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公开(公告)号：KR101566741B1
公开(公告)日：2015-11-06
申请号：KR1020140042594
申请日：2014-04-09
Applicant: 현대자동차주식회사
CPC classification number: F02D41/405 , F02D35/023 , F02D41/401 , Y02T10/44
Abstract: 본발명의실시예에따른후분사시기를보정하는방법은실린더안으로흡입된공기를이용하여연소를수행하기위해서주분사를수행하는단계, 환원제의양을제어하거나배기가스의온도를변화시키기위해서상기주분사이후에후분사를수행하는단계, 엔진의운행조건에따라서상기후분사의제1분사시기를결정하는단계, 상기후분사의연소효율에따라서상기제1분사시기를진각또는지각시키는단계, 및보정된상기제1분사시기에상기후분사를수행하는단계를수행할수 있다.
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公开(公告)号：KR101534712B1
公开(公告)日：2015-07-08
申请号：KR1020130157578
申请日：2013-12-17
Applicant: 현대자동차주식회사
CPC classification number: F02D41/18 , F02D23/00 , F02D35/023 , F02D41/0005 , F02D41/0007 , F02D41/045 , F02D41/222 , F02D2200/0402 , F02D2200/0406 , F02D2200/0408 , F02M35/1038 , F02M35/10386 , Y02T10/144 , Y02T10/42
Abstract: 본발명의실시예는연소압신호에의한부스트압력센서및 공기유량센서의진단및 보정방법및 시스템에관한것이다. 이를위한방법은, 엔진이오버런(overrun) 상태인지판단하는단계; 상기엔진이오버런상태이면, 연소압센서에의해검출된연소압을기초로설정된계산식에따라흡기매니폴드(intake manifold) 압력(부스트압력)을계산하는단계; 상기엔진이오버런상태이면, 상기검출된연소압을기초로설정된계산식에따라흡기매니폴트의공기유량을계산하는단계; 상기계산된부스트압력을부스트압력센서에의해검출된부스트압력과비교하고, 상기계산된공기유량을공기유량센서에의해검출된공기유량과비교하는단계; 상기검출된부스트압력과상기계산된부스트압력간의차이가설정된기준값 보다크고, 설정된오차값보다작으면상기부스트압력센서를설정된값으로보정하는단계로서, 상기설정된기준값은상기설정된오차값 보다작은단계; 상기검출된공기유량과상기계산된공기유량간의차이가설정된기준값 보다크고, 설정된오차값보다작으면상기공기유량센서를설정된값으로보정하는단계로서, 상기설정된기준값은상기설정된오차값 보다작은단계;를포함할수 있다.
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公开(公告)号：KR101526417B1
公开(公告)日：2015-06-10
申请号：KR1020140042595
申请日：2014-04-09
Applicant: 현대자동차주식회사
Abstract: 본발명의실시예에따른실린더압력을이용한배기매니폴드의압력을산출하는방법은압력센서를통해서실린더의연소압력을측정하는단계, 연소압력을측정하는동안에, 운행조건에따라서미리설정된시간영역을선택하는단계, 상기미리설정된시간영역안에서측정된상기실린더의연소압력을선택하는단계, 상기선택된실린더의압력을미리설정된연산을통해서특정값을연산하는단계, 및상기특정값을통해서배기매니폴드의실제압력을산출하는단계를포함할수 있다.
Abstract translation: 根据本发明的实施例，使用气缸压力计算排气歧管的压力的方法包括：通过压力传感器测量气缸的燃烧压力的步骤; 在测量燃烧压力的同时根据驾驶状况选择预设时间区域的步骤; 选择在预设时间区域中测量的气缸的燃烧压力的步骤; 通过预先计算来计算所述气缸的选定压力的特定值的步骤; 以及通过该特定值计算排气歧管的实际压力的步骤。 因此，排气歧管的压力容易根据气缸的压力值计算并使用。
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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：KR101393583B1
公开(公告)日：2014-05-12
申请号：KR1020120147809
申请日：2012-12-17
Applicant: 현대자동차주식회사
CPC classification number: F02D41/222 , F02D41/04 , F02D45/00 , F02D2041/223 , Y02T10/40
Abstract: The present invention relates to a method for determining the malfunctions of sensors, wherein the method comprises a step of determining whether the driving state a vehicle satisfies a condition for detecting the malfunctions of the sensors; a step of calculating the common physical properties of the sensors as targets to be determined; a step of comparing the calculated physical properties; a step of determining whether the compared physical properties are within a predetermined range; and a step of outputting a malfunction signal when the compared physical properties are not within the predetermined range.
Abstract translation: 本发明涉及一种用于确定传感器故障的方法，其中该方法包括确定车辆的驾驶状态是否满足用于检测传感器故障的条件的步骤; 将传感器的共同物理性质计算为要确定的目标的步骤; 比较计算的物理性质的步骤; 确定比较的物理属性是否在预定范围内的步骤; 以及当比较的物理特性不在预定范围内时输出故障信号的步骤。
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Patent Agency Ranking
公开(公告)号：KR1020140055076A
公开(公告)日：2014-05-09
申请号：KR1020120121391
申请日：2012-10-30
Applicant: 현대자동차주식회사
CPC classification number: F02D41/32 , F02D35/025 , F02D35/028 , F02D41/401 , F02D2041/228 , F02D2200/1015 , G01M15/11 , Y02T10/44
Abstract: Disclosed are a method for determining the misfire of a vehicle engine, and a method and an apparatus for controlling the misfire of a vehicle engine. The method for determining the misfire of a vehicle engine is as follows. The combustion pressure of a combustion chamber of an engine is sensed during the operation of the engine. A mass fraction of burning rate (MFB), a half of mass fraction of burning rate (MFB50), an MFB50 coefficient of variation (MFB50 COV), an indicated mean effective pressure (IMEP), and an IMEP coefficient of variation (IMEP COV) are calculated using the combustion pressure. A target MFB is set. The misfire is determined if the crank angle is changed 5 degrees or more, the MFB50 COV is 20% or more, or IMEP COV is 20% or more when comparing the MFB40 calculated in the calculation step with the target MFB. Spray timing is advanced so that the MFB reaches the target MFB.
Abstract translation: 公开了一种用于确定车辆发动机的失火的方法，以及用于控制车辆发动机失火的方法和装置。 用于确定车辆发动机失火的方法如下。 发动机的燃烧室的燃烧压力在发动机的操作期间被感测。 燃烧速率（MFB）的质量分数，燃烧速率质量分数（MFB50）的一半，MFB50变异系数（MFB50COV），指示平均有效压力（IMEP）和IMEP变异系数（IMEP COV ）使用燃烧压力计算。 设置目标MFB。 当将计算步骤中计算的MFB40与目标MFB进行比较时，如果曲柄角度改变5度以上，MFB50COV为20％以上，或者IMEP COV为20％以上，则判断失火。 喷涂定时提前，MFB到达目标MFB。
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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：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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