KR20080054141A - Reacceleration control method of a vehicle with an auto transmission - Google Patents

Reacceleration control method of a vehicle with an auto transmission Download PDF

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Publication number
KR20080054141A
KR20080054141A KR1020060126349A KR20060126349A KR20080054141A KR 20080054141 A KR20080054141 A KR 20080054141A KR 1020060126349 A KR1020060126349 A KR 1020060126349A KR 20060126349 A KR20060126349 A KR 20060126349A KR 20080054141 A KR20080054141 A KR 20080054141A
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South Korea
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throttle valve
acceleration
vehicle
automatic transmission
opening degree
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KR1020060126349A
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Korean (ko)
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김현주
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현대자동차주식회사
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Priority to KR1020060126349A priority Critical patent/KR20080054141A/en
Publication of KR20080054141A publication Critical patent/KR20080054141A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

A reacceleration control method of an automatic transmission is provided to prevent shock by keeping engine RPM(Revolution Per Minute) over turbine RPM until the certain time is elapsed and to secure accelerating feeling of a vehicle by quickly increasing the opening degree of a throttle valve. A reacceleration control method of an automatic transmission comprises the steps of: judging whether reacceleration is generated in a power-off range of a vehicle having an ETC(Electronic Throttle Control) function and the automatic transmission, or not; opening a throttle valve to the degree determined according to the current gear level, engine RPM, and the position of an accelerator pedal if reacceleration is generated; and rapidly increasing the opening degree of the throttle valve if the throttle valve is opened at the predetermined opening degree over the certain time and engine RPM exceeds turbine RPM.

Description

자동변속기 차량의 재가속 제어방법{reacceleration control method of a vehicle with an auto transmission} Reacceleration control method of a vehicle with an auto transmission

도 1과 도 2는 종래 기술의 문제점을 설명한 도면,1 and 2 illustrate the problems of the prior art;

도 3은 본 발명의 자동변속기 차량의 재가속 제어방법을 설명한 순서도,3 is a flow chart illustrating a re-acceleration control method of an automatic transmission vehicle of the present invention;

도 4는 본 발명의 제어를 설명한 그래프이다.4 is a graph illustrating the control of the present invention.

본 발명은 자동변속기 차량의 재가속 제어방법에 관한 것으로서, ETC(Electronic Throttle Control)기능을 구비하고 자동변속기를 탑재한 차량에서 엔진의 회전수가 터빈 회전수보다 작은 영역에서 운전자의 재가속 조작시에 충격이 발생하는 것을 방지하도록 하는 기술에 관한 것이다.The present invention relates to a re-acceleration control method for an automatic transmission vehicle. The present invention relates to a technique for preventing an impact from occurring.

자동변속기를 탑재한 차량에서 파워오프(Power off)구간, 즉 엔진의 회전수가 터빈 회전수 보다 작은 영역에서 운전자가 재가속을 위해 가속페달을 밟으면, 도 1에 도시된 바와 같이 엔진 회전수가 상승하여 터빈 회전수와 교차하는 시점에서 충격이 발생한다.In a vehicle equipped with an automatic transmission, if the driver presses the accelerator pedal for re-acceleration in a power off section, that is, in an area where the engine speed is smaller than the turbine speed, the engine speed increases as shown in FIG. The impact occurs at the point of intersection with the turbine speed.

상기한 바와 같은 재가속시 충격 발생을 방지 또는 완화하기 위하여, 종래에는 엔진의 토크가 차량에 전달되기 시작하는 구간에서 점화시기를 지각시켜서 엔진의 토크를 줄이는 토크 필터 방법을 사용하고 있는데, 이와 같이 단순히 점화시기를 지각시키는 방법만으로는 도 2에 도시된 바와 같이 충격을 효과적으로 방지시키지 못할 뿐만 아니라 차량의 가속감만 지연시키는 문제가 있다.In order to prevent or alleviate the impact of re-acceleration as described above, conventionally, a torque filter method is used to reduce the torque of the engine by retarding the ignition timing in a section where the torque of the engine begins to be transmitted to the vehicle. The method of merely recognizing the ignition timing does not effectively prevent the shock as shown in FIG. 2, but also delays only the acceleration of the vehicle.

