KR100369194B1 - Method for controlling spark time and dwell time in vehicles - Google Patents

Method for controlling spark time and dwell time in vehicles Download PDF

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Publication number
KR100369194B1
KR100369194B1 KR10-2000-0087039A KR20000087039A KR100369194B1 KR 100369194 B1 KR100369194 B1 KR 100369194B1 KR 20000087039 A KR20000087039 A KR 20000087039A KR 100369194 B1 KR100369194 B1 KR 100369194B1
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South Korea
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time
energization
ignition
tdc
calculating
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KR10-2000-0087039A
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KR20020058907A (en
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최홍석
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/1502—Digital data processing using one central computing unit
    • F02P5/1504—Digital data processing using one central computing unit with particular means during a transient phase, e.g. acceleration, deceleration, gear change
    • 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
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • 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
    • F02D41/045—Detection of accelerating or decelerating state
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

본 발명은 차량에서의 점화시간 및 통전시간 제어방법에 관한 것으로, 급가감속시 정확한 점화시간 및 통전시간 제어를 통하여 역화를 방지하고 촉매 보호 및 동력 성능을 향상시키기 위한 목적을 가지고 있다. 본 발명에 따른 차량에서의 점화시간 및 통전시간 제어방법은 n-1 번째 TDC에서 RPM, 점화시기(ADVANCE), 통전 온 각(DWLANG), n-1번째 TDC 이전의 크랭크 포지션 센서(CPS)의 TOOTH PERIOD(PERTTHD)를 계산하는 제1 단계, 제1 단계에서 계산한 데이터로 식(1)을 사용하여 점화시간(SPKTIM)을 계산하는 제2 단계, 점화시기(ADVANCE)와 n 번째 TDC 이후의 크랭크 포지션 센서(CRANK POSITION SENSOR, PCS)의 TOOTH PERIOD(PERTTH)를 계산하는 제3 단계, 제3 단계에서 계산한 데이터로 식(2)를 사용하여 전체 시간(T)을 계산하는 제4 단계, 통전 온 시간(DWLTIM)을 식(3)을 사용하여 계산하는 제5 단계, 제5 단계에서 얻은 통전 온 시간을 n 번째 TDC의 통전 온 시간에 적용하는 제6 단계를 포함한다.The present invention relates to a method for controlling an ignition time and an energization time in a vehicle, and has an object of preventing backfire, improving catalyst protection, and power performance through accurate ignition time and energization time control during rapid acceleration and deceleration. Ignition time and energization time control method in the vehicle according to the present invention is the crank position sensor (CPS) of RPM, ignition timing (ADVANCE), energization on-angle (DWLANG), n-1 th TDC before the n-1 th TDC First step to calculate TOOTH PERIOD (PERTTHD), second step to calculate SPKTIM using equation (1) with data calculated in the first step, after ignition timing ADVANCE and nth TDC A third step of calculating the TOOTH PERIOD (PERTTH) of the crank position sensor (CRANK POSITION SENSOR, PCS), a fourth step of calculating the total time (T) using the formula (2) with the data calculated in the third step, A fifth step of calculating the energization on time DWLTIM using Equation (3), and a sixth step of applying the energization on time obtained in the fifth step to the energization on time of the nth TDC.

Description

차량에서의 점화시간 및 통전시간 제어방법 {METHOD FOR CONTROLLING SPARK TIME AND DWELL TIME IN VEHICLES}Control method of ignition time and energization time in vehicle {METHOD FOR CONTROLLING SPARK TIME AND DWELL TIME IN VEHICLES}

본 발명은 차량에서의 점화시간 및 통전시간 제어방법에 관한 것이다.The present invention relates to a method for controlling the ignition time and energization time in a vehicle.

