公开(公告)号：WO2022119441A1

公开(公告)日：2022-06-09

申请号：PCT/NL2021/050728

申请日：2021-12-01

Applicant: DAF TRUCKS N.V.

Inventor： GILLOT, Jan Klaas Bernard

IPC: G01M15/05 ,  F02D41/14 ,  G01M15/06 ,  G01M15/10 ,  G01M15/11

Abstract: According to the invention, a diagnostic method is provided for diagnosing a misfire condition of individual engine cylinders in a turbocharged diesel engine having at least a first and a second cylinder. The diagnostic method is characterized by defining a group of diagnosing functions (f1..fn), each having as inputs a number of subsequent sampling pressure values (p1..pm) and having as output a threshold characteristic (t1..tn) diagnosing a misfire condition; determining an error function (e1..en), which is a function of measured false fails and false passes for said diagnosed misfire condition by said diagnosing function (f1…fn), in each of an engine speed region, ranging from a lowest engine speed (rlow) to a highest engine speed (rhigh), for selected engine speed range intervals (s1..sl), and selecting a diagnosing function fi from the group of diagnosing functions (f1..fn), wherein fi having an error function ei that is lowest over the entire speed range ([rlow-rhigh]). The number n of diagnosing functions (f1..fn) in the group of diagnosing functions can be more than 7.

公开(公告)号：WO2021106009A1

公开(公告)日：2021-06-03

申请号：PCT/IN2020/050792

申请日：2020-09-13

Applicant: TVS MOTOR COMPANY LIMITED

Inventor： JAYPRAKASH BAGADE, Monika ,  RAVEENDRANATH, Arjun ,  BHUSHAN DAS, Himadri ,  JABEZ DHINAGAR, Samraj

IPC: G01M15/11 ,  F02P17/12

Abstract: A misfire detection system (300) comprising an ignition system (303) including an ignition coil (107), an ion current measurement circuit (302) electrically connected to the ignition coil (107) for measuring an ion current generated from a spark plug (106), and a signal processor (401) for processing and conditioning the ion current measured by the ion current measurement circuit (302) to determine occurrence of a misfire in the IC engine, is disclosed. The ignition coil (107) comprises a primary winding (101) and a secondary winding (103), where a first end (101B) of the primary winding (101) is electrically connected to a first end (103B) of the secondary winding (103). Misfire detection improves reliability and durability of the IC Engine.

公开(公告)号：WO2020005134A1

公开(公告)日：2020-01-02

申请号：PCT/SE2019/050562

申请日：2019-06-14

Applicant: SCANIA CV AB

Inventor： NYBÄCK, Björn ,  STENLÅÅS, Ola ,  KLEBACK, Oskar

IPC: G01M15/11 ,  F02D41/22 ,  G01L23/30

Abstract: The present invention relates to a method for determining reliability regarding misfire determination of cylinders of an internal combustion engine. The method comprises the step of detecting the pressure in the exhaust manifold arrangement of the internal combustion engine for a set of operation parameters comprising a certain range of crank angles for a certain engine load and certain engine speed so as to, for the actual cylinder setup of the engine, create a pressure sample value patterns for combustion and misfire conditions. A template course is created for the thus created pressure sample value patterns, said template course comprising a set of sample points. The pressure for the created template courses is normalized at a desired crank angle. The normalized template courses are stored. Then difference values are determined based upon difference between sample points and corresponding detected and normalized pressure values within in a desired range of crank angles. The thus determined difference values are summarized so as to determine whether a predetermined share of the summarized difference values lies above or below a predetermined threshold value so as to determine reliability regarding misfire determination. The present invention also relates to a control device for determining reliability regarding misfire determination of cylinders of an internal combustion engine. The present invention also relates to a vehicle. The present invention also relates to a computer program and a computer readable medium.

