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    METHOD AND APPARATUS FOR DETERMINING A NORMAL COMBUSTION CHARACTERISTIC FOR AN INTERNAL COMBUSTION ENGINE FROM AN ACCELEROMETER SIGNAL
    2.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING A NORMAL COMBUSTION CHARACTERISTIC FOR AN INTERNAL COMBUSTION ENGINE FROM AN ACCELEROMETER SIGNAL 审中-公开
    用于确定来自加速度计信号的内燃机的正常燃烧特性的方法和装置

    公开(公告)号：WO2009067787A1

    公开(公告)日：2009-06-04

    申请号：PCT/CA2008/002043

    申请日：2008-11-20

    Applicant: WESTPORT POWER INC. ,  HUANG, Jian ,  ANCIMER, Richard ,  CHEUNG, Duran

    Inventor： HUANG, Jian ,  ANCIMER, Richard ,  CHEUNG, Duran

    IPC: G01M15/02 ,  F02D41/04 ,  G01M15/04 ,  G01M15/08

    CPC classification number: G01M15/08 ,  F02D35/02 ,  F02D35/023 ,  F02D35/027 ,  G01M15/12

    Abstract: The method comprises operating a calibration engine, and collecting combustion characteristic data and reference accelerometer signals, which are correlated with each other and stored in a calibration table. The calibration table can be used by an engine to determine a real-time normal combustion characteristic when the engine is operating by collecting a real-time accelerometer sensor signal and cross correlating with the correlated data stored in the calibration table. Accordingly, the apparatus comprises a calibration engine comprising a calibration sensor, a reference accelerometer sensor and a data storage device for storing the collected calibration data that is correlated with the collected reference accelerometer signals, and an engine equipped with an accelerometer sensor, a calibration table and an electronic engine controller programmed to receive real-time accelerometer signals and cross correlate them with reference accelerometer signals to determine a real-time normal combustion characteristic.

    Abstract translation: 该方法包括操作校准引擎，并收集彼此相关并存储在校准表中的燃烧特性数据和参考加速度计信号。 发动机可以使用校准表来确定当发动机通过采集实时加速度计传感器信号并与存储在校准表中的相关数据进行交叉相关操作时的实时正常燃烧特性。 因此，该装置包括校准引擎，其包括校准传感器，参考加速度计传感器和用于存储与所收集的参考加速度计信号相关的收集的校准数据的数据存储装置，以及配备有加速度计传感器，校准表 以及被编程为接收实时加速度计信号并将其与参考加速度计信号交叉相关以确定实时正常燃烧特性的电子发动机控制器。

    DETECTING AND MITIGATING ABNORMAL COMBUSTION CHARACTERISTICS
    3.
    发明申请
    DETECTING AND MITIGATING ABNORMAL COMBUSTION CHARACTERISTICS 审中-公开
    检测和减轻异常燃烧特性

    公开(公告)号：WO2016168940A1

    公开(公告)日：2016-10-27

    申请号：PCT/CA2016/050473

    申请日：2016-04-22

    Applicant: WESTPORT POWER INC.

    Inventor： HUANG, Jian ,  LEE, Kevin Derek

    IPC: G01M15/05 ,  F02D41/22 ,  G01L23/22

    CPC classification number: F02D35/027 ,  F02D19/0623 ,  F02D19/08 ,  F02D19/105 ,  F02D35/024 ,  F02D35/028 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/1401 ,  F02D41/22 ,  F02D41/403 ,  F02D43/04 ,  F02D2041/1432 ,  F02D2200/025 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/1015 ,  F02P5/1527 ,  G01M15/11 ,  Y02T10/36 ,  Y02T10/40

    Abstract: Premixed engines including dual fuel engines can experience abnormal combustion characteristics including misfire, pre-ignition and knock. A method for detecting and mitigating abnormal combustion in an engine comprises sensing frequency components of an acoustic signal associated with a combustion chamber during a combustion cycle, the frequency components representative of at least one of a normal and an abnormal combustion characteristic; determining an in-cylinder pressure signal as a function of the acoustic signal; calculating as functions of the in- cylinder pressure signal at least one of a knock index, a gross indicated mean effective pressure and a start of combustion timing; detecting the abnormal combustion characteristic is at least one of (a) a misfire event when the gross indicated mean effective pressure is less than a predetermined mean effective pressure value; (b) a pre-ignition event when the start of combustion timing is advanced of a start of ignition timing; and (c) an engine knock event when the knock index is greater than a predetermined knock value; and performing a mitigation strategy for the detected abnormal combustion characteristic.

