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    Method for diagnosting evaporative losses from a fuel tank of an internal combastion engine
    2.
    发明公开
    Method for diagnosting evaporative losses from a fuel tank of an internal combastion engine 审中-公开
    一种用于蒸发损失从内燃发动机的燃料箱中的诊断方法

    公开(公告)号：EP2108808A1

    公开(公告)日：2009-10-14

    申请号：EP08425230.3

    申请日：2008-04-08

    Applicant: MAGNETI MARELLI POWERTRAIN S.p.A.

    Inventor： Cavanna, Filippo ,  Sgatti, Stefano ,  Lambertini, Loris ,  Guidotti, Luca ,  Mazza, Domenico ,  Cavina, Nicolo

    IPC: F02M25/08

    CPC classification number: F02M25/0818

    Abstract: Method for diagnosing evaporative losses from a fuel tank (3) of an internal combustion engine (1); the method of diagnosis consisting of: isolating the tank (3); pressurizing/depressurizing the tank (3) by means of a pneumatic machine (12) driven by an electric motor (13); measuring the time profile of at least one characteristic value of the electric motor (13); calculating the frequency range of the characteristic value of the electric motor (13); and diagnosing the rate of evaporative loss from the tank (3) as a function of the frequency range of the characteristic value of the electric motor (13).

    Abstract translation: 从内燃发动机（1）的燃料箱（3）诊断蒸发损失的方法; 诊断由...组成的方法：分离罐（3）; 加压/通过在电动机（13）驱动的气动机（12）的手段减压的罐（3）; 测量所述电动机（13）的至少一个特征值的时间曲线; 计算电动机（13）的特征值的频率范围; 和从所述罐（3）作为电动机（13）的特征值的频率范围内的一个功能诊断蒸发损失的速率。

    Control method in the case of a fault in an internal combustion engine fitted with a servo-assisted butterfly valve
    4.
    发明公开
    Control method in the case of a fault in an internal combustion engine fitted with a servo-assisted butterfly valve 审中-公开
    Notverfahren zur Steuerung einer Brennkraftmaschine mit elektrischer Drosselklappe

    公开(公告)号：EP1995434A1

    公开(公告)日：2008-11-26

    申请号：EP07425324.6

    申请日：2007-05-25

    Applicant: MAGNETI MARELLI POWERTRAIN S.p.A.

    Inventor： Benassi, Daniele ,  Sgatti, Stefano ,  Lambertini, Loris

    IPC: F02D11/10 ,  F02D9/10 ,  F02D29/02

    CPC classification number: F02D11/107 ,  F02D2011/102 ,  F02D2041/227 ,  F02D2200/602

    Abstract: Control method in the case of a fault in an internal combustion engine (5); the control method provides for the phases of: cyclically checking the correct functioning of a connection between an electronic control unit (18) and an electric drive (24) of an electric actuator (19) coupled to a butterfly valve (12) to control the position of the same butterfly valve (12), switching off the electric drive (24) in the case of interruption in the connection between the electronic control unit (18) and the electric drive (24) so that the butterfly valve (12) sets itself in a predefined limp-home position, and piloting the engine (5) in the case of interruption in the connection between the electronic control unit (18) and the electric drive (24) to keep the number of revs constant and equal to a predefined emergency value.
    The electric drive switches off autonomously or via a second electric cable between the ECU and the electric drive.

    Abstract translation: 内燃机故障情况下的控制方法（5）; 控制方法提供以下阶段：循环地检查电子控制单元（18）和联接到蝶形阀（12）的电致动器（19）的电驱动器（24）之间的连接的正确功能，以控制 在相同的蝶阀（12）的位置，在电子控制单元（18）和电驱动器（24）之间的连接中断的情况下关闭电动驱动器（24），使得蝶阀（12） 本身处于预定义的起始位置，并且在电子控制单元（18）和电驱动器（24）之间的连接中断的情况下引导发动机（5），以保持转数恒定并等于 预定义紧急值。 电驱动器自主地或经由ECU和电驱动器之间的第二电缆断开。

    Method for finding the angular acceleration of a drive shaft of an internal combustion engine by means of a gear wheel integral with said drive shaft
    5.
    发明公开
    Method for finding the angular acceleration of a drive shaft of an internal combustion engine by means of a gear wheel integral with said drive shaft 有权
    一种用于在轴上测量的内燃机的驱动轴的角加速度与固定齿轮方法

    公开(公告)号：EP1515130A1

    公开(公告)日：2005-03-16

    申请号：EP04104442.1

    申请日：2004-09-14

    Applicant: Magneti Marelli Powertrain S.p.A.

