公开(公告)号：KR1020030017672A

公开(公告)日：2003-03-04

申请号：KR1020010050297

申请日：2001-08-21

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02D41/04

CPC classification number: F02D41/222 ,  F02D9/105 ,  F02D41/107 ,  F02D2200/0404

Abstract: PURPOSE: A method for controlling trouble for throttle position sensor is provided to control fuel by detecting the acceleration and the deceleration of an engine with a signal of an HFM(Hot Film type Air flow sensor) at defect of a throttle position sensor. CONSTITUTION: In discriminating as a short by checking an input signal from a throttle position sensor(S110), the high load area of an engine is checked based on the temperature of coolant and of inflow air(S110). In discriminating as the high load area, an HFM is read and filtered(S130,S140). A compensation air amount is operated based on the filtered HFM signal(S150). An amplitude for the HFM signal is operated and an amplitude change amount of the HFM is operated for the operated amplitude(S160,S170). The amplitude change amount is compared with a first reference value(S180). If the amplitude change amount is larger than the first reference value, a changed amount of the filtered HFM signal is operated(S190). If the changed amount of the HFM signal is larger than a second reference value(S200), a fuel compensation is performed with an accelerating fuel amount by discriminating as an acceleration(S210,S220). If the amplitude change amount is smaller than the first reference value, the amplitude change amount is compared with a third reference value(S230). If the amplitude change amount is smaller than the third reference value, the changed amount of the HFM signal is operated. If the changed amount of the HFM signal is smaller than a fourth reference value(S250), the fuel compensation is performed with a decelerating fuel amount by discriminating as a deceleration(S260,S270). Thereby, the stop of the engine is prevented.

Abstract translation: 目的：提供一种用于控制节气门位置传感器故障的方法，通过在节气门位置传感器的缺陷处检测到具有HFM（热胶膜型气流传感器）的信号的发动机的加速度和减速度来控制燃料。 构成：通过检查来自节气门位置传感器的输入信号来识别为短路（S110），基于冷却剂和流入空气的温度来检查发动机的高负荷面积（S110）。 在识别为高负载区域时，HFM被读取和滤波（S130，S140）。 基于被滤波的HFM信号来操作补偿空气量（S150）。 操作HFM信号的振幅，并对操作振幅操作HFM的幅度变化量（S160，S170）。 将振幅变化量与第一基准值进行比较（S180）。 如果振幅变化量大于第一参考值，则操作经滤波的HFM信号的改变量（S190）。 如果HFM信号的改变量大于第二基准值（S200），则通过将加速度判定为加速度来进行燃料补偿（S210，S220）。 如果振幅变化量小于第一基准值，则将振幅变化量与第三基准值进行比较（S230）。 如果振幅变化量小于第三参考值，则操作HFM信号的改变量。 如果HFM信号的改变量小于第四基准值（S250），则通过将减速判定为减速来执行燃料补偿（S260，S270）。 由此，能够防止发动机停止。

公开(公告)号：KR100371538B1

公开(公告)日：2003-02-07

申请号：KR1020000072575

申请日：2000-12-01

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02D41/04

Abstract: PURPOSE: A calculating method of fuel temperature for a vehicle is provided to cut down expenses by operating the initial value of fuel temperature with modeling soak time according to coolant temperature, and by operating fuel temperature during traveling with compensating the return amount of fuel and external air temperature. CONSTITUTION: The operation of an engine is detected(S10), and temperature of coolant is read after operating the engine(S11). Soak time is modeled based on coolant temperature(S12), and compared with the critical value(S13). The initial value of fuel temperature is operated with reading suction air temperature in case of the soak time to be over the critical value(S15), and external air is modeled(S16). The present fuel amount in a fuel tank is measured by reading a fuel level signal(S18), and the fuel amount consumed in a driving cycle is operated(S19). The fuel amount returned to the fuel tank is operated(S20), and the fuel temperature is compensated by calculating the return amount of fuel(S22). Fuel temperature is compensated according to external air temperature(S23), and the fuel temperature is calculated with adding the compensated fuel temperature according to the fuel amount to the compensated temperature according to external air temperature(S24). Expenses are reduced with calculating the fuel temperature during traveling.

