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公开(公告)号：KR1020150059541A
公开(公告)日：2015-06-01
申请号：KR1020130143266
申请日：2013-11-22
CPC classification number: G01M15/11
Abstract: 본발명은 3개이상의엔진의실린더들에서실화가연속적으로발생하는경우에도실화를검출하고, 실화가일어난엔진실린더를판별함으로써보다정확한엔진실린더의실화검출이가능한차량의엔진회전수를이용한실화검출장치및 방법에관한것이다. 본발명에따른차량의엔진회전수를이용한실화검출방법은, 엔진회전수로부터각가속도인자값을계산하는단계; 상기각가속도인자값으로부터각가속도인자의변화량값을계산하는단계; 실화발생임계점과실화종료임계점을계산하는단계; 상기각가속도인자의변화량값을상기실화발생임계점과비교하는단계; 상기각가속도인자의변화량값을상기실화종료임계점과비교하는단계; 상기비교하는단계들을통하여실화가발생한실린더를검출하는단계;를포함할수 있다.
Abstract translation: 本发明涉及一种使用车辆发动机的转数来检测失火的装置，其能够通过在三个以上的发动机的气缸中连续产生失火的情况下检测发动机气缸的失火来准确地检测发动机气缸的失火，并且 区分产生失火的发动机气缸。 根据本发明，使用车辆发动机的转数来检测失火的方法包括以下步骤：从发动机的转数计算角加速度参数值; 从所述角加速度参数值计算角加速度参数的变化量的值; 当失火发生并停止时计算临界点; 将角加速度参数的变化量与发生失火时的临界点的值进行比较; 以及检测通过比较步骤发生失火的气缸。
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公开(公告)号：KR101490933B1
公开(公告)日：2015-02-06
申请号：KR1020130081605
申请日：2013-07-11
Applicant: 현대자동차주식회사
CPC classification number: Y02T10/144
Abstract: 본 발명은 터보차져 디젤 엔진에 적용되는 연소압 센서를 이용하여 부스트 압력을 측정하는 연소압 센서를 이용한 부스트 압력 측정 방법에 관한 것이다. 이를 위한 본 발명의 실시예는, 터보차져 디젤 엔진에 적용되는 연소압 센서를 이용하여 부스트 압력을 측정하는 방법으로서, 상기 연소압 센서를 이용하여 흡기밸브담힘(IVC; intake valve close) 이후의 압력으로서 제1 압력(P
1 ) 및 이 제1 압력(P
1 )에 대응하는 제1 실린더 부피(V
1 )를 획득하는 단계; 상기 연소압 센서를 이용하여 연료분사 전의 압력으로서 제2 압력(P
2 ) 및 이 제2 압력(P
2 )에 대응하는 제2 실린더 부피(V
2 )를 획득하는 단계; 상기 연소압 센서를 이용하여 하사점(BDC)의 압력(P
BDC )을 획득하는 단계; 보일의 법칙을 이용하여 상기 제1 압력(P
1 )과 제2 압력(P
2 ) 간의 차이를 산출하는 단계; 및 상기 제1 압력(P
1 )과 제2 압력(P
2 ) 간의 차이 및 상기 하사점 압력(P
BDC )을 기초로 부스트압을 산출하는 단계;를 포함할 수 있다.-
公开(公告)号：KR101338466B1
公开(公告)日：2013-12-10
申请号：KR1020120128845
申请日：2012-11-14
Applicant: 현대자동차주식회사
Abstract: The present invention relates to a pilot fuel injection correcting method of a diesel engine and a system thereof for correcting an error of a pilot fuel injection amount according to a change of operating characteristics of an injector for spraying a fuel in a diesel engine. According to an embodiment of the present invention, a pilot fuel injection correction method of a diesel engine comprises: a step for judging whether a mileage of a vehicle is over a predetermined mileage or not; a step for judging an overrun state that a diesel engine does not spray a fuel in case the mileage of a vehicle is over a predetermined mileage; a step for spraying a fuel in a setting condition corresponding to a setting reference heat generating amount, in case the diesel engine is in an overrun state; a step for detecting a combustion pressure by a fuel sprayed in the setting condition; a step for producing a heat generating amount based