또한, 다른 방법으로서, 파워트레인을 차체에 지지하는 마운트들의 특성을 변화시켜서 엔진과 변속기를 보다 강하게 차체에 지지하는 방법이 있으나, 이와 같은 방법은 재가속시의 충격 완화 및 방지에는 도움이 되지만, 반대로 아이들 진동을 악화시키는 문제점이 있다.As another method, there is a method of supporting the engine and the transmission more strongly by changing the characteristics of the mounts that support the powertrain to the body, but such a method is useful for mitigating and preventing shock during re-acceleration. On the contrary, there is a problem of worsening children vibration.

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 자동변속기 차량에서 파워오프 구간의 재가속시에 엔진의 토크를 능동적으로 제어함으로써, 재가속시에 발생하는 충격을 효과적으로 저감시키면서도 가속감을 확보할 수 있도록 한 자동변속기 차량의 재가속 제어방법을 제공함에 그 목적이 있다.The present invention has been made to solve the problems described above, by actively controlling the torque of the engine during the re-acceleration of the power-off section in the automatic transmission vehicle, while effectively reducing the impact generated during re-acceleration while feeling the acceleration It is an object of the present invention to provide a reacceleration control method for an automatic transmission vehicle that can be secured.

상기한 바와 같은 목적을 달성하기 위한 본 발명 자동변속기 차량의 재가속 제어방법은 Re-acceleration control method of the present invention an automatic transmission vehicle for achieving the above object is

ETC 기능을 구비하고 자동변속기를 탑재한 차량의 파워오프구간에서 재가속이 발생하는지를 판단하는 단계와;Determining whether re-acceleration occurs in a power-off section of a vehicle having an ETC function and equipped with an automatic transmission;

파워오프구간에서의 재가속이 판단되면, 현재의 기어단과, 엔진회전수 및 가속페달위치에 따라 결정되는 개도로 스로틀밸브를 개방하는 단계와;If the re-acceleration in the power-off section is determined, opening the throttle valve in an opening degree determined by the current gear stage and the engine speed and the accelerator pedal position;

상기 개도로 스로틀밸브를 개방한 시간이 소정시간 이상이 되고 엔진 회전수가 터빈 회전수 이상이 되면, 상기 스로틀밸브 개도를 급격히 증가시키는 단계;When the opening time of the throttle valve is more than a predetermined time and the engine speed is greater than the turbine speed, rapidly increasing the throttle valve opening degree;

를 포함하여 구성된 것을 특징으로 한다.Characterized in that configured to include.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 3과 도 4를 참조하면, 본 발명 실시예는 ETC 기능을 구비하고 자동변속기를 탑재한 차량의 파워오프구간에서 재가속이 발생하는지를 판단하는 단계와; 파워오프구간에서의 재가속이 판단되면, 현재의 기어단과, 엔진회전수 및 가속페달위치에 따라 결정되는 개도로 스로틀밸브를 개방하는 단계와; 상기 개도로 스로틀밸브를 개방한 시간이 소정시간 이상이 되고 엔진 회전수가 터빈 회전수 이상이 되면, 상기 스로틀밸브 개도를 급격히 증가시키는 단계를 포함하여 구성된다.3 and 4, an embodiment of the present invention includes determining whether re-acceleration occurs in a power-off section of a vehicle having an ETC function and equipped with an automatic transmission; If the re-acceleration in the power-off section is determined, opening the throttle valve in an opening degree determined by the current gear stage and the engine speed and the accelerator pedal position; When the opening time of the throttle valve is more than a predetermined time and the engine speed is more than the turbine speed, it comprises a step of rapidly increasing the throttle valve opening.

참고로, 도 3 및 도 4에서 TPS는 스로틀포지션센서의 값으로서 스로틀밸브의 개도를 나타내며, APS는 가속페달센서의 값으로서 가속페달이 밟힌 정도를 나타내며, Ne 는 엔진 회전수, NE1은 재가속 개시 시점의 엔진 회전수, Nt는 터빈 회전수이다. For reference, in FIGS. 3 and 4, the TPS represents the opening degree of the throttle valve as the value of the throttle position sensor, the APS represents the degree of stepping on the accelerator pedal as the value of the accelerator pedal sensor, Ne represents the engine speed, and NE1 represents the re-acceleration. The engine speed at the start time, Nt, is the turbine speed.

