KR100223248B1 - Torque controlling method - Google Patents

Torque controlling method Download PDF

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Publication number
KR100223248B1
KR100223248B1 KR1019970035306A KR19970035306A KR100223248B1 KR 100223248 B1 KR100223248 B1 KR 100223248B1 KR 1019970035306 A KR1019970035306 A KR 1019970035306A KR 19970035306 A KR19970035306 A KR 19970035306A KR 100223248 B1 KR100223248 B1 KR 100223248B1
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South Korea
Prior art keywords
torque
predetermined value
vehicle speed
equal
determining whether
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KR1019970035306A
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Korean (ko)
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KR19990012034A (en
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박무용
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양재신
대우자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H2059/147—Transmission input torque, e.g. measured or estimated engine torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor
    • F16H2063/508—Signals to an engine or motor for limiting transmission input torque, e.g. to prevent damage of transmission parts

Abstract

본 발명은 자동 변속기의 변속시에 토오크 제한방법에 관한 것으로, 자동차의 시동이 온상태인가를 판단하는 단계(S100)와, 차속센서(14)가 차속을 감지하는 단계(S101)와, 차속센서(14)가 감지한 차속이 소정값이상인가를 판단하는 단계(S102)와, 차속이 소정값이상일 때에 트로틀 포지션 센서(16)가 트로틀밸브의 개도율이 소정값이상인가를 판단하는 단계(S103)와, 차속 및 트로틀밸브의 개도율이 소정값이하일 때에 현재의 토오크값을 유지하는 단계(S106)와, 개도율이 소정값이상일 때에 토오크감소 응답이 소정이상인가를 판단하는 단계(S104)와, 토오크감소 응답이 소정값이상일 때에 연료차단에 의해 토오크를 감소시키는 단계(S105)와, 토오크감소 응답이 소정값이하일 때에 점화주기에 의해 토오크를 감소시키는 단계(S106)로 이루어져 엔진으로부터 자동 변속기에 전달되는 토오크가 최대가 되는 동작조건에서 엔진토오크를 감소시키는 것이다.The present invention relates to a torque limiting method when shifting an automatic transmission, the method comprising: determining whether the start of the vehicle is on (S100), and detecting the vehicle speed by the vehicle speed sensor 14 (S101), and the vehicle speed sensor. (S102) determining whether the vehicle speed sensed by (14) is greater than or equal to the predetermined value, and when the vehicle speed is greater than or equal to the predetermined value, determining that the opening ratio of the throttle valve is greater than or equal to the predetermined value (S103). ), Maintaining the current torque value when the opening rate of the vehicle speed and the throttle valve is less than or equal to the predetermined value (S106), and determining whether the torque reduction response is greater than or equal to the predetermined value when the opening rate is greater than or equal to the predetermined value (S104); And reducing the torque by the fuel cutoff when the torque reduction response is greater than or equal to the predetermined value (S105) and reducing the torque by the ignition period when the torque reduction response is less than the predetermined value (S106). The engine torque is reduced under the operating conditions where the torque transmitted to the shorthand is maximized.

Description

자동 변속기의 변속시에 토오크 제한방법Torque limit method when shifting automatic transmission

본 발명은 자동차의 변속기에 관한 것으로, 특히 자동 변속기가 장착된 자동차에서 변속기로 전달되는 엔진토오크가 최대가 되는 조건에서 엔진토오크를 감소시키는 자동 변속기의 변속시에 토오크 제한방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission of a motor vehicle, and more particularly, to a torque limiting method for shifting of an automatic transmission in which an engine torque is reduced in a condition where the engine torque transmitted to the transmission is maximized in an automobile equipped with an automatic transmission.

일반적으로 변속기는 클러치와 추진축사이에 설치되어 자동차의 주행상태 변화에 따른 엔진의 회전력을 증대시키거나 감소시키는 역할을 하며, 자동차를 후진시키기 위한 역전장치도 갖추고 있다. 또한 엔진을 조정할 때나 엔진을 워엄업시키기 위해 엔진과 구동륜과의 연결을 일정시간 동안 끊어두는 역할도 한다. 변속기는 수동식과 자동식이 있다.In general, the transmission is installed between the clutch and the propulsion shaft to increase or decrease the rotational force of the engine according to the change in the driving state of the vehicle, and also has a reversing device for reversing the vehicle. It also serves to disconnect the engine from the drive wheels for a period of time when adjusting the engine or to warm up the engine. The transmission is available in manual and automatic.

