JPS6177531A - Emergency operation apparatus for car - Google Patents

Abstract

PURPOSE:To permit the emergency transfer of a car by permitting a starter to drive by operating an emergency operation switch, when engine stop is generated on a railroad crossing. CONSTITUTION:When a switch 106 for emergency operation is closed, a switch signal is input into an electronic controller 13, which processes the signal, and a clutch actuator 3 is operated to cut-off a clutch. It is judged that a selecting lever is at R position or not, and if the selecting lever is at R position, a gear is shifted into R range by the actuator 7 of the transmission, and when the selecting lever is outside the R position, the gear is shifted into the first-stage range, and the clutch is connected after the gear shift operation. A switching element 105 is turned ON on the basis of the above-described switch signal, and a relay switch 103b is closed by the operation of a relay 103, and a starter motor 104 is directly connected to a driving system.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an emergency operation system for a vehicle when the engine of the vehicle stops at a dangerous location such as a railroad crossing.

(Prior art) When a vehicle's engine stops at a dangerous location such as a railroad crossing, 5. In a vehicle equipped with a manual transmission, first disengage the clutch, shift the transmission to a low gear or reverse, then engage the clutch, Start the starter motor,
This force allows emergency evacuation measures to be taken.

Incidentally, in recent years, a so-called automatic transmission device has been proposed that uses an actuator controlled by an electronic control device to automatically control a clutch and a transmission according to the driving state of a vehicle.

In a vehicle equipped with this type of automatic transmission, when the driver performs an engine start operation, the select lever is set to the N position (the transmission is turned off) to prevent the vehicle from moving unexpectedly and causing an unexpected accident. The engine starting operation can only be performed when the vehicle is in the neutral position (position for placing the vehicle in a neutral state), that is, when the drive system from the engine to the drive wheels is shut off by the transmission.

Therefore, for example, while driving with the select lever in the 0 position (automatic shift range), the engine may be turned off at a railroad crossing.

If the engine stops, you will not be able to operate the starter motor if it remains in the select/to/D position.
In addition, when the select lever is set to the N position, the starter motor can be operated, but the transmission will be in a neutral state, so unlike vehicles equipped with the manual transmission, the starter motor is used to operate the vehicle in an emergency. The problem is that the train cannot be started.

On the other hand, in a vehicle equipped with an automatic transmission that is automatically controlled by an electronic control device depending on the driving condition of the vehicle, even if the engine stops due to a failure and cannot be restarted, the A patent application filed by the applicant in 1973 allows for the urgent movement of
8-203239. This connects the excitation coil of the starter relay connected to the key switch to a switching element that is turned on when the select lever provided in the electronic control unit is in the neutral range to form a starter interlock circuit, and connects the starter relay to the select lever. A hold circuit is provided in parallel with the interlock circuit and is activated when the vehicle is in the driving range and the recent switch is turned on, so that the starter relay can be activated when the hold circuit is activated.

(Problem to be Solved by the Invention) However, even if the emergency operation switch that instructs emergency movement of the vehicle by the starter is set, if the select lever is not in the first gear or R position, the emergency operation will not be performed. There wasn't.

Also, when the engine stalls at a railroad crossing, the gear being shifted is 2nd, 3rd, 4th, or 5th gear,
When cranking was performed by the starter, the resistance of the drive system was too great to allow sufficient emergency movement of the vehicle.

Furthermore, when the engine stops as described above, the driver is so upset that he cannot afford to set the select lever to 1st gear or the R position, creating a problem in which the vehicle cannot be moved quickly and easily. 6. The purpose of the present invention was to solve the problems of the prior art, and the present invention is aimed at solving the problems of the conventional technology. When the emergency operation switch is operated, all gears other than the R range position are shifted to the first gear range and the clutch is connected to ensure that the starter moves the vehicle quickly and reliably. The purpose is to provide emergency driving equipment.

(Means for solving the problem) A starter interlock circuit is constructed by connecting the starter relay connected to the key switch to a switching element provided in the electronic control unit and turned on when the select lever is in the neutral range. The system is equipped with an emergency operation switch that is operated during emergency operation, and when the emergency operation switch is operated, the gear is shifted to the R range when the select lever is in the R position, and the gear is shifted to the R range when the select lever is in the R position. In addition to shifting the engine to the first speed range, this configuration also allows the switching element to operate the starter relay.

