会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Engine controller
    • 发动机控制器
    • US5875762A
    • 1999-03-02
    • US17690
    • 1998-02-03
    • Kenichi TsuchiyaShiro YonezawaHirofumi OhuchiTadashi Tubakiji
    • Kenichi TsuchiyaShiro YonezawaHirofumi OhuchiTadashi Tubakiji
    • F02D9/02F02D11/10F02D41/24F02D41/08F02M3/07
    • F02D41/28F02D11/106
    • An engine controller includes various sensors for detecting a degree of throttle opening .theta. and a degree of accelerator opening .alpha. and a control unit 5 for determining the control amount .theta.c of a throttle actuator 1 from operating states, the control unit includes an A/D converter 70 for A/D converting respective degrees of opening at a predetermined resolving power, means 71 for calculating a target degree of throttle opening .theta.1 at a resolving power higher than the predetermined resolving power, means 72 for calculating a target degree of throttle opening .theta.2 at the predetermined resolving power in accordance with the target degree of throttle opening .theta.1 and means 73 for calculating a control amount in accordance with the target degree of throttle opening .theta.2, the target degree of throttle opening .theta.2 includes two points which are determined by the predetermined resolving power and control amount calculation means repeatedly controls the throttle actuator at a predetermined cycle using the target degree of throttle opening .theta.2 as the control amount under predetermined operating conditions. With this arrangement, the engine controller having a high speed and a pinpoint accuracy can be provided at a less expensive cost without using an expensive A/D converter.
    • 发动机控制器包括用于检测节气门开度θ和加速器开度α的各种传感器,以及用于确定节气门执行器1的运行状态的控制量θc的控制单元5,控制单元包括A / D 转换器70,用于以预定分辨率转换相应的开度;装置71,用于以高于预定分辨率的分辨率计算节气门开度θ1的目标程度;装置72,用于计算目标节气门开度 根据目标节气门开度θ1的预定分辨率的θ2和用于根据目标节气门开度θ2计算控制量的装置73,目标节气门开度θ2包括两点, 由预定的分辨力确定,并且控制量计算装置重复地控制节气门致动器 或者在预定的操作条件下使用目标节气门开度θ2作为控制量。 通过这种布置,可以在不使用昂贵的A / D转换器的情况下以较便宜的成本提供具有高速度和精确定位精度的发动机控制器。
    • 9. 发明授权
    • Fault detecting apparatus for exhaust gas recirculation control system
of internal combustion engine
    • 内燃机排气再循环控制系统故障检测装置
    • US5488938A
    • 1996-02-06
    • US397641
    • 1995-03-02
    • Hirofumi Ohuchi
    • Hirofumi Ohuchi
    • G01M15/04F02B77/08F02D41/22F02M25/07
    • F02D41/0055F02M26/49F02D2200/0406F02M26/57Y02T10/47
    • A fault detecting apparatus for an exhaust gas recirculation control system of an internal combustion engine includes a throttle valve provided in an intake pipe of the engine, an exhaust gas recirculation pipe for introducing an exhaust gas of the engine to the intake pipe downstream of the throttle valve, an exhaust gas recirculation valve for regulating a recirculation flow rate of the exhaust gas, sensors for detecting operation state inclusive of an intake pressure, an exhaust gas recirculation valve control unit for controlling the exhaust gas recirculation valve in accordance with operation state information, a fault decision enabling condition detecting means for detecting satisfaction of the condition enabling the decision about occurrence of fault in the recirculation valve control unit on the basis of the operation state information, a unit for forcibly opening and/or closing the exhaust gas recirculation valve when the fault decision enabling condition is satisfied, a fault decision means for comparing a value derived from the intake pressures detected upon enforcive opening/closing of the exhaust gas recirculation control valve with a fault decision reference value to decide whether any fault occurs in the recirculation valve control unit, and a compensation means for compensating for influence of a parameter which affects the intake pressures detected upon enforcive opening/closing of the recirculation valve. The range within which the fault decision is enabled can be widened and/or reliability of the fault decision can be improved.
    • 一种用于内燃机的废气再循环控制系统的故障检测装置,包括设置在发动机的进气管内的节流阀,用于将发动机的排气引入到节气门下游的进气管的排气再循环管 阀,用于调节废气的再循环流量的排气再循环阀,用于检测包括进气压力的运行状态的传感器,用于根据运行状态信息控制排气再循环阀的排气再循环阀控制单元, 故障判定启用条件检测装置,用于基于操作状态信息来检测能够判定再循环阀控制单元中的故障的发生的状态的满足度;强制打开和/或关闭排气再循环阀的单元, 故障判定使能条件满足,故障 决定装置,用于将从排气再循环控制阀的强制性打开/关闭检测到的进气压力导出的值与故障判定基准值进行比较,以决定在再循环阀控制单元中是否发生故障;以及补偿装置, 影响在强制开启/关闭再循环阀时检测到的进气压力的参数的影响。 可以扩大启用故障判定的范围,提高故障判定的可靠性。