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    • 85. 发明公开
    • FAULT DIAGNOSIS DEVICE FOR REDUCING AGENT SUPPLY DEVICE, AND REDUCING AGENT SUPPLY DEVICE
    • 故障诊断装置对设备发出对问题进行还原剂的还原剂和设备
    • EP2660437A1
    • 2013-11-06
    • EP11854191.1
    • 2011-09-07
    • Bosch Corporation
    • NAGATA Masayasu
    • F01N3/36F01N3/08F01N3/18
    • F01N3/08F01N3/2066F01N11/00F01N2550/05F01N2550/14F01N2560/08F01N2610/02F01N2610/1433F01N2610/144F01N2610/146F01N2900/0416F01N2900/0418F01N2900/1806F01N2900/1808F01N2900/1821F01N2900/1822Y02T10/24Y02T10/47
    • [Problem] To provide a reducing agent supply apparatus abnormality diagnosis unit that can reduce the limitation on when to perform abnormality diagnosis and on the applicability of abnormality diagnosis to facilitate the implementation of abnormality diagnosis of a reducing agent supply apparatus and to provide the reducing agent supply apparatus.
      [Means for Resolution] The reducing agent supply apparatus abnormality diagnosis unit includes: a reducing agent injection valve controller for determining an energization on/off duty ratio according to an instructed injection amount of the reducing agent to issue an instruction for driving the reducing agent injection valve; a pump controller for determining an energization on/off duty ratio to issue an instruction for driving the pump so that the pressure in the reducing agent passage is maintained at a predetermined system pressure, based on the difference between the detected pressure in the reducing agent passage and the system pressure; and an abnormality determiner for performing abnormality determination of the reducing agent supply apparatus based on the duty ratio of the reducing agent injection valve and the duty ratio of the pump in a predetermined period.
    • [问题]为了提供一种还原剂供给装置的异常诊断单元确实可以减少对何时执行异常诊断和异常诊断的适用性的限制,以便于还原剂供给装置的异常诊断的执行,并提供还原剂 供给装置。 [用于解决所述还原剂供给装置的异常诊断单元,包括:用于通电的确定性采矿开/关占空比雅丁于在还原剂的指示的喷射量的还原剂喷射阀控制器上的指令发出用于驱动还原剂喷射 阀门; 用于开/关占空比问题上指令通电确定性采矿泵控制器用于驱动泵所以没有在还原剂路径内的压力被保持在一个预定的系统压力的基础上,在还原剂通路所检测到的压力之间的差 和系统压力; 和异常判断用于执行基于该还原剂喷射阀的占空比和所述泵的在预定时段的占空比还原剂供给装置的异常判定。
    • 86. 发明公开
    • SECONDARY AIR SUPPLY APPARATUS AND CONTROL METHOD FOR THE SAME
    • 二次供气装置及其控制方法
    • EP1784562A1
    • 2007-05-16
    • EP05779789.6
    • 2005-08-15
    • TOYOTA JIDOSHA KABUSHIKI KAISHA
    • MURAGUCHI, Tomokazu, Toyota Jidosha K.K.
    • F01N3/32F02B77/08
    • F01N3/22F01N3/32F01N11/00F01N13/011F01N13/107F01N2550/14F02D41/0002F02D41/062F02D2200/0406Y02T10/20Y02T10/42Y02T10/47
    • An ECU executes (300) a program including a step (S202) of opening an electromagnetic ASV (232) while a vacuum pressure ASV (1) and a vacuum pressure ASV (2) are controlled so as to be closed, and an air pump (200) is controlled so as to be stopped in a case where an air amount GA that is an amount of air introduced into an engine (100) is equal to or larger than a predetermined air amount GA (0), and a coolant temperature TW at the starting time of the engine is equal to or higher than a predetermined coolant temperature TW (0) ('YES' in step S200); a step (S204) of detecting a pressure; a step (S206) of closing the electromagnetic ASV; and a step (S402) of determining that failure has occurred in at least one of the vacuum pressure ASV (1) and the vacuum pressure ASV (2), that is, one of the vacuum pressure ASV (1) and the vacuum pressure ASV (2) remains in an opened state and cannot be closed when there is a pulsation of the pressure that is detected while the electromagnetic ASV is opened ('YES' in step S400).
    • 在真空压力ASV(1)和真空压力ASV(2)被控制为关闭的同时,ECU执行(300)包括打开电磁ASV(232)的步骤(S202)的程序,并且空气泵 (200)被控制成在引入发动机(100)的空气量即空气量GA等于或大于预定空气量GA(0)的情况下停止,并且冷却剂温度 在发动机起动时的TW等于或高于预定的冷却剂温度TW(0)(步骤S200中的“是”); 检测压力的步骤(S204) 关闭电磁ASV的步骤(S206); 以及在真空压力ASV(1)和真空压力ASV(2)中的至少一个即真空压力ASV(1)和真空压力ASV(2)中的至少一个中确定已发生故障的步骤(S402) (2)保持打开状态,并且当在电磁ASV打开时检测到的压力脉动时(步骤S400中的“是”),不能关闭。