KR960008023A - Noise detection device of cylinder signal and its method - Google Patents

Noise detection device of cylinder signal and its method Download PDF

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Publication number
KR960008023A
KR960008023A KR1019940021547A KR19940021547A KR960008023A KR 960008023 A KR960008023 A KR 960008023A KR 1019940021547 A KR1019940021547 A KR 1019940021547A KR 19940021547 A KR19940021547 A KR 19940021547A KR 960008023 A KR960008023 A KR 960008023A
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South Korea
Prior art keywords
signal
cylinder
crank angle
input
pulses
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KR1019940021547A
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Korean (ko)
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KR0180386B1 (en
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최재홍
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전성원
현대자동차 주식회사
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Priority to KR1019940021547A priority Critical patent/KR0180386B1/en
Publication of KR960008023A publication Critical patent/KR960008023A/en
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Publication of KR0180386B1 publication Critical patent/KR0180386B1/en

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    • 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
    • F02D41/008—Controlling each cylinder individually

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

각 실린더의 동작상태를 감지하여 동작상태가 BTDC114°에 해당하는 경우에 그에 해당하는 전기적인 신호를 출력하는 실린더 감지수단과; 상기 실린더 감지수단에서 신호가 출력이 되면 크랭크각 감지 인터럽트 루틴에서 수행된 크랭크각 신호의 펄스수를 판독하여, 판독된 크랭크 각 신호의 펄스수가 정상적인 실린더 신호입력에 따른 펄스수인 설정수보다 작은 경우에는 입력되는 신호를 노이즈로 처리하는 제어수단으로 이루어지는 실린더 신호의 노이즈 감지장치는, 실린더 신호에 따라 입력되는 크랭크각 신호를 감지하여 크랭크각 신호가 일정수이상인 경우에 실린더 신호를 정상적인 신호로 간주하여, 실린더 신호의 노이즈로 인한 오동작을 방지하여 보다 정확한 점화시기 및 연료분사량을 설정하여 엔진출력을 향상시킬 수 있으며, 연비 향상에 유효한 방법을 제공할 수 있다.Cylinder detecting means for detecting an operating state of each cylinder and outputting an electrical signal corresponding to the operating state corresponding to BTDC 114 °; When the signal is output from the cylinder detecting means, the pulse number of the crank angle signal performed by the crank angle detection interrupt routine is read, and the pulse number of the read crank angle signal is smaller than the set number which is the pulse number according to the normal cylinder signal input. The noise detection device of a cylinder signal comprising a control means for processing an input signal as noise detects an input crank angle signal according to the cylinder signal, and considers the cylinder signal as a normal signal when the crank angle signal is a predetermined number or more. In addition, by preventing the malfunction caused by the noise of the cylinder signal, it is possible to set the more accurate ignition timing and fuel injection amount to improve the engine output, and provide an effective method for improving fuel economy.

Description

실린더 신호의 노이즈 감지장치 및 그 방법Noise detection device of cylinder signal and its method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 이 발명의 실시예에 따른 실린더 신호의 노이즈 감지장치의 구성 블럭도이고,1 is a block diagram of a noise detection device of a cylinder signal according to an embodiment of the present invention,

제2도는 이 발명의 실시예에 따른 실린더 신호의 노이즈 감지장치의 신호파형도이고,2 is a signal waveform diagram of a noise detection device of a cylinder signal according to an embodiment of the present invention,

제3도는 이 발명의 실시예에 따른 실린더 신호의 노이즈 감지방법의 동작 순서도이다.3 is an operation flowchart of a noise detection method of a cylinder signal according to an exemplary embodiment of the present invention.

Claims (4)