    Abstract translation: 包括双燃料发动机在内的预混发动机可能会遇到异常燃烧特性，包括失火，预燃和爆震。 用于检测和减轻发动机中的异常燃烧的方法包括在燃烧循环期间感测与燃烧室相关联的声学信号的频率分量，所述频率分量表示正常和异常燃烧特性中的至少一个; 确定作为声学信号的函数的缸内压力信号; 作为所述缸内压力信号的功能，计算爆震指数，总指示平均有效压力和燃烧正时开始中的至少一个; 检测异常燃烧特性是以下中的至少一个：（a）总指示平均有效压力小于预定平均有效压力值时的失火事件; （b）当点火正时开始时燃烧正时开始时的预点火事件; 和（c）爆震指数大于预定爆震值时的发动机爆震事件; 并对检测到的异常燃烧特性执行缓解策略。

    COMBUSTION SYSTEM FOR GASEOUS FUELLED INTERNAL COMBUSTION ENGINE
    4.
    发明申请
    COMBUSTION SYSTEM FOR GASEOUS FUELLED INTERNAL COMBUSTION ENGINE 审中-公开
    气体燃烧内燃机的燃烧系统

    公开(公告)号：WO2015031991A1

    公开(公告)日：2015-03-12

    申请号：PCT/CA2014/050819

    申请日：2014-08-27

    Applicant: WESTPORT POWER INC.

    Inventor： HUANG, Jian ,  GOUDIE, Dale W.

    IPC: F02B43/00 ,  F02B23/06 ,  F02D19/02 ,  F02F3/26

    CPC classification number: F02B23/0624 ,  F02B23/0651 ,  F02B23/0663 ,  F02B23/0669 ,  F02B23/0672 ,  F02B23/0693 ,  F02B23/101 ,  F02B43/00 ,  F02D19/0686 ,  F02D19/0694 ,  F02D19/10 ,  F02M21/0263 ,  F02M21/0275 ,  F02M21/0284 ,  Y02T10/125 ,  Y02T10/32 ,  Y02T10/36

    Abstract: Gaseous fuel injection pressures are normally less than liquid fuel injection pressures, resulting in reduced gaseous fuel jet momentum and mixing. A combustion system for an internal combustion engine comprises an intake port and valve, a cylinder and a piston that cooperate to provide a quiescent combustion chamber. The piston includes a re-entrant type piston bowl comprising an outer periphery and a protuberance emanating from the outer periphery. A fuel injector is configured to directly introduce a gaseous fuel into the combustion chamber and an ignition source is provided for igniting the gaseous fuel. A controller actuates the fuel injector such that a gaseous fuel jet is directed towards and splits upon impacting the protuberance forming first and second fuel plumes. The first fuel plume is redirected towards a first mixing zone adjacent a cylinder head and the second fuel plume redirected towards a second mixing zone adjacent the piston bowl.

    Abstract translation: 气体燃料喷射压力通常小于液体燃料喷射压力，导致气体燃料喷射动量和混合减少。 用于内燃机的燃烧系统包括进气口和阀，气缸和活塞，其协作以提供静态燃烧室。 该活塞包括一个入口式活塞碗，其包括外周和从外周发出的隆起。 燃料喷射器构造成将气态燃料直接引入燃烧室，并且提供用于点燃气体燃料的点火源。 控制器致动燃料喷射器，使得气体燃料射流朝向并分裂，撞击形成第一和第二燃料羽流的突起。 第一燃料羽流被重定向到与气缸盖相邻的第一混合区，并且第二燃料羽流朝着与活塞碗相邻的第二混合区重定向。

    FUEL SYSTEM DIAGNOSTICS
    7.
    发明申请
    FUEL SYSTEM DIAGNOSTICS 审中-公开
    燃油系统诊断

    公开(公告)号：WO2014138970A1

    公开(公告)日：2014-09-18

    申请号：PCT/CA2014/050212

    申请日：2014-03-11

    Applicant: WESTPORT POWER INC.

