• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A method of controlling engine torque of an automatic transmission is provided to increase shift control degrees of freedom, improve shift quality, and prevent sudden acceleration or sudden start shock during shifting, and prevent breakage of a clutch friction material. CONSTITUTION: A method of controlling engine torque of an automatic transmission includes steps of deciding whether a vehicle meets a stop shift control condition(S102); deciding whether a gear level selection by a shift lever is detected(S103,S104); detecting the opening degree of a throttle valve and engine RPM(Revolutions Per Minute), and outputting an engine torque control value from a map table of the pertinent gear level(S105,S106); and performing engine torque reduction control by adjusting fuel quantity and injection time, with the output engine torque control value(S107). Thus, engine torque control of each gear level is performed according to the opening degree of the throttle valve and engine RPM.
    公开号:KR20030044094A
    申请号:KR1020010074443
    申请日:2001-11-28
    公开日:2003-06-09
    发明作者:김정철
    申请人:현대자동차주식회사；
    IPC主号:
    专利说明:

    TECHNICAL FOR ENGINE TORQUE REDUCTION CONTROLLING IN AUTOMATIC TRANSMISSION}
    [3] The present invention relates to an automatic transmission, and more particularly, to an automatic transmission in which engine torque control is performed according to an opening ratio of an throttle valve and an engine speed for each shift stage when shifting by a shift lever in a stopped state of a vehicle. It relates to an engine torque control method.
    [4] When the driver selects the shift lever as the desired shift stage position, the automatic transmission mounted on the vehicle makes manual port changeover of the manual valve, and the hydraulic pressure supplied from the oil pump forms a line pressure to engage the selected shift stage. According to the shift stage selected by the shift lever as described above, the shift control device is a hydraulic duty through a plurality of solenoid valves according to the traveling speed, the opening degree of the throttle valve, and various conditions of the vehicle. By controlling various operating elements of the transmission gear mechanism by the control, the shift to the target shift stage is automatically performed, thereby providing convenience of operation.
    [5] In the conventional automatic transmission as described above, the shift stage selection by the shift lever, that is, the shift stage selection from N → D, N → R, D → R, R → D, D → N, R → N, etc. In the hydraulic control of the solenoid valve, the hydraulic control is performed as a secondary response to the engine torque as an input element to maintain the stability of the shift feeling, but this has the disadvantage of having a limit in the degree of freedom of control, Many disadvantages arise.
    [6] In addition, when the shift speed is selected by the shift lever and the shift speed of the throttle valve is suddenly changed due to the sudden operation of the accelerator pedal during a shift in which an arbitrary shift stage is engaged, when the engine torque rapidly increases, However, since the fastening of the engagement element is performed rapidly by the relative increase of the line pressure and the duty pressure, the shifting is carried out with a large shift shock, which causes the clutch to be broken by the rapid engagement action of the clutch as the engagement element. Occurs.
    [7] The present invention has been invented to solve the above problems, the object of which is the engine torque for each shift stage according to the engine speed and the opening state of the throttle valve when the shift stage is selected by the shift lever in the stopped state of the vehicle. The control time and the amount of engine torque are configured in each map table to increase the shift control freedom through the stable control of the engine torque when the shift stage is selected by the shift lever in the stop state, and to improve the shifting feeling by eliminating the occurrence of shift shock. It is.
    [1] 1 is a block diagram of a configuration of an engine torque control apparatus for an automatic transmission according to the present invention;
    [2] 2 is a flow diagram of one embodiment for performing engine torque control in an automatic transmission in accordance with the present invention.
    [8] The present invention for realizing the above object is a process of determining whether the vehicle satisfies the stop shift control condition, and if the shift shift control condition is satisfied if the shift stage selection by the shift lever is detected, the shift lever Detecting the gear stage and engine speed by detecting the opening ratio of the throttle valve, and calculating the engine torque control value from the map table set for the shift stage; And adjusting the timing to perform engine torque reduction control.
    [9] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
    [10] As can be seen in Figure 1, the engine torque control apparatus of the automatic transmission according to the present invention includes an inhibitor switch 10, a throttle detector 20, an engine speed detector 30, a vehicle speed detector 40, TCU ( 50, the ECU 60 and the actuator 70, the inhibitor switch 10 detects the position of the shift stage selected by the shift lever and outputs an electrical signal thereto.
    [11] The throttle detector 20 detects a change in the opening degree of a throttle valve which is interlocked according to the driving of the accelerator pedal, and outputs an electrical signal thereto.
    [12] The engine speed detector 30 detects a current engine speed through a rotation speed calculation of the crankshaft and outputs an electrical signal therefor.
    [13] The vehicle speed detector 40 detects the current traveling speed through the calculation of the number of revolutions of the transfer driven gear and outputs an electrical signal therefor.