Abstract translation: 目的：提供一种车辆燃料温度的计算方法，通过根据冷却剂温度以建模保温时间操作燃料温度的初始值以及通过在补偿燃料的返回量和外部的情况下在行驶期间操作燃料温度来降低费用 气温。 构成：检测发动机的运转（S10），在发动机运转后读取冷却液的温度（S11）。 根据冷却液温度对保温时间进行建模（S12），并与临界值（S13）进行比较。 在保温时间超过临界值（S15）并且外部空气建模（S16）的情况下，读取吸入空气温度来操作燃料温度的初始值。 通过读取燃料水平信号来测量燃料箱中的当前燃料量（S18），并且操作驾驶循环中消耗的燃料量（S19）。 返回到燃料箱的燃料量被操作（S20），并且通过计算燃料的返回量来补偿燃料温度（S22）。 根据外部气温对燃料温度进行补偿（S23），根据外部气体温度将补偿后的燃料温度与补偿后的温度相加来计算燃料温度（S24）。 通过计算行驶期间的燃油温度来减少费用。

公开(公告)号：KR1020020085914A

公开(公告)日：2002-11-18

申请号：KR1020010025429

申请日：2001-05-10

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02D45/00

CPC classification number: F02D41/222 ,  F01P11/16 ,  F01P2031/00

Abstract: PURPOSE: A thermostat diagnosis is carried out considering outer air temperature and a blower operating state not to misjudge disorder of the thermostat. CONSTITUTION: A valve opening delay time is determined by measuring coolant temperature at starting. Then, A compensation of the valve opening delay time is carried out considering an engine load state by calculating intake air amount. The compensated valve opening delay time is reduced in real time, then a monitoring condition is decided by soak time. If it is a monitoring condition, outer air temperature is calculated from the intake air temperature. A coolant temperature is measured when the valve opening delay time had elapsed. If the coolant temperature is less than the valve opening temperature, it is decided as a disorder.

Abstract translation: 目的：考虑外部空气温度和鼓风机运行状态，不要误判恒温器的紊乱，进行恒温器诊断。 构成：阀门开启延迟时间通过测量启动时的冷却液温度来确定。 然后，考虑到通过计算进气量的发动机负载状态来进行阀打开延迟时间的补偿。 补偿阀打开延迟时间实时降低，然后通过浸泡时间决定监控条件。 如果是监视条件，则从进气温度计算外部空气温度。 当阀门开启延迟时间过去时，测量冷却液温度。 如果冷却液温度小于开阀温度，则判定为无序。

公开(公告)号：KR100357580B1

公开(公告)日：2002-10-18

申请号：KR1020000053932

申请日：2000-09-14

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02P17/00

Abstract: 본 발명은 자동변속기 차량에서 업 쉬프트 변속시 점화시기의 지각으로 인하여 발생되는 엔진 각 가속도 변동량(ROUGHNESS)연산하여 실화 오감지를 방지할 수 있도록 한 자동변속기의 엔진 실화 감지방법에 관한 것이다.
본 발명은 세그먼트 듀레이션으로 엔진 각 가속도 변동량을 연산하고 상기 연산된 엔진 각 가속도 변동량이 기설정된 임의의 한계값(THRESHOLD)이상 유무 판단으로 실화를 판정하는 자동변속기의 엔진 실화 감지방법에 있어서, 상기 연산된 엔진 각 가속도 변동량에서 소정의 번째 각 가속도의 변동량(Δβ)(Δγ)을 각각 연산하는 단계와; 상기 단계에서 각각 연산된 각 가속도의 변동량(Δβ)(Δγ)이 임의의 한계치 이하인가를 판단하여 임의의 한계치 이하이면 이그니션 개수를 카운트하는 단계와; 상기 단계에서 카운트 된 이그니션 개수가 임의의 한계치 이상인가를 판단하는 단계와; 상기 단계에서 카운트 된 이그니션 개수가 임의의 한계치 이상이면 각 가속도 변동량에서 소정의 번째 각 가속도 변동량(Δβ)을 감산하여 임의의 한계값(threshold 1)보다 작은가를 판단하면서 실화를 판단하는 단계로 이루어짐을 특징으로 한다.