    Inventor： Sgatti, Stefano ,  DE LUCA, Luigi ,  Zanotti, Massimo

    IPC: G01M15/00

    CPC classification number: G01M15/046

    Abstract: Method for finding the angular acceleration of a drive shaft (4) of an internal combustion engine (1) by means of a gear wheel (5) integral with said drive shaft (4); the method making provision to identify, in each complete revolution of the drive shaft (4), a number of angular measurement lines, to measure the time (Ti) used by the drive shaft (4) to pass over each angular measurement line using the signal supplied by the gear wheel (5), to add algebraically, to the time used by the drive shaft (4) to pass over each angular measurement line, a corresponding correction coefficient (K i ) that takes account of any asymmetries in the gear wheel (5), and to determine the value (acc) of angular acceleration of the drive shaft (4) as a function of the time (T i ) used by the drive shaft (4) to pass over each angular measurement line; the value of the correction coefficients (K i ) is determined in the course of an engine fuel cut-off phase (1).

    Abstract translation: 用于通过一个齿轮意味着找到的内燃发动机（1）的驱动轴（4）的角加速度方法（5）一体地与所述驱动轴（4）; 所述方法制作提供识别，在驱动轴的每一个完整旋转（4），多个角度测量线，以测量由所述驱动轴所用的时间（Ti）的（4），以在每一个角度测量线用传 通过齿轮轮（5）提供的信号，以代数加，到由驱动轴（4）中使用的时间越过每个角度测量线，对应的校正系数（KI）没有考虑任何不对称的在齿轮 （5），以及驱动轴的角加速度的确定性矿的值（ACC）（4）的由驱动轴所用的时间（Ti）的一个函数（4）越过每个角度测定线; （KI）的校正系数的值是确定的开采在发动机燃料切断阶段（1）的过程中。

    Method for diagnosing a gaseous fuel feeding system for an internal combustion engine
    6.
    发明公开
    Method for diagnosing a gaseous fuel feeding system for an internal combustion engine 审中-公开
    Verfahren zur诊断气体发生器Brennstoffzufuhrsystemsfüreinen Verbrennungsmotor

    公开(公告)号：EP2177741A1

    公开(公告)日：2010-04-21

    申请号：EP08425666.8

    申请日：2008-10-15

    Applicant: Magneti Marelli Powertrain S.p.A.

    Inventor： Cavanna, Filippo ,  Sensi, Fabio ,  Sgatti, Stefano ,  Garagnani, Nicola ,  Lambertini, Loris ,  Zanotti, Massimo

    IPC: F02D41/22 ,  F02D19/02 ,  F02D41/04

    CPC classification number: F02D41/0027 ,  F02D19/025 ,  F02D19/027 ,  F02D41/042 ,  F02D41/22 ,  F02D2041/224 ,  F02D2041/225 ,  F02D2200/0625 ,  F02M21/0212 ,  F02M21/0239 ,  F02M21/0245 ,  Y02T10/32 ,  Y02T10/40

    Abstract: A method for diagnosing a gaseous fuel feeding circuit (2) in an internal combustion engine (1); the feeding circuit (2) is provided with a gaseous fuel tank (5), a high-pressure branch (3) which is fed directly by the tank (5), a low-pressure branch (4), and a pressure reducer (8) interposed between the high-pressure branch (3) and the low-pressure branch (4); the diagnostic method includes the steps of reading the current value of a number of characteristic magnitudes of the gaseous fuel present in the feeding circuit (2) during the normal operation of the internal combustion engine (1); diagnosing the presence of a fault of the feeding circuit (2) by using the current value of the characteristic magnitudes of the gaseous fuel present in the feeding circuit (2) during the normal operation of the internal combustion engine (1); determining the expected value of at least one diagnostic parameter during a step of designing and developing; calculating the current value of the diagnostic parameter by using the current value of the characteristic magnitudes of the gaseous fuel present in the feeding circuit (2) during the normal operation of the internal combustion engine (1); comparing the expected value and the current value of the diagnostic parameter during the normal operation of the internal combustion engine (1); and diagnosing the presence of a fault in the feeding circuit (2) when the expected value of the diagnostic parameter is significantly different from the current value, during the normal operation of the internal combustion engine (1).