LPG와 같은 자동차에서는 연소실 안에 압축된 혼합기를 전기 불꽃으로 적절한 시기에 점화하여 연소시키는 점화 장치가 필요하다. 이 때의 점화 장치는 자동차의 가속 및 감속에 따라 점화시기가 제어되는데, 가속될 때에는 점화시기를 빠르게 하고 감속될 때에는 점화시기를 늦추어 준다.In vehicles such as LPG, an ignition device is needed to ignite the compressed mixer in the combustion chamber with an electric flame in a timely manner. At this time, the ignition device is controlled according to the acceleration and deceleration of the vehicle. When the acceleration is accelerated, the ignition timing is accelerated, and when the deceleration is reduced, the ignition timing is delayed.

통상적으로, 전자 제어 엔진의 점화시기 제어 장치는 검출부와 제어부, 구동부로 구성되어 파워 트랜지스터를 ON/OFF 제어함으로써, 1차 전류가 제어되도록 되어 있다. 전자 제어 엔진의 점화시기 제어 장치에서 엔진 회전수의 측정은 크랭크각 검출 센서의 출력 신호에 의해 감지되며, 또한 부하의 측정은 공기량검출부(Air Flow Sensor)에 의해 흡입 공기량을 측정한 후 크랭크각 검출 센서의 신호에 의해 엔진에 걸린 부하를 연산한다.Usually, the ignition timing control device of the electronic control engine is composed of a detection unit, a control unit, and a drive unit, and the primary current is controlled by ON / OFF control of the power transistor. In the ignition timing control device of the electronic control engine, the engine speed is measured by the output signal of the crank angle detection sensor, and the load is measured by measuring the intake air amount by the air flow sensor. The load on the engine is calculated by the sensor signal.

상기와 같이 엔진 회전수와 부하가 연산되면 제어부(Engine Control Unit)는 기본 점화 진각 값을 연산하여 파워 트랜지스터로 점화 신호를 보낸다. 이때 제어부의 ON시간(파워 트랜지스터도 ON 상태)은 점화 코일의 1차 코일에 전류가 흐르는 시간 즉, 통전시간에 해당하며, 제어부의 OFF 신호가 발생하면 1차 전류가 차단되면서 2차 전류가 점화 코일로부터 유도된다.As described above, when the engine speed and the load are calculated, the engine control unit calculates a basic ignition advance value and sends an ignition signal to the power transistor. At this time, the ON time (power transistor also ON state) of the control part corresponds to the time when the current flows in the primary coil of the ignition coil, that is, the energization time. Derived from the coil.

종래 기술에서는 통전시간을 확보하기 위하여 점화시간은 이전 상사점(TOP DEAD CENTER, 이하 TDC라 함)의 PERTTHD를 적용하여 계산한다. 또한 점화시기(SPARK ADVANCE)의 정확도를 위하여 통전시간과 점화시간의 합인 전체 시간(T)을 먼저 산출한 후, 계산된 점화시간을 빼줌으로써, 통전 온 (DWELL ON) 시점을 계산한다.In the prior art, in order to secure the energization time, the ignition time is calculated by applying PERTTHD of a top dead center (hereinafter referred to as TDC). In addition, for the accuracy of the spark timing, the total time T, which is the sum of the energization time and the ignition time, is first calculated, and then the calculated ON time is calculated by subtracting the calculated ignition time.

그러나, 이와 같은 종래 기술 방법에서는, 차량의 급감가속시, 점화시간 계산이 정확하게 되지 않아 역화(Back Fire)가 발생하며 촉매 손상 및 동력 성능 저하를 초래한다.However, in such a prior art method, when the vehicle suddenly accelerates or decelerates, the ignition time calculation is not accurate, resulting in back fire, resulting in catalyst damage and power performance degradation.

본 발명은 급가감속시 정확한 점화시간 및 통전시간 제어를 통하여 역화를 방지하고 촉매 보호 및 동력 성능을 향상시킬 수 있는 차량에서의 점화시간 및 통전시간 제어방법을 제공하고자 한다.The present invention is to provide a method for controlling the ignition time and energization time in a vehicle that can prevent backfire and improve catalyst protection and power performance through accurate ignition time and energization time control during rapid acceleration and deceleration.