상기에서 자동 변속기는 클러치와 변속기의 조작을 사람대신에 기계가 하도록 자동화한 것이다. 자동 변속기는 유체동력 전달장치, 유성기어 변속장치, 유압제어장치, 유압과 유압작동회로 및 변속조작기구 등으로 나뉘어지고, 상기 유체동력 전달장치중에 유체클러치는 유체커플링이라고도 하며, 엔진의 회전력을 액체의 운동에너지로 바꾸어 이 에너지를 다시 동력으로 바꾸어 변속기에 전달하는 클러치이다. 토오크변환기는 유체의 운동에너지를 이용하여 자동적으로 전달 토오크를 변환하고, 유체클러치의 역할을 수행한다.In the above, the automatic transmission is a machine that automates the operation of the clutch and the transmission instead of a person. The automatic transmission is divided into a fluid power transmission device, a planetary gear transmission, a hydraulic control device, hydraulic and hydraulic operation circuits, and a shift operation mechanism. The fluid clutch in the fluid power transmission device is also called a fluid coupling, and the rotational force of the engine It is a clutch that converts energy into liquid kinetic energy and converts this energy back into power. The torque converter automatically converts the transfer torque using the kinetic energy of the fluid and performs the role of the fluid clutch.

토오크변환기는 엔진에 의해 펌프임펠러가 회전하면 그 안의 오일은 원심력에 의하여 순환운동을 시작한다. 이때 오일은 펌프에서 터어빈쪽으로 분출되어 터어빈의 회전력을 주면서 터어빈의 안쪽으로 들어가 스테이터로 유출된다. 스테이터에서 방향이 바뀌어 다시 펌프를 뒤에서 밀어주면 펌프의 회전을 돕는 결과가 되어 그 만큼 터어빈에 가해지는 힘이 커지고 터어빈의 회전력은 증대한다. 유체클러치의 경우에는 터어빈에서 돌아오는 오일이 펌프의 회전방향과 반대이므로 터어빈의 회전력은 커지지 않는다. 이러한 것이 유체클러치와 다른 점이다.The torque converter starts the circulation movement by the centrifugal force when the pump impeller is rotated by the engine. At this time, the oil is ejected from the pump toward the turbine and gives the rotational force of the turbine and enters the inside of the turbine and flows out to the stator. If the direction is changed in the stator and the pump is pushed from the back, it helps the rotation of the pump, which increases the force applied to the turbine and increases the torque of the turbine. In the case of the fluid clutch, the rotational force of the turbine does not increase because the oil returned from the turbine is opposite to the direction of rotation of the pump. This is different from the fluid clutch.

그러나 종래에 엔진과 트랜스미션이 매칭할 때에 엔진이 토오크가 트랜스미션의 토오크의 용량보다 조금이라도 큰 경우에는 변속기의 토오크용량을 증대시키는 것이 불가능한 문제가 있었다.However, when the engine and the transmission match in the related art, it is impossible to increase the torque capacity of the transmission when the engine torque is slightly larger than the torque capacity of the transmission.

본 발명은 상기와 같은 문제를 해결하기 위하여 안출한 것으로, 자동 변속기로 전달되는 엔진의 토오크가 최대가 되는 조건에서 엔진의 토오크를 감소시켜 변속기 토오크 용량을 증대시키기 위한 것이 목적이다.The present invention has been made to solve the above problems, and an object thereof is to increase the transmission torque capacity by reducing the torque of the engine under the condition that the torque of the engine transmitted to the automatic transmission is maximum.

도 1은 본 발명에 따른 자동 변속기의 변속시에 토오크 제한장치의 블록도,1 is a block diagram of a torque limiting device in shifting of an automatic transmission according to the present invention;

도 2는 본 발명에 따른 자동 변속기의 변속시에 토오크 제한방법을 나타낸 흐름도.2 is a flowchart illustrating a torque limiting method in shifting of an automatic transmission according to the present invention.

