KR100308973B1 - Sudden starts controlling device and method used in automobiles equipped with automatic transmission - Google Patents

Abstract

The present invention relates to a control apparatus and a method of an automatic transmission for a vehicle for preventing rapid start by an external influence of a vehicle equipped with an automatic transmission.

The present invention comprises the steps of receiving a shift signal is applied in response to a change in the operating state of the vehicle; Determining whether the vehicle speed is '0' km / h with respect to the shift signal received in the step; Determining whether the brake is turned off when the vehicle speed is '0' km / h; If the brake is off in the above step, determining that the throttle valve is equal to or less than a predetermined opening degree set arbitrarily, and whether the engine speed is greater than or equal to the predetermined set speed; Outputting a sudden oscillation prevention control signal if the throttle valve and the rotational speed are satisfied at a predetermined condition; In this step, if the vehicle speed is not '0' km / h, the brake switch is in the 'on' state, and the opening ratio and engine speed of the throttle valve do not satisfy any predetermined conditions, the step is to output a sudden start prevention release signal. Characterized in that made.

Description

Rapid start control device and method of automatic transmission vehicle {SUDDEN STARTS CONTROLLING DEVICE AND METHOD USED IN AUTOMOBILES EQUIPPED WITH AUTOMATIC TRANSMISSION}

The present invention relates to a control apparatus and a method of an automatic transmission, and more particularly, to a control apparatus and a method of an automatic transmission for a vehicle for preventing sudden start by external influences of a vehicle equipped with an automatic transmission.

For example, the automatic transmission applied to a vehicle is controlled by the shift control device controlling a plurality of solenoid valves to control hydraulic pressure according to the driving speed of the vehicle, the opening ratio of the throttle valve, and various detection conditions. To make the shift.

In other words, when the driver changes the select lever to the desired shift stage, the manual valve port is changed and the hydraulic pressure supplied from the oil pump is selectively operated according to the duty control of the solenoid valve. Let this be done.

The automatic transmission operated according to this operating principle has a friction element that is deactivated in the operating state when the shift is performed to each target shift stage, and a friction element that is converted from the deactivation state to the operating state. Since the shifting performance of the automatic transmission is determined by the timing of element deactivation and start of operation, the research on the shift control method for improving the shifting performance has been actively conducted.

In the 'N' range in which the vehicle equipped with the automatic transmission is stationary, as shown in FIG. 3, only the first friction element CO and the first one-way clutch F1 are coupled by line pressure. Power is transmitted only to the first half of point A from the point.

On the other hand, when the 'D' range, which is the driving stage, is selected, for example, the first and second friction elements at first speed.

(CO, C1) and the first and second one-way clutches F1 and F2 operate to output the rotation and torque ratios of the input shafts to the output shafts by the gear ratio.

In addition, when the reverse range 'R' range is selected, the first, third, and sixth friction elements C0, C1, and B3 operate to output rotations of the input shaft in the opposite direction to the output shafts. .

As described above, in order for the automatic transmission vehicle to drive, the shift control device senses an engine load and instructs the automatic transmission to generate an appropriate line pressure, and the driving force of the engine is transmitted as the line pressure generated by the instruction is transmitted to each friction element. It is delivered up to the drive wheels.

The automatic transmission vehicle is integrated to delay the ignition time for a predetermined time or temporarily shut off the fuel supply to the engine controller in the shift control device as a means for improving the shifting feeling during shifting in shifting. By performing the control to reduce the torque of the engine, the shifting feeling at the time of shifting is improved.

However, regardless of the driver's intention during start-up and after stop-start or low-speed driving in a vehicle equipped with the automatic transmission, if the engine suddenly starts up due to an external influence or failure, the vehicle starts to start suddenly. There is little apparatus and method to prevent this.

Therefore, an object of the present invention is to cut off the transmission point to the output shaft of the automatic transmission when the engine speed increases rapidly regardless of the driver's intention while the vehicle of the automatic transmission is stopped at the engine starting and after starting or at low speed. In addition, the present invention provides an apparatus for rapidly starting and controlling an automatic transmission vehicle capable of reducing the output torque of the engine to the maximum and a method thereof.

1 is a block diagram of a shift control apparatus of an automatic transmission according to the present invention;

2 is a flowchart illustrating a method for controlling an automatic transmission according to the present invention;

3 is a schematic view of the power train of the automatic transmission.

