Method and apparatus to monitor a mass airflow metering device in an internal combustion engine
    23.
    发明授权
    Method and apparatus to monitor a mass airflow metering device in an internal combustion engine 有权
    监测内燃机质量气流计量装置的方法和装置

    公开(公告)号:US08224559B2

    公开(公告)日:2012-07-17

    申请号:US12691056

    申请日:2010-01-21

    IPC分类号: F02M51/00 G06G7/70

    摘要: A method for operating an internal combustion engine configured to operate in a controlled auto-ignition combustion mode and equipped with a mass airflow metering device includes monitoring an engine combustion state, monitoring states of engine operating parameters, calculating a nominal intake air mass flowrate corresponding to the states of the engine operating parameters, estimating an intake air mass flowrate corresponding to the nominal intake air mass flowrate and the engine combustion state, measuring intake air mass flowrate with the mass airflow metering device, comparing the estimated and measured intake air mass flowrates, and detecting a fault related to the mass airflow metering device when a difference between the estimated and measured intake air mass flowrates exceeds a predetermined threshold.

    摘要翻译: 一种用于操作内燃机的方法,其构造成在受控自动点火燃烧模式下操作并配备有质量气流计量装置,包括监测发动机燃烧状态,监测发动机运行参数的状态,计算对应于发动机运行参数的标称进气质量流量 发动机工作参数的状态,估计对应于标称进气质量流量和发动机燃烧状态的进气质量流量,用质量气流计量装置测量进气质量流量,比较估计和测量的进气质量流量, 并且当所述估计和测量的进气质量流量之间的差异超过预定阈值时,检测与所述质量空气流量计量装置相关的故障。

    Method for transition between controlled auto-ignition and spark ignition modes in direct fuel injection engines
    25.
    发明授权
    Method for transition between controlled auto-ignition and spark ignition modes in direct fuel injection engines 有权
    直喷式发动机控制自动点火和火花点火模式之间转换的方法

    公开(公告)号:US07370616B2

    公开(公告)日:2008-05-13

    申请号:US11367045

    申请日:2006-03-02

    摘要: A method is provided for control of transition between combustion modes of a direct-injection engine operable in a homogeneous charge compression ignition (HCCI) mode at lower loads and a spark ignition flame propagation (SI) mode at higher loads. The engine includes a variable valve actuation system including two-step high and low lift valve actuation and separate cam phasing for both intake and exhaust valves. The method includes operating the engine at steady state, with fuel-air-exhaust gas mixtures at predetermined conditions, for each speed and load, and controlling the engine during mode changes between the HCCI mode and the SI mode by switching the exhaust and intake valves between low lift for HCCI operation and high lift for SI operation. High load may be an SI throttled mode with an intermediate unthrottled mode (SI/NTLC} in which transition between HCCI and SI/NTLC modes requires switching only the exhaust valve lift and transition between SI/NTLC and SI throttled modes requires switching only the intake valve lift, with predetermined phase adjustments in the valve timing phasing.

    摘要翻译: 提供了一种用于控制在较低负载下以均质充气压缩点火(HCCI)模式操作的直喷式发动机的燃烧模式之间的过渡和在较高负载下的火花点火火焰传播(SI)模式下的过渡的方法。 发动机包括可变气门驱动系统,其包括两步高和低升程气门致动以及用于进气门和排气门的单独的凸轮定相。 该方法包括:对于每个速度和负载,在预定条件下以稳定状态操作发动机,并且在HCCI模式和SI模式之间的模式转换期间通过切换排气和进气门来控制发动机 在HCCI操作的低电梯和SI操作的高电梯之间。 高负载可能是具有中间非节流模式(SI / NTLC)的SI节流模式,其中HCCI和SI / NTLC模式之间的转换只需要切换排气门升程,SI / NTLC和SI节流模式之间的转换只需要切换进气 气门升程,在气门正时相定相调整。

    METHOD AND APPARATUS TO MONITOR A MASS AIRFLOW METERING DEVICE IN AN INTERNAL COMBUSTION ENGINE
    30.
    发明申请
    METHOD AND APPARATUS TO MONITOR A MASS AIRFLOW METERING DEVICE IN AN INTERNAL COMBUSTION ENGINE 有权
    在内燃机中监测大型气流计量装置的方法和装置

    公开(公告)号:US20110178693A1

    公开(公告)日:2011-07-21

    申请号:US12691056

    申请日:2010-01-21

    IPC分类号: F02D41/00

    摘要: A method for operating an internal combustion engine configured to operate in a controlled auto-ignition combustion mode and equipped with a mass airflow metering device includes monitoring an engine combustion state, monitoring states of engine operating parameters, calculating a nominal intake air mass flowrate corresponding to the states of the engine operating parameters, estimating an intake air mass flowrate corresponding to the nominal intake air mass flowrate and the engine combustion state, measuring intake air mass flowrate with the mass airflow metering device, comparing the estimated and measured intake air mass flowrates, and detecting a fault related to the mass airflow metering device when a difference between the estimated and measured intake air mass flowrates exceeds a predetermined threshold.

    摘要翻译: 一种用于操作内燃机的方法,其构造成在受控自动点火燃烧模式下操作并配备有质量气流计量装置,包括监测发动机燃烧状态,监测发动机运行参数的状态,计算对应于发动机运行参数的标称进气质量流量 发动机工作参数的状态,估计对应于标称进气质量流量和发动机燃烧状态的进气质量流量,用质量气流计量装置测量进气质量流量,比较估计和测量的进气质量流量, 并且当所述估计和测量的进气质量流量之间的差异超过预定阈值时,检测与所述质量空气流量计量装置相关的故障。