on the detected combustion pressure; a step for storing a heat generating difference as a pilot fuel spray correction value by producing the heat generating difference value by comparing the produced heat generating amount and the reference heat generating amount; and a step for spraying a pilot fuel by correcting the fuel spraying time, a spraying pressure, and a spraying amount based on the pilot fuel spray correction value. [Reference numerals] (AA) START;(BB,DD) NO;(CC,EE) YES;(FF) END;(S110) Vehicle mileage >= Predetermined mileage ?;(S120) Overrun state that a fuel is not sprayed ?;(S130) Spray a fuel in a condition corresponding to a reference heat generating amount;(S140) Detect a combustion pressure by a combustion pressure sensor;(S150) Calculate a combustion heat generation amount based on the detected combustion pressure (Use Ideal gas law and Law of thermodynamics);(S160) Calculate a heat generation difference value by comparing the calculated heat generation amount and a reference heat generation amount;(S170) Calculate, and store a fuel spray correction value based on a heat generation difference value;(S180) Spray a fuel by correcting a fuel spray time, a spray pressure, and a spay amount based on a fuel spraycorrection value, when a diesel engine is operated normally
Abstract translation: 本发明涉及一种柴油发动机的先导燃料喷射校正方法及其系统，用于根据用于喷射柴油机中的燃料的喷射器的操作特性的变化来校正引燃燃料喷射量的误差。 根据本发明的实施例，柴油发动机的引燃燃料喷射校正方法包括：判断车辆里程是否超过预定里程的步骤; 在车辆行驶里程超过预定里程的情况下判断柴油发动机不喷燃料的超限状态的步骤; 在柴油发动机处于超限状态的情况下，在与设定基准发热量对应的设定条件下喷射燃料的步骤; 用于通过在设定条件下喷射的燃料来检测燃烧压力的步骤; 基于检测到的燃烧压力产生发热量的步骤; 通过比较所产生的发热量和参考发热量来产生发热差值来存储发热差作为引燃燃料喷雾校正值的步骤; 以及通过基于引燃燃料喷雾校正值校正燃料喷射时间，喷射压力和喷射量来喷射引燃燃料的步骤。 （AA）START;（BB，DD）NO;（CC，EE）YES;（FF）END;（S110）车辆里程> =预定里程数;（S120）不喷射燃料的溢出状态 （S130）以与基准发热量相对应的条件喷射燃料（S140）用燃烧压力传感器检测燃烧压力;（S150）基于检测到的燃烧压力计算燃烧发热量（Use Ideal 气体定律和热力学定律）;（S160）通过比较计算出的发热量和参考发热量来计算发热差值;（S170）根据发热差值计算并存储燃料喷雾修正值 ;（S180）当柴油发动机正常运行时，通过基于燃料喷射校正值校正燃料喷射时间，喷雾压力和喷射量来喷射燃料
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公开(公告)号：KR101294072B1
公开(公告)日：2013-08-07
申请号：KR1020110114080
申请日：2011-11-03
Applicant: 현대자동차주식회사
CPC classification number: F02D41/18 , F02D35/023 , F02D41/123 , F02D41/222 , F02P19/028 , Y02T10/40
Abstract: 본 발명은 차량의 운행 조건, 연료 분사량 조건 및 흡입 공기량 조건을 만족하는지 여부를 판단하고, 실시간으로 측정되는 공기량과 연소압센서에서 측정되는 연소압과의 상관식을 도출하여 그 기울기와 y절편을 모니터링 하며, 상기 기울기와 y절편이 기설정된 정상수준에 속하는지 여부를 판단하여, 정상수준의 범위를 벗어난 경우 그 횟수를 누적시켜 설정된 센서 이상 누적검출 횟수에 해당하게 되면 경고를 출력하는 것을 특징으로 하는 연소압센서의 이상상태 판단 시스템 및 방법에 관한 것으로서, 본 발명에 의하면 연소압센서의 열화 등 이상상태를 신뢰성 있게 검출함으로써 연소압 기반 연소제어의 정밀성을 향상시킬 수 있는 효과가 있다.
