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1. 发明授权

US5983876A System and method for detecting and correcting cylinder bank imbalance 失效
标题翻译：气缸组不平衡检测和校正的系统和方法
公开(公告)号：US5983876A
公开(公告)日：1999-11-16
申请号：US33377
申请日：1998-03-02
申请人： John M. Irons , Gregg Greathouse , Scott G. Decker
发明人： John M. Irons , Gregg Greathouse , Scott G. Decker
IPC分类号： F02B75/18 , F02B75/22 , F02B77/08 , F02D41/14 , F02D41/16
CPC分类号： F02D41/1497 , F02B2075/1832 , F02B75/22 , F02B77/08
摘要： A system and method for detecting and correcting power imbalance between cylinder banks of an internal combustion engine utilizes, in one embodiment, temperature sensors at the exhaust manifolds for each cylinder bank. A differential temperature value .DELTA. is generated and used to determine which cylinder requires modification of its operating conditions to equalize the power output between the opposing banks. In one embodiment, the sign of the value .DELTA. is used to determine which cylinder bank has the highest exhaust temperature, and the value .DELTA. is provided as a multiplier to engine operating algorithms implemented by the engine control computer to derate the subject cylinder bank. In another embodiment, the value .DELTA. is used to uprate the bank having the lower exhaust temperature, indicative of a lower power output.
摘要翻译：在一个实施例中，用于检测和校正内燃机气缸组之间的功率不平衡的系统和方法在每个气缸组的排气歧管处利用温度传感器。产生差分温度值DELTA并用于确定哪个气缸需要修改其工作条件以均衡相对组之间的功率输出。在一个实施例中，值DELTA的符号用于确定哪个气缸组具有最高的排气温度，并且将值DELTA作为发动机操作计算机实现的发动机运行算法的乘数来提供，以降低对象汽缸组的额定值。在另一个实施例中，值DELTA用于升高具有较低排气温度的组，表示较低的功率输出。

2. 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。

3. 发明授权

US06601442B1 Duty cycle monitoring system for an engine 有权
标题翻译：发动机的占空比监控系统
公开(公告)号：US06601442B1
公开(公告)日：2003-08-05
申请号：US09400666
申请日：1999-09-20
申请人： Scott G. Decker , Gregory G. Greathouse , John M. Irons
发明人： Scott G. Decker , Gregory G. Greathouse , John M. Irons
IPC分类号： G01P2100
CPC分类号： G07C5/085 , F02D41/2451 , F02D41/263
摘要： A system and method for monitoring engine performance utilizes a monitoring micro-controller that integrates with an engine/vehicle controller to receive data indicative of the current operating conditions of the engine/vehicle. A duty cycle map is defined within the micro-controller by a plurality of sectors bounded by a specific performance curve based on two or more engine operating parameters, such as engine torque and speed. Each sector corresponds to a range of values for the specific operating parameters. During iterations of the monitoring routine, current data indicative of the specific engine operating parameters is sensed and compared with the range of values for each duty cycle sector. A duty cycle parameter, such as elapsed time or fuel consumption, is maintained for each sector. When the current engine operating conditions fall within a particular target sector, its corresponding duty cycle parameter is updated. This process is continued over several iterations to define a duty cycle map over a predetermined number of engine operating hours. In one embodiment, a long term map is accumulated between engine rebuilds, for example. In another embodiment, the long term duty cycle map is augmented by sequentially accessed short term maps, each storing duty cycle information for much shorter engine hours. The duty cycle maps can be used to evaluate engine maintenance requirements or suggest modifications to engine control routines and fueling strategies.
摘要翻译：用于监测发动机性能的系统和方法利用与发动机/车辆控制器集成的监控微控制器来接收指示发动机/车辆的当前操作条件的数据。基于两个或多个发动机工作参数（例如发动机扭矩和速度），通过由特定性能曲线界定的多个扇区在微控制器内定义占空比图。每个扇区对应于特定操作参数的值范围。在监视程序的迭代期间，检测指示特定发动机运行参数的当前数据，并将其与每个占空比扇区的值的范围进行比较。对于每个扇区维持占空比参数，例如经过时间或燃料消耗。当当前的发动机工作条件落在特定目标扇区内时，其相应的占空比参数被更新。该过程在多次迭代中持续以在预定数量的发动机运转小时上定义占空比图。在一个实施例中，例如，在发动机重建之间累积长期地图。在另一个实施例中，通过顺序访问的短期映射增加长期占空比图，每个存储占空比信息用于短得多的发动机小时。占空比图可用于评估发动机维护要求或建议对发动机控制程序和加油策略的修改。

4. 发明授权

US6101442A System and method for detecting a valve-related fault condition for an internal combustion engine 有权
标题翻译：用于检测内燃机阀相关故障状况的系统和方法
公开(公告)号：US6101442A
公开(公告)日：2000-08-08
申请号：US213786
申请日：1998-12-17
申请人： Edward J. Lewandowski , Scott G. Decker
发明人： Edward J. Lewandowski , Scott G. Decker
IPC分类号： F01L3/24 , F01L1/46 , F02D13/02 , F02D41/22 , F02D45/00 , G01M15/00
CPC分类号： F02D41/221 , F01L1/46 , F01L2800/00 , F02D2041/001 , F02D2200/0414 , Y02T10/40
摘要： A system and method for detecting a fault condition in an internal combustion engine utilizes the intake air temperatures at each of a plurality of cylinder sections of the engine. An average value of the plurality of intake air temperatures is compared to each of the individual temperatures at discrete time increments. The rate of change of each intake air temperature relative to the average temperature value is assessed to determine if a valve-related fault condition has occurred. In a further feature of the system and method, a plurality of temperature differential values over several time increments are differentiated. The resulting plurality of differentiated values are integrated, or summed, over the time period, which result is compared to a threshold value indicative of a valve-related failure.
摘要翻译：用于检测内燃机的故障状况的系统和方法利用发动机的多个汽缸部分中的每一个的进气温度。以离散时间增量将多个进气温度的平均值与每个单独的温度进行比较。评估每个进气温度相对于平均温度值的变化率，以确定是否发生了与阀相关的故障状况。在该系统和方法的另一个特征中，差分多个时间增量的多个温度差值。所得到的多个差分值在时间段内被积分或相加，该结果与指示阀相关故障的阈值进行比较。

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