♣ 도면의 주요 부분에 대한 부호의 설명 ♣♣ Explanation of symbols for the main parts of the drawing ♣

10: 엔진 콘트롤 유니트(ECU) 12: 트랜스미션 콘트롤 유니트(TCU)10: engine control unit (ECU) 12: transmission control unit (TCU)

14: 차속센서 16: 트로틀 포지션 센서(TPS)14: Vehicle speed sensor 16: throttle position sensor (TPS)

본 발명은 상기의 목적을 달성하기 위하여, 자동차의 시동이 온상태인가를 판단하는 단계와, 차속센서가 차속을 감지하는 단계와, 차속센서가 감지한 차속이 소정값이상인가를 판단하는 단계와, 차속이 소정값이상일 때에 트로틀포지션센서가 트로틀밸브의 개도율이 소정값이상인가를 판단하는 단계와, 차속 및 트로틀밸브의 개도율이 소정값이하일 때에 현재의 토오크값을 유지하는 단계와, 개도율이 소정값이상일 때에 토오크감소 응답이 소정이상인가를 판단하는 단계와, 토오크감소 응답이 소정값이상일 때에 연료차단에 의해 토오크를 감소시키는 단계와, 토오크감소 응답이 소정값이하일 때에 점화주기에 의해 토오크를 감소시키는 단계로 이루어진 자동 변속기의 변속시에 토오크 제한방법을 제공함으로써 달성될 수 있다.In order to achieve the above object, the present invention provides a method of determining whether the vehicle is started, determining whether the vehicle speed sensor detects the vehicle speed, determining whether the vehicle speed detected by the vehicle speed sensor is greater than or equal to a predetermined value, and Determining, by the throttle position sensor, that the opening rate of the throttle valve is greater than or equal to the predetermined value when the vehicle speed is greater than or equal to the predetermined value; maintaining the current torque value when the opening rate of the vehicle speed and throttle valve is less than or equal to the predetermined value; Determining whether the torque reduction response is greater than or equal to the predetermined value when the ratio is greater than or equal to the predetermined value; reducing torque by fuel cutoff when the torque reduction response is greater than or equal to the predetermined value; and ignition cycle when the torque reduction response is less than or equal to the predetermined value. It can be achieved by providing a torque limiting method in shifting of an automatic transmission, which is made up of a step of reducing torque.

이하, 첨부된 도면에 의거하여 본 발명에 관하여 살펴보면 다음과 같다.Hereinafter, the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 자동 변속기의 변속시에 토오크 제한장치를 나타낸 블록도이다.1 is a block diagram showing a torque limiting device in shifting of an automatic transmission according to the present invention.

차속센서(14)는 자동차의 내부일측에 장착되어 차속을 감지하는 것으로, 감지된 차속은 전기적인 신호로 변환되어 자동차내에서 필요로 하는 장치로 출력된다. 예를 들면, 차속신호는 자동차의 계기판일측에 장착된 속도계로 출력되어 현재 자동차의 속도를 표시하는 기본데이터로 이용된다.The vehicle speed sensor 14 is mounted on one side of the vehicle to detect the vehicle speed, and the detected vehicle speed is converted into an electrical signal and output to a device required in the vehicle. For example, the vehicle speed signal is output to a speedometer mounted on one side of the instrument panel of the vehicle and used as basic data indicating the speed of the current vehicle.

트로틀 포지션 센서(16)는 혼합기가 엔진의 실린더로 유입되는 것을 조절하는 트로틀밸브에 연결되어 트로틀밸브의 개도상태를 감지하는 것이다.The throttle position sensor 16 is connected to a throttle valve that controls the inflow of the mixer into the cylinder of the engine and detects the opening state of the throttle valve.

