KR20070025657A - Method for on board diagnosis of ocv for automotive cda engine - Google Patents

Method for on board diagnosis of ocv for automotive cda engine Download PDF

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KR20070025657A
KR20070025657A KR1020050082059A KR20050082059A KR20070025657A KR 20070025657 A KR20070025657 A KR 20070025657A KR 1020050082059 A KR1020050082059 A KR 1020050082059A KR 20050082059 A KR20050082059 A KR 20050082059A KR 20070025657 A KR20070025657 A KR 20070025657A
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engine
cylinder
cda
control valve
ocv
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KR1020050082059A
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Korean (ko)
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KR101080777B1 (en
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김택현
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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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/02—Cutting-out
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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

Abstract

A method for on-board diagnosis of an oil control valve for a CDA(Cylinder De-Activation) engine of a vehicle is provided to achieve improved fuel efficiency by quickly judging and repairing faults of the oil control valve. A method for on-board diagnosis of an oil control valve for a CDA engine comprises a step of calculating the difference between the pressure value of an intake manifold modeled from the measurement value of an air flow sensor and the actual pressure value of the intake manifold measured by a manifold pressure sensor; a step of determining as faults of the oil control valve and comparing lambda values of both banks for selecting a cylinder with faults, if the difference is larger than a threshold value; a step of converting the engine into a full engine mode when the tank with a lean lambda value is detected; a step of performing CDA control on all cylinders of tanks with faults of oil control valve, and easily detecting the cylinder with faults of oil control valve; and a step of storing error codes, and turning on an engine check lamp.

Description

자동차의 ＣＤＡ 엔진용 오일제어밸브의 고장진단 방법{Method for On Board Diagnosis of OCV for automotive CDA engine}Fault diagnosis method of oil control valve for CDA engine of automobile {Method for On Board Diagnosis of OCV for automotive CDA engine}

도 1은 일반적인 자동차의 CDA 엔진을 나타내는 구성도이다. 1 is a block diagram showing a CDA engine of a typical vehicle.

도 2는 본 발명에 따른 자동차의 CDA 엔진용 오일제어밸브의 고장진단 로직을 나타내는 플로우챠트이다. 2 is a flowchart showing the failure diagnosis logic of the oil control valve for the CDA engine of the vehicle according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : ECU 11 : RFF(롤러 핑거 팔로우)10: ECU 11: RFF (roller finger follow)

12 : OCV(오일제어밸브)12: OCV (Oil Control Valve)

본 발명은 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법에 관한 것으로서, 엔진의 효율적이고 신뢰성 있는 진단이 신속히 이루어져 정상적인 CDA 작동을 구현할 수 있게 됨으로써, 엔진의 연비 및 출력을 향상시킬 수 있는 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법에 관한 것이다. The present invention relates to a method for diagnosing a failure of an oil control valve for a CDA engine of a vehicle. The present invention provides an efficient and reliable diagnosis of an engine and enables a normal CDA operation to be performed, thereby improving fuel efficiency and output of an engine. The present invention relates to a failure diagnosis method of an oil control valve for a CDA engine.

일반적으로, 실린더 디액티베이션(Cylinder De-Activation 이하,CDA) 즉, CDA는 제동시나 정속 주행시에 전체 실린더 중 일부를 휴지(deactivation)시키는 기술을 말하는 것으로, CDA 작동중에는 휴지 대상이 되는 실린더로의 연료 공급과 흡/배기 밸브들의 작동이 정지하게 된다.In general, the cylinder deactivation (CDA), or CDA, refers to a technique for deactivating a part of the entire cylinder during braking or at constant speed. The supply and intake / exhaust valves stop working.

첨부한 도 1의 V8 기통 엔진을 탑재한 자동차를 예로 들어 설명하면 다음과 같다.Referring to the vehicle equipped with the V8 cylinder engine of Figure 1 as an example.