公开(公告)号：WO2019206397A1

公开(公告)日：2019-10-31

申请号：PCT/EP2018/060382

申请日：2018-04-23

Applicant: SIEMENS INDUSTRY SOFTWARE COMPUTATIONAL DYNAMICS LIMITED

Inventor： PRAGER, Jens

IPC: G06F17/50 ,  F02D35/02 ,  F02D41/00 ,  G01M15/11

Abstract: Es wird ein Verfahren und eine Anordnung zur Modellierung einer laminaren Flammgeschwindigkeit (f, f 0 ) vorgeschlagen. Dabei wird eine Korrelationsfunktion vorgeschlagen, bei der die Abhängigkeit der laminaren Flammgeschwindigkeit (f, f 0 ) von Druck (P) und Temperatur (T) getrennt von der Abhängigkeit von einer Abgasrückführrate (X EGR ) bzw. Verdünnung mit nichtreaktivem Gas modelliert wird. Dadurch ist es möglich, aus einer vergleichsweise geringen Anzahl von numerisch oder experimentell erzeugten Stützstellen für ein gegebenes Mischungsverhältnis (equivalence ratio; PHI) jeweils einen übersichtlichen Parametersatz (A1,..., A11) für die Modellierung der laminaren Flammengeschwindigkeit (f) anzugeben, womit für numerisch komplexe, insbesondere dreidimensionale Simulationen für jeden betrachteten Betriebspunkt schnell und akkurat jeweils die laminare Flammengeschwindigkeit (f, f 0 ) angegeben werden kann.

公开(公告)号：WO2019099228A1

公开(公告)日：2019-05-23

申请号：PCT/US2018/059210

申请日：2018-11-05

Applicant: TULA TECHNOLOGY, INC.

Inventor： CHEN, Shikui Kevin ,  MANDAL, Aditya ,  CHIEN, Li-Chun ,  ORTIZ-SOTO, Elliot

IPC: F02D41/04 ,  B60W10/06 ,  F02D13/06 ,  F02D35/02 ,  G01M15/04 ,  G01M15/11

Abstract: Using machine learning for misfire detection in a Dynamic firing level modulation controlled internal combustion engine is described. A neural network is used to calculate expected crank acceleration from various inputs, including the dynamically defined cylinder skip fire sequence. The output of the neural network is then compared to a signal indicative of the measured crank acceleration. Based the comparison, a prediction is made if a misfire has occurred or not. In alternative embodiment, the neural network is expanded to include the measured crank acceleration as an additional input. With the latter embodiment, the neural network is arranged to directly predict misfire events.

公开(公告)号：WO2017167467A1

公开(公告)日：2017-10-05

申请号：PCT/EP2017/051841

申请日：2017-01-27

Applicant: ROBERT BOSCH GMBH

Inventor： SKOWRONEK, Tim ,  PAWLAK, Thomas ,  BITTNER, Felix

IPC: F02P9/00 ,  F02P17/12 ,  G01M15/11 ,  F02P5/152 ,  H01T15/00 ,  H01T13/60 ,  F02P15/10 ,  F02D35/02 ,  F02P3/04 ,  F02P3/08 ,  F02P15/08

Abstract: Es ist schon ein Verfahren zum Betreiben eines Zündsystems bekannt, bei dem eine Primärspule eines ersten Spannungserzeugers bestromt und die Bestromung der Primärspule unterbrochen wird, um einen Zündfunken an einer Funkenstrecke zu erzeugen. Weiterhin wird zum Stützen des von dem ersten Spannungserzeuger erzeugten Zündfunkens ein zweiter Spannungserzeuger betrieben. Während des Betriebs des Hochsetzstellers wird eine definierte regel- bzw. steuerbare Leistung an die Zündfunken abgegeben. Bei bestimmten Brennverfahren im Verbrennungsmotor gibt es im Brennraum jedoch sehr hohe Turbulenzen, die die Zündfunken an den Elektroden der Zündkerzen so stark auslenken, dass diese drohen abzureißen bzw. instabil werden. Durch die Auslenkung des Funkens steigt die elektrische Spannung über den Elektroden der Zündkerzen stark an, wobei der Funkenstrom entsprechend stark abfällt und somit ein Funkenabriss droht. Daher wird auf der Sekundärseite des Zündsystems der sekundärseitige Strom oder die sekundärseitige Spannung gemessen, um einen drohenden Funkenabriss erkennen zu können. Bei hohen Brennraumturbulenzen steigt die Spannung über den Zündkerzenelektroden stark an und die Wahrscheinlichkeit eines Funkenabrisses steigt. Wenn dieser Funkenabriss vor der erfolgreichen Einleitung der Gemischenflammung auftritt ergibt sich ein unerwünschter Zündaussetzer. Erfindungsgemäß ist vorgesehen, dass unter der Voraussetzung, dass die Schwellwertbedingung erfüllt ist, eine erneute Zündung durch den ersten Spannungserzeuger eingeleitet wird.

