ENGINE MONITORING APPARATUS
    2.
    发明申请

    公开(公告)号:WO2019002422A1

    公开(公告)日:2019-01-03

    申请号:PCT/EP2018/067338

    申请日:2018-06-27

    Abstract: An engine oil filler cap for monitoring an internal combustion engine comprises: a processor; and a sensor module comprising a pressure sensor configured to sense crankcase pressure of the internal combustion engine and to output data representative of the sensed crankcase pressure to the processor. The engine oil filler cap is configured to provide a housing for the processor. The processor is configured to determine a value representative of the firing frequency of the internal combustion engine based on the output data.

    METHOD AND CONTROL DEVICE FOR DETERMINING RELIABILITY REGARDING MISFIRE DETERMINATION OF CYLINDERS OF AN INTERNAL COMBUSTION 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

    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.

    PROCEDE D'ESTIMATION DU TAUX D'ETHANOL D'UN CARBURANT
    4.
    发明申请
    PROCEDE D'ESTIMATION DU TAUX D'ETHANOL D'UN CARBURANT 审中-公开
    用于估计燃料中乙醇含量的方法

    公开(公告)号:WO2008139113A2

    公开(公告)日:2008-11-20

    申请号:PCT/FR2008/050621

    申请日:2008-04-08

    Abstract: L'invention concerne un procédé d'estimation du taux d'éthanol d'un carburant injecté dans un moteur à combustion interne, sur un nombre n de cycles (n étant un entier supérieur ou égal à 1). Ce procédé comprend les étapes suivantes : déterminer un début de combustion d'un carburant injecté pour chacun des cycles; calculer l'angle moyen de début de combustion ≤ θ début moy ≥ à partir des ≤ θ ≥ de début de combustion relevéspour l'ensemble des n cycles; déterminer une fin de combustion d'un carburant injecté pour chacun des cycles; calculer l'angle moyen de fin de combustion ≤ θ fin moy ≥ à partir des ≤ θ ≥ de fin de combustion relevés pour l'ensemble des ncycles; calculer le délai de combustion entre le temps début de combustion trouvé à partir de ≤ θ début moy ≥ et le temps fin de combustion trouvé à partir de ≤ θ fin moy ≥; déduire le taux d'éthanol à partir du délai de combustion, sur la base d'un modèle déterminé ou d'une liste de correspondance entre des délais de combustion et des taux d'éthanol.

    Abstract translation: 本发明涉及一种用于在数量(n)个循环(n为大于或等于1的整数)中估计喷射到内燃机中的燃料中的乙醇水平的方法。 该方法包括以下步骤:确定每个循环的喷射燃料的燃烧开始; 从针对所有n个周期记录的燃烧开始角度(θ)计算平均燃烧起始角度“α”开始角度“ 确定每个循环的喷射燃料的燃烧结束; 从针对所有n个循环记录的燃烧结束角度(θ)计算平均燃烧端角“α”末端“ 基于“?”开始“燃烧开始时间之间的燃烧时间和基于”?“结束时间”的燃烧结束时间的计算; 并根据预先确定的模型或燃烧时间列表和相关乙醇水平从燃烧时间中推断乙醇水平。

    ENGINE MONITORING APPARATUS
    5.
    发明申请

    公开(公告)号:WO2019002423A1

    公开(公告)日:2019-01-03

    申请号:PCT/EP2018/067339

    申请日:2018-06-27

    Abstract: An engine oil dipstick for monitoring an internal combustion engine comprises a processor and a sensor module. The sensor module is configured to sense a characteristic of the internal combustion engine and to output data representative of the sensed characteristic to the processor. The engine oil dipstick is configured to provide a housing for the processor. The processor is configured to determine a value representative of the firing frequency of the internal combustion engine based on the output data.

    PROCEDE DE DETERMINATION DE LA PRESSION TOTALE DANS LE CYLINDRE D'UN MOTEUR
    6.
    发明申请
    PROCEDE DE DETERMINATION DE LA PRESSION TOTALE DANS LE CYLINDRE D'UN MOTEUR 审中-公开
    用于确定发动机气缸总压的方法

    公开(公告)号:WO2016012095A1

    公开(公告)日:2016-01-28

    申请号:PCT/EP2015/001502

    申请日:2015-07-21

    Abstract: La présente invention concerne un procédé (45) de détermination de la pression totale dans un cylindre (P cyl ) d'un moteur en fonction de la position angulaire (crk) d'un vilebrequin (14) et à partir d'une quantité de carburant à injecter en éventuellement plusieurs injections, comprenant les étapes suivantes : • détermination de la pression dans le cylindre lorsqu'il n'y a pas de combustion, ladite pression étant dite pression sans combustion (P cyl_m ), • détermination pour chaque injection (inj i ) d'une courbe de sous-variation de pression (ΔP comb_i ) provoquée par la combustion de la quantité de carburant injectée lors de l'injection (inj i ) considérée, courbe dont la forme est estimée en fonction de la quantité de carburant à injecter (MF i ) et de la position angulaire de début d'injection (SOI i ) de l'injection correspondante, • détermination de la pression totale dans le cylindre (P cyl ) par addition de la pression sans combustion (P cyl_m ) et des pressions données par les courbes de sous-variation de pression (ΔP comb_i ) de chaque injection (inj i ).