차량이 주행상태에서 제동을 할때는 모든 기통을 작동시켜 동력을 발생시킬 이유가 없으므로, 각 뱅크(V형 엔진의 2분할 실린더블록)에서 2개 기통(2,3,5,8번)의 작동을 휴지시키고 나머지 2개씩(1,4,6,7번)의 기통만으로 엔진을 작동시킴으로써 연비의 향상을 도모하는 것이 바로 CDA이다.(6기통에서는 한쪽 뱅크의 3개 기통이 모두 휴지되고, 나머지 다른 한쪽 뱅크의 3개 기통이 작동된다.)When the vehicle is braking while driving, there is no reason to operate all cylinders to generate power. Therefore, the operation of two cylinders (Nos. 2, 3, 5 and 8) in each bank The CDA is designed to improve fuel efficiency by operating the engine with only two cylinders (1, 4, 6, 7). (In six cylinders, all three cylinders in one bank are stopped and the other Three cylinders in one bank are activated.)

또한, CDA는 차량 정속 주행시에도 적용될 수 있는데, 단지 이때는 4개의 기통만으로 정속주행에 필요한 출력을 발생시켜야 하므로 연료분사량과 흡입공기량을 증가시켜 8기통 전체 연소시보다 높은 연소압을 발생시켜야 하는 차이가 있을 뿐이다.In addition, the CDA can be applied to the vehicle at constant speed. In this case, only four cylinders should generate the power required for the constant speed driving. Therefore, the fuel injection amount and the intake air amount must be increased to generate a higher combustion pressure than the entire eight-cylinder combustion. There is only.

이와 같이, CDA 제어가 시행되면 양쪽 2개씩 총 4개 기통으로는 연료가 공급되지 않으므로 우선 연료소비량을 줄일 수 있을 뿐만 아니라, 정지되어 있는 실린더에서는 마찰에 의한 동력손실이 발생하지 않으므로 상당한 수준의 연비 이득을 얻을 수 있게 된다.As such, when the CDA control is implemented, fuel is not supplied to the four cylinders in each of the two sides, which not only reduces fuel consumption but also reduces the power consumption due to friction in the stationary cylinder. Benefits will be gained.

그런데, 자동차의 CDA 엔진에서 연료분사량을 조절하는 오일제어밸브는 고장 이 일어날 경우가 종종 발생하게 되는데, ECU(10)의 전기적인 신호로부터 전기장치 관련부인 솔레노이드 부분의 고장은 진단이 가능하지만, 전기장치 관련부 외에 유체기구 부분의 고장 진단은 불가능한 문제점이 있다.By the way, the oil control valve for controlling the fuel injection amount in the CDA engine of the car often occurs when the failure occurs, the failure of the solenoid part of the electrical device related to the electrical signal from the ECU 10 can be diagnosed, In addition to the device-related part, failure diagnosis of the fluid mechanism part is impossible.

따라서, 자동차의 CDA 엔진용 오일제어밸브의 기계적인 고장진단을 위한 제어로직이 요구된다. Therefore, a control logic for mechanical failure diagnosis of a CDA engine oil control valve is required.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위해 발명한 것으로서, CDA(Cylinder De-Activation) 엔진을 구성하는 부품 중, 오일제어밸브(OCV)의 기계적인 고장진단을 위해 제어로직이 필요한 바, HEM상태에서, 공기유량 센서(AFS)의 측정값으로부터 모델링된 흡기 매니폴드의 압력값과, 매니폴드압력 센서(MAPS)가 측정한 실제 흡기 매니폴드의 압력값에 차이가 발생할 경우, 이를 OCV의 고장으로 판단하여 양쪽 뱅크의 람다값을 비교하며, 람다값이 린(lean)하게 측정되는 뱅크가 파악되면 엔진을 FEM 상태로 전환한 다음, 고장이 발생되었다고 판단된 뱅크의 실린더를 CDA 제어를 시작하여 이로부터 OCV가 고장난 실린더를 용이하게 파악함으로써, 엔진의 효율적이고 신뢰성 있는 진단이 신속히 이루어져 정상적인 CDA 작동을 구현할 수 있게 되어 상당한 수준의 엔진 연비 이득을 얻을 수 있는 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법을 제공하는데 그 목적이 있다.Therefore, the present invention has been invented to solve the above problems, and among the components constituting the CDA (Cylinder De-Activation) engine, the control logic is required for the mechanical failure diagnosis of the oil control valve (OCV), In the HEM state, if there is a difference between the pressure value of the intake manifold modeled from the measured value of the air flow sensor (AFS) and the pressure value of the actual intake manifold measured by the manifold pressure sensor (MAPS), Determines the failure and compares the lambda values of both banks.If a bank whose lambda value is measured lean is found, the engine is switched to the FEM state, and CDA control is started for the cylinder of the bank determined to be the failure. From this, it is possible to easily identify the cylinder in which the OCV has failed, so that an efficient and reliable diagnosis of the engine can be performed quickly to realize normal CDA operation. To provide a method of diagnosis of CDA car to get the fuel economy benefits the engine oil control valve has a purpose.

