-
1.发明授权公开(公告)号：US06594989B1
公开(公告)日：2003-07-22
申请号：US09531096
申请日：2000-03-17
IPC分类号： F01N300
CPC分类号： F01N3/0864 , B01D53/9431 , B01D53/9495 , F01N3/0814 , F01N3/0842 , F01N13/009 , F01N13/0097 , F02D41/0275 , F02D41/1463 , F02D2200/0808 , F02D2200/0811 , F02D2200/0816
摘要： A method and apparatus for controlling the operation of a “lean-burn” internal combustion engine in cooperation with an exhaust gas purification system having an emissions control device capable of alternatively storing and releasing NOx when exposed to exhaust gases that are lean and rich of stoichiometry, respectively, optimizes vehicle fuel economy while complying with emissions standards by prohibiting lean engine operation only when tailpipe emissions, calculated in terms of grams of an exhaust gas constituent per vehicle mile traveled, exceeds a permissible threshold value. The threshold value is preferably itself periodically determined based upon a detected or determined level of vehicle activity, such that vehicle activity characterized by greater transient engine operation prescribes a relatively lower level of permissible vehicle emissions.
摘要翻译： 与具有排放控制装置的废气净化系统协同控制“稀燃”内燃机的操作的方法和装置，当排放气体暴露于稀薄且浓度较高的化学计量 分别优化车辆燃料经济性，同时遵循排放标准，只有当以每车辆行驶的废气成分的克数计算的排气排放超过允许的阈值时，禁止精益发动机运行。 优选地，阈值本身基于检测到的或确定的车辆活动水平来周期性地确定，使得以更大的瞬时发动机操作为特征的车辆活动规定相对较低水平的可允许车辆排放。
-
2.发明授权Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine 有权用于减少稀燃燃烧内燃机的NOx尾气排放的方法和系统公开(公告)号：US06499293B1
公开(公告)日：2002-12-31
申请号：US09528216
申请日：2000-03-17
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N13/009 , F01N2250/12 , F01N2430/06 , F02D41/0275 , F02D41/1462 , F02D41/1465 , F02D2200/0806 , F02D2200/0808 , F02D2200/0811 , Y02T10/24
摘要： A method and apparatus for operating a lean-burn internal combustion engine in cooperation with an exhaust gas purification system having a three-way catalyst and a NOx trap located downstream of the three-way catalyst includes a controller which calculates current levels of tailpipe NOx during lean engine operating conditions based upon the difference between a determined instantaneous feedgas NOx concentration and a determined instantaneous trap efficiency. The controller discontinues lean engine operation when the tailpipe NOx, expressed in terms of either grams-per-mile or grams-per-hour, exceeds a predetermined threshold level, either instantaneously or as averaged over the course of a trap purge-fill cycle.
摘要翻译： 与具有位于三元催化剂下游的三元催化剂和NOx捕集剂的排气净化系统协同操作稀燃内燃机的方法和装置包括：控制器，其计算尾气NOx的当前水平 基于确定的瞬时进料气体NOx浓度与确定的瞬时捕集效率之间的差异的贫油发动机操作条件。 当尾管NOx（以克/英里或克/小时表示）超过预定阈值水平时，控制器将停止精馏发动机运行，即时或在捕集器吹扫 - 填充循环过程中平均。
-
3.发明授权Method and apparatus for controlling lean operation of an internal combustion engine 失效用于控制内燃机的精馏操作的方法和装置公开(公告)号：US06434930B1
公开(公告)日：2002-08-20
申请号：US09528045
申请日：2000-03-17
申请人： Michael John Cullen , David Karl Bidner , Gopichandra Surnilla , Jeffrey Scott Hepburn , Jerry D. Robichaux
发明人： Michael John Cullen , David Karl Bidner , Gopichandra Surnilla , Jeffrey Scott Hepburn , Jerry D. Robichaux
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F02D41/0275 , F02D41/1441 , F02D41/146 , F02D41/1462 , F02D41/1463 , Y02T10/22
摘要： A method and system for controlling the operation of “lean-burn” internal combustion engines determines a current rate of vehicle NOx emissions, and determines a threshold value for permissible vehicle NOx emissions based on at least one current value for the intake air-fuel ratio, engine speed, engine load (e.g., brake torque, manifold air pressure, or throttle position), and/or vehicle speed. A differential NOx emissions rate is calculated as the difference between the current rate and the threshold rate, and the differential rate is accumulated over time to obtain a differential measure representing the amount by which cumulative NOx emissions have fallen below permissible levels therefor. Lean engine operation is disabled when the differential NOx emissions measure exceeds a predetermined excess vehicle NOx emission value. In this manner, vehicle NOx emissions are favorably controlled even when the engine is operated “off-cycle,” i.e., under operating conditions falling outside of the FTP driving cycles.