트랜스미션 콘트롤 유니트(12)는 상기 차속센서(14) 및 트로틀 포지션 센서(16)로부터 입력된 차속신호 및 트로틀밸브의 개도신호를 입력받아 해당되는 제어신호를 트랜지스미션에 출력시켜 트랜스미션을 자동으로 제어하는 것으로, 입력된 데이터를 비교 및 판단하고 제어하는 기준데이터나 프로그램이 내장되어 있다.The transmission control unit 12 receives the vehicle speed signal inputted from the vehicle speed sensor 14 and the throttle position sensor 16 and the opening signal of the throttle valve, and outputs a corresponding control signal to the transition mission to automatically control the transmission. In this case, reference data or a program for comparing, judging, and controlling the input data are embedded.

엔진 콘트롤 유니트(10)는 상기 트랜스미션 콘트롤 유니트(12)로부터 입력된 데이터 또는 제어신호를 입력받아 내장된 데이터나 프로그램에 의해 엔진의 구동을 제어하는 것이다. 즉, 엔진 콘트롤 유니트(10)는 트랜스미션 콘트롤 유니트(12)로부터 트랜스미션의 상태를 판단하여 엔진으로부터 트랜스미션으로 출력되는 구동력을 조절하기 위하여 엔진으로의 연료차단 또는 점화주기 결정 등과 같은 제어신호를 출력시킨다.The engine control unit 10 receives data or a control signal input from the transmission control unit 12 and controls the driving of the engine by the built-in data or program. That is, the engine control unit 10 outputs a control signal such as determining fuel cutoff or ignition cycle to the engine in order to determine the state of the transmission from the transmission control unit 12 and to adjust the driving force output from the engine to the transmission.

이와 같이 구성된 본 발명에 관한 자동 변속기의 변속시에 토오크 제한방법에 대해서 살펴본다.The torque limiting method in shifting of the automatic transmission according to the present invention configured as described above will be described.

도 2는 본 발명에 따른 자동 변속기의 변속시에 토오크 제한방법을 나타낸 흐름도로, 단계(S100)은 자동차의 시동이 걸린 상태인가를 판단하여 단계(S101)에서 시동이 걸린 상태에서 차속센서(14)로부터 차속이 있나를 감지하게 된다. 감지된 차속신호는 트랜스미션 콘트롤 유니트(12)로 입력되어 기준데이터와 비교된다.2 is a flowchart illustrating a torque limiting method in shifting of an automatic transmission according to the present invention. In step S100, it is determined whether the vehicle is started, and the vehicle speed sensor 14 is started in step S101. Will detect whether there is vehicle speed. The detected vehicle speed signal is input to the transmission control unit 12 and compared with the reference data.

단계(S102)에서는 차속센서(14)에서 감지된 차속이 소정 속도(예를 들면, 약 5Km)이상인가를 판단하게 된다. 즉, 자동차의 시동이 걸린 상태라도 아이들 상태인가 또는 주행중인 상태인가를 판단한 후에 주행중일 경우의 차속을 감지하는 것이다. 단계(S103)에서는 차속센서(14)로부터 감지된 차속이 소정값이상일 경우에 트로틀 포지션 센서(16)에서 트로틀밸브가 소정의 개도율(예를 들면, 약 95%)이상인가를 감지하게 되고 감지된 신호는 트랜스미션 콘트롤 유니트(12)로 입력되어 기준되는 데이터와 비교 및 판단된다.In step S102, it is determined whether the vehicle speed detected by the vehicle speed sensor 14 is greater than or equal to a predetermined speed (for example, about 5 km). In other words, the vehicle speed is detected when the vehicle is driven after determining whether the vehicle is in the idle state or the driving state even when the vehicle is started. In step S103, when the vehicle speed detected from the vehicle speed sensor 14 is greater than or equal to a predetermined value, the throttle position sensor 16 detects whether the throttle valve is greater than or equal to a predetermined opening rate (for example, about 95%) and is detected. The received signal is input to the transmission control unit 12 and compared and judged with reference data.