도 1은 본 발명의 실시예에 따른 점화 동작의 패턴도이고,1 is a pattern diagram of an ignition operation according to an embodiment of the present invention,

도 2는 본 발명의 실시예에 따른 점화시간 및 통전시간 제어방법의 흐름도이다.2 is a flowchart illustrating a method for controlling an ignition time and an energization time according to an embodiment of the present invention.

이러한 기술적 과제를 해결하기 위하여 본 발명에서는, 점화시간 및 통전시간의 제어는 계산된 RPM을 기본으로 하여 통전각(DWELL ANGLE)과 점화각(SPARK ADVANCE ANGLE)을 가지고 120-ADVANCE-DWLANG에 의해 계산된 TOOTH를 카운팅한 후, 마지막 TOOTH PERIOD(PERTTH)을 기준으로 통전 온(DWELL ON) 시간과 통전 오프(DWELL OFF) 시간을 프로그래밍 한다.In order to solve this technical problem, in the present invention, the control of the ignition time and the energization time is calculated by 120-ADVANCE-DWLANG with the current angle (DWELL ANGLE) and the spark angle (SPARK ADVANCE ANGLE) based on the calculated RPM. After counting TOOTH, program DWELL ON time and DWELL OFF time based on last TOOTH PERIOD (PERTTH).

상세하게 본 발명에 따른 차량에서의 점화시간 및 통전시간 제어방법은 n-1 번째 TDC에서 RPM, 점화시기(ADVANCE), 통전 온 각(DWLANG), n-1 번째 TDC 이전의 크랭크 포지션 센서(CPS)의 TOOTH PERIOD(PERTTHD)를 계산하는 제1 단계, 제1 단계에서 계산한 데이터로 식(1)을 사용하여 점화시간(SPKTIM)을 계산하는 제2 단계, 점화시기(ADVANCE)와 n 번째 TDC 이후의 크랭크 포지션 센서(CRANK POSITION SENSOR, PCS)의 TOOTH PERIOD(PERTTH)를 계산하는 제3 단계, 제3 단계에서 계산한 데이터로 식(2)를 사용하여 전체 시간(T)을 계산하는 제4 단계, 통전 온 시간(DWLTIM)을 식(3)을 사용하여 계산하는 제5 단계, 제5 단계에서 얻은 통전 온 시간을 n 번째 TDC의 통전 온 시간에 적용하는 제6 단계를 포함한다.Specifically, the ignition time and energization time control method in the vehicle according to the present invention is a crank position sensor (CPS before RPM, ignition timing (ADVANCE), energization on angle (DWLANG), n-1 th TDC in the n-1 th TDC). First step of calculating the TOOTH PERIOD (PERTTHD) of step 2), second step of calculating the ignition time SPKTIM using equation (1) with the data calculated in the first step, ignition timing (ADVANCE) and the nth TDC Third step of calculating TOOTH PERIOD (PERTTH) of the subsequent crank position sensor (CRANK POSITION SENSOR, PCS), and the fourth time of calculating the total time (T) using the data calculated in the third step (2). And a fifth step of calculating the energization on time DWLTIM using Equation (3), and a sixth step of applying the energization on time obtained in the fifth step to the energization on time of the nth TDC.

여기서, 제1 단계 이전에 n-1 번째의 TDC 인식이 판단되면, 제1 단계부터 제6 단계까지의 작업을 실시하는 것이 바람직하다.Here, if it is determined that the n-1 th TDC recognition is performed before the first step, it is preferable to perform the operations from the first step to the sixth step.

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

도 1은 본 발명의 실시예에 따른 점화 및 통전 동작의 패턴도이고, 도 2는 본 발명의 실시예에 따른 점화시간 및 통전시간 제어방법의 흐름도이다.1 is a pattern diagram of an ignition and energization operation according to an embodiment of the present invention, Figure 2 is a flow chart of the ignition time and energization time control method according to an embodiment of the present invention.