    Abstract translation: 一种用于诊断内燃机（1）中的气体燃料供给回路（2）的方法。 进料回路（2）设置有气体燃料箱（5），由罐（5）直接供给的高压分支（3），低压分支（4）和减压器 8）插入在高压分支（3）和低压分支（4）之间; 诊断方法包括以下步骤：在内燃机（1）的正常操作期间读取馈送电路（2）中存在的气体燃料的特征量的数量的当前值; 通过使用在内燃机（1）的正常操作期间存在于馈电电路（2）中的气体燃料的特征量的当前值来诊断供电电路（2）的故障的存在; 在设计和开发步骤中确定至少一个诊断参数的预期值; 通过使用在内燃机（1）的正常操作期间存在于供给回路（2）中的气体燃料的特征量的当前值来计算诊断参数的当前值; 比较在内燃机（1）的正常运行期间的诊断参数的预期值和当前值; 以及在所述内燃机（1）的正常运行期间，当所述诊断参数的预期值与所述当前值显着不同时，诊断所述供电电路（2）中的故障的存在。

    A system for the complete diagnosis of a driver
    9.
    发明公开
    A system for the complete diagnosis of a driver 有权
    Einrichtung zurvollständigen诊断eine Treibers

    公开(公告)号：EP1052518A1

    公开(公告)日：2000-11-15

    申请号：EP99830294.7

    申请日：1999-05-13

    Applicant: STMicroelectronics S.r.l. ,  MAGNETI MARELLI S.p.A.

    Inventor： Milanesi, Andrea ,  Chicca, Stefania ,  Poletto, Vanni ,  Giorgetta, Valerio ,  Sgatti, Stefano ,  Vigna, Sergio

    IPC: G01R31/02

    CPC classification number: G01R31/024

    Abstract: A system is described for the diagnosis of a driver (D) of the type adapted to detect one or more circuit anomalies which can occur in the said driver, including:

    voltage comparator circuits (10, 20) adapted to generate diagnostic logic signals (F 1 , F 2 , F 3 ) each indicative of the existence of a corresponding type of anomaly; and
    a coding circuit (M, SM) adapted to receive these diagnostic signals (F 1 , F 2 , F 3 ) and to output information relating to an overall operating state of the circuit. The coding circuit (M, SM) includes a first portion adapted to provide at its output first logic signals (SHB, SHG, OL) indicative of the last anomaly occurred since a system reset operation, and a second portion for coding such first logic signals (SHB, SHG, OL). The second portion includes a sequential logic network (SM) adapted to:


    receive the first logic input signals (SHB, SHG, OL) and at least one second logic signal (IN) indicative of the current operating phase of the driver (D); and
    achieve, as a function of the said first and second logic signals (SHB, SHG, OL; IN) a stable internal state such as to determine at the output information in the form of an N bit coded word representative of an occurred anomaly, of a condition of absence of anomaly in the current operating phase, or of a condition of absence of anomaly in any operating phase.

    Abstract translation: 描述了用于诊断适于检测可能发生在所述驱动器中的一个或多个电路异常的类型的驱动器（D）的系统，包括：适于产生诊断逻辑信号的电压比较器电路（10,20）（F1 ，F2，F3），每个指示存在相应类型的异常; 以及适于接收这些诊断信号（F1，F2，F3）的编码电路（M，SM），并且输出与电路的总体工作状态有关的信息。 编码电路（M，SM）包括适于在其输出端提供指示自系统复位操作以来发生的最后异常的第一逻辑信号（SHB，SHG，OL）的第一部分和用于对这些第一逻辑信号进行编码的第二部分 （SHB，SHG，OL）。 第二部分包括适于：接收第一逻辑输入信号（SHB，SHG，OL）的顺序逻辑网络（SM）和指示驾驶员（D）的当前操作阶段的至少一个第二逻辑信号（IN）; 并且作为所述第一和第二逻辑信号（SHB，SHG，OL; IN）的函数实现稳定的内部状态，例如以表示发生的异常的N位编码字的形式在输出信息处确定， 在当前运行阶段没有异常的情况，或任何运行阶段没有异常的情况。

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