KR20050051393A - Tip in controlling method during static shift and apparatus thereof - Google Patents

Abstract

The present invention is to improve the engine response response and shift shock by controlling the engine torque required during the static shift, a signal input step (ST10) for inputting a signal that detects the state of the tip during N → D, N → R shift A shift determination step (ST20) for determining whether the shift is N → D, N → R according to the signal input step, and when the shift is determined as the shift by the shift determination step, the shift control section is at the highest point of the transmission coupling side duty. Idle determination step (ST30) for determining whether the section (A, B) to be lowered and the middle (C) of the section in which the duty is lowered, if the judgment of the idle determination step is satisfied, the engine torque is controlled by the idle torque A first judgment step ST50 for determining whether the idle control step ST40, the idle control step following the idle control step is a section D that continues to be lowered after the step C, and the determination of the first judgment step just When the first control step (ST60) for controlling the engine required torque to the first torque (Tq1), and after the first control step to determine whether the shift control section is the section (E) of the same height as the section B In the second determination step ST70, when the determination of the second determination step is satisfied, the second control step ST80 of controlling the engine required torque to the second torque Tq2, followed by N → D, N → a shift end determination step (ST90) for determining whether or not the end of the R shift is satisfied, and a torque increase step (ST100) for increasing the second torque (Tq2) for a predetermined time (Tms) when the determination of the shift end determination step is satisfied. It is.

Description

Tip control method during static shifting and its control device {TIP IN CONTROLLING METHOD DURING STATIC SHIFT AND APPARATUS THEREOF}

The present invention relates to a method for controlling a tip during static shifting and a control apparatus thereof, and more particularly, to a method for controlling a tip during static shifting and minimizing responsiveness of an engine during static shifting and improving shifting shock and a control device therefor. .

In general, a large shift shock is generated due to an increase in engine torque because only the hydraulic pressure of the coupling side clutch of the automatic transmission is controlled even when the tip is a static shift.

1 is a tip control pattern during the ND shift, the engine speed is increased by the duty control of the operating hydraulic pressure of the coupling clutch at the time of N → D shift, and when the shift is completed, the turbine speed (Nt) is lowered to generate a shift shock It is showing.

Basically, shift control during shifting in an automatic transmission is difficult. In particular, the control of the Excel tip during static shifting is affected by engine torque of various sizes, the timing of the rise of the engine torque during the shift control, and the deviation of the automatic transmission.

Therefore, it is difficult to improve the tip-in control during static shifting only by the clutch control of the engagement side of the automatic transmission.

After all, this automatic transmission performs the throttle position sensor (TPS) control corresponding to the Excel position sensor (APS) regardless of the shift preparation state, so when operating the Excel during the shift control preparation, a very high engine speed rise and When the shift is completed, a shift shock is generated.

In the control of the tip during the static shift, the engine speed increase and the shift shock generated are difficult to solve without the control of the input torque.

Therefore, the present invention is to solve the above problems, an object of the present invention is to control the engine required torque during the static shifting control method and a control device that is a tip during static shifting to improve the response and shifting shock of the engine To provide.

In the static shifting control method according to the present invention, a signal input step of inputting a signal detecting a state of the tip during N → D, N → R shift,

A shift determination step of determining whether the shift is N → D, N → R by the signal input step;

If it is determined that the shift is made by the shift determination step, it is determined whether the shift control section is a section A, B declining from the highest point of the transmission coupling side duty and a middle section of the section in which the duty is lowered in this section. Judging children,

An idle control step of controlling the engine torque to an idle torque when the judgment of the idle determination step is satisfied;

A first determination step of determining whether the shift control section is a section D continuously lowering after the idle control step;

A first control step of controlling the engine required torque to the first torque Tq1 when the determination of the first determination step is satisfied;

A second determination step of determining whether the shift control section is the section E having the same height as the section B after the first control step;

A second control step of controlling the engine required torque to the second torque Tq2 when the determination of the second determination step is satisfied;

A shift end determination step of determining whether the shift is completed from N to D and N to R following the second control step; and

And a torque increasing step of increasing the second torque Tq2 for a predetermined time Tms when the determination of the shift end determination step is satisfied.

