KR20110058964A - Method for aging judgment of flexible fuel system - Google Patents

Method for aging judgment of flexible fuel system Download PDF

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KR20110058964A
KR20110058964A KR1020090115530A KR20090115530A KR20110058964A KR 20110058964 A KR20110058964 A KR 20110058964A KR 1020090115530 A KR1020090115530 A KR 1020090115530A KR 20090115530 A KR20090115530 A KR 20090115530A KR 20110058964 A KR20110058964 A KR 20110058964A
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fuel
fuel system
learning
aging
result
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KR1020090115530A
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Korean (ko)
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KR101068610B1 (en
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이정주
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주식회사 케피코
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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
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0652—Biofuels, e.g. plant oils
    • F02D19/0655—Biofuels, e.g. plant oils at least one fuel being an alcohol, e.g. ethanol
    • 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
    • F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0611—Fuel type, fuel composition or fuel quality
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

PURPOSE: A flexible fuel system aging judging method is provided to diagnose accurate on-board diagnostics and to diagnose the aging of a fuel gauge. CONSTITUTION: A flexible fuel system aging judging method comprises next steps. Fuel supply is checked(S10). If it monitors that the fuel is charged, ethanol content is studied(S20). If it monitors that the fuel is not charged, the state of the fuel system is studied(S30). The aging of the fuel gauge is determined based on the study result of the fuel system state excluding ethanol content(S40).

Description

가변식 연료 시스템의 노화 판단 방법{Method for aging judgment of flexible fuel system} Method for aging judgment of flexible fuel system

본 발명은 가변식 연료 시스템의 노화 판단 방법에 관한 것으로서, 보다 상세하게는 가변식 연료 시스템이 적용된 차량에 있어서, 에탄올 함률 학습 및 에탄올 함률이 배제된 연료시스템 상태의 학습결과에 기초하여, 해당 차량의 연료계에 대한 노화여부를 판단함으로써, OBD법규에 따른 오감지를 방지할 수 있도록 한 가변식 연료 시스템의 노화 판단 방법에 관한 것이다.The present invention relates to a method for determining aging of a variable fuel system, and more particularly, in a vehicle to which a variable fuel system is applied, based on a learning result of a ethanol content learning and a fuel system state in which the ethanol content is excluded, The present invention relates to a method for determining aging of a variable fuel system capable of preventing erroneous detection according to OBD regulations by determining whether the fuel system is aged.

일반적으로, 자동차(이하, 차량과 혼용함)라 함은 원동기를 사용하여 궤조 또는 가선에 의하지 않고 운전되는 운송기계로서, 그 구성으로는 엔진, 연료공급장치, 동력전달장치, 현가 및 조향장치, 제동장치, 배출장치, 공조장치, 냉각 및 윤활장치 등이 있으며, 주로 승객이나 화물의 운송을 위하여 사용되고 있다.In general, a vehicle (hereinafter referred to as a vehicle) refers to a transport machine that is driven by a prime mover without a railroad track or railroad line, and includes an engine, a fuel supply device, a power transmission device, a suspension and steering device, Braking system, exhaust system, air conditioning system, cooling and lubrication system, etc., are mainly used for the transportation of passengers or cargo.

그리고, 차량은 그 연료의 종류에 따라 디젤차량, 가솔린차량, LPG차량 등으로 구분되며, 최근에는 환경문제 등으로 인하여 LPG차량이 증가되고 있는 추세이다.The vehicle is classified into a diesel vehicle, a gasoline vehicle, an LPG vehicle, and the like according to the type of fuel. Recently, LPG vehicles are increasing due to environmental problems.

한편, LPG차량의 경우, 연료의 에탄올 함량이 높아지면 엔진의 성능 및 수명 에 영향을 미치게 된다.On the other hand, in the case of LPG vehicles, higher ethanol content of the fuel will affect the performance and life of the engine.