상기 파워오프구간에서 재가속이 발생하는지의 여부는 엔진 회전수가 터빈 회전수 보다 작고 가속페달센서(APS; Acceleration Pedal Position Sensor)에 의해 가속페달이 밟힌 것이 감지되면, 파워오프구간에서의 재가속으로 판단한다.Whether re-acceleration occurs in the power-off section is determined as re-acceleration in the power-off section when the engine speed is smaller than the turbine speed and the accelerator pedal is detected by the acceleration pedal sensor (APS). do.

상기와 같이 파워오프구간에서의 재가속으로 판단되면, 상기한 바와 같이 스로틀밸브를 개방하는데, 이때 상기 스로틀밸브의 개도는 TPS(Throttle valve Position Sensor)에 의해 감지되며, 현재의 변속기 기어단과, 엔진회전수 및 APS에 의해 측정되는 가속페달위치에 따라 결정되는 TPS1값으로 제어되는바, 그 의미는 TPS의 센싱 값에 의해 표현될 수 있는 스로틀밸브의 특정 개도를 의미한다.If it is determined as the re-acceleration in the power-off section as described above, the throttle valve is opened as described above, wherein the opening degree of the throttle valve is sensed by the Throttle valve Position Sensor (TPS), the current transmission gear stage and the engine It is controlled by the value of TPS1 determined according to the rotational speed and the position of the accelerator pedal measured by the APS, which means a specific opening degree of the throttle valve which can be expressed by the sensing value of the TPS.

상기 TPS1은 본 발명의 목적에 따라 재가속시 충격이 발생하는 것을 막기 위한 것으로서, 스로틀밸브의 개도가 0 이상이되 충격을 발생시키지는 않는 수준으로 설정되어야 하며, 후술하는 스로틀밸브의 개도를 급격히 증가시키는 단계와 더불어 차량의 가속감을 결정하게 되므로 너무 낮은 값을 가지지도 않도록 해야 한다.The TPS1 is to prevent the shock from re-acceleration in accordance with the object of the present invention, the opening of the throttle valve should be set to a level that does not generate an impact of more than 0, to sharply increase the opening degree of the throttle valve to be described later In addition to the stage, the acceleration of the vehicle will be determined, so make sure that it is not too low.

즉, 차량에 따라 적절한 값을 설정하기 위하여 다수의 실험 및 해석에 의해 설정되어야 할 값으로서, 상술한 바와 같이 현재의 기어단과, 엔진회전수 및 가속페달위치에 따른 함수 형태로 결정되어 미리 컨트롤러에 맵핑되어 있어야 한다.That is, as a value to be set by a number of experiments and analyses in order to set an appropriate value according to the vehicle, it is determined in the form of a function according to the current gear stage, the engine speed and the accelerator pedal position as described above, and in advance It must be mapped.

또한, 상기 TPS1을 유지하는 시간은 비록 엔진 회전수가 터빈 회전수를 넘어서더라도 최소한 소정시간(Δt1) 이상 유지되어야 안정적으로 충격을 방지할 수 있는바, 상기 소정의 시간(Δt1)은 약 5ms 이상 확보되는 것이 바람직할 것이다.In addition, the time for maintaining the TPS1 can be stably prevented from impact even if the engine speed exceeds the turbine speed at least a predetermined time (Δt1) bar, the predetermined time (Δt1) is secured about 5ms or more It would be desirable to be.

상기 스로틀밸브의 개도를 급격히 증가시키는 단계에서, 상기 스로틀밸브의 개도는 스로틀밸브개도/점화회수로 정해지는 소정의 기울기(SL)로 상승시킨다.In the step of rapidly increasing the opening degree of the throttle valve, the opening degree of the throttle valve is raised to a predetermined slope SL which is determined by the throttle valve opening / ignition frequency.

즉, 이 단계에서는 이미 엔진의 회전수가 터빈 회전수를 넘어서기 시작하여, 엔진에 의한 토크가 차량을 구동하기 시작하였으므로 충격의 발생 가능성이 현저히 줄어들게 되므로, 차량의 가속감을 확보하기 위해 가급적 최대한 빠른 시간 내에 스로틀밸브의 개도를 증가시켜서, 엔진의 토크를 상승시키도록 하는 것이다.That is, at this stage, the engine speed has already started to exceed the turbine speed, and since the torque generated by the engine has started to drive the vehicle, the possibility of impact is significantly reduced, so as to ensure the acceleration of the vehicle as soon as possible. Increasing the opening degree of the throttle valve in the engine to increase the torque of the engine.