이하, 상기와 같은 목적을 달성하기 위한 본 발명의 특징에 대해 설명하면 다음과 같다. Hereinafter, the features of the present invention for achieving the above object are as follows.

본 발명에 따른 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법은, HEM상태에서, 공기유량 센서(AFS)의 측정값으로부터 모델링된 흡기 매니폴드의 압력값과, 매니폴드압력 센서(MAPS)가 측정한 실제 흡기 매니폴드의 압력값의 차이를 계산하는 단계와;The failure diagnosis method of the oil control valve for a CDA engine of a vehicle according to the present invention includes a pressure value of an intake manifold modeled from a measured value of an air flow sensor (AFS) and a manifold pressure sensor (MAPS) in a HEM state. Calculating a difference between the measured pressure values of the actual intake manifolds;

상기 압력값의 차이가 한계값 이상일 경우, OCV의 고장으로 판단하고, 고장난 실린더를 선택하기 위해 양쪽 뱅크의 람다값을 비교하는 단계와;If the difference between the pressure values is greater than or equal to the threshold value, determining that the OCV is broken and comparing lambda values of both banks to select a failed cylinder;

람다값이 린(lean)하게 측정되는 뱅크가 파악되면 엔진을 FEM 상태로 전환하는 단계와;Switching the engine to the FEM state when the bank in which the lambda value is measured lean is found;

상기 OCV의 고장이 발생되었다고 판단된 뱅크의 모든 실린더를 CDA 제어를 시작하여 이로부터 OCV가 고장난 실린더를 용이하게 파악하는 단계와;Starting CDA control of all cylinders in the bank determined that the failure of the OCV has occurred and easily identifying the cylinders from which the OCV has failed;

이에 대한 고장코드를 저장하고, 엔진 체크등(MIL)을 점등하는 단계로 이루어진 것을 특징으로 한다. Storing the fault code for this, characterized in that consisting of the step of turning on the engine check light (MIL).

특히, 상기 CDA 제어는 상기 OCV를 작동하여 실린더에서의 연소 여부를 판단하되, 연료분사 및 점화 상태에서, 미연소되는 실린더를 정상 실린더로, 연소되는 실린더를 OCV가 고장난 실린더로 판단하는 것을 특징으로 한다. Particularly, the CDA control determines whether the cylinder is combusted by operating the OCV, but in the fuel injection and ignition state, the unburned cylinder is regarded as a normal cylinder, and the burned cylinder is determined as a cylinder having an OCV failure. do.

이하, 첨부도면을 참조하여 본 발명의 구성에 대해 상세하게 설명하면 다음과 같다. Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.

첨부한 도 1은 일반적인 자동차의 CDA 엔진을 나타내는 구성도이며, 도 2는 본 발명에 따른 자동차의 CDA 엔진용 오일제어밸브의 고장진단 로직을 나타내는 플로우챠트이다. 1 is a block diagram showing a CDA engine of a general vehicle, and FIG. 2 is a flowchart showing a failure diagnosis logic of an oil control valve for a CDA engine of a vehicle according to the present invention.

도 1에 도시된 바와 같이, 본 발명에 따른 CDA 엔진의 부품 중, 오일제어밸브(Oil Control Valve 이하,OCV)(12)는 ECU(10)의 명령에 의해 유압을 롤러 핑거 팔로우(Roller Finger Follow 이하,RFF)(11)에 공급하는 바, 상기 RFF(11)는 내부의 래치가 록킹해제되어 캠의 움직임이 밸브에 전달되지 않게 되어 해당 실린더 밸브가 절환되어 닫힌상태를 유지하게 된다.As shown in FIG. 1, of parts of a CDA engine according to the present invention, an oil control valve (OCV) 12 follows a roller finger follow by a command of an ECU 10. Hereinafter, as supplied to the RFF (11), the RFF 11 is unlocked inside the latch so that the cam movement is not transmitted to the valve so that the corresponding cylinder valve is switched to maintain the closed state.