The present invention for realizing this, the vehicle operating state detection means for detecting the operating state of the vehicle; Compared with the signal detected by the vehicle operation state detection means and the arbitrarily set vehicle operation state detection signals to determine whether the vehicle is in a sudden start state, a predetermined power cut control signal is output and the maximum fuel cutoff and ignition delay request signals are output. Shift control means for outputting; An engine control means for receiving a fuel cutoff and ignition delay request signal output from the shift control means and outputting a fuel cutoff and ignition delay control signal; and controlled by a control signal output from the shift control means and the engine control means It is characterized in that it is provided as a drive means for releasing the engagement of the friction element coupled at the time of forward and reverse, delay the ignition time for a predetermined time, and cut off the fuel supply.

Another embodiment of the present invention for realizing the above object comprises the steps of receiving a shift signal is applied in accordance with the change in the operating state of the vehicle; Determining whether the vehicle speed is '0' km / h with respect to the shift signal received in the step; Determining whether the brake is turned off when the vehicle speed is '0' km / h; If the brake is off in the above step, determining that the throttle valve is equal to or less than a predetermined opening degree set arbitrarily, and whether the engine speed is greater than or equal to the predetermined set speed; Outputting a sudden oscillation prevention control signal if the throttle valve and the rotational speed are satisfied at a predetermined condition; In this step, if the vehicle speed is not '0' km / h, the brake switch is in the 'on' state, and the opening ratio and engine speed of the throttle valve do not satisfy any predetermined conditions, the step is to output a sudden start prevention release signal. Characterized in that made.

Therefore, according to the present invention, when the engine starts, starts, and stops after driving the vehicle, the shift signal, the vehicle speed, the brake, the throttle opening degree, and the rotational speed are detected. By outputting the prevention signal, the sudden start of driving is controlled regardless of the driver's will.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can realize the above object will be described in detail.

1 is a block diagram of a control device of an automatic transmission for a vehicle according to the present invention, wherein the vehicle state change detection device 10 includes a shift lever position detecting unit 11, a throttle opening degree detecting unit 12, a vehicle speed detecting unit 13, The engine speed detection unit 14, the accelerator pedal opening degree detection unit 15, and the brake switch state detection unit 16 are provided to detect a variable signal each time the state of the vehicle changes.

The shift control apparatus 20 determines whether the vehicle is in a sudden start state by receiving a signal applied from the vehicle state change detection device 10, and releases the engagement of the friction elements coupled at the forward and backward directions to prevent the vehicle from suddenly starting. And a control signal for outputting the ignition delay request signal and the fuel supply cutoff request signal for reducing the torque of the engine to a minimum for a predetermined time.

The engine controller 30 controls the ignition timing and the fuel supply state by receiving an ignition delay request signal and a fuel supply cutoff request signal output from the shift controller 20 to reduce the engine torque to a minimum for a predetermined time. A predetermined control signal for outputting is output.

The driving device 40 is controlled by the friction element coupling release signal output from the shift control device 20 to release the engagement state of the friction element coupled to the battery and the reverse, and the engine control device 30 Is controlled by an ignition timing and a fuel supply state control signal outputted from the power supply), and includes a spark plug 42 for delaying ignition and a fuel pump 43 for shutting off fuel supply in order to minimize engine torque for a predetermined time. It is.

A quick start control method of the automatic transmission vehicle having the above configuration will be described with reference to FIG. 2.

When the vehicle is started, the shift control apparatus 20 detects and inputs a signal for the current shift state through the shift lever position detection unit 11, which is the vehicle operation state detection apparatus 10 (step S110).

Subsequently, the shift control apparatus 20 controls the vehicle speed detection unit 13, which is the vehicle operation state detection device 10, to detect the vehicle speed of the current vehicle, and the detected vehicle speed V does not move the vehicle. It is determined whether the km / h is applied (S120).

In this case, if the vehicle speed is '0' km / h in which the vehicle does not move, the shift control apparatus

In operation 20, the brake switch detection unit 16 is controlled to determine whether the brake is turned off (S130).

Subsequently, when the brake is in an off state, that is, when the brake is not operated, the shift control apparatus 20 controls the throttle opening degree detecting unit 12 and the engine speed detecting unit 14 to control the throttle opening degree TH and the engine speed. (Ne) is detected, that is, the current vehicle speed is '0' km / h, the throttle opening degree (TH) detected when the brake is off is less than the arbitrarily set opening rate (β = 5%) Then, it is judged whether or not the engine speed Ne satisfies a predetermined rotation speed (? = 1200 RPM) or more condition (step S140).