摘要翻译： 用于控制“稀燃”内燃机的运行的方法和系统确定车辆NOx排放的当前速率，并且基于进气空燃比的至少一个当前值来确定允许的车辆NOx排放的阈值 ，发动机转速，发动机负载（例如，制动转矩，歧管空气压力或节气门位置）和/或车辆速度。 差分NOx排放率被计算为当前速率和阈值比率之间的差异，并且差分速率随时间累积以获得表示累积NOx排放量已经低于其允许水平的量的差异量度。 当差示NOx排放量超过预定的过量车辆NOx排放值时，精益引擎操作被禁用。 以这种方式，即使当发动机“非循环”操作时，即在脱离FTP驱动循环的操作条件下，车辆NOx排放也被有利地控制。
-
公开(公告)号：US06360530B1
公开(公告)日：2002-03-26
申请号：US09528145
申请日：2000-03-17
IPC分类号： F01N300
CPC分类号： F01N3/0864 , F01N3/0814 , F01N3/0842 , F01N13/009 , F01N2250/12 , F01N2430/06 , F02D41/0275 , F02D41/028 , F02D41/1446 , F02D41/1462 , F02D41/1465 , F02D41/187 , F02D2200/0418 , F02D2200/0806 , F02D2200/0811 , F02D2200/501 , F02D2250/36
摘要： A method and apparatus for controlling the operation of a “lean-burn” internal combustion engine in cooperation with an exhaust gas purification system having an emissions control device capable of alternatively storing and releasing NOx when exposed to exhaust gases that are lean and rich of stoichiometry, respectively, optimizes vehicle fuel economy while complying with emissions standards by prohibiting lean engine operation only when tailpipe emissions, calculated in terms of grams of an exhaust gas constituent per vehicle mile traveled, exceeds a permissible threshold value. The threshold value is preferably itself periodically determined based upon a detected or determined level of vehicle activity, such that vehicle activity characterized by greater transient engine operation prescribes a relatively lower level of permissible vehicle emissions.
摘要翻译： 与具有排放控制装置的废气净化系统协同控制“稀燃”内燃机的操作的方法和装置，当排放气体暴露于稀薄且浓度较高的化学计量 分别优化车辆燃料经济性，同时遵循排放标准，只有当以每车辆行驶的废气成分的克数计算的排气排放超过允许的阈值时，禁止精益发动机运行。 优选地，阈值本身基于检测到的或确定的车辆活动水平来周期性地确定，使得以更大的瞬时发动机操作为特征的车辆活动规定相对较低水平的可允许车辆排放。
-
5.发明授权Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine 有权用于减少稀燃燃烧内燃机的NOx尾气排放的方法和系统公开(公告)号：US06684631B2
公开(公告)日：2004-02-03
申请号：US10323548
申请日：2002-12-18
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N13/009 , F01N2250/12 , F01N2430/06 , F02D41/0275 , F02D41/1462 , F02D41/1465 , F02D2200/0806 , F02D2200/0808 , F02D2200/0811 , Y02T10/24
摘要： A method and apparatus for operating a lean-burn internal combustion engine in cooperation with an exhaust gas purification system having a three-way catalyst and a NOx trap located downstream of the three-way catalyst includes a controller which calculates current levels of tailpipe NOx during lean engine operating conditions based upon the difference between a determined instantaneous feedgas NOx concentration and a determined instantaneous trap efficiency. The controller discontinues lean engine operation when the tailpipe NOx, expressed in terms of either grams-per-mile or grams-per-hour, exceeds a predetermined threshold level, either instantaneously or as averaged over the course of a trap purge-fill cycle.
摘要翻译： 与具有位于三元催化剂下游的三元催化剂和NOx捕集剂的排气净化系统协同操作稀燃内燃机的方法和装置包括：控制器，其计算尾气NOx的当前水平 基于确定的瞬时进料气体NOx浓度与确定的瞬时捕集效率之间的差异的贫油发动机操作条件。 当尾管NOx（以克/英里或克/小时表示）超过预定阈值水平时，控制器将停止精益发动机运行，即时或在捕集器吹扫 - 填充循环过程中平均。
-
6.发明授权Method and system for reducing vehicle tailpipe emissions when operating lean 失效运行精益时减少车辆尾气排放的方法和系统公开(公告)号：US06453666B1
公开(公告)日：2002-09-24
申请号：US09884241
申请日：2001-06-19
IPC分类号： F01N300
CPC分类号： F02D41/0275 , F01N3/0842 , F01N2900/1612
摘要： A method and system for operating a lean-burn internal combustion engine in cooperation with an exhaust gas purification system having an emission control device, wherein the system includes a controller which calculates current levels of a selected exhaust gas constituent, such as NOx, during lean engine operating conditions based upon the difference between a determined instantaneous feedgas NOx concentration and a determined instantaneous device efficiency. The controller discontinues lean engine operation when the tailpipe NOx, expressed in terms of either grams-per-mile or grams-per-hour, exceeds a predetermined threshold level, either instantaneously or as averaged over the course of a device purge-fill cycle.