즉, 해당 밸브가 닫힌상태가 되어 실린더에 연료공급이 차단되므로 실린더가 휴지(De-Activation)된다. That is, the valve is closed and the fuel supply to the cylinder is cut off, so the cylinder is de-activated.

이와 같이, 제동시나 정속 주행시에 전체 실린더 중 일부를 휴지시키는 CDA작동 모드, 즉 HEM(Half Engine Mode)시, 상기 OCV(12)의 기계적인 고장이 발생하게 되면 해당 RFF(11)로 유압이 정상적으로 전달되지 않게 된다.As described above, when a mechanical failure of the OCV 12 occurs during the CDA operation mode, that is, the HEM (Half Engine Mode), which stops a part of the entire cylinder during braking or constant speed driving, the hydraulic pressure is normally applied to the corresponding RFF 11. It will not be delivered.

이로 인해 HEM 모드시 해당 실린더의 밸브 작동이 절환되지 않아 연료분사 없이 공기가 계속 흡입되어 미연소된 채, 해당 뱅크의 촉매컨버터에 도달된 후 연소되어 촉매 온도를 과도하게 상승시켜 촉매 손상을 초래하게 된다.As a result, the valve operation of the cylinder is not switched in HEM mode, and the air is continuously inhaled without fuel injection and burned after reaching the catalytic converter in the bank, causing the catalyst temperature to rise excessively, causing catalyst damage. do.

이렇게 휴지되어야 할 실린더에 공기가 흡입되므로 정상적인 실린더에는 ECU(10)가 계산한 공기량보다 적은 공기가 흡입되므로 연료분사량 제어에 오류를 초래하여 리치(rich) 상태의 혼합기를 유발하게 된다.Since air is sucked into the cylinder to be stopped, air is sucked into the normal cylinder less than the amount of air calculated by the ECU 10, thereby causing an error in fuel injection amount control and causing a rich mixer.

이러한 OCV(12)의 고장이 발생되면 엔진 및 촉매의 손상을 방지할 수 있도록 CDA가 작동되지 않고 전체 실린더를 모두 사용하는 FEM(Full Enging Mode)로 전환 되어야 한다.If such a failure of the OCV 12 occurs, the CDA should be switched to a full engagement mode (FEM) using all the cylinders without the CDA to prevent damage to the engine and the catalyst.

따라서, 상기 OCV(12)의 기계적인 고장을 진단할 수 있는 제어로직이 필요한 바, 도 2에 도시된 바와 같이, CDA 작동모드인 HEM상태에서, 엔진으로 흡입되는 공기량을 측정하는 공기유량 센서(AFS)의 측정값으로부터 모델링된 흡기 매니폴드의 압력값과, 매니폴드압력 센서(MAPS)가 측정한 실제 흡기 매니폴드의 압력값의 차이를 계산하게 된다.Therefore, a control logic capable of diagnosing a mechanical failure of the OCV 12 is needed. As shown in FIG. 2, in the HEM state of the CDA operation mode, an air flow rate sensor for measuring the amount of air sucked into the engine ( The difference between the pressure value of the intake manifold modeled from the measured value of AFS) and the pressure value of the actual intake manifold measured by the manifold pressure sensor MAPS is calculated.

이때, 상기 OCV(12)의 고장이 발생하였다면 CDA 작동모드 시, 작동이 정지되어야할 실린더에 공기가 흡입되어 한계값 이상의 차이가 벌어지게 된다.At this time, if the failure of the OCV (12) occurs, in the CDA operation mode, the air is sucked into the cylinder to be stopped, the difference is greater than the limit value.