公开(公告)号：KR100354007B1

公开(公告)日：2002-09-27

申请号：KR1019990066537

申请日：1999-12-30

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02D45/00

Abstract: 본발명은흡기온센서의고장을진단함에있어서, 신호고착추론, 고온측추론으로고장진단을정확하게할 수있도록한 흡기온센서고장진단방법에관한것으로, 본발명은흡기온센서로부터읽어드린전압에대하여합선또는단락에의한최소전압이하, 합선에의한최대전압, 저온아이들및 방치로인한저온으로고장진단판단하는단계와; 상기단계에서고장이아니면, 신호고착상태인온도변화량이임계치이하로고장을판단하는단계와; 상기단계에서고장이아니면, 고온측추론인시동초기냉각수온신호와흡기온신호를비교하여차이가임계치이상이면고장으로판단하는단계로이루어짐을특징으로한다.

公开(公告)号：KR1020020049295A

公开(公告)日：2002-06-26

申请号：KR1020000078426

申请日：2000-12-19

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: G01K7/22

Abstract: PURPOSE: A fault diagnosis system and method is provided to prevent erroneous operation of the sensor, while performing arithmetic operation for soak time in an accurate manner. CONSTITUTION: A fault diagnosis system comprises a coolant temperature sensor(51), an intake air temperature sensor(52), a fuel temperature sensor(53), an engine RPM sensor(54) and a vehicle speed sensor(55) mounted to a motor vehicle, and which detect engine state and convert the detected state into an electrical signal; an ECU(60) for judging the state of engine in accordance with the signal output from the sensors, controlling the engine in accordance with the judgement; and an erroneous operation alarm lamp for alarming drivers of the fault judged by the ECU. The ECU judges fault of the fuel temperature sensor, and turns on the erroneous operation alarm lamp in accordance with the result of judgement.

Abstract translation: 目的：提供故障诊断系统和方法，以防止传感器的错误操作，同时以准确的方式进行浸泡时间的算术运算。 构成：故障诊断系统包括冷却剂温度传感器（51），进气温度传感器（52），燃料温度传感器（53），发动机转速传感器（54）和车速传感器（55） 并且检测发动机状态并将检测到的状态转换为电信号; ECU（60），用于根据从传感器输出的信号判断发动机的状态，根据判断来控制发动机; 以及由ECU判断的故障驱动器的错误操作报警灯。 ECU判断燃料温度传感器的故障，并根据判断结果打开错误的操作报警灯。

公开(公告)号：KR1020020044223A

公开(公告)日：2002-06-15

申请号：KR1020000073210

申请日：2000-12-05

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02D41/04

Abstract: PURPOSE: A method for diagnosing the failure of a fuel level sensor for a vehicle is provided to prevent the abnormal fuel level indication of a fuel gauge by estimating reliability using a fuel consumption rate calculated based on the intake air rate of an engine and to stably sense the failure of a fuel level sensor. CONSTITUTION: A method for diagnosing the failure of a fuel level sensor for a vehicle comprises the steps of deciding an initial fuel level by receiving a fuel level signal detected by a fuel level sensor(ST22), calculating a first fuel consumption rate by using the amount of the air sucked to an engine(ST26), calculating a weight depending on a travel mode sensed by a sensing unit in a vehicle, calculating a second fuel consumption rate by compensating the first fuel consumption rate with the weight(ST29), calculating a fuel consumption rate by receiving a fuel level signal detected by the fuel level sensor, and deciding the state of the fuel level sensor by comparing the calculated fuel consumption rate to the second fuel consumption rate(ST34,ST35).