예를 들어, 이론 공연비의 차이로 인하여 연료량 학습값에 변화가 발생되어 비정상적인 연소가 발생되고, 에탄올의 낮은 기화성으로 인해 시동성과 가속감이 저하되어 주행성능을 악화시키게 된다.For example, a difference in the theoretical air-fuel ratio causes a change in the fuel amount learning value, resulting in abnormal combustion, and due to the low vaporization of ethanol, startability and acceleration are deteriorated, thereby deteriorating driving performance.

특히, 비정상적인 연소 및 주행성능의 악화로 인하여 메탄올과 에탄올의 함량이 규정치보다 높게 함유된 연료를 사용하는 경우 OBD진단에서 오진단이 발생되고, 불안정연소로 인하여 촉매가 손상되는 문제점이 발생된다.In particular, when using a fuel containing methanol and ethanol content higher than the prescribed value due to abnormal combustion and deterioration of running performance, misdiagnosis occurs in OBD diagnosis, and the catalyst is damaged due to unstable combustion.

상기와 같은 문제점을 해결하기 위해서, 본 발명은 LPG차량에 있어서, 에탄올 학습치와 연료시스템 학습치를 계산하여, 정확한 OBD진단이 이루어질 수 있도록 하는 가변식 연료 시스템의 노화 판단 방법을 제공하는데 목적이 있다. In order to solve the above problems, an object of the present invention is to provide a method for determining the aging of a variable fuel system to calculate the ethanol learning value and the fuel system learning value in the LPG vehicle, so that accurate OBD diagnosis can be made. .

특히, 연료의 주입여부에 따라 에탄올 학습치와 연료시스템 학습치를 분리하여 계산함으로써, 보다 정확한 OBD진단이 이루어질 수 있도록 하는 가변식 연료 시스템의 노화 판단 방법을 제공하는데 목적이 있다.In particular, it is an object of the present invention to provide a method for determining the aging of a variable fuel system that allows the accurate OBD diagnosis to be made by separately calculating the ethanol learning value and the fuel system learning value according to whether fuel is injected.

상기와 같은 목적을 달성하기 위해서, 본 발명에 따른 가변식 연료 시스템의 노화 판단 방법은, 가변식 연료 시스템이 탑재된 차량의 연료계에 대한 노화여부를 판단하는 방법에 있어서, a) 연료주입여부를 확인하는 단계; b) 상기 확인결과, 연료가 주입된 경우, 에탄올 함률을 학습하는 단계; c) 상기 확인결과, 연료가 주입되지 않은 경우, 연료시스템의 상태를 학습하는 단계; 및 d) 상기 에탄올 함률이 배제된 연료시스템 상태의 학습결과에 기초하여, 연료계의 노화여부를 판단하는 단계를 포함하여 이루어진 것을 특징으로 한다.In order to achieve the above object, the aging determination method of the variable fuel system according to the present invention, a method for determining whether the fuel system of the vehicle equipped with a variable fuel system aging whether a) fuel injection or not Confirming; b) learning the ethanol content when the fuel is injected, as a result of the checking; c) learning the state of the fuel system when no fuel is injected as a result of the checking; And d) determining whether the fuel system is aging based on the learning result of the fuel system state in which the ethanol content is excluded.

바람직하게는, 상기 단계 b)가, b-1) 연료 주입을 감지하는 과정; b-2) 기준연료량에 대한 에탄올의 비율을 산출하는 과정; b-3) 상기 산출된 결과값과 안정화 범위와 비교하는 과정; 및 b-4) 상기 비교결과 안정화 범위에 포함되면 학습을 완료하고, 안정화 범위에 포함되지 않으면 학습을 계속 진행하는 과정을 포함하는 것 을 특징으로 한다.Preferably, the step b), b-1) detecting the fuel injection; b-2) calculating the ratio of ethanol to the reference fuel amount; b-3) comparing the calculated result with a stabilization range; And b-4) if the comparison result is included in the stabilization range, learning is completed, and if it is not included in the stabilization range, the learning is continued.