In the signal input step, signals of the control sections A and B of the N → D and N → R shifts are input from the transmission side, and a signal having a transmission speed of 30 rpm or less is input.

In the idle control step, when the shift control sections are A, B, and C, the engine demand torque is maintained at the idle torque even if the detection signal of the Excel position sensor is greater than or equal to a predetermined value.

The torque increasing step increases the second torque Tq2 for 300 ms to output the calculated requested torque and performs normal torque control.

In addition, the control device of the tip of the static shift of the present invention, rpm sensor, throttle position sensor, Excel position sensor,

ECU for controlling the ETS motor by using the signal of the Excel position sensor and confirming the throttle opening degree as the signal of the throttle position sensor,

Inhibit switch, and

The control unit performs shift control and shift control using signals of the Excel position sensor and the inhibit switch, and includes a TCU for sharing various information using serial communication with the ECU.

Advantages and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

2 is a flowchart of a control method that is a tip during static shifting according to the present invention, and transmits the shift control step of the TCU to the ECU during N → D and N → R shifting, and the ECU checks the control state of the TCU to obtain an engine required torque. , As shown in the control pattern diagram shown in FIG. 3.

As shown in FIG. 4, a control device for realizing such a control method includes an rpm sensor 1, a throttle position sensor 3 and a TPS, an Excel position sensor 5 and an APS, and an ECU 7 to which they are connected. Inhibit switch 9, the inhibit switch 9, and the Excel position sensor 5 are connected to each other, and the TCU 11 is configured to share various information by serial communication with the ECU 7.

The rpm sensor 1, the throttle position sensor 3, the Excel position sensor 5, and the inhibit switch 9 act in the same way as the conventional one on the engine and the transmission side.

The ECU 7 is equipped with an ETC (Electric Throttle System) control module to control the motor 15 of the throttle valve 13 for controlling the amount of air flowing into the engine 12 using the signal of the Excel position sensor 5. Then, the opening degree of the throttle valve 13 controlled in this way is comprised so that the detection signal of the throttle position sensor 3 can be confirmed.

The TCU 11 is configured to control the shift pattern and perform the shift control by using the signals of the Excel position sensor 5 and the inhibit switch 9.

The shift control method, which is a tip during the static shift using the control device configured as described above, proceeds from the signal input step ST10. In this signal input step ST10, a signal is detected by the sensors to the tip of the N → D, N → R shift is input to the TCU (11) and the ECU (7).

In this signal input step ST10, respective signals are input to the transmission side and the engine side. That is, on the transmission side, signals of the control sections A and B for the N → D and N → R shifts are input, and a signal having a transmission speed of 30 rpm or less is input.

As shown in FIG. 3, the shift control sections A and B mean sections that are raised to the highest point of the transmission coupling side duty and then lowered. When the static N → D and N → R shifts, it instantly applies high hydraulic pressure to the coupling side clutch of the transmission, and then applies low pressure hydraulic pressure. Is showing. In addition, this shift control section A is a section in which the sensing voltage of the Excel position sensor 5 rises rapidly by the action of the tip during the static shift.

Following the signal input step ST10, the shift determination step ST20 proceeds. This shift determination step ST20 determines whether N → D, N → R static shifts are performed based on the detection signal of the inhibit switch 9 in the signal input step ST10.

The idle determination step ST30 is followed by the shift determination step ST20. In the idle determination step ST30, when it is determined that N → D, N → R static shift is performed in the shift determination step ST20, it is determined whether the shift control sections are A, B, and C. This shift control section C reaches a range from the section B to the middle of the section in which the duty is lowered. The shift control sections A, B, and C determine whether the tip is in the static shift.

The idle control step ST40 is followed by the idle determination step ST30. The idle control step ST40 maintains the required torque of the engine at the idle torque when it is determined as idle in the determination step ST30.

At this time, even if the detected voltage of the Excel position sensor 5 exceeds the predetermined value, that is, 0.6 V in the shift control sections A, B, and C, unlike the conventional method (a), the ECU 7 adjusts the required torque of the engine to the idle torque ( b). Conventionally (a), when the sensed voltage of the Excel position sensor 5 exceeds 0.6V, the required torque of the engine is raised and controlled.

