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1. 发明授权

US4309971A Adaptive air/fuel ratio controller for internal combustion engine 失效
标题翻译：内燃机自适应空燃比控制器
公开(公告)号：US4309971A
公开(公告)日：1982-01-12
申请号：US142331
申请日：1980-04-21
申请人： Alan F. Chiesa , David G. Evans , James R. Norford , John A. Zahorchak
发明人： Alan F. Chiesa , David G. Evans , James R. Norford , John A. Zahorchak
IPC分类号： F02D41/14 , F02D41/24 , F02D41/26 , F02D45/00 , F02B3/00
CPC分类号： F02D41/2445 , F02D41/2422 , F02D41/2451 , F02D41/26 , F02D41/2454
摘要： An air/fuel ratio controller for an internal combustion engine including two memories each having numbers stored at locations addressed by engine operating points with the locations addressed by the engine operating points being updated during closed loop operation in accord with the value of a closed loop adjustment of the air/fuel ratio. Each memory location in the first memory is updated during operation of the engine at the corresponding operating point in accord with an update time constant having a value so that the number stored tracks adjustment value producing the predetermined desired closed loop air/fuel ratio during varying values of engine operating parameters. Each memory location in the second memory is updated during operation of the engine at the corresponding operating point in accord with an update time constant having a value so that the number stored is the average of the values producing the predetermined closed loop air/fuel ratio during varying values of engine operating parameters. The first memory is used during closed loop operation to preset the closed loop adjustment at least when the engine first operates at an operating point and the second memory is utilized during open loop operation to adjust the air/fuel ratio by an amount determined at least in part by the number stored in the second memory at locations addressed by the engine operating point.
摘要翻译：一种用于内燃机的空燃比控制器，其包括两个存储器，每个存储器具有存储在由发动机操作点寻址的位置处的数量，其中由闭环运行期间的发动机工作点寻址的位置根据闭环调节值被更新的空气/燃料比。根据具有值的更新时间常数，在发动机在相应工作点的运行期间更新第一存储器中的每个存储器位置，使得存储的数量轨道在变化值期间产生预定的所需闭环空燃比的调节值的发动机运行参数。根据具有值的更新时间常数，在对应的工作点的发动机运转期间，第二存储器中的每个存储器位置被更新，使得所存储的数量是产生预定闭环空燃比的值的平均值变化的发动机运行参数值。在闭环操作期间使用第一存储器来至少在发动机首先在操作点操作时预先设置闭环调节，并且在开环操作期间利用第二存储器以将空燃比调整至少在部分由在发动机工作点寻址的位置处存储在第二存储器中的数量。

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