Accordingly, the current vehicle has a vehicle speed of '0' km / h, a throttle opening degree TH detected when the brake is off, or less than an arbitrarily set opening rate (β = 5%), and an engine speed.

When (Ne) is a predetermined rotational speed (α = 1200 RPM) or more, the shift control apparatus 20 outputs a sudden start prevention control signal in order to prevent the vehicle from starting suddenly. ) And the driving device 40 (S150).

The sudden start prevention signal outputted above is a friction element coupling release signal for preventing power transmission after the point A of the approximate power train of the automatic transmission shown in FIG. 3 and an ignition delay request for reducing the output torque of the engine. Signal and fuel shutoff request signal.

Therefore, the engine control device 30 receives the sudden start prevention control signal output from the shift control device 20, and a control signal and fuel for delaying the ignition of the engine for a predetermined time in order to reduce the output torque of the engine. Outputs a fuel supply cutoff signal to the driving means 40 to block the supply to the engine.

The drive means 40 is a control signal output from the actuator 41 and the engine control device 30 for controlling the flow of hydraulic pressure for the engagement and release of the automatic transmission friction element by the control signal output from the shift control device 20 It consists of a spark plug 42 whose ignition time is determined by a signal and a fuel pump 43 for supplying and cutting off fuel to the engine.

Therefore, the actuator 41 is controlled by the sudden start prevention control signal output from the shift control device 20 so that the friction element coupled during driving so that power is not transmitted after the point A of the automatic transmission power train shown in FIG. 3. Shut off the supply of hydraulic pressure.

In addition, the ignition plug 42 is delayed for a predetermined time according to the ignition delay signal output from the engine control device 30.

In addition, the fuel pump 43 blocks supply of fuel into the engine according to the fuel supply cutoff signal output from the engine controller 30.

However, in the above process, the current vehicle speed is '0' km / h, the brake is turned off, the detected throttle opening degree TH is arbitrarily set below the opening degree (β = 5%), and the engine speed Ne is arbitrarily selected. If it is determined that any one condition does not satisfy a predetermined rotation speed (α = 1200 RPM) or more, the shift control apparatus 20 determines that the vehicle is in a driving state and outputs a sudden start prevention release signal to the engine controller ( 30 and the driving means 40 (S160).

As a result, the vehicle can be prevented from suddenly starting at the time of starting and after stopping or at low speed driving.

As described above, the apparatus for rapid start and control of the automatic transmission vehicle according to the embodiment of the present invention and the method, when the vehicle is suddenly started by the external influence during the start of the vehicle and after the start or during low-speed driving, to the output shaft of the automatic transmission By interrupting the power transmission and reducing the output torque of the engine, it is possible to provide an effect that can prevent the sudden start of the vehicle in advance.

Claims (4)

Vehicle operating state detecting means for detecting an operating state of the vehicle; It is determined whether the vehicle is in a sudden start state by comparing the signal detected by the vehicle operation state detection means with the arbitrarily set vehicle operation state detection signals, outputting a predetermined power cut control signal according to the determination state, and shutting off the fuel and ignition delay. Shift control means for outputting a request signal; Engine control means for receiving a fuel cutoff and ignition delay request signal output from the shift control means and outputting a fuel cutoff and ignition delay control signal; The driving means is controlled by a control signal output from the shift control means and the engine control means to release engagement of the friction element coupled to the forward and the reverse, delay the ignition time for a predetermined time, and block the fuel supply. Rapid start control device for an automatic transmission vehicle, characterized in that provided. Receiving a shift signal that is varied and applied according to a change in an operation state of the vehicle; Determining whether there is no vehicle speed with respect to the shift signal received in the step; Determining whether the brake is turned off when there is no vehicle speed in the step; If the brake is off in the above step, determining that the throttle valve is equal to or less than a predetermined opening degree set arbitrarily, and whether the engine speed is greater than or equal to the predetermined set speed; Outputting a sudden oscillation prevention control signal if the throttle valve and the rotational speed are satisfied at a predetermined condition; And outputting a sudden start prevention release signal when the vehicle speed is present, the brake switch is in an 'on' state, and the opening degree of the throttle valve and the engine speed do not satisfy any predetermined conditions. Rapid start control method of vehicle. 3. The rapid start control method for an automatic transmission vehicle according to claim 2, wherein the throttle valve opening rate is set at 5%. The method of controlling the rapid start of the automatic transmission vehicle according to claim 2, wherein the predetermined condition of the engine speed is set at 1200 RPM.