단계(S104)에서 차속센서(14) 및 트로틀 포지션 센서(16)로부터 입력된 값이 만족되면, 토오크감소 응답이 소정값(예를 들면, 30%)이상인가를 판단하게 된다. 단계(S105)에서는 판단된 토오크 감소 응답이 소정값보다 크면, 주입되는 연료를 차단시켜 토오크를 감소시키고, 단계(S107)에서는 판단된 토오크 감소 응답이 소정값보다 작으면, 점화주기에 의해 토오크를 감소시킨다.If the values input from the vehicle speed sensor 14 and the throttle position sensor 16 are satisfied in step S104, it is determined whether the torque reduction response is equal to or greater than a predetermined value (for example, 30%). In step S105, when the determined torque reduction response is greater than the predetermined value, the injected fuel is cut off to reduce the torque. In step S107, when the determined torque reduction response is smaller than the predetermined value, the torque is adjusted by the ignition cycle. Decrease.

또한 단계(S106)에서는 상기 단계(S102) 및 (S103)에서 각각 차속이 소정값(5%)이하이고, 트로틀 포지션 센서(16)의 개도율이 일정값(95%)이하일 경우에는 엔진으로부터 현재의 토오크를 그대로 유지하도록하는 한다.In the step S106, when the vehicle speed is less than the predetermined value (5%) or less in the steps S102 and S103, respectively, and the opening rate of the throttle position sensor 16 is equal to or less than the predetermined value (95%), To keep the torque intact.

이와 같이 본 발명에서는 엔진으로부터 자동 변속기에 전달되는 토오크가 최대가 되는 동작조건에서 엔진의 토오크를 감소시키는 것이다.As described above, in the present invention, the torque of the engine is reduced under operating conditions in which the torque transmitted from the engine to the automatic transmission is maximized.

이상에서 설명한 바와 같이, 본 발명은 트랜스미션 콘트롤 유니트에서 차속센서 및 트로틀 포지션 센서로부터 감지된 신호를 판단하여 변속기로 전달되는 엔진 토오크가 최대가 되는 조건에서 엔진의 토오크를 감소시켜 주어 변속기의 토오크 용량을 증대시킬 수 있으므로 자동 변속기가 장착된 자동차의 운용에 편의를 증대시킨 효과가 있다.As described above, the present invention determines the signal detected from the vehicle speed sensor and the throttle position sensor in the transmission control unit to reduce the torque of the engine under the condition that the engine torque delivered to the transmission is the maximum to reduce the torque capacity of the transmission. Since it can be increased, there is an effect of increasing convenience in the operation of a vehicle equipped with an automatic transmission.

Claims (1)

자동차의 시동이 온상태인가를 판단하는 단계와,Determining whether the car is on; 차속센서가 차속을 감지하는 단계와,Detecting the vehicle speed by the vehicle speed sensor; 차속센서가 감지한 차속이 소정값이상인가를 판단하는 단계와,Determining whether the vehicle speed detected by the vehicle speed sensor is greater than or equal to a predetermined value; 차속이 소정값이상일 때에 트로틀 포지션 센서가 트로틀밸브의 개도율이 소정값이상인가를 판단하는 단계와,Determining, by the throttle position sensor, that the opening ratio of the throttle valve is equal to or greater than the predetermined value when the vehicle speed is equal to or greater than the predetermined value; 차속 및 트로틀밸브의 개도율이 소정값이하일 때에 현재의 토오크값을 유지하는 단계와,Maintaining the current torque value when the opening speed of the vehicle speed and the throttle valve is less than or equal to a predetermined value; 개도율이 소정값이상일 때에 토오크감소 응답이 소정이상인가를 판단하는 단계와,Determining whether the torque reduction response is greater than or equal to the predetermined value when the opening degree is greater than or equal to the predetermined value; 토오크감소 응답이 소정값이상일 때에 연료차단에 의해 토오크를 감소시키는 단계와,Reducing the torque by shutting off the fuel when the torque reduction response is greater than or equal to a predetermined value; 토오크감소 응답이 소정값이하일 때에 점화주기에 의해 토오크를 감소시키는 단계로 이루어진 것을 특징으로 하는 자동 변속기의 변속시에 토오크 제한방법.And reducing the torque by the ignition period when the torque reduction response is less than a predetermined value.
KR1019970035306A 1997-07-26 1997-07-26 Torque controlling method KR100223248B1 (en)

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