(Function) 6. When starting by operating the key switch, the switching element is turned off and the engine cannot be started unless the select lever is in the neutral position.

Therefore, the vehicle will not suddenly start moving due to key switch operation.

On the other hand, if the engine stops while driving at a railroad crossing, etc., operate the emergency operation switch to shift the gear to R range or 1st gear range, and even if the selector is in a position other than the neutral position. By enabling the operation of the switching element, it is possible to drive the starter by operating the starter relay, and in conjunction with the engagement operation of the clutch, the vehicle can be moved in an emergency.

(Example) FIG. 3 is a schematic diagram showing a schematic configuration of an engine, a transmission, and a clutch of a vehicle. In the figure, 1 is a gasoline engine, 1a is its throttle actuator, and 1b is a gasoline engine.
is a throttle valve. 2 is a clutch, and 3 is a clutch actuator that operates the clutch. 6 is a parallel shaft gear type transmission, and 7 is a transmission actuator that changes the gear ratio of the transmission 6. 9 is the wheel part! l! lJ
It is a mechanism and includes a propeller shaft, universal joint, etc. 8 is the neutral switch of the transmission. Reference numeral 11 is a select lever for driving operation that switches a select position inch 12, and a signal emitted from this position inch 12 is sent to an electronic control unit 13. Based on this signal, the electronic control unit 13 performs gear change control according to the position of the select lever 11, that is, only 1st speed when in lunge, only 2nd speed when in 2nd range, and only 2nd speed when in 3rd range. Automatic shift operation of 1st, 2nd and 3rd speeds; automatic shift operation of 1st, 2nd, 3rd and 4th speeds when in 4 range; 1st speed when in D range 2nd, 3rd, 4th, and 5th gears are automatically shifted, and when in the R range, the transmission is operated in reverse, and when in the N range, the transmission is placed in neutral. 14 is an accelerator pedal, I5 is a throttle control device, 16 is a potentiometer that detects the amount of depression of the accelerator pedal 14, and 17
is the idling switch. This throttle control device 15 has inside thereof a drive section 15a that drives the throttle 1b and a control section 15b that controls this, and based on the signal from the potentiometer 16, it depends on whether or not the 7xel pedal 14 is depressed. to control the opening degree of the throttle valve 1b. The electronic control device 13 includes a read-only memory 13a that stores necessary data such as a sequence program for controlling engine operation, transmission gear switching control data, and clutch switching I control data, which will be described later, as well as calculation results and input data. A read/write data memory 13b for storing information such as a control program, a control memo 1J13c for storing a control program, a processing device 13d for performing calculations and other data processing under the control of the control program and sequence program, and an input/output interface circuit 13e. have. In this invention,
The electronic control unit 13 not only controls engine control parameters such as fuel supply amount and ignition timing according to the operating conditions, but also controls the clutch and gear change of the transmission. In addition to the franchise switching data, the memory 13a stores detailed data for controlling gear switching of the transmission.

The electronic control device 13 has an input/output interface circuit 13e.
The outputs of the potentiometer 16, position switch 12, and rotation sensor 10 are sequentially imported into the data memory 13b, and the amount of depression of the accelerator pedal 14, the display of the select lever 11, the vehicle speed, and the rotational speed of the engine 1 corresponding to this imported data are stored in the data memory 13b. The processing device 13 determines the optimum gear ratio according to the
d is calculated and determined, the corresponding gear switching control data and clutch switching control data are read out from the read access only memory 13a, and the input/output interface circuit 1
It is output to the transmission actuator 7 and the crunch actuator 3 via 3e. The transmission actuator 7 and clutch actuator 3 are driven by this data, and the transmission 6 and clutch 2 are operated to perform a speed change operation.

The electronic control unit 13 constantly takes in such data, determines the gear ratio, and outputs control data, and always controls the gear ratio of the transmission 6 to be optimal.

FIG. 4 is a hydraulic circuit diagram mainly showing the internal structure of the transmission agecheter and clutch actuator 3 used in an automatic transmission. In the figure, 710 is a select actuator, 720 is a shift actuator, 3 is a clutch actuator, 1 to v, l are on-off valves, 75 to 7 days are flow path switching valves, P is pump, T is tank, 1 to 5, R, N, ~
N5 indicates the gear position, and ON-FF indicates clutch engagement and disengagement.