보다 바람직하게는, 상기 단계 c)가, c-1) 공연비를 감지하는 과정; c-2) 상기 감지결과에 대응하는 감지신호를 수신하는 과정; c-3) 상기 수신된 신호를 필터링하여 데이터를 산출하는 과정; c-4) 상기 산출된 데이터를 누적저장하는 과정; c-5) 상기 누적저장된 데이터와 기준값을 비교하는 과정; 및 c-6) 상기 비교결과 기준값의 범위에 포함되면 정상으로 판정하고, 기준값의 범위에 포함되지 않으면 비정상으로 판정하는 과정을 포함하는 것을 특징으로 한다.More preferably, the step c), c-1) detecting the air-fuel ratio; c-2) receiving a detection signal corresponding to the detection result; c-3) calculating data by filtering the received signal; c-4) accumulating and storing the calculated data; c-5) comparing the accumulated and stored data with a reference value; And c-6) determining to be normal when included in the range of the reference value, and determining to be abnormal when not included in the range of the reference value.

상기와 같은 해결수단에 의해, 본 발명은 가변식 연료 시스템이 적용된 차량에 있어서, 에탄올 함률이 배제된 연료시스템 상태의 학습결과에 기초하여, 연료레일과 인젝터라인 및 연료펌프라인 등을 포함하는 해당 차량의 연료계에 대한 노화여부를 정확히 판단할 수 있는 장점이 있다.By means of the above solution, the present invention, in the vehicle to which the variable fuel system is applied, based on the learning result of the fuel system state ethanol content is excluded, including the fuel rail, injector line, fuel pump line, etc. There is an advantage that can accurately determine whether the fuel gauge of the vehicle is aging.

특히, 본 발명은 특히, 연료의 주입여부에 따라 에탄올 함률 학습치와 연료시스템 학습치를 분리하여 계산함으로써, 보다 정확한 OBD진단이 이루어질 수 있는 효과가 있다.In particular, the present invention, by calculating the ethanol content learning value and the fuel system learning separately according to whether the fuel is injected, there is an effect that can be made more accurate OBD diagnosis.

따라서, 연료레일과 인젝터라인 및 연료펌프라인 등을 포함하는 연료계의 노화여부를 정확히 판단함은 물론, 이를 통하여 OBD법규에 따른 오감지를 방지함으로써, 해당 분야의 제품에 대한 경쟁력을 향상시킬 수 있는 것이다.Therefore, it is possible to accurately determine whether the fuel system including fuel rails, injector lines, and fuel pump lines are aged, and to prevent erroneous detection according to OBD regulations through this, thereby improving competitiveness of products in the relevant field. will be.

본 발명에 따른 가변식 연료 시스템의 노화 판단 방법에 대한 예는 다양하게 적용할 수 있으며, 이하에서는 첨부된 도면을 참조하여 가장 바람직한 실시 예에 대해 설명하기로 한다.An example of the aging determination method of the variable fuel system according to the present invention can be variously applied, and hereinafter, the most preferred embodiment will be described with reference to the accompanying drawings.

먼저, 본 발명에 의한 노화 판단 방법이 적용되는 가변식 연료 시스템이 탑재된 차량의 상태를 감지하는 센서, 노화 판단 방법을 수행하는 데이터처리모듈, 제어유닛에 탑재된 알고리즘 등은 당업자의 요구에 따라 다양한 변형이 가능하므로, 특정한 것에 한정하지 않음은 당연하다.First, a sensor for detecting a state of a vehicle equipped with a variable fuel system to which the aging determination method according to the present invention is applied, a data processing module for performing the aging determination method, an algorithm mounted on a control unit, etc. are required by those skilled in the art. Various modifications are possible, of course, not limited to the specific one.

도 1은 본 발명에 의한 가변식 연료 시스템의 노화 판단 방법의 예를 나타낸 흐름도이다.1 is a flowchart illustrating an example of a method for determining aging of a variable fuel system according to the present invention.