상기 OCV(12)의 고장 발생시, 양쪽 뱅크의 람다값을 비교하는 바, 고장이 없는 뱅크는 람다값이 리치(rich)하게 되고, 고장이 발생한 뱅크의 람다값은 린(lean)한 결과가 나오게 된다.When the failure of the OCV 12 occurs, the lambda values of both banks are compared, so that a bank without a failure has a rich lambda value, and a lambda value of the failed bank is leaned. do.

즉, V형 엔진의 모든 뱅크의 람다값이 린(lean)할 수 있거나, 좌우 어느 한쪽 뱅크의 람다값이 린(lean)할 수 있게 된다.That is, the lambda values of all banks of the V-type engine can be leaned, or the lambda values of either of the left and right banks can be leaned.

이로부터 고장이 발생한 뱅크를 판단하고, 고장이 발생한 뱅크가 파악되면 그 뱅크 중, 어떤 실린더가 고장이 발생하였는지 판단할 수 있도록 엔진이 일반적인 주행상태로 제어되는 FEM 상태로 전환되도록 한다.From this, the bank in which the failure occurs is determined, and when the bank in which the failure occurs is identified, the engine is switched to the FEM state in which the cylinder is controlled in a normal driving state so that it is possible to determine which cylinder among the banks has failed.

그리고, 고장이 발생되었다고 판단된 뱅크의 모든 실린더를 CDA 제어를 시작하여 해당 실린더의 밸브 절환 명령을 내린다.Then, CDA control is started for all cylinders in the bank that are determined to have failed, and a valve switching command of the cylinders is issued.

첨부한 도면을 참조하여 더욱 상세하게 설명하면, 우측 뱅크의 람다값이 린(lean)할 경우, 그 우측 뱅크의 3번 및 5번 실린더에서 CDA 제어를 실시하여 OCV(12)를 작동하고, 이를 통해 실린더의 연소 여부를 판단하게 되는데, 이때 엔진에서는 연료 분사 및 점화가 실행되므로 정상 실린더에서는 연소를 하지 않게 되지만, 고장난 실린더에서는 연소를 하게 되어 이로부터 OCV(12)가 고장난 실린더를 파악할 수 있게 된다. In more detail with reference to the accompanying drawings, when the lambda value of the right bank is lean, CDA control is performed in cylinders 3 and 5 of the right bank to operate the OCV 12, In this case, it is determined whether the cylinder is burned. At this time, since the fuel injection and ignition are performed in the engine, the combustion is not performed in the normal cylinder, but the combustion is performed in the failed cylinder so that the OCV 12 can identify the failed cylinder. .

이후, ECU(10)는 고장코드를 저장하고, 엔진 체크등을 점등하여 운전자에게 이를 알리게 된다. Thereafter, the ECU 10 stores the fault code and turns on the engine check lamp to inform the driver of this.

이후, 좌측 뱅크의 람다값도 린(lean)할 경우, 2번 및 8번 실린더에서 CDA 제어를 실시하게 되고, 이를 통해 OCV(12)가 고장난 실린더를 용이하게 파악하게 되면 고장코드를 저장하고, 엔진 체크등을 점등하여 운전자에게 이를 알리게 된다. Afterwards, when the lambda value of the left bank is also leaned, CDA control is performed in cylinders 2 and 8, and when the OCV 12 easily identifies the failed cylinder, the fault code is stored. The engine check lamp lights up to inform the driver.

이와 같이, 본 발명에 따른 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법은 엔진의 효율적이고 신뢰성 있는 진단이 이루어지며, OCV(12)의 고장 발생시 이를 용이하여 판단하여 신속히 수리 가능하므로 상당한 수준의 엔진 연비 이득을 얻을 수 있게 된다.As described above, the method of diagnosing the oil control valve for the CDA engine of the vehicle according to the present invention is performed in an efficient and reliable diagnosis of the engine, and when a failure of the OCV 12 occurs, it can be easily determined and quickly repaired. Engine fuel efficiency gains can be obtained.

상술한 바와 같이, 본 발명에 따른 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법에 의하면, 엔진의 효율적이고 신뢰성 있는 진단이 신속히 이루어져 정상적인 CDA 작동을 구현할 수 있게 됨으로써, 엔진의 연비 및 출력을 향상시킬 수 있는 효과가 있다. As described above, according to the failure diagnosis method of the oil control valve for the CDA engine of the vehicle according to the present invention, it is possible to implement the normal CDA operation by performing an efficient and reliable diagnosis of the engine quickly, thereby improving the fuel economy and output of the engine It can be effected.

