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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：KR101610107B1
公开(公告)日：2016-04-08
申请号：KR1020140122122
申请日：2014-09-15
Applicant: 현대자동차주식회사
CPC classification number: F02D43/00 , F02D41/0007 , F02D41/0052 , F02D2041/0017 , F02D2041/0022 , F02M26/05 , F02M26/06 , F02M26/35 , Y02T10/144 , Y02T10/47
Abstract: 본발명의실시예에따른엔진시스템의배기가스재순환제어방법은, 배기라인에서흡기라인으로재순환되는재순환배기가스와상기흡기라인으로유입되는신기를제어하는흡기스로틀밸브의개도량을제어하는단계, 및터보차저의하류측의부스트압과상기흡기라인을흐르는흡기유량을통해서상기흡기스로틀밸브의개도량을보정하는단계를포함할수 있다.
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公开(公告)号：KR1020160031855A
公开(公告)日：2016-03-23
申请号：KR1020140122122
申请日：2014-09-15
Applicant: 현대자동차주식회사
CPC classification number: F02D43/00 , F02D41/0007 , F02D41/0052 , F02D2041/0017 , F02D2041/0022 , F02M26/05 , F02M26/06 , F02M26/35 , Y02T10/144 , Y02T10/47
Abstract: 본발명의실시예에따른엔진시스템의배기가스재순환제어방법은, 배기라인에서흡기라인으로재순환되는재순환배기가스와상기흡기라인으로유입되는신기를제어하는흡기스로틀밸브의개도량을제어하는단계, 및터보차저의하류측의부스트압과상기흡기라인을흐르는흡기유량을통해서상기흡기스로틀밸브의개도량을보정하는단계를포함할수 있다.
Abstract translation: 根据本发明的实施例，一种控制发动机系统的排气再循环的方法包括：控制进气节流阀的开度控制从排气管道再循环到进气管线的再循环废气的步骤， 并且新鲜空气流入进气管线; 以及通过进气管线中的进气通量和涡轮增压器下游的增压压力来校正进气节流阀的开度的步骤。 因此，通过更积极地控制进气和EGR气体的供给，本发明能够通过提高控制性和责任性来提高质量并降低燃料消耗。
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