公开(公告)号：US5540202A

公开(公告)日：1996-07-30

申请号：US539243

申请日：1995-10-04

申请人： Michael J. Cullen ,  Robert M. Marzonie ,  Alan R. Dona ,  Eric. J. Grant ,  Ronald A. Yannone ,  Patrick J. Eggers

发明人： Michael J. Cullen ,  Robert M. Marzonie ,  Alan R. Dona ,  Eric. J. Grant ,  Ronald A. Yannone ,  Patrick J. Eggers

IPC分类号： F02D41/02 ,  F02D41/14 ,  F02P5/15 ,  F02P5/14

CPC分类号： F02P5/1506 ,  F02D41/024 ,  F02D41/2454 ,  F02D2200/0804 ,  F02D41/2477 ,  Y02T10/26 ,  Y02T10/46

摘要： An electronic ignition timing system which cooperates with an adaptive closed loop fuel control system to provide more rapid heating of an exhaust catalyst by retarding the ignition tinning during colds starts only after an index of maturity value has been generated to indicate that fuel control parameters which characterize an individual engine have been adaptively learned and are available to operate the engine with a lean mixture during cold idling conditions. The index of maturity value alters the mode of operation of the fuel control mechanism to provide robust rich operation prior to adaptation and a more aggressive lean mode operation after the adaptive parameters have been developed which permit optimized operation, and alters the ignition timing to retard the spark to more rapidly heat the exhaust catalyst. A mechanism responsive to the estimated temperature of the catalyst restores the spark advance when the catalyst has been heated, and also restores the spark advance when the throttle is depressed.

摘要翻译： 一种电子点火正时系统，其与适应性闭环燃料控制系统配合，以在冷启动期间通过延迟点火镀层来提供更快速的加热排气催化剂，仅在已经产生了成熟度值的指标之后，表明燃料控制参数 单个发动机已经被自适应地学习，并且可以在冷空转条件下用稀混合物来操作发动机。 成熟度值的指标改变燃料控制机构的运行模式，以便在自适应参数被开发之后，在自适应之前提供稳健的丰富的操作，并且在开发了适应性参数之后进行更积极的精益模式操作，其允许优化的操作，并改变点火正时以延迟 火花更快地加热排气催化剂。 当催化剂被加热时，响应于催化剂的估计温度的机构恢复火花提前，并且当节流阀被压下时还恢复火花提前。

公开(公告)号：US5617836A

公开(公告)日：1997-04-08

申请号：US538928

申请日：1995-10-04

申请人： Michael J. Cullen ,  Robert M. Marzonie ,  Alan R. Dona ,  Eric J. Grant ,  Ronald A. Yannone

发明人： Michael J. Cullen ,  Robert M. Marzonie ,  Alan R. Dona ,  Eric J. Grant ,  Ronald A. Yannone

IPC分类号： F02D45/00 ,  F02D41/14 ,  F02D41/24 ,  G05B13/02

CPC分类号： F02D41/2454

摘要： An adaptive closed loop fuel control system generates an index of maturity value which indicates the extent to which parameters which characterize an individual engine have been learned and stored for future use in a non-volatile memory. A timer produces the index of maturity value by measuring the elapsed time during which the fuel control system has successfully operated the engine at or near stoichiometry within a predetermined range of engine speed and load conditions. A backup mechanism counts the number of HEGO sensor state changes as the closed loop controller operates in an adaptive mode, setting the index of maturity to a predetermined value even when the measured adaptation time fails to indicate an adequate amount of adaptive operation. The index of maturity value alters the mode of operation of the fuel control mechanism to provide robust rich operation prior to adaptation and a more aggressive lean mode operation after the adaptive parameters have been developed which permit optimized operation in the presence of air-to-fuel ratio production variability.

摘要翻译： 自适应闭环燃料控制系统产生成熟度值索引，其指示已经学习并存储特征的各个引擎的参数在将来在非易失性存储器中的使用的程度。 定时器通过测量燃料控制系统在发动机速度和负载条件的预定范围内成功地操作发动机或接近化学计量的时间来产生成熟度值的指数。 随着闭环控制器以自适应模式操作，备用机构对HEGO传感器状态改变的数量进行计数，即使当测量的适应时间未能指示足够量的自适应操作时，将成熟度指标设置为预定值。 成熟度值的指数改变了燃料控制机构的运行模式，以便在适应性参数开发之后，在空气燃料的存在下优化运行时，在适应之前提供稳健的丰富的运行和更积极的精益模式运行 比例生产变异性。

公开(公告)号：US5483941A

公开(公告)日：1996-01-16

申请号：US141177

申请日：1993-10-25

申请人： Michael J. Cullen ,  Robert M. Marzonie ,  Joseph N. Ulrey ,  Richard W. Sbaschnig ,  Michael A. Weyburne ,  Paul C. Mingo

发明人： Michael J. Cullen ,  Robert M. Marzonie ,  Joseph N. Ulrey ,  Richard W. Sbaschnig ,  Michael A. Weyburne ,  Paul C. Mingo

IPC分类号： F01N3/24 ,  F02D17/02 ,  F02D41/00 ,  F02D41/04 ,  F02D41/22 ,  F02D41/36 ,  F02D7/00

CPC分类号： F02D17/02 ,  F02D41/0087 ,  F02D2200/0606

摘要： A method, for use with a vehicle including a multi-cylinder internal combustion engine having exhaust valves, for controlling the temperature of the exhaust valves during fuel cutoff modes of engine operation utilizing a bit pattern representation of the engine cylinders. The method includes cutting off the fuel delivered to the cylinders in an indexed cylinder firing pattern to vary which cylinders receive fuel, so as to maintain acceptable exhaust valve temperature levels. The method may also include operating the engine with a lean air/fuel ratio, so as to maintain acceptable catalytic converter temperature levels.

摘要翻译： 一种用于包括具有排气阀的多缸内燃机的车辆的方法，用于利用发动机气缸的位图形表示来控制发动机操作的燃料切断模式期间排气门的温度。 该方法包括以指定的气缸燃烧模式切断输送到气缸的燃料，以改变哪些气缸接收燃料，从而保持可接受的排气阀温度水平。 该方法还可以包括以稀薄空气/燃料比操作发动机，以便保持可接受的催化转化器温度水平。