Abstract translation:

这是操作已知为Z导航用途ndsystems其中初级＆AUML的方法; RCOIL通电的第一电压生成器和所述电流供给到初级BEAR被中断RCOIL于Z导航用途点火火花于无线链路上 产生。 ndfunkens被操作发电机的第二电压，将继续圣导航用途tzen由第一电压发生器ž导航使用产生的信号。 W＆AUML;升压转换器的操作期间是一个定义的调节或控制功率于Z导航使用给定的点火火花。 然而，在内燃机燃烧的某些方法是在燃烧室中非常高的湍流，在与Z导航用途的电极在Z导航用途点火火花ndkerzen偏转这么多，这威胁爆破ROAD或变得不稳定秒。 由电电压上升导航用途火花的偏转;在与Z导航用途ndkerzen急剧的电极，其中，所述火花电流ABF相应强BEAR下降，因此面临的一个无线电拆除。 rseitige电流或次级BEAR;因此，在次级BEAR R第沿Z导航用途ndsystems测量到即将发生火花识别拆除K＆ouml二次＆AUML rseitige电压;即可。 绕Z导航用途，在高燃烧室湍流，电压上升导航用途ndkerzenelektroden急剧和的无线电拆除的概率增大。 如果在不期望的导航用途nschterŽ＆uuml成功引入Gemischenflammung结果之前发生此无线电中断; ndaussetzer。 发明＆AUML;大街 条件是，该阈值条件ERF导航用途是跌倒的情况下，一个新款Z导航用途将本发明由第一电压发生器启动。

公开(公告)号：WO2013026950A1

公开(公告)日：2013-02-28

申请号：PCT/FI2012/050746

申请日：2012-07-23

Applicant: WÄRTSILÄ FINLAND OY ,  ÖSTMAN, Fredrik ,  PORTIN, Kaj

Inventor： ÖSTMAN, Fredrik ,  PORTIN, Kaj

IPC: F02D35/02 ,  G01M15/11

CPC classification number: F02D35/02 ,  F02D41/2422 ,  F02D41/2429 ,  F02D2200/1015 ,  G01M15/11

Abstract: The inventive arrangement comprises a control unit (1) that is arranged to form misfire control commands to cylinder specific regulating units and is connectable to cylinder specific first sensors (3). The control unit is also connectable to second sensors (2) of at least two different types. The arrangement further comprises a map (4) for mapping values of the first sensors and the second sensors. The values of the first sensors indicate misfire conditions cylinder specifically and the values of the second sensors indicate at least two variables of the engine. The map (4) indicates also a misfire area (22) and an operation point (23) of the engine in relation to the variables and the misfire condition.

Abstract translation: 本发明的装置包括一个控制单元（1），该控制单元（1）被布置成对气缸特定的调节单元形成失火控制命令，并且可连接到气缸特定的第一传感器（3）。 控制单元也可连接到至少两种不同类型的第二传感器（2）。 该装置还包括用于映射第一传感器和第二传感器的值的地图（4）。 第一传感器的值指示不定式气缸具体，第二传感器的值表示发动机的至少两个变量。 地图（4）还指示发动机相对于变量和失火状态的失火区域（22）和操作点（23）。

公开(公告)号：WO2012025434A4

公开(公告)日：2012-08-16

申请号：PCT/EP2011064102

申请日：2011-08-16

Applicant: AVL SOFTWARE & FUNCTIONS GMBH ,  ANGERMAIER ANTON ,  DEIML MATHIAS ,  PROBST CHRISTIAN ,  SCHARNAGL MICHAEL

Inventor： ANGERMAIER ANTON ,  DEIML MATHIAS ,  PROBST CHRISTIAN ,  SCHARNAGL MICHAEL

IPC: G01M15/11

CPC classification number: F02D41/22 ,  F02D41/1498 ,  F02D2041/2058 ,  F02D2200/1012 ,  F02D2200/1015 ,  F02N11/04 ,  F02P17/00 ,  G01M15/11 ,  Y02T10/40

Abstract: The invention relates to a method and a detection device for detecting misfires in an internal combustion engine connected to a generator by means of a rotor shaft in a torsionally rigid manner. The generator comprises a detection device for detecting the misfires, which determines anomalies as a result of misfires of the internal combustion engine by comparing received actual values with nominal values provided by a speed regulator.