Said select and shift actuators 710 and 7
20 has a configuration that can be stopped at three positions, and includes stepped cylinders 713 and 723, first pistons 711 and 721, and a cylindrical second piston 712 that fits the first pistons. and 722, and the rods 711a8 and 721a of the first piston are engaged with an internal lever of a transmission (not shown). Both actuators 710 and 720 are in a neutral state when hydraulic pressure is applied to both chambers 713a, 713b and 723a, 723b of stepped sills 713 and 723, respectively, and when hydraulic pressure is applied to chambers 713a and 723a, respectively, the first piston 711 and 721 move to the right in the figure together with second pistons 712 and 722.

Further, when hydraulic pressure is applied to the chambers 713b and 723b, only the first pistons 711 and 721 move to the left in the figure.

The portions 1i7.13a and 713b of the select actuator 710 communicate with the pump P (via the on-off valve V1) or the tank T via flow path switching valves 5 and v6, respectively.

The shift actuator 720 also has chambers 723a and 7.
23b is the pump P (
) or to the tank T, respectively.

The clutch actuator 3 consists of a cylinder 333, a piston 331, and a piston rod 331a, which has one end connected to the piston 331 and the other end connected to a clutch (not shown) for actuation. It communicates with the pump P (via the on-off valve v1) and with the tank T via the pulse-controlled on-off valve v5. The on-off valve V2 is a normally closed type, and the on-off valve V5 is a normally open type valve, which is open when the power is not energized. Therefore, when the power is turned off, the chamber 333a of the clutch actuator 3 is communicated with the tank T, and the clutch actuator 3 is opened. is now being passed down.

Note that the section Ji 333b is piped so as to always communicate with the tank T side.

FIG. 1 shows a control circuit for an emergency driving system for a vehicle according to the present invention, in which 100 is a power source, 101 is a key switch, and a movable contact 101a can be connected to the ignition fixed contact 101b and the start fixed contact 101c. It has become. 103 is a starter relay, 103a is an exciting coil, and 103b is a relay contact. This relay contact 10
3b controls on/off the power supply from the power supply 100 to the starter motor 104. 105 is a switching element provided inside the electronic control device 13 similar to the above,
When a signal is obtained from the position switch 12 (FIG. 3) when the select lever is in the N position, and when the neutral switch rotor a (FIG. 4) of the transmission 6 is on, this switching element 105 In addition to turning on,
The switching element 105 is also turned on when the emergency operation switch described later is activated. Note that the starter contact of the key switch 101, the starter relay 103, and the switching element 105 constitute a starter interlong circuit.

Reference numeral 106 denotes an emergency operation switch linked to the starter switch 101, and its mechanical configuration is shown in an easy-to-understand manner.

This switch 106 is switched by a sliding member 108 that is pushed against a coil spring 107.

Note that this sliding member 108 has a keyhole, and the key 1
Inserting and rotating the key 109 turns on and off the power supply to the conventional ignition circuit and starter circuit, and pressing the key 109 closes the switch 106 and inputs the emergency operation signal of the vehicle to the electronic control unit 13. Based on this emergency operation signal, the electronic control unit 13 changes the gear to the R range when the select lever 11 is in the R position, and in the other positions from 2nd to 5th gear and N , and shift the gears to the first range. In other words, when the key 109 is in the "ON" position on the ignition circuit side, and while pushing it in, turn the rST button on the starter circuit side.
When turned to the J position, an emergency movement function using only the starter is activated, the starter motor 104 rotates, and when the key 109 is released, it automatically returns and the emergency operation switch 106 is opened. It goes without saying that when the gears of the transmission are changed as described above and the emergency movement begins, the electronic control unit 13 switches the clutches and clutches to the connection mode.

The present invention is configured as described above, and its operation will be explained below.

During normal starting, when the select lever 11 is moved to the N position, the switching element 105 is turned on.
3 is operated to start the starter motor 104 and start the engine. If the select lever 11 is in the running position, the switching element 105
is off, so movable contact 1 of key switch lO1
Even if 01a is activated as the fixed contact for starting 01c,
Since starter relay 103 does not operate, starter motor 104 cannot be started. Therefore, when the select lever 11 is in the running position and the transmission is in any gear, the engine cannot be started, which prevents the vehicle from starting unexpectedly. There is.