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公开(公告)号：KR1020130065421A
公开(公告)日：2013-06-19
申请号：KR1020110132269
申请日：2011-12-09
Inventor： 남기훈
CPC classification number: F02D41/0077 , F02D41/221 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/23 , F02M26/49 , Y02T10/47
Abstract: PURPOSE: An exhaust gas recirculation diagnosis method and a system thereof are provided to rapidly and accurately monitor the condition of EGR(Exhaust Recirculation) system in real time by determining the condition of EGR system operated by using a dual EGR system based on the position of EGR valve of inoperative EGR system. CONSTITUTION: An exhaust gas recirculation diagnosis method and a system thereof comprises the following steps of: measuring(S10) the condition of engine including an engine speed and the amount of fuel information; and determining which EGR system is applied between a high pressure EGR system and a low pressure EGR system according to the measured engine condition. In the determination, the EGR valve position of the not applied EGR system is measured. The abnormal of system is determined by comparing the measured EGR valve position to the preset reference position. [Reference numerals] (S10) Measure engine speed/load(fuel); (S20) Determine an LP/HP-EGR application mode depending on the engine state (RPM/Q, cooling water temperature, external air temperature, etc.); (S30) LP-EGR open-loop control: measure the position of an HP-EGR valve, HP-EGR open-loop control: measure the position of an LP-EGR valve; (S41) Low limit Limit; (S46) Determine error healing; (S50) Shut off the LP-EGR system(a warning lamp, if necessary)
Abstract translation: 目的：提供一种废气再循环诊断方法及其系统，通过确定通过使用双EGR系统操作的EGR系统的状态，通过基于位置的位置快速准确地监测EGR（排气再循环）系统的状态 EGR系统的EGR系统。 构成：废气再循环诊断方法及其系统包括以下步骤：测量（S10）包括发动机速度和燃料信息量的发动机状态; 并且根据所测量的发动机状况确定在高压EGR系统和低压EGR系统之间施加哪个EGR系统。 在确定时，测量未应用的EGR系统的EGR阀位置。 通过将测量的EGR阀位置与预设的参考位置进行比较来确定系统的异常。 （附图标记）（S10）测量发动机转速/负载（燃料）; （S20）根据发动机状态（RPM / Q，冷却水温度，外部空气温度等），确定LP / HP-EGR应用模式; （S30）LP-EGR开环控制：测量HP-EGR阀的位置，HP-EGR开环控制：测量LP-EGR阀的位置; （S41）下限<参考，阀位<上限; （S42）EGR系统的正常运转; （S43，S47）保持状态一段时间（去抖时间）; （S45）错误数>限制; （S46）确定误差愈合; （S50）关闭LP-EGR系统（如有必要）警告灯）
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Patent Agency Ranking
公开(公告)号：KR1020130057839A
公开(公告)日：2013-06-03
申请号：KR1020110123792
申请日：2011-11-24
Applicant: 현대자동차주식회사
CPC classification number: Y02T10/121 , F02D41/0052 , F02D2021/083 , F02M26/34 , F02M26/35 , F02M26/45
Abstract: PURPOSE: An EGR(Exhaust Gas Recirculation) valve, an EGR control system using the same, and a method thereof are provided to control back pressure and the amount of LP-EGR(Liquefied Petroleum-Exhaust Gas Recirculation) simultaneously and to sufficient LP-EGR, thereby improving fuel efficiency by reducing the back pressure. CONSTITUTION: An EGR valve(10) comprises a rotary shaft(20), an EGR flap(30), an exhaust flap(40), and a motor. The rotary shaft is installed in an edge portion where an EGR passage and an exhaust pipe are crossed. The EGR and exhaust flaps are mounted respectively in both sides of the rotary shaft and formed into one plate(60) by being mutually connected. A stopper(70) is installed in the EGR passage or in the inner circumference of the exhaust pipe so that a leak of the EGR flap is prevented and the maximum opened degree of the EGR flap is controlled.
