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公开(公告)号：US5159810A
公开(公告)日：1992-11-03
申请号：US750173
申请日：1991-08-26
CPC分类号： F01N11/007 , F01N13/009 , F02D41/1474 , F01N2550/02 , Y02T10/47
摘要： An exhaust gas oxygen sensor downstream of a catalytic converter is used to control a closed loop air/fuel ratio control system. A measured limit cycle frequency at various engine speed/load conditions is compared to stored benchmark limit cycle frequencies as functions of engine speed/load conditions. If the measured frequency is higher, the catalytic converter is considered to be degraded.
摘要翻译： 催化转化器下游的废气氧传感器用于控制闭环空燃比控制系统。 将各种发动机速度/负载条件下的测量极限循环频率与存储的基准限制循环频率作为发动机转速/负载条件的函数进行比较。 如果测得的频率较高，则催化转化器被认为是劣化的。
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公开(公告)号：US5547435A
公开(公告)日：1996-08-20
申请号：US340916
申请日：1994-11-17
IPC分类号： B60K28/16 , F16H59/14 , F16H59/24 , F16H59/36 , F16H59/50 , F16H59/74 , F16H59/76 , F16H61/02 , B60K41/10
CPC分类号： B60K28/16 , F16H59/24 , F16H61/0213 , B60W2510/0657 , B60W2710/0666 , F16H2059/506 , F16H59/14 , F16H59/36 , F16H59/74 , F16H59/76 , Y10T477/679
摘要： A method and system for controlling gear ratio changes of a transmission operating in a powertrain with an internal combustion engine controlled by an engine throttle and having a device, such as traction assist system, that alters engine torque from that corresponding to the position of the throttle. The control substitutes a synthetic throttle position for actual throttle position during a traction assist event. Gearshifts occur with reference to a schedule relating the desired gear, vehicle speed, and synthetic throttle position.
摘要翻译： 一种用于控制由发动机节气门控制的内燃机在动力系中运行的变速器的变速比变化的方法和系统，并且具有将发动机扭矩从对应于节流阀的位置改变的装置，例如牵引辅助系统 。 在牵引辅助事件期间，控制器将合成节气门位置替换为实际节气门位置。 参考与期望的档位，车辆速度和合成节气门位置相关的时间表发生变速。
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