Abstract translation: 目的：提供一种用于诊断车辆燃料液位传感器的故障的方法，用于通过使用基于发动机的进气量计算的燃料消耗率来估计可靠性来防止燃料表的燃料异常指示，并且稳定地 感测燃油液位传感器的故障。 构成：用于诊断车辆的燃料液位传感器的故障的方法包括以下步骤：通过接收由燃料液位传感器检测的燃料液位信号来确定初始燃料水平（ST22），通过使用 吸收到发动机的空气量（ST26），根据由车辆中的感测单元感测到的行驶模式计算重量，通过用权重（ST29）补偿第一燃料消耗率来计算第二燃料消耗率，计算 通过接收由燃料液位传感器检测到的燃料油位信号的燃料消耗率，并且通过将计算出的燃料消耗率与第二燃料消耗率进行比较来确定燃料液位传感器的状态（ST34，ST35）。

公开(公告)号：KR1020020021220A

公开(公告)日：2002-03-20

申请号：KR1020000053932

申请日：2000-09-14

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02P17/00

Abstract: PURPOSE: A method for sensing engine misfire of automatic transmission is provided to prevent sensing wrong by calculating engine angular acceleration roughness caused by sensing of ignition time in case of up shift in an automatic transmission vehicle. CONSTITUTION: The method for sensing engine misfire of automatic transmission, deciding misfire by calculating engine angular acceleration roughness with segment duration and deciding misfire by deciding a threshold is abnormal, comprises a step calculating any angular acceleration roughness in the calculated engine angular acceleration roughness(44), a step deciding any angular acceleration roughness is below a threshold(45), a step counting the number of ignition if the roughness is below a threshold(47), and a step(46) deciding the counted number of ignition is over a threshold((48), and a step deciding misfire by subtracting an angular acceleration roughness from angular acceleration roughness and deciding the roughness is lower than a threshold if the counted number of ignition is over a threshold(49).

Abstract translation: 目的：提供一种用于感测自动变速器发动机失火的方法，以防止在自动变速器车辆上升时，通过计算由感测点火时间引起的发动机角加速度粗糙度来检测错误。 构成：用于检测自动变速器发动机失火的方法，通过计算具有段持续时间的发动机角加速度粗糙度并通过确定阈值来决定失火来判定失火是异常的，包括计算发动机角加速度粗糙度（44）中的任何角加速度粗糙度的步骤 ），确定任何角加速度粗糙度的步骤低于阈值（45），如果粗糙度低于阈值（47）则对点火次数进行计数，并且确定点火数量的步骤（46）超过 阈值（（48）），通过从角加速度粗糙度减去角加速度粗糙度和判定粗糙度来决定失火的步骤低于阈值，如果点火数量超过阈值（49）。

公开(公告)号：KR100300707B1

公开(公告)日：2001-10-27

申请号：KR1019970067855

申请日：1997-12-11

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02P5/152

Abstract: PURPOSE: A method for controlling a knocking using an air flowing sensor is provided to enhance a torque of an engine, an air fuel ratio of the engine and a driving property of a vehicle by advancing an ignition timing of the engine based on the resultant value after calculating a moisture weight ratio of air absorbed to the air flowing sensor. CONSTITUTION: If a knocking is generated at an engine(50), an ECU measures an air amount absorbed by an air flowing sensor and calculates a moisture weight ratio of air(51). If the moisture weight ratio is 1 or less(71), an intake temperature and a cooling temperature are measured, the knocking is controlled(80) by delaying(78) an ignition angle of the engine based on a map data of the ECU defined according to the measured temperature. If the moisture weight ratio is 1 or larger(61), the knocking is controlled(80) by advancing(64) the ignition angle of the engine based on a map data of the ECU defined according to the measured moisture weight ratio and enhancing a torque of the engine.

公开(公告)号：KR100300706B1

公开(公告)日：2001-10-27

申请号：KR1019970067854

申请日：1997-12-11

Applicant: 현대자동차주식회사

Inventor： 김형기

IPC: F02P17/02

Abstract: PURPOSE: A method for reducing firing of an engine is provided to prevent the error for detecting the fire in the engine by detecting the fire with adjusting fuzzy amount when a period of oxygen sensor is irregularly varied. CONSTITUTION: An ECU checks whether the fire occurs in an engine(S51). Then, a window is formed for measuring a period of an oxygen sensor(S52). A signal maintaining time and the period of the signal are measured by using the output of the oxygen sensor(S53,S54). The measured signal maintaining time and the period of the signal are compared with a threshold value(S55). If the period of the signal is larger than the threshold value, a purge rate is reduced(S56). If measured signal maintaining time is longer than the threshold value, the purge rate is properly adjusted(S57). Then, a solenoid valve is operated by the adjusted purge rate(S58).