가변식 연료 시스템이 탑재된 차량이 시동되면, 연료탱크에 설치된 센서를 통해 연료주입여부를 확인한다(S10).When the vehicle equipped with the variable fuel system is started, it is checked whether the fuel is injected through a sensor installed in the fuel tank (S10).

상기와 같이 연료주입여부를 확인하는 이유에 대해 살펴보면, 연료계에 대한 노화학습이 진행되고 안정화된 상태에서, 새로운 연료가 주입되면 연료계 노화학습을 위한 피드백(Feedback) 제어값이 급격하게 변화하게 되며, 이러한 경우 정상적인 경우에도 연료계가 노화된 것으로 판단할 수 있으므로, 이를 방지하기 위한 것이다.Looking at the reason for confirming the fuel injection as described above, in the state of stabilization of the fuel system is progressed and stabilized, when the new fuel is injected, the feedback control value for the fuel system is not changed rapidly. In this case, since the fuel system can be determined to be aging even in a normal case, it is to prevent this.

상기 확인결과, 연료가 주입된 경우에는, 공급되는 연료에 포함된 에탄올 함률을 학습하고(S20), 연료가 주입되지 않은 경우에는, 연료시스템의 상태를 학습한다(S30).As a result of the checking, when fuel is injected, the ethanol content contained in the supplied fuel is learned (S20), and when the fuel is not injected, the state of the fuel system is learned (S30).

상기와 같은 학습이 완료되면, 상기 에탄올 함률이 배제된 연료시스템 상태의 학습결과에 기초하여, 연료계의 노화여부를 판단한다(S40).When the learning as described above is completed, it is determined whether the fuel system is aging based on the learning result of the fuel system state in which the ethanol content is excluded (S40).

상기와 같은 가변식 연료 시스템의 노화 판단 방법에 있어서, 에탄올 함률 학습방법을 보다 상세히 살펴보면 도 2에 나타난 바와 같다.In the aging determination method of the variable fuel system as described above, the ethanol content learning method is shown in FIG. 2 in more detail.

다시 말해, 연료가 주입된 경우에는, 공급되는 연료에 포함된 에탄올 함률을 감지한다(S21).In other words, when fuel is injected, the ethanol content contained in the supplied fuel is sensed (S21).

그리고, 상기 산출된 결과값과 안정화 범위와 비교한 후(S23), 상기 비교결과, 산출된 결과값이 안정화 범위에 포함되면(S24) 학습을 완료하고(S25), 안정화 범위에 포함되지 않으면(24) 학습을 계속 진행한다(S26).Then, after comparing the calculated result with the stabilization range (S23), if the comparison result, the calculated result is included in the stabilization range (S24) to complete the learning (S25), if not included in the stabilization range ( 24) continue learning (S26).

여기서, 상기 안정화 범위는 차량의 성능에 영향을 주지 않는 최대 변화 폭을 말하며, 차량의 종류 및 당업자의 요구에 따라 다양한 범위로 설정될 수 있음은 당연하다.Here, the stabilization range refers to the maximum change width that does not affect the performance of the vehicle, it is natural that can be set in various ranges according to the type of vehicle and the needs of those skilled in the art.

그리고, 상기와 같은 가변식 연료 시스템의 노화 판단 방법에 있어서, 연료시스템의 상태에 대한 학습방법을 보다 상세히 살펴보면 도 3에 나타난 바와 같다.In addition, in the aging determination method of the variable fuel system as described above, the learning method for the state of the fuel system will be described in more detail as shown in FIG. 3.

다시 말해, 연료가 주입되지 않은 경우, 배기가스에 포함된 산소량을 감지하는 센서를 통해 공연비를 감지한 후(S31), 상기 감지결과에 대응하는 감지신호가 수신되면(S32), 상기 수신된 신호를 필터링하여 데이터를 산출한다(S33).In other words, when fuel is not injected, after detecting the air-fuel ratio through a sensor for detecting the amount of oxygen contained in the exhaust gas (S31), if a detection signal corresponding to the detection result is received (S32), the received signal Filtering to calculate the data (S33).