Abstract translation: 目的：提供EGR（排气再循环）阀，使用其的EGR控制系统及其方法，以同时控制LP-EGR（液化石油 - 废气再循环）的反压和足够的LP- EGR，从而通过减小背压来提高燃料效率。 构成：EGR阀（10）包括旋转轴（20），EGR挡板（30），排气挡板（40）和马达。 旋转轴安装在EGR通道和排气管交叉的边缘部分。 EGR和排气挡板分别安装在旋转轴的两侧，通过相互连接形成一个板（60）。 在排气管的EGR通路或内周安装有止动件70，能够防止EGR挡板的泄漏，并且控制EGR挡板的最大开度。
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公开(公告)号：KR1020130056706A
公开(公告)日：2013-05-30
申请号：KR1020110122438
申请日：2011-11-22
Applicant: 현대자동차주식회사 , 서울대학교산학협력단
CPC classification number: F02D41/1462 , F01N3/0871 , F01N3/208 , F01N9/005 , F01N2430/06 , F01N2900/1402 , F02D41/005 , F02D41/1465 , F02D2041/1433 , F02D2250/36 , Y02A50/2325 , Y02T10/47
Abstract: PURPOSE: A knocks control system and a method thereof are provided to improve exhausting performance by setting a targeted value with a predicted knocks generation amount according to driving situation and by controlling discharge of knocks in a direction capable of reducing the discharge of the knocks. CONSTITUTION: A knocks generation amount is predicted by using a virtual sensor. A predicted knocks value is compared with a predetermined knocks target value. The knocks generation amount is controlled so that the predicted knocks value follows the knocks target value(S30). [Reference numerals] (AA) NOx prediction; (BB) Predicted NOx value
Abstract translation: 目的：提供爆震控制系统及其方法，以通过根据驾驶情况设定具有预测的爆震发生量的目标值，并且通过在能够减少爆震的排放的方向上控制爆震的排放来提高排气性能。 构成：通过使用虚拟传感器预测爆震发生量。 将预测的敲击值与预定的敲击目标值进行比较。 控制爆震发生量，使得预测爆震值遵循敲击目标值（S30）。 （附图标记）（AA）NOx预测; （BB）预测NOx值<目标NOx值; （CC）燃油效率或输出模式; （DD，GG）燃料量变化; （EE，HH）喷射时间延迟; （FF）排气模式（NOx还原）
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公开(公告)号：KR1020130056705A
公开(公告)日：2013-05-30
申请号：KR1020110122437
申请日：2011-11-22
Applicant: 현대자동차주식회사 , 서울대학교산학협력단
CPC classification number: F01N11/00 , F01N3/18 , F01N9/00 , F02D35/02 , F02D35/023 , F02D35/026 , F02D35/028 , F02D41/0072 , F02D41/1454 , F02D41/1462 , F02D2200/0614 , F02D2200/101 , Y02T10/47
Abstract: PURPOSE: A knocks generation estimation method is provided not to include additional sensor and to estimate the amount of knocks generation in real time through a simple calculation based on fuel amount of a vehicle, the number of engine rotation, an air fuel ratio, and ERG information. CONSTITUTION: A no generation rate is calculated by using an engine combustion pressure and an engine driving variable. The engine combustion pressure is used in order to calculate a no generation period. The no generation rate is calculated from the no generation rate and the no generation period. A NO2 generation amount is calculated from a ratio of NO and NO2 according to an engine driving section and a NO generation amount in order to predict a knocks generation amount. [Reference numerals] (210) Fuel amount; (AA) Calculation
Abstract translation: 目的：提供爆震发生估计方法，不包括额外的传感器，并且通过基于车辆的燃料量，发动机转速，空燃比和ERG的简单计算来实时估计爆震量 信息。 构成：通过使用发动机燃烧压力和发动机驱动变量来计算无发电率。 使用发动机燃烧压力来计算无发电周期。 无生成率由无生成率和无生成周期计算。 为了预测爆震发生量，根据发动机驱动部和NO产生量，根据NO和NO2的比例计算NO2产生量。 （附图标记）（210）燃料量; （AA）计算