각 실린더의 동작상태를 감지하여 동작상태가 BTDC114°에 해당하는 경우에 그에 해당하는 전기적인 신호를 출력하는 실린더 감지수단과; 상기 실린더 감지수단에서 신호가 출력이 되면 크랭크각 감지 인터럽트 루틴에서 수행된 크랭크각 신호의 펄스수를 판독하여, 판독된 크랭크각 신호의 펄스수가 정상적인 실린더 신호입력에 따른 펄스수인 설정수보다 작은 경우에는 입력되는 신호를 노이즈로 처리하는 제어수단으로 이루어지는 것을 특징으로 하는 실린더 신호의 노이즈 감지장치.Cylinder detecting means for detecting an operating state of each cylinder and outputting an electrical signal corresponding to the operating state corresponding to BTDC 114 °; When the signal is output from the cylinder detecting means, the pulse number of the crank angle signal performed by the crank angle detection interrupt routine is read, and the pulse number of the read crank angle signal is smaller than the set number which is the pulse number according to the normal cylinder signal input. The noise detection device of the cylinder signal, characterized in that the control means for processing the input signal to noise. 제1항에 있어서, 상기한 제어수단은, 크랭크각 신호의 펄스수와의 관계를 판단하여 크랭크각 신호의 펄스수가 설정수이상인 경우에 입력되는 실린더신호의 레벨상태를 판단하여, 실린더신호의 레벨이 변화하지 않은 경우에는 정상적인 실린더 신호로 판단하고, 실린더신호의 레벨이 변화한 경우에는 노이즈로 판단하는 것을 특징으로 하는 실린더 신호의 노이즈 감지장치.The cylinder control device according to claim 1, wherein the control means determines the relationship between the number of pulses of the crank angle signal and judges the level of the cylinder signal input when the number of pulses of the crank angle signal is equal to or greater than the set number. The noise detection device of the cylinder signal, characterized in that it is judged as a normal cylinder signal when the change does not change, and when the level of the cylinder signal changes. 실린더 신호가 입력이 되면 설정된 변수를 초기화한 다음 크랭크각 감지 인터럽트 루틴에서 수행된 크랭크각 신호의 펄스수를 판독하는 단계와; 다시 실린더 신호의 입력여부를 판단하는 단계와; 상기에서 실린더 신호가 입력되는 경우에 상기 판독된 크랭크각 신호의 펄스수와 정상적인 실린더 신호가 입력되는 경우에 해당하는 크랭크각 펄스수인 설정수와의 관계를 판단하는 단계와; 상기에서 판독된 크랭크각 펄스수가 설정수보다 작은 경우에는 입력되는 실린더신호를 노이즈로 판단하고, 크랭크각 펄스수가 설정수보다 큰 경우에는 입력되는 실린더신호를 정상적인 신호로 판단하는 단계로 이루어지는 것을 특징으로 하는 실린더 신호의 노이즈 감지방법.Initializing the set variable when the cylinder signal is input, and then reading the number of pulses of the crank angle signal performed in the crank angle detection interrupt routine; Determining whether the cylinder signal is input again; Determining a relationship between the number of pulses of the read crank angle signal when the cylinder signal is input and a set number which is the number of crank angle pulses when the normal cylinder signal is input; Determining that the cylinder signal to be input is noise when the number of crank angle pulses is smaller than the set number, and determining the cylinder signal to be input as a normal signal when the number of crank angle pulses is larger than the set number. Noise detection method of the cylinder signal. 제3항에 있어서, 크랭크각 신호의 펄스수와 설정수와의 관계를 판단하는 단계에 있어서, 크랭크각 신호의 펄스수가 설정수이상인 경우에 입력되는 실린더신호의 레벨상태를 판단하여, 실린더신호의 레벨이 변화하지 않은 경우에는 정상적인 실린더 신호로 판단하고, 실린더신호의 레벨이 변화한 경우에는 노이즈로 판단하는 단계를 더 포함하여 이루어지는 것을 특징으로 하는 실린더 신호의 노이즈 감지방법.4. The method according to claim 3, wherein in the step of determining the relationship between the number of pulses of the crank angle signal and the set number, the level of the cylinder signal inputted when the number of pulses of the crank angle signal is equal to or greater than the set number is determined, And determining the normal cylinder signal when the level does not change, and determining the noise as the level when the cylinder signal level changes. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940021547A 1994-08-30 1994-08-30 Noise detecting apparatus of cylinder signal KR0180386B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940021547A KR0180386B1 (en) 1994-08-30 1994-08-30 Noise detecting apparatus of cylinder signal

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Application Number Priority Date Filing Date Title
KR1019940021547A KR0180386B1 (en) 1994-08-30 1994-08-30 Noise detecting apparatus of cylinder signal

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KR960008023A true KR960008023A (en) 1996-03-22
KR0180386B1 KR0180386B1 (en) 1999-03-20

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