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    • 11. 发明授权
    • Power supply system with function of short circuit detection
    • 具有短路检测功能的电源系统
    • US07656116B2
    • 2010-02-02
    • US12181733
    • 2008-07-29
    • Takehiro YanoTetsu NaganoDaisuke Fukuda
    • Takehiro YanoTetsu NaganoDaisuke Fukuda
    • H02P27/04
    • H02H7/0838
    • There are provided upper and lower switching elements 1U to 1W and 2U to 2W for energizing motor drive windings 4U to 4W, a control circuit 20 that starts outputting a control signal for energization based on an energization instruction, pre-drive circuits 8U to 8W and 9U to 9W for controlling ON/OFF of the upper and lower switching elements based on the control signal, and short circuit detection circuits 10U to 10W for detecting short circuits in a node 14 between the upper and lower switching elements to higher-potential and lower-potential power sources based on the control signal and a voltage of the node. The short circuit detection circuits are controlled to detect a short circuit in the node to the lower-potential power source with all the upper switching elements turned ON and all the lower switching elements turned OFF and to detect a short circuit in the node to the higher-potential power source with all the upper switching elements turned OFF and all the lower switching elements turned ON, in a state where the motor drive windings are not energized. It is possible to prevent a situation in which a short circuit cannot be detected depending on a resistance component of a drive target.
    • 设置用于对电动机驱动绕组4U〜4W供电的上下开关元件1U〜1W和2U〜2W,基于通电指令开始输出用于通电的控制信号的控制电路20,预驱动电路8U〜8W, 9U至9W,用于根据控制信号控制上下开关元件的ON / OFF;以及短路检测电路10U至10W,用于检测上下开关元件之间的节点14中的短路到较高电位和较低电位 基于控制信号的电源和节点的电压。 控制短路检测电路,以便在所有上部开关元件导通并且所有下部开关元件断开并且将节点中的短路检测到较高的电平时检测节点中的低电位电源的短路 在电动机驱动绕组未被通电的状态下,所有上部开关元件关闭并且所有下部开关元件导通的电位电源。 可以防止根据驱动目标的电阻分量而不能检测短路的情况。
    • 15. 发明授权
    • Engine exhaust gas purifier
    • 发动机废气净化器
    • US07426922B2
    • 2008-09-23
    • US11802417
    • 2007-05-22
    • Daisuke ShimoMotoshi KataokaMasahiko FujimotoDaisuke Fukuda
    • Daisuke ShimoMotoshi KataokaMasahiko FujimotoDaisuke Fukuda
    • F02M25/07
    • F02D41/005F02B29/0406F02D41/403F02M26/05F02M26/06F02M26/15F02M26/23F02M26/38Y02T10/44Y02T10/47
    • An engine exhaust gas purifier includes: an injection controller allowing a fuel injection valve to inject fuel near the top dead center on each compression stroke; an EGR amount controller for controlling the amount of exhaust gas recirculated into a combustion chamber; an excess air ratio controller for controlling the excess air ratio so that the local equivalence ratio in a late combustion stage is lower than the equivalence ratio at which soot is produced; and an intake air temperature controller for controlling the temperature of intake air after being mixed with exhaust gas. The intake air temperature controller controls the temperature of intake air within a temperature range lower than an upper temperature limit below which a predetermined ignition delay time can be secured and higher than a lower temperature limit above which the production of HC and CO can be avoided.
    • 发动机废气净化器包括:喷射控制器,允许燃料喷射阀在每个压缩行程上喷射靠近上止点的燃料; 用于控制再循环到燃烧室中的废气量的EGR量控制器; 用于控制过量空气比的过量空气比控制器,使得后期燃烧阶段的局部当量比低于产生烟灰的当量比; 以及用于控制与废气混合后的进气温度的进气温度控制器。 进气温度控制器控制在比可以确保预定点火延迟时间的上限温度以下的温度范围内的进气温度,并且高于可以避免HC和CO的产生的较低温度限制。