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公开(公告)号：KR101251526B1
公开(公告)日：2013-04-05
申请号：KR1020110057019
申请日：2011-06-13
Inventor： 남기훈
CPC classification number: F02B37/22 , F01N3/021 , F01N3/106 , F01N5/04 , F01N2560/06 , F01N2560/08 , F01N2560/14 , F01N2900/1404 , F01N2900/1406 , F01P2060/16 , F02B29/0406 , F02D41/0072 , F02D41/1448 , F02D41/221 , F02D2041/0067 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/16 , F02M26/24 , F02M26/35 , F02M26/47 , F02M26/49 , F02M26/71 , Y02T10/144 , Y02T10/16 , Y02T10/20 , Y02T10/47
Abstract: 본 발명은 저압 이지알 쿨러 효율을 진단하는 방법에 관한 것으로, 엔진 스피드 및 부하를 측정하는 단계; 상기 엔진 스피드 및 부하에 따른 저압 이지알 쿨러 후단의 모델 온도와 계측 온도 차이에 대한 한계치를 설정하는 단계; 저압 이지알 밸브 전후단의 차압을 측정하는 단계; 상기 측정된 차압을 이용하여 상기 저압 이지알 쿨러를 통과하는 질량유량을 산출하는 단계; 상기 산출된 질량유량을 이용하여 저압 이지알 쿨러의 효율을 산출하는 단계; 상기 산출된 효율을 이용하여 저압 이지알 쿨러 후단의 모델 온도를 산출하는 단계; 상기 산출된 저압 이지알 쿨러 후단의 모델 온도와 실제 측정된 저압 이지알 쿨러 후단의 계측 온도를 비교하는 단계; 를 포함하는 저압 이지알 시스템 모델을 이용한 저압 이지알 쿨러 효율 진단방법을 제공한다.
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公开(公告)号：KR1020120140100A
公开(公告)日：2012-12-28
申请号：KR1020110059760
申请日：2011-06-20
Applicant: 현대자동차주식회사
Inventor： 남기훈
IPC: F02M26/06 , F02M26/09 , F02M26/16 , F02B37/013 , F02D21/08
CPC classification number: Y02T10/121 , Y02T10/144 , F02M26/06 , F02B37/013 , F02D21/08 , F02D2021/083 , F02M26/09 , F02M26/16
Abstract: PURPOSE: A low pressure EGR(exhaust gas recirculation) system is provided to the enough amount of re-circulating exhaust gas as the exhaust gas is dually supercharged at the front end of a supercharger. CONSTITUTION: A low pressure EGR(exhaust gas recirculation) system(100) comprises an exhaust line(110), an intake line(180), a turbocharger(170), a low pressure EGR valve(130), a low pressure EGR line(140), and a supercharger(500). Exhaust gas discharged from an engine(400) passes through the exhaust line. The air flows into the engine through the intake line. The turbocharger supercharges re-circulating exhaust gas, and connects the exhaust line to the intake line. The low pressure EGR valve adjusts the amount of the re-circulating exhaust gas diverging from the exhaust line The low pressure EGR line is connected to the low pressure EGR valve and turbocharger, and supplies air mixed with the exhaust gas to the engine. The supercharger is adjacently connected to the turbocharger, and superchargers the re-circulating exhaust gas. [Reference numerals] (AA) Exhaust air; (BB) Intake air
Abstract translation: 目的：当增压器的前端排气被双重增压时，向足够量的再循环废气提供低压EGR（废气再循环）系统。 构成：低压EGR（排气再循环）系统（100）包括排气管（110），进气管线（180），涡轮增压器（170），低压EGR阀（130），低压EGR管 （140）和增压器（500）。 从发动机（400）排出的排气通过排气管路。 空气通过进气管线流入发动机。 涡轮增压器对再循环废气进行增压，并将排气管路连接到进气管路。 低压EGR阀调节从排气管道发散的再循环废气的量低压EGR管线连接到低压EGR阀和涡轮增压器，并将与废气混合的空气供应到发动机。 增压器相邻连接到涡轮增压器，增压器再循环排气。 （附图标记）（AA）排气; （BB）进气
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