    Abstract translation: 本发明涉及一种用于根据曲轴(14)的角位置(crk)和要喷射的燃料量来确定发动机的气缸(Pcyl)中的总压力的方法(45),潜在地 几次注射,包括以下步骤:•当没有燃烧时确定气缸中的压力,所述压力被称为没有燃烧的压力(Pcyl_m),•对于每个注射(注入),对于每个注射 考虑到在注射期间喷射的燃料量的燃烧引起的压力变化(ΔPcomb_i),根据喷射燃料量(MFi)估计的曲线形状和 相应注射开始(SOIi);•通过加入无燃烧压力(Pcyl_m)和由压力子变化曲线给出的压力来确定气缸中的总压力(Pcyl) (ΔPcomb_i)。

    METHOD FOR ESTIMATING THE LEVEL OF ETHANOL IN A FUEL
    7.
    发明申请
    METHOD FOR ESTIMATING THE LEVEL OF ETHANOL IN A FUEL 审中-公开
    用于估计燃料中乙醇含量的方法

    公开(公告)号:WO2008139113A3

    公开(公告)日:2009-03-05

    申请号:PCT/FR2008050621

    申请日:2008-04-08

    Abstract: The invention relates to a method for estimating the level of ethanol in a fuel injected into an internal combustion engine over a number (n) of cycles (n being an integer greater than or equal to 1). The method comprises the following steps: determination of the start of combustion of an injected fuel for each of the cycles; calculation of the average combustion start angle "?ave start" from the combustion start angles (?) recorded for all of the n cycles; determination of the end of combustion of an injected fuel for each of the cycles; calculation of the average combustion end angle "?ave end" from the combustion end angles (?) recorded for all of the n cycles; calculation of the combustion time between the combustion start time on the basis of "?ave start" and the combustion end time on the basis of "?ave end"; and deduction of the level of ethanol from the combustion time on the basis of a pre-determined model or a list of combustion times and associated ethanol levels.

    Abstract translation: 本发明涉及一种用于在数量(n)个循环(n为大于或等于1的整数)中估计喷射到内燃机中的燃料中的乙醇水平的方法。 该方法包括以下步骤:确定每个循环的喷射燃料的燃烧开始; 从针对所有n个周期记录的燃烧开始角度(θ)计算平均燃烧起始角度“θave”开始; 确定每个循环的喷射燃料的燃烧结束; 从针对所有n个周期记录的燃烧端角(θ)计算平均燃烧端角“θave end”; 基于“αveve”,基于“开始”和燃烧结束时间的燃烧开始时间之间的燃烧时间的计算; 并根据预先确定的模型或燃烧时间列表和相关乙醇水平从燃烧时间中推断乙醇水平。

    DETERMINING TOP DEAD CENTRE
    8.
    发明申请
    DETERMINING TOP DEAD CENTRE 审中-公开
    确定顶级中心

    公开(公告)号:WO1993014387A1

    公开(公告)日:1993-07-22

    申请号:PCT/GB1993000044

    申请日:1993-01-11

    CPC classification number: G01L23/30 F02B1/04

    Abstract: A method of accurately determining the top dead centre position of a piston (11) and a cylinder (12) of a reciprocating type of internal combustion engine (10) when inoperative which has a crankshaft (13) driven in use by the piston (11) via a piston rod (14), the method comprising the steps of connecting to a space (28) in the cylinder (12), a pressure sensitive switch (30, 31) of the kind which is adapted to change its operating state in response to sensing a pressure above or below a threshold pressure to open or close an electrical circuit, the method further comprising connecting the pressure sensitive switch (30, 31) in an electrical circuit which includes an indicating means (45, 46; 45a &cir& _) to indicate when the operating state of the pressure sensitive switch (30, 31) changes, turning the crankshaft (13) manually until the indicating means (45, 46; 45a &cir& _) indicates no change of operating state of the pressure sensitive switch (30, 31) for a corresponding movement of the crankshaft (13).

    Abstract translation: 一种在不起作用的情况下准确地确定往复式内燃机(10)的活塞(11)和气缸(12)的上止点位置的方法,其具有在活塞(11)使用时驱动的曲轴(13) ),所述方法包括连接到所述气缸(12)中的空间(28)的步骤,所述压力敏感开关(30,31)适于改变其操作状态 响应于感测高于或低于阈值压力的压力以打开或关闭电路,所述方法还包括将压敏开关(30,31)连接在电路中,该电路包括指示装置(45,46; 45a& ),以指示压力敏感开关(30,31)的操作状态何时改变,手动转动曲轴(13)直到指示装置(45,46; 45a&cir&_)表示压力敏感开关的操作状态没有变化 (30,31)进行相应的移动 曲轴(13)。

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