그리고, 상기 산출된 데이터를 일정기간동안 누적저장한 후(S34), 상기 누적저장된 데이터와 기준값을 비교한다(S35).After accumulating and storing the calculated data for a predetermined period of time (S34), the cumulatively stored data is compared with a reference value (S35).

여기서, 상기 기준값은 정상적인 성능과 배기가스 규제치를 만족시킬 수 있는 연료계의 노화정도를 말한다.Here, the reference value refers to the degree of aging of the fuel system that can satisfy the normal performance and exhaust gas regulation value.

상기 비교결과, 누적되어 학습된 데이터가, 기준값을 중심으로 오차범위에 포함되면(S36) 정상으로 판정하고(S37), 기준값의 범위에 포함되지 않으면(S36) 비정상으로 판정한다(S38).As a result of the comparison, if the accumulated and learned data are included in the error range around the reference value (S36), it is determined to be normal (S37), and if it is not included in the range of the reference value (S36), it is determined to be abnormal (S38).

그리고, 상기 에탄올 함률 학습방법과 연료시스템의 상태에 대한 학습방법은 동시에 수행할 수도 있으나, 융합하여 계산하지는 않는다.The ethanol content learning method and the learning method for the state of the fuel system may be performed at the same time, but are not calculated by fusion.

만약, 융합하여 계산하게 될 경우, 에탄올 함률에 의하여 연료시스템의 노화학습 요인이 일정범위이상으로 벗어나는 경우가 발생하기 때문이다.If it is calculated by fusion, it is because the chemistry of ethanol content causes the chemistry factor of fuel system to deviate more than a certain range.

따라서, 바람직하게는 본 발명에 의한 연료가 공급된 직후에는 에탄올 함률 학습방법으로 학습하고, 이를 제외한 경우에 연료시스템의 상태에 대한 학습방법으로 연료계의 노화를 판단함으로써, 보다 정확한 OBD진단이 이루어질 수 있도록 할 수 있는 것이다.Therefore, preferably, immediately after the fuel is supplied according to the present invention, by learning the ethanol content learning method, except for this, by determining the aging of the fuel system as a learning method for the state of the fuel system, a more accurate OBD diagnosis is made You can do it.

이상에서 본 발명에 의한 가변식 연료 시스템의 노화 판단 방법에 대하여 설명하였다. 이러한 본 발명의 기술적 구성은 본 발명이 속하는 기술분야의 당업자가 본 발명의 그 기술적 사상이나 필수적 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다.The aging determination method of the variable fuel system according to the present invention has been described above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

그러므로 이상에서 기술한 실시 예들은 모든 면에서 예시적인 것이며, 한정적인 것이 아닌 것으로서 이해되어야 하고, 본 발명의 범위는 전술한 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 등가개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept should be construed as being included in the scope of the present invention.

도 1은 본 발명에 의한 가변식 연료 시스템의 노화 판단 방법의 예를 나타낸 흐름도이다.1 is a flowchart illustrating an example of a method for determining aging of a variable fuel system according to the present invention.

도 2는 도 1의 에탄올 학습방법의 예를 보다 상세히 나타낸 순서도이다.FIG. 2 is a flowchart illustrating an example of the ethanol learning method of FIG. 1 in more detail.

도 3은 도 1의 연료시스템 학습방법의 예를 보다 상세히 나타낸 순서도이다.3 is a flowchart illustrating an example of a fuel system learning method of FIG. 1 in more detail.

