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1. 发明授权

US6112150A Fault recognition system and method for an internal combustion engine 有权
标题翻译：内燃机故障识别系统及方法
公开(公告)号：US6112150A
公开(公告)日：2000-08-29
申请号：US289553
申请日：1999-04-09
申请人： John M. Irons , Edward J. Lewandowski , Scott G. Decker , Gregg G. Greathouse , Irfan Tusneem
发明人： John M. Irons , Edward J. Lewandowski , Scott G. Decker , Gregg G. Greathouse , Irfan Tusneem
IPC分类号： F02D45/00 , F02D41/22 , F02D41/26 , G05B9/02 , G05B23/02 , G06G7/76 , G06F17/00
CPC分类号： F02D41/266 , F02D41/22
摘要： A fault recognition system is implemented as an adjunct to fault determination software of an on-board engine control module (ECM). The ECM activates a "Type A" or "Type B" fault code for each signal received from a plurality of sensors disposed about the engine when that signal exceeds a predetermined threshold. A "Type C" fault is recognized and activated when all of a predetermined group of underlying "Type A" or "Type B" fault codes have been activated. The "Type C" fault is displayed, while the underlying faults may or may not be displayed. The "Type C" fault provides a better and more immediate indication of the source of the engine problem than any of the underlying faults. Only those underlying faults that aid in the recognition of the source of the engine problem are displayed. The remaining faults underlying the "Type C" fault are masked. When the "Type C" fault becomes inactive, any underlying fault codes are unmasked for subsequent evaluation. To avoid false positives or negatives, all of the underlying faults must be activated for a predetermined period before the "Type C" fault will be activated. Likewise, before the "Type C" fault is de-activated, at least one of the underlying faults must be inactive for a predetermined period.
摘要翻译：故障识别系统被实现为车载发动机控制模块（ECM）的故障确定软件的附件。当该信号超过预定阈值时，ECM为从发动机周围设置的多个传感器接收的每个信号激活“A型”或“B型”故障代码。当所有基本的“A型”或“B型”故障代码组都被激活时，识别并激活“C型”故障。显示“C型”故障，而底层故障可能显示也可能不显示。 “C型”故障提供了比任何潜在故障更好和更直接的指示发动机问题的来源。仅显示有助于识别发动机问题源的潜在故障。 “C型”故障的其余故障被屏蔽。当“类型C”故障变为无效时，任何潜在的故障代码都将被屏蔽以供后续评估。为了避免误报或否定，在“C型”故障被激活之前，所有的底层故障必须被激活一段预定的时间。类似地，在“类型C”故障被去激活之前，至少一个潜在故障必须在预定的时间段内是无效的。

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