG. 1 detects this and controls the transmission actuator 5 to set the transmission 6 to neutral. This transmission actuator 5 moves to the neutral position, and the actuator neutral switch 6o is turned on. When both neutral switches 60 and 70 are turned on, both input sides of the NOR circuit 24a, which are at high level due to the potential applied by resistors R1 and R2, become low level. Therefore, since a high level signal is output from the NOR circuit 24a, the transistor 24b is turned on.

The current route from battery 20 to key switch 22 to excitation coil 23b of relay 23 to transistor 24b to ground is closed, and current flows through the excitation coil of relay 23.

Therefore, the contact 23a of the relay 23 is closed, and the electric circuit between the starter contact of the key switch 22 and the starter 21 is closed, and an engine starting system (that is, a starter starting system) is established.

When the key switch 22 is operated to the starter position in this state, the batch IJ-20 is connected to the starter 21 via the key switch 22, the scooter 21 is started, and the engine is driven.

Therefore, both or either neutral switch 60
．． 70 is not on, the NOR circuit 24
Since the output of a does not reach a high level, transistor 2
4b is not turned on, so the scooter 21 does not start.

In this embodiment, the level of the input to the input port 9d of the electronic FttlJ control circuit 9 is used, and this can be realized by connecting the relay control circuit 24 and the relay 23 to this, but the level of the input to the input port 9d of the electronic FttlJ control circuit 9 is used. It may also be part of an electrical circuit.

FIG. 6 is a block diagram of another embodiment of the present invention, in which the same parts as in FIG. 5 are designated by the same symbols 1. I'm looking forward to it. In this embodiment, the relay control circuit 24 is not provided as shown in FIG. 5, and both neutral switches 60 and 70 are connected to the relay 2.
It is connected in series to the other end of the excitation coil 23b of No. 3,
It constitutes a kind of relay control circuit.

Therefore, only when both neutral switches 60 and 70 are on, current flows through the excitation coil 23b of the relay 26, the contact 23a of the relay 23 is closed, and the electric circuit between the starter contact of the key switch 22 and the starter 210 is closed. It is closed and the starter activation system is established.

(Effects of the Invention) As explained above, according to the present invention, in a vehicle equipped with an automatic transmission, the starter of the key switch is activated on the condition that the selector lever and the transmission actuator are detected to be in the neutral position. Since a control circuit is provided that closes the electrical circuit from the contacts to the starter, the starter will not start unless both the selector lever and transmission actuator are in the neutral position when starting the starter, so operate the selector lever when starting the starter. This has the effect that the vehicle will not start against the driver's will even if the driver does not. Therefore, dogs are responsible for preventing danger when starting the engine and helping the vehicle run safely.

It should be noted that although the present BJ] has been described by way of examples, various modifications can be made within the scope of the gist of the present invention, and this does not exclude Jl et al. from the scope of the present invention.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of an automatic transmission system for explaining the present invention, FIG. 2 is a block diagram of main parts in the configuration of FIG. 1, and FIG. 3 is an explanatory diagram of a shift map in the configuration of FIG. 1. FIG. 4 is an explanatory diagram of the clutch operation in the configuration shown in FIG. 1, FIG. 5 is a diagram showing the configuration of one embodiment according to the present invention, and FIG. In the diagram, 1...engine, 5...transmission actuated. Eta, 6...Transmission, 6c...Gear position sensor, 7
...Selector lever, 7a...Selector shift-
19... Electronic control unit, 60... Actuator neutral switch, 70... Selector lever neutral switch, 21... Starter, 22... Key switch, 23... Relay. Figure 3 Figure 4 About - Day 5 of Tomorrow 0

Claims (1)

[Scope of Claims] (In a starter activation device for an automatic transmission vehicle in which an electronic control unit drives a transmission actuator based on the operation of a reselect lever to perform a clutch operation, the selector lever is in a neutral position. An automatic transmission comprising a control circuit that closes an electric circuit from a starter contact of a key switch to a starter on condition that the transmission actuator is in a neutral position and that the transmission actuator is in a neutral position. Starter activation device for a tower-mounted vehicle. (2) The automatic transmission according to claim 1, wherein the control circuit includes a relay, and the electrical circuit is made quiet by a contact point of the relay. A starter starting device for a tower-mounted vehicle. (3) The automatic transmission tower-mounted automatic transmission according to claim (2), wherein one end of the excitation coil of the relay is connected to an on contact of the key switch. A starter activation device for a vehicle. (4) The control circuit includes a relay control circuit connected to the other end of the excitation coil of the relay, and the relay control circuit activates the excitation in response to detection of both neutral positions. A starter activation device for an automatic transmission vehicle according to claim (3), further comprising a transistor for controlling energization of a coil. 3. A starter starting device for an automatic transmission vehicle as set forth in claim 3, wherein the other end of said excitation coil is connected in series to a switch for detecting a neutral position.