본 발명에서 점화시간 및 통전시간의 제어는 계산된 RPM을 기본으로 하여통전각(DWELL ANGLE)과 점화각(SPARK ADVANCE ANGLE)을 가지고 120-ADVANCE-DWLANG에 의해 계산된 TOOTH를 카운팅한 후, 마지막 TOOTH PERIOD(PERTTH)을 기준으로 통전 온(DWELL ON) 시간과 통전 오프(DWELL OFF) 시간을 프로그래밍 한다.In the present invention, the control of the ignition time and the energization time is based on the calculated RPM and counts the TOOTH calculated by 120-ADVANCE-DWLANG with the current angle (DWELL ANGLE) and the ignition angle (SPARK ADVANCE ANGLE), Program the DWELL ON and DWELL OFF times based on TOOTH PERIOD (PERTTH).

점화시간의 정확한 계산을 위해서는 전 TDC에서 계산된 값을 가지고 TOOTH 각도로 계산하는 것이 정상적이나 같은 각은 가지더라도 RPM에 변화가 생기면 각도를 시간으로 환산하는 TOOTH PERIOD의 시간 주기에 변화가 생겨 가감속시 계산된 통전시간 값은 각도상으로는 정확히 제어가 되나 시간상으로는 변화가 생긴다.For accurate calculation of the ignition time, it is normal to calculate the TOOTH angle with the value calculated from all TDCs, but even if it has the same angle, when the RPM changes, the time period of the TOOTH PERIOD converts the angle to time, so the acceleration and deceleration The energized time value calculated at the time is controlled exactly in terms of angle, but changes in time.

도면을 참조하여 급가감속시 상대적으로 변화하지 않는 통전시간 값을 갖기 위한 방법은 다음과 같다.Referring to the drawings, a method for having a energization time value that does not change relatively during rapid deceleration is as follows.

ECU에 의하여 n-1 번째 TDC를 인식(스텝 10)한 후, ECU에 의하여 n-1 번째 TDC에서 RPM, 점화시기(ADVANCE), 통전 온 각(DWELL ON ANGLE; DWLANG)을 계산(스텝 20)하고, ECU에 의하여 n-1 번째 TDC 이전의 CPS의 TOOTH PERIOD(PERTTHD)를 계산(스텝 30)한다.After the ECU recognizes the n-1 th TDC (step 10), the ECU calculates RPM, ignition timing (ADVANCE), and energization on angle (DWELL ON ANGLE; DWLANG) from the n-1 th TDC (step 20). Then, the ECU calculates TOOTH PERIOD (PERTTHD) of the CPS before the n-1 th TDC (step 30).

이어, 점화시간(SPKTIM)을 계산(스텝 40)한다. 이때의 점화시간은 통전 온 각(DWLANGLE) * n-1 번째 TDC 이전의 CPS의 TOOTH PERIOD(PERTTHD)/12에 의하여 구해진다.Next, the ignition time SPKTIM is calculated (step 40). The ignition time at this time is determined by TOOTH PERIOD (PERTTHD) / 12 of CPS before DWLANGLE * n-1 th TDC.

이어, ECU에 의하여 점화시기(AVVANCE)와 n 번째 TDC 이후의 크랭크 포지션 센서(CRANK POSITION SENSOR, PCS)의 TOOTH PERIOD(PERTTH)를 계산(스텝 50)한다.Then, the ECU calculates TOOTH PERIOD (PERTTH) of the crank position sensor CRANK POSITION SENSOR (PCS) after the nth TDC and the ignition timing AVVANCE (step 50).

이어, 통전시간과 점화시간의 합인 전체 시간(T)을 계산(스텝 60)한다. 전체 시간(T)은 (120-ADVANCE)*PERTTH/12에 의하여 구해진다.Next, the total time T, which is the sum of the energization time and the ignition time, is calculated (step 60). The total time T is found by (120-ADVANCE) * PERTTH / 12.

이어, 통전 온 시간(DWELL ON TIME; DWLTIM)을 계산(스텝 70)한다. 통전 온 시간(DWLTIM)은 전체 시간(T)-점화시간(SPKTIM)에 의하여 구해진다.Next, DWELLIM (DWELL ON TIME) is calculated (step 70). The energization on time DWLTIM is obtained by the total time T-ignition time SPKTIM.