Next, if the engine stops at a railroad crossing or the like while the vehicle is running and it is impossible to restart it, the select lever 11 is in a running position other than the N position. And in such a situation,
In order to urgently evacuate the vehicle from a railroad crossing, etc., the electronic control unit 13 performs the following steps according to the flowchart shown in FIG.
Start the starter motor 104.

First, (1) confirm that the vehicle is stopped based on the output of the vehicle speed sensor 6a, and (2) confirm that the engine 1 is stopped based on the output of the engine rotation sensor. In other words, check the engine stomp condition. ■Here, insert the key 109 into the keyhole of the sliding member 108, push it further against the spring 107, and press rsTJ.
Rotate to position. Then, the emergency operation switch 106 is closed. ■This switch signal is input to the electronic control device 13, and the electronic control device processes the switch signal.
Activate clutch actuator 3 to disengage clutch 2.

Also, it is determined whether or not the selector lever 811 is in the R position, and if it is in the R position, the gear is shifted to the R range by the transmission actuator 7, and if it is in a position other than the R position, the gear is shifted. Shift to the 1st gear range, and after these gear shift operations, shift to the 1st gear range. ■Also,
Based on the above switch signal, the switching element 105
is turned on, and the excitation coil 103 of the starter relay 103
a is energized, and the relay switch 103b is closed. Therefore, the starter motor 104 and the drive system are directly connected.

In this way, driving force of the starter 104 gives the vehicle running power, and the vehicle can be moved from the railroad crossing to a safe location even though the engine is stopped.

On the other hand, during emergency operation of the starter, if the engine 1 starts, the clutch 2 is disconnected,
Keep the gear in R or 1st gear.

Note that if the engine 1 does not start, turn on the (D emergency operation switch 106 again).

In addition, in (2), when the flange 2 is disconnected, it is determined whether or not the emergency operation switch 106 is off again in [phase] (if φ is off, the switching element 105 is returned to off, and the relay switch 103b is turned off, and the starter and drive system are separated. (2) Therefore, after this, the normal electronically controlled driving condition returns, and it becomes possible to change gears as instructed by the select lever 11.

Note that if the emergency operation switch 106 is built into a conventional key switch, operability will be improved, but both swings may be separately provided in close proximity to each other at a position where this operability will not be significantly deteriorated. Also.

By attaching a caution plate near the key switch, even if the driver wants to cross the vehicle, he or she can be notified that the emergency operation device is installed when starting the engine. In addition, the above emergency operation switch 1
When operating 06, a warning lamp and buzzer can be activated for confirmation.

(Effects of the Invention) According to the present invention, the starter relay 103 connected to the key switch is connected to the switching element provided in the electronic control device and turned on when the select lever is in the neutral range, and the starter interlock is activated. When the emergency operation switch is operated, the switching element shifts the gear to the R range when the select lever is in the R position, and shifts the gear to the first range when the select lever is in a position other than the R position. By enabling the activation of the starter relay, if the vehicle enters a dangerous area such as a railroad crossing and the engine stops, it is possible to make emergency movement of the vehicle possible by driving the starter with the battery.

[Brief explanation of the drawing]

FIG. 1 is a system block diagram of an emergency driving device for a vehicle according to the present invention, FIG. 2 is a flowchart of emergency movement control,
FIG. 3 is a system block diagram showing an outline of the automatic transmission, and FIG. 4 is a diagram showing an actuator and a hydraulic circuit used in the automatic transmission. 1-111 engine, 2-111 clutch, 6----
Transmission, 11--Select lever, 13--Electronic control device, l O0----/Herateri, 101
----Key switch, l O3---Starter relay, 104---Starter motor, l O5---Switching element, 106---Emergency operation switch. Figure 1

Claims (1)

[Claims] An emergency operation switch is provided, and when the emergency operation switch is operated, when the select lever is in the R position, the gear is shifted to the R range, and when it is in a position other than R, the gear is shifted to the first gear range, and the electronic control An emergency operation device for a vehicle, characterized in that the device can operate a starter.