    Inventor： HUANG, Jian ,  MUNSHI, Sandeep

    IPC: F02D41/14 ,  F02D19/06 ,  F02D29/02 ,  F02D41/22

    CPC classification number: F02D41/1438 ,  F02D19/06 ,  F02D19/0647 ,  F02D29/02 ,  F02D35/024 ,  F02D35/027 ,  F02D35/028 ,  F02D41/008 ,  F02D41/14 ,  F02D41/221 ,  F02D2041/224 ,  F02D2200/0612 ,  F02D2200/0616 ,  F02D2200/0618 ,  Y02T10/36 ,  Y02T10/40

    Abstract: A method and apparatus for in situ operating an internal combustion engine comprising determining at least one combustion characteristic for a combustion chamber of the internal combustion engine, comprising an actual heat release signal for the combustion chamber; and inputting the actual heat release signal into a diagnostic logic tree for diagnosing changes in combustion characteristics due to at least one of: a malfunctioning fuel injector, a start of combustion timing error; and a change in fuel quality; and performing a mitigation technique to compensate for the changes in combustion characteristics.

    Abstract translation: 一种用于原位操作内燃机的方法和装置，包括确定内燃机的燃烧室的至少一个燃烧特性，包括用于燃烧室的实际放热信号; 并且将实际的放热信号输入到诊断逻辑树中，用于诊断燃烧特性的变化，这是由于以下中的至少一种：燃油喷射器故障，燃烧定时误差的开始; 燃油质量改变; 并执行缓解技术以补偿燃烧特性的变化。

    METHOD AND APPARATUS FOR RECONSTRUCTING IN-CYLINDER PRESSURE AND CORRECTING FOR SIGNAL DECAY
    9.
    发明申请
    METHOD AND APPARATUS FOR RECONSTRUCTING IN-CYLINDER PRESSURE AND CORRECTING FOR SIGNAL DECAY 审中-公开
    用于重建缸内压力和校正信号衰减的方法和装置

    公开(公告)号：WO2011011868A1

    公开(公告)日：2011-02-03

    申请号：PCT/CA2010/001143

    申请日：2010-07-27

    Applicant: WESTPORT POWER INC. ,  HUANG, Jian

    Inventor： HUANG, Jian

    IPC: G01M15/12 ,  F02D35/02 ,  F02D41/14 ,  F02P5/15

    CPC classification number: F02D41/28 ,  F02D35/024 ,  F02D35/027 ,  F02D2041/1432 ,  F02D2041/281 ,  F02D2041/286 ,  F02D2041/288 ,  G01M15/08 ,  G01M15/12

    Abstract: The disclosed method comprises steps for reconstructing in-cylinder pressure data from a vibration signal collected from a vibration sensor mounted on an engine component where it can generate a signal with a high signal-to-noise ratio, and correcting the vibration signal for errors introduced by vibration signal charge decay and sensor sensitivity. The correction factors are determined as a function of estimated motoring pressure and the measured vibration signal itself with each of these being associated with the same engine cycle. Accordingly, the method corrects for charge decay and changes in sensor sensitivity responsive to different engine conditions to allow greater accuracy in the reconstructed in-cylinder pressure data. An apparatus is also disclosed for practicing the disclosed method, comprising a vibration sensor, a data acquisition unit for receiving the vibration signal, a computer processing unit for processing the acquired signal and a controller for controlling the engine operation based on the reconstructed in-cylinder pressure.

    Abstract translation: 所公开的方法包括用于从安装在发动机部件上的振动传感器收集的振动信号重建缸内压力数据的步骤，其中它可以产生具有高信噪比的信号，以及校正所引起的误差的振动信号 通过振动信号电荷衰减和传感器灵敏度。 校正因子被确定为估计的驾驶压力和测量的振动信号本身的函数，其中每个都与相同的发动机循环相关联。 因此，该方法响应于不同的发动机条件来校正电荷衰减和传感器灵敏度的变化，以允许在重建的缸内压力数据中更高的精度。 还公开了一种用于实施所公开的方法的装置，包括振动传感器，用于接收振动信号的数据获取单元，用于处理所获取的信号的计算机处理单元和用于基于重建的缸内控制发动机运转的控制器 压力。

    METHOD AND APPARATUS FOR USING AN ACCELEROMETER SIGNAL TO DETECT MISFIRING IN AN INTERNAL COMBUSTION ENGINE
    10.
    发明申请
    METHOD AND APPARATUS FOR USING AN ACCELEROMETER SIGNAL TO DETECT MISFIRING IN AN INTERNAL COMBUSTION ENGINE 审中-公开
    使用加速度计信号检测内燃机发生故障的方法和装置

    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。

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