Abstract translation: 本发明涉及一种方法和包括检测设备，用于在内燃发动机，其以旋转方式刚性经由转子轴连接到发电机检测失火，所述发生器具有用于检测其偏差的失火的检测机由于通过比较内燃机的失火 通过确定的速度控制器指定的设定值获取实际值。

公开(公告)号：WO2011138999A1

公开(公告)日：2011-11-10

申请号：PCT/KR2010/003448

申请日：2010-05-31

Applicant: 에스티엑스엔진 주식회사 ,  오광석 ,  박정근 ,  서석판 ,  신재봉

Inventor： 오광석 ,  박정근 ,  서석판 ,  신재봉

IPC: F02D45/00 ,  G01M15/11 ,  F02D35/00 ,  F02D41/22

CPC classification number: F02D41/1498 ,  F02D2041/1432 ,  F02D2041/288 ,  F02D2200/101 ,  F02D2200/1015 ,  G01M15/11

Abstract: 본 발명은 내연기관을 운전하는 도중에 발생할 수 있는 실화를 검출할 수 있는 방법 및 장치에 관한 것으로서, 특히 실화의 발생 여부는 물론 다기통 엔진에서 실화가 발생한 실린더까지 검출할 수 있도록 한 것이다. 본 발명에 따른 내연기관의 실화 검출방법 및 그 장치는 기관 회전축의 회전각속도에 따른 주파수 변화를 통해 실화 발생 여부를 검출하고, 기준실린더의 상사점 위치에 대한 개별 실린더의 상사점 위치를 상대적으로 매칭하여 밴드패스필터에 의해 필터링된 회전각속도 신호의 피크 위치에 따라 실화 발생 실린더를 조기에 검출한다. 따라서 내연기관에서의 실화 발생 여부 및 실화 발생 실린더를 조기에 검출하여 미리 대비하도록 함으로써 내연기관의 정지와 같은 사고를 예방 및 내구 수명을 증대시킬 수 있다.

Abstract translation: 本发明涉及一种用于检测在内燃机操作期间可能发生的失火的方法和装置，并且其特别地不仅检测到失火，而且还检测多缸发动机的哪个气缸失火 。 根据本发明的用于检测内燃机失火的方法和装置包括通过根据发动机的旋转轴的旋转角速度而变化的频率来检测是否发生失火，并且快速地 通过将参考圆柱体的上死点与各个气缸的上死点匹配，并使用由带通滤波器滤波的旋转角速度信号的峰值位置来检测哪个气缸失火。 因此，通过快速检测内燃机中的失火，并且在哪个气缸中发生失火，并且采取预防措施，可以防止内燃机失速等事故，并且其使用寿命可以延长。

公开(公告)号：WO2009067804A1

公开(公告)日：2009-06-04

申请号：PCT/CA2008/002085

申请日：2008-11-27

Applicant: WESTPORT POWER INC. ,  HUANG, Jian ,  CHEUNG, Duran ,  MUMFORD, David

Inventor： HUANG, Jian ,  CHEUNG, Duran ,  MUMFORD, David

IPC: G01M15/11 ,  F02D41/04

CPC classification number: G01M15/11 ,  F02D35/027 ,  F02D41/1498 ,  F02D2200/1012 ,  F02D2200/1015

Abstract: The method comprises operating an engine and collecting a real-time accelerometer signal from an accelerometer sensor. The real-time accelerometer signal is digitized and filtered to isolate data in a frequency range associated with combustion to produce a filtered signal data set. The filtered signal data set is integrated to produce an integrated signal data set, and misfire is detected by comparing the integrated signal data set with a predetermined reference data set associated with the same operating point. The apparatus is a control system for an engine that comprises an accelerometer sensor mounted to the engine; a look-up table in which is stored predetermined reference data sets, in association with predetermined operating conditions; and an electronic controller programmed to: (i) receive real-time accelerometer signals from the accelerometer sensor, (ii) digitize and filter the real-time accelerometer signal to isolate data in a frequency range associated with combustion to produce a filtered signal data set, (iii) integrate the filtered signal data set to produce an integrated signal data set, and, (iv) compare the integrated signal data set to the predetermined reference data set to detect when misfire occurs.

Abstract translation: 该方法包括操作发动机并从加速度计传感器收集实时加速度计信号。 实时加速度计信号被数字化和滤波，以隔离与燃烧相关的频率范围内的数据，以产生滤波信号数据集。 经过滤波的信号数据集合以产生积分信号数据组，并且通过将积分信号数据集与与相同操作点相关联的预定参考数据集进行比较来检测失火。 该装置是用于发动机的控制系统，其包括安装在发动机上的加速度传感器; 与预定操作条件相关联地存储预定参考数据集的查找表; 以及电子控制器，被编程为：（i）从加速度计传感器接收实时加速度计信号，（ii）数字化和过滤实时加速度计信号以隔离与燃烧相关联的频率范围内的数据，以产生滤波信号数据集 ，（iii）将经滤波的信号数据集合以产生积分信号数据集，以及（iv）将积分信号数据集与预定参考数据集进行比较，以检测何时发生失火。