물론, 상기한 바와 같이 스로틀밸브의 개도를 상승시킴에 의해서도 충격이 발생할 수도 있는바, 이는 역시 다수의 실제적인 실험과 해석에 의해 상기 점화회수당 스로틀밸브개도로 표현되는 기울기(SL)를 적절히 선정하여 충격이 발생하지는 않도록 해야 한다.Of course, the impact may also occur by increasing the opening degree of the throttle valve as described above, which also appropriately selects the slope SL represented by the throttle valve opening per ignition number by a number of practical experiments and analysis. Do not let impact occur.

이상의 본 발명을 종합하면, 파워오프 상태에서 가속페달이 조작되어 운전자의 가속의지가 판단되면, 가급적 낮은 스로틀개도인 TPS1을 엔진 회전수가 터빈 회전수를 넘어서고 소정시간이 경과할 때까지 유지하여 충격의 발생을 방지하고, 이후에는 스로틀밸브 개도를 가급적 신속히 상승시켜서 차량의 가속감을 확보할 수 있도록 하는 것이다.According to the present invention, when the accelerator pedal is operated in the power-off state and the driver's determination of acceleration is determined, the lowest throttle opening TPS1 is maintained until the engine speed exceeds the turbine speed and a predetermined time elapses. It is to prevent the occurrence, and to increase the opening of the throttle valve as soon as possible to ensure a sense of acceleration of the vehicle.

이상과 같이 본 발명에 의하면, 자동변속기 차량에서 파워오프 구간의 재가속시에 엔진의 토크를 능동적으로 제어함으로써, 재가속시에 발생하는 충격을 효과적으로 저감시키면서도 가속감을 확보할 수 있도록 한다.According to the present invention as described above, by actively controlling the torque of the engine at the time of re-acceleration of the power-off section in the automatic transmission vehicle, it is possible to secure a sense of acceleration while effectively reducing the impact generated during re-acceleration.

Claims (3)

ETC 기능을 구비하고 자동변속기를 탑재한 차량의 파워오프구간에서 재가속이 발생하는지를 판단하는 단계와;Determining whether re-acceleration occurs in a power-off section of a vehicle having an ETC function and equipped with an automatic transmission; 파워오프구간에서의 재가속이 판단되면, 현재의 기어단과, 엔진회전수 및 가속페달위치에 따라 결정되는 개도로 스로틀밸브를 개방하는 단계와;If the re-acceleration in the power-off section is determined, opening the throttle valve in an opening degree determined by the current gear stage and the engine speed and the accelerator pedal position; 상기 개도로 스로틀밸브를 개방한 시간이 소정시간 이상이 되고 엔진 회전수가 터빈 회전수 이상이 되면, 상기 스로틀밸브 개도를 급격히 증가시키는 단계;When the opening time of the throttle valve is more than a predetermined time and the engine speed is greater than the turbine speed, rapidly increasing the throttle valve opening degree; 를 포함하여 구성된 것을 특징으로 하는 자동변속기 차량의 재가속 제어방법.Reacceleration control method for an automatic transmission vehicle, characterized in that configured to include. 청구항 1에 있어서, The method according to claim 1, 상기 파워오프구간에서 재가속이 발생하는지의 여부는 엔진 회전수가 터빈 회전수 보다 작고 가속페달센서에 의해 가속페달이 밟힌 것이 감지되면, 파워오프구간에서의 재가속으로 판단하는 것Whether re-acceleration occurs in the power-off section is judged as re-acceleration in the power-off section when the engine speed is smaller than the turbine speed and the accelerator pedal is detected by the accelerator pedal sensor. 을 특징으로 하는 자동변속기 차량의 재가속 제어방법.Re-acceleration control method of an automatic transmission vehicle, characterized in that. 청구항 1에 있어서,The method according to claim 1, 상기 스로틀밸브의 개도를 급격히 증가시키는 단계에서, 상기 스로틀밸브의 개도는 스로틀밸브개도/점화회수로 정해지는 소정의 기울기로 상승시키는 것 In the step of rapidly increasing the opening degree of the throttle valve, the opening degree of the throttle valve is raised by a predetermined slope determined by the throttle valve opening / ignition frequency. 을 특징으로 하는 자동변속기 차량의 재가속 제어방법.Re-acceleration control method of an automatic transmission vehicle, characterized in that.
KR1020060126349A 2006-12-12 2006-12-12 Reacceleration control method of a vehicle with an auto transmission KR20080054141A (en)

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