Claims (2)

HEM상태에서, 공기유량 센서(AFS)의 측정값으로부터 모델링된 흡기 매니폴드의 압력값과, 매니폴드압력 센서(MAPS)가 측정한 실제 흡기 매니폴드의 압력값의 차이를 계산하는 단계와;Calculating the difference between the pressure value of the intake manifold modeled from the measured value of the air flow sensor AFS and the pressure value of the actual intake manifold measured by the manifold pressure sensor MAPS in the HEM state; 상기 압력값의 차이가 한계값 이상일 경우, OCV의 고장으로 판단하고, 고장난 실린더를 선택하기 위해 양쪽 뱅크의 람다값을 비교하는 단계와;If the difference between the pressure values is greater than or equal to the threshold value, determining that the OCV is broken and comparing lambda values of both banks to select a failed cylinder; 람다값이 린(lean)하게 측정되는 뱅크가 파악되면 엔진을 FEM 상태로 전환하는 단계와;Switching the engine to the FEM state when the bank in which the lambda value is measured lean is found; 상기 OCV의 고장이 발생되었다고 판단된 뱅크의 모든 실린더를 CDA 제어를 시작하여 이로부터 OCV가 고장난 실린더를 용이하게 파악하는 단계와;Starting CDA control of all cylinders in the bank determined that the failure of the OCV has occurred and easily identifying the cylinders from which the OCV has failed; 이에 대한 고장코드를 저장하고, 엔진 체크등(MIL)을 점등하는 단계로 이루어진 것을 특징으로 하는 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법.A method of diagnosing a failure of an oil control valve for a CDA engine of a vehicle, characterized by storing a fault code and turning on an engine check lamp (MIL). 청구항 1에 있어서,The method according to claim 1, 상기 CDA 제어는 상기 OCV를 작동하여 실린더에서의 연소 여부를 판단하되, 연료분사 및 점화 상태에서, 미연소되는 실린더를 정상 실린더로, 연소되는 실린더를 OCV가 고장난 실린더로 판단하는 것을 특징으로 하는 자동차의 CDA 엔진용 오일제어밸브의 고장진단 방법.The CDA control operation of the OCV to determine whether the combustion in the cylinder, in the fuel injection and ignition state, the vehicle, characterized in that the unburned cylinder as a normal cylinder, the burning cylinder as a cylinder OCV failure To troubleshoot the oil control valve for the CDA engine.
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Publication number Priority date Publication date Assignee Title
CN109812314A (en) * 2017-11-20 2019-05-28 现代自动车株式会社 For controlling the system of variable air valve apparatus and the oil control valve of the system
KR20200043194A (en) * 2018-10-17 2020-04-27 현대자동차주식회사 Apparatus for controlling cylinder de-activation of engine and method thereof

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DE19857183A1 (en) 1998-12-11 2000-06-15 Bosch Gmbh Robert Diagnosis of a variable valve control in internal combustion engines
DE19963638A1 (en) 1999-12-29 2001-07-12 Bosch Gmbh Robert Monitoring function of cylinder cut-off for multicylinder internal combustion engines involves comparing signals representing engine air flow, assessing discrepancy as functional fault
JP3701592B2 (en) 2001-09-14 2005-09-28 本田技研工業株式会社 Failure detection device for deceleration cylinder-removed engine vehicle
JP4011514B2 (en) 2003-03-18 2007-11-21 本田技研工業株式会社 Cylinder operation control device for internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109812314A (en) * 2017-11-20 2019-05-28 现代自动车株式会社 For controlling the system of variable air valve apparatus and the oil control valve of the system
CN109812314B (en) * 2017-11-20 2021-12-21 现代自动车株式会社 System for controlling variable valve apparatus and oil control valve of the system
KR20200043194A (en) * 2018-10-17 2020-04-27 현대자동차주식회사 Apparatus for controlling cylinder de-activation of engine and method thereof

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