이어, 이와 같이 계산된 통전 온 시간(DWLTIM)을 ECU가 n 번째 TDC의 통전 온 시간으로 적용(스텝 80)한다.Next, the ECU applies the energization on time DWLTIM thus calculated as the energization on time of the nth TDC (step 80).

그리고, 다음 번째 TDC 즉, n+1 번째 TDC의 통전 온 시간을 제어하기 위하여 스텝 20부터 스텝 70까지의 과정을 반복 실시한다.Then, the steps from 20 to 70 are repeated to control the energization on time of the next TDC, that is, the n + 1 th TDC.

본 발명은 상술한 바와 같이, 급감가속시 정확한 점화시간 및 통전시간 제어를 통하여 역화(Back Fire)를 방지하고 촉매 보호 및 동력 성능을 향상시킬 수 있다.As described above, the backfire may be prevented and catalyst protection and power performance may be improved through accurate ignition time and energization time control during sudden acceleration and deceleration.

Claims (2)

차량에서의 점화시간 및 통전시간 제어방법에 있어서,In the method of controlling the ignition time and energization time in a vehicle, n-1 번째 TDC에서 RPM, 점화시기(ADVANCE), 통전 온 각(DWLANG), n-1 번째 TDC 이전의 크랭크 포지션 센서(CPS)의 TOOTH PERIOD(PERTTHD)를 계산하는 제1 단계,a first step of calculating RPM, ignition timing (ADVANCE), energizing on angle (DWLANG), and TOOTH PERIOD (PERTTHD) of the crank position sensor (CPS) before the n-1 th TDC, 제1 단계에서 계산한 데이터로 식(1)을 사용하여 점화시간(SPKTIM)을 계산하는 제2 단계,A second step of calculating the ignition time SPKTIM using the equation (1) with the data calculated in the first step, 점화시기(ADVANCE)와 n 번째 TDC 이후의 크랭크 포지션 센서(CRANK POSITION SENSOR, PCS)의 TOOTH PERIOD(PERTTH)를 계산하는 제3 단계,A third step of calculating the TOOTH PERIOD (PERTTH) of the crank position sensor (CRANK POSITION SENSOR, PCS) after the nth TDC, 제3 단계에서 계산한 데이터로 식(2)를 사용하여 전체 시간(T)을 계산하는 제4 단계,A fourth step of calculating the total time T using the formula (2) with the data calculated in the third step, 통전 온 시간(DWLTIM)을 식(3)을 사용하여 계산하는 제5 단계,A fifth step of calculating the energization on time (DWLTIM) using equation (3), 제5 단계에서 얻은 통전 온 시간을 n 번째 TDC의 통전 온 시간에 적용하는 제6 단계A sixth step of applying the energization on time obtained in the fifth step to the energization on time of the nth TDC; 를 포함하는 차량에서의 점화시간 및 통전시간 제어방법.Ignition time and energization time control method in a vehicle comprising a. 식(1): SPKTIM = DWLANG * PERTTHD/12Equation (1): SPKTIM = DWLANG * PERTTHD / 12 식(2): T = (120 - ADVANCE) * PERTTH/12Equation (2): T = (120-ADVANCE) * PERTTH / 12 식(3): DWLTIM = T - SPKTIMEquation (3): DWLTIM = T-SPKTIM 제1항에서,In claim 1, 상기 제1 단계 이전에 n-1 번째의 TDC 인식이 판단되면, 상기 제1 단계부터 상기 제6 단계까지의 작업을 실시하는 차량에서의 점화시간 및 통전시간 제어방법.If the n-1 th TDC recognition is determined before the first step, the ignition time and energization time control method for the vehicle to perform the work from the first step to the sixth step.
KR10-2000-0087039A 2000-12-30 2000-12-30 Method for controlling spark time and dwell time in vehicles KR100369194B1 (en)

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