    [14] The TCU 50 comprises a map table for the engine torque control time and the amount of engine torque at each shift stage engagement according to the engine speed and the opening ratio of the throttle valve for each shift stage selected by the shift lever. When the shift stage selection is detected, the line pressure and the duty pressure are calculated for engagement with the target shift stage, the engine torque control value is calculated from the set map table, and the engine torque control is performed through the ECU 60.
    [15] The ECU 60 calculates the amount of fuel injected into the combustion chamber and the ignition timing according to the engine torque control value applied from the TCU 50, and then performs engine torque control with the calculated value.
    [16] The actuator 70 adjusts the supply of hydraulic pressure so that the shift stage selected by the shift lever can be engaged according to the line pressure and duty pressure control signals applied from the TCU 50.
    [17] In the configuration of the present invention including the function as described above, the operation of performing the engine torque control when the shift stage of the shift lever is selected is as follows.
    [18] In the state of maintaining the engine starting on, the TCU 50 reads the detected state information of the vehicle, that is, the position information of the shift lever and the opening ratio information of the throttle valve, the information of the engine speed, and the vehicle speed information (S101). '0', it is determined whether the opening ratio and the engine speed of the throttle valve is a stop shift condition satisfying the idle state (S102).
    [19] When it is determined that the state information of the vehicle read above satisfies the stop shift condition, it is determined whether the shift stage selection by the shift lever is detected by monitoring the signal of the inhibitor switch 10 (S103) (S104).
    [20] If the shift stage selection of the shift lever is not detected in the above, the current control is maintained continuously, and the shift stage selection of the shift lever, that is, N → D, N → R, D → R, R → D, D → N , R → N, etc. are detected, the line pressure and duty pressure according to the port change of the manual valve is determined and the target gear stage is controlled through the actuator 70, and at the same time, the variation of the throttle valve and the engine speed is detected. Next, the engine torque control value is calculated from the map table set for the selected shift stage, and information about the engine torque control value is applied to the ECU 60 by CAN communication (S105) (S106).
    [21] At this time, the ECU 60 calculates the amount of fuel injected into the combustion chamber and the ignition timing according to the applied engine torque control signal, and then performs the control of the engine torque with the calculated control value (S107).
    [22] Thereafter, as described above, it is determined whether the execution of the control of the engine torque is maintained for a predetermined time or more (S108). End (S109) (S110).
    [23] In the above, the end of the engine torque control is terminated when the engine speed reaches the position of the predicted synchronized turbine speed which has been set.
    [24] As described above, the present invention constitutes a map table for controlling engine torque with respect to a shift stage selected when a shift stage is selected by a shift lever in a stationary state of a vehicle, and an engine speed and an opening ratio of a throttle valve. When the shift stage is detected, the engine torque fluctuation is minimized by using the engine torque control value of the map table, which improves the feeling of shift by increasing the degree of freedom of control, and prevents rapid acceleration, sudden shock, and clutch friction material during shifting. Reliable operation is provided.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] Determining whether the vehicle satisfies the stop shift control condition;
    Determining whether a shift stage selection by the shift lever is detected when the stop shift control condition is satisfied;
    Detecting an opening ratio and an engine speed of the throttle valve when the shift stage selection by the shift lever is detected, and then calculating an engine torque control value from a map table set for the shift stage;
    And adjusting the fuel amount and the injection timing using the calculated engine torque control value to perform engine torque reduction control.
    [2" claim-type="Currently amended] The method of claim 1,
    And a map table for controlling the engine torque is set in the shift control means according to the throttle valve opening ratio and the engine speed for each shift stage selected by the shift lever.
    [3" claim-type="Currently amended] The method of claim 1,
    The stop speed control condition of the vehicle is a vehicle speed of '0', the engine torque control method of the automatic transmission, characterized in that the opening degree of the throttle valve and the engine speed is an idle condition.
    [4" claim-type="Currently amended] The method of claim 1,
    And the engine torque control is terminated when the turbine speed reaches the set synchronous completion predicted turbine speed.
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    同族专利:
    公开号 | 公开日
    JP3745313B2|2006-02-15|
    KR100448363B1|2004-09-10|
    AU756896B1|2003-01-23|
    DE10228775A1|2003-07-10|
    US20030100401A1|2003-05-29|
    JP2003172171A|2003-06-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2001-11-28|Application filed by 현대자동차주식회사
    2001-11-28|Priority to KR10-2001-0074443A
    2003-06-09|Publication of KR20030044094A
    2004-09-10|Application granted
    2004-09-10|Publication of KR100448363B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2001-0074443A|KR100448363B1|2001-11-28|2001-11-28|Method for engine torque reduction controlling in automatic transmission|
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