After the idle control step ST40, the first determination step ST50 proceeds. The first determination step ST50 determines whether the shift control section is a D section that is continuously lowered after the C.

When the shift control section is determined as D in the first determination step ST50, the first torque control step ST60 is performed.

This first torque control step ST60 controls the engine demand torque with the first torque Tq1 calculated in the shift control section D. FIG. This first torque Tq1 corresponds to about 15% of the target torque.

Following the first torque control step ST60, the second determination step ST70 proceeds. The second determination step ST70 determines whether the shift control section is the E section at the same height as the section B after the section D in the first control step ST60.

 When it is determined that the shift control section is E in the second determination step ST70, the second torque control step ST80 is performed.

 This second torque control step ST80 controls the engine required torque with the second torque Tq2 calculated in the shift control section E. FIG. This second torque Tq2 corresponds to about 30% of the target torque.

Following the second torque control step ST80, the shift end determination step ST90 proceeds. This shift end determination step ST90 determines whether N → D or N → R shift end state is performed after the second torque control step ST80.

When it is determined that the shift is completed in the shift type determination step ST90, the torque increasing step ST100 is performed.

The torque increasing step ST100 increases the second torque Tq2 for a predetermined time Tms after the shift is completed. The second torque Tq2 is increased for about 300 ms to output the calculated requested torque, and then normal torque control is performed.

The engine torque control as described above is achieved by the ECU 7 controlling the opening degree of the throttle valve 13 to increase the amount of air flowing into the engine 12.

In addition, the shift control sections A, B, C, D, and E are transmitted from the TCU 11 to the ECU 7 in the above.

As described above, the present invention can control the throttle valve by calculating the required torque of the engine in the ECU according to the shift control section transmitted from the TCU during the tip during the static shift, thereby improving the engine responsiveness and shifting shock.

1 is a control pattern diagram of the tip during the N-D shift in accordance with the prior art.

2 is a flow chart of the control method of the tip during the static shift in accordance with the present invention.

Figure 3 is a time control pattern during the tip of the N-D shift in accordance with the present invention.

Figure 4 is a block diagram of a control device that is a tip during the static shift in accordance with the present invention.

Claims (5)

A signal input step of inputting a signal for detecting a tip-in state during N → D and N → R shifts, A shift determination step of determining whether the shift is N → D, N → R by the signal input step; If it is determined that the shift is made by the shift determination step, it is determined whether the shift control section is a section A, B declining from the highest point of the transmission coupling side duty and a middle section of the section in which the duty is lowered in this section. Judging children, An idle control step of controlling the engine torque to an idle torque when the judgment of the idle determination step is satisfied; A first determination step of determining whether the shift control section is a section D continuously lowering after the idle control step; A first control step of controlling the engine required torque to the first torque Tq1 when the determination of the first determination step is satisfied; A second determination step of determining whether the shift control section is the section E having the same height as the section B after the first control step; A second control step of controlling the engine required torque to the second torque Tq2 when the determination of the second determination step is satisfied; A shift end determination step of determining whether the shift is completed from N to D and N to R following the second control step; and And a torque increasing step of increasing a second torque (Tq2) for a predetermined time (Tms) when the determination of the shift end determination step is satisfied. The method according to claim 1, wherein the signal input step, A control method as a tip during a static shift, characterized in that a signal of control sections A and B of N → D, N → R shift is input from the transmission side, and a signal having a transmission speed of 30 rpm or less is input. The method of claim 1, wherein the idle control step, If the shift control section is A, B, C tip control method during the static shift, characterized in that to maintain the engine demand torque to the idle torque even if the detection signal of the Excel position sensor more than a predetermined value. The method according to claim 1, wherein the torque increasing step, A control method which is a tip during static shifting to increase the second torque Tq2 for 300 ms to output the calculated requested torque and to perform normal torque control. rpm sensor, throttle position sensor, excel position sensor, ECU for controlling the ETS motor by using the signal of the Excel position sensor and confirming the throttle opening degree as the signal of the throttle position sensor, Inhibit switch, and A control device that is a tip during static shifting including a TCU that performs shift control and shift control using a signal of the Excel position sensor and an inhibit switch, and shares various information using serial communication with the ECU.