Claims (3)

가변식 연료 시스템이 탑재된 차량의 연료계에 대한 노화여부를 판단하는 방법에 있어서,In the method of determining whether the fuel gauge of the vehicle equipped with a variable fuel system aging, a) 연료주입여부를 확인하는 단계;a) checking whether fuel is injected; b) 상기 확인결과, 연료가 주입된 경우, 에탄올 함률을 학습하는 단계;b) learning the ethanol content when the fuel is injected, as a result of the checking; c) 상기 확인결과, 연료가 주입되지 않은 경우, 연료시스템의 상태를 학습하는 단계; 및c) learning the state of the fuel system when no fuel is injected as a result of the checking; And d) 상기 에탄올 함률이 배제된 연료시스템 상태의 학습결과에 기초하여, 연료계의 노화여부를 판단하는 단계를 포함하여 이루어진 가변식 연료 시스템의 노화 판단 방법.and d) determining whether the fuel system is aging based on the learning result of the fuel system state excluding the ethanol content. 제 1항에 있어서,The method of claim 1, 상기 단계 b)는,Step b), b-1) 에탄올 함률을 감지하는 과정;b-1) detecting the ethanol content; b-2) 기준연료량에 대한 에탄올의 비율을 산출하는 과정;b-2) calculating the ratio of ethanol to the reference fuel amount; b-3) 상기 산출된 결과값과 안정화 범위와 비교하는 과정; 및b-3) comparing the calculated result with a stabilization range; And b-4) 상기 비교결과 안정화 범위에 포함되면 학습을 완료하고, 안정화 범위에 포함되지 않으면 학습을 계속 진행하는 과정을 포함하는 것을 특징으로 하는 가변식 연료 시스템의 노화 판단 방법.b-4) the aging determination method of the variable fuel system comprising the step of continuing the learning if the learning is completed, if not included in the stabilization range of the comparison result. 제 1항에 있어서,The method of claim 1, 상기 단계 c)는,Step c) is c-1) 공연비를 감지하는 과정;c-1) detecting the air-fuel ratio; c-2) 상기 감지결과에 대응하는 감지신호를 수신하는 과정;c-2) receiving a detection signal corresponding to the detection result; c-3) 상기 수신된 신호를 필터링하여 데이터를 산출하는 과정;c-3) calculating data by filtering the received signal; c-4) 상기 산출된 데이터를 누적저장하는 과정;c-4) accumulating and storing the calculated data; c-5) 상기 누적저장된 데이터와 기준값을 비교하는 과정; 및c-5) comparing the accumulated and stored data with a reference value; And c-6) 상기 비교결과 기준값의 범위에 포함되면 정상으로 판정하고, 기준값의 범위에 포함되지 않으면 비정상으로 판정하는 과정을 포함하는 것을 특징으로 하는 가변식 연료 시스템의 노화 판단 방법.c-6) determining whether the comparison result is normal when included in the range of the reference value, and determining that it is abnormal when not included in the range of the reference value.
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KR20160006270A (en) * 2014-07-07 2016-01-19 현대오트론 주식회사 Method for learning fuel ratio of flexible fuel vehicle and apparatus thereof
CN110907190A (en) * 2019-11-06 2020-03-24 清华大学 Method for judging OBD remote online monitoring data quality

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KR101302768B1 (en) * 2007-07-30 2013-09-02 현대자동차주식회사 Apparatus and method for analyzing ratio of ethanol-fuel and determining fuel increase
DE102007042992A1 (en) 2007-09-10 2009-03-12 Robert Bosch Gmbh Method for determining an ethanol content of a fuel
JP2009074367A (en) 2007-09-18 2009-04-09 Yamaha Motor Co Ltd Controller of internal combustion engine and saddle-riding vehicle having the same
KR101282681B1 (en) * 2007-12-13 2013-07-12 현대자동차주식회사 Testing system corrosion resistance of vehicle fuel system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160006270A (en) * 2014-07-07 2016-01-19 현대오트론 주식회사 Method for learning fuel ratio of flexible fuel vehicle and apparatus thereof
CN110907190A (en) * 2019-11-06 2020-03-24 清华大学 Method for judging OBD remote online monitoring data quality
CN110907190B (en) * 2019-11-06 2020-10-09 清华大学 Method for judging OBD remote online monitoring data quality

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