摘要翻译： 与具有排放控制装置的排气净化系统协同操作稀燃内燃机的方法和系统，其中所述系统包括控制器，所述控制器在稀薄的排气系统中计算所选择的排气组分如NO x的电流水平 基于确定的瞬时进料气体NOx浓度与确定的瞬时装置效率之间的差异的发动机操作条件。 当在装置吹扫 - 填充循环的过程中，瞬时地或以平均值计算的尾管NOx（以克/英里/克/小时为单位表示）超过预定阈值水平时，控制器停止精馏发动机操作。
-
7.发明授权Method and system for controlling the temperature of an exhaust system having a variable length exhaust pipe 失效用于控制具有可变长度排气管的排气系统的温度的方法和系统
公开(公告)号：US5855113A
公开(公告)日：1999-01-05
申请号：US829515
申请日：1997-03-28
CPC分类号： F01N3/2046 , F01N13/0097 , F01N3/0842 , F01N3/0871 , F01N3/0885 , F01N3/2006 , F02D41/1441 , F01N2240/02 , F01N2250/12 , F01N2410/00 , F01N2570/04 , F01N2900/1612 , F02D2200/0402 , Y02T10/24 , Y02T10/26
摘要： A method and system for controlling the temperature of an exhaust system having a variable length exhaust pipe including a short path and a long path and an exhaust valve positioned in the exhaust pipe for regulating the flow of exhaust gas between the short path and the long path utilizes control logic for estimating a plurality of exhaust temperatures at various locations on the exhaust system. A plurality of maximum temperatures are also determined. The plurality of estimated exhaust temperatures are then compared with the plurality of maximum temperatures, and if a preselected number of the plurality of exhaust temperatures exceed the plurality of maximum temperatures, the exhaust valve is controlled so that the exhaust gas flows through the long path of the exhaust pipe so as to aid in cooling the exhaust gas.
摘要翻译： 一种用于控制排气系统的温度的方法和系统，所述排气系统具有包括短路径和长路径的可变长度排气管和位于排气管中的排气门，用于调节短路径和长路径之间的废气流 利用控制逻辑来估计排气系统上各个位置处的多个排气温度。 还确定了多个最大温度。 然后将多个估计的排气温度与多个最大温度进行比较，并且如果多个排气温度的预选数量超过多个最大温度，则排气门被控制，使得废气流过 排气管，以帮助排气的冷却。
-
8.发明授权公开(公告)号：US06820597B1
公开(公告)日：2004-11-23
申请号：US10794492
申请日：2004-03-05
IPC分类号： F02M3302
CPC分类号： F02M25/0809 , F02D17/02 , F02M25/0872 , F02M25/089
摘要： Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, catalyst design, and exhaust system design.
摘要翻译： 公开了用于在车辆的一些或所有发动机气缸中的燃料切断操作中进行燃烧的各种系统和方法。 此外，考虑了各种子系统，例如燃料蒸气吹扫，空燃比控制，发动机转矩控制，催化剂设计和排气系统设计。
-
9.发明授权Computer instructions for control of multi-path exhaust system in an engine 有权用于控制发动机中多通道排气系统的计算机指令公开(公告)号：US06754578B1
公开(公告)日：2004-06-22
申请号：US10401055
申请日：2003-03-27
IPC分类号： G06F1700
CPC分类号： F02D17/02 , F02D41/1497 , F02D2200/0402 , F02D2200/1006 , F02D2250/18
摘要： A computer controller is described for disabling fuel injection into cylinder groups of an engine. The system controls engine output a reduced engine torques without reducing engine air amounts below an engine misfire amount by reducing the number of cylinders carrying out combustion. Engine airflow is controlled to maintain accurate torque at requested levels throughout engine operating ranges.
摘要翻译： 描述了一种用于禁止燃料喷射到发动机的气缸组中的计算机控制器。 该系统通过减少进行燃烧的气缸数来控制发动机输出，减少发动机扭矩，而不会使发动机空气量低于发动机失火量。 发动机气流被控制以在整个发动机工作范围内保持精确的转矩。
-
10.发明授权
公开(公告)号：US5832722A
公开(公告)日：1998-11-10
申请号：US829291
申请日：1997-03-31
IPC分类号： F01N3/20 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/22 , F01N3/24 , F01N3/32 , F01N9/00 , F02D41/02 , F01N3/00
CPC分类号： F01N3/0842 , B01D53/8696 , B01D53/9431 , B01D53/9495 , F01N3/0885 , F01N3/22 , F02D41/028 , F01N2570/04 , F01N3/32 , F02D2200/0818 , Y02T10/24
摘要： An engine control computer estimates the cumulative SO.sub.x stored in a NO.sub.x trap and enters a SO.sub.x purge mode of operation when a maximum storage capacity limit is exceeded. SO.sub.x accumulation is estimated based on fuel flow to the engine, A/F and trap temperature. The purge mode is terminated when the estimated SO.sub.x storage level drops below a minimum threshold level during the purging operation.
摘要翻译： 发动机控制计算机估计存储在NOx捕集器中的累积SOx，并且当超过最大存储容量极限时，进入SOx清除操作模式。 基于发动机的燃料流量，A / F和捕集温度估计SOx积累。 当净化操作期间估计的SOx储存水平降到最低阈值水平以下时，清除模式终止。
-
-
-
-
-
-
-
-
-
搜索结果
104 条记录 (耗时 0.029 秒)
