公开(公告)号：US06754578B1

公开(公告)日：2004-06-22

申请号：US10401055

申请日：2003-03-27

申请人： David Karl Bidner ,  Gopichandra Surnilla ,  Michael John Cullen ,  Shane Elwart

发明人： David Karl Bidner ,  Gopichandra Surnilla ,  Michael John Cullen ,  Shane Elwart

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。

公开(公告)号：US06736120B2

公开(公告)日：2004-05-18

申请号：US10064018

申请日：2002-06-04

申请人： Gopichandra Surnilla

发明人： Gopichandra Surnilla

IPC分类号： F02D4114

CPC分类号： F02D41/0087 ,  F01N2560/025 ,  F02D41/0032 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/0082 ,  F02D41/0275 ,  F02D41/1456 ,  F02D41/187 ,  F02D41/2441 ,  F02D41/2448 ,  F02D41/2454 ,  F02D41/2474 ,  F02D41/3029 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0802 ,  F02D2250/18

摘要： A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pumping air only (i.e., without fuel injection). In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

摘要翻译： 公开了一种用于控制与排气处理催化剂相连的发动机的操作的方法。 在预定条件下，该方法操作具有燃烧贫空气/燃料混合物的第一组气缸的发动机和仅抽吸空气（即，不进行燃料喷射）的第二组气缸。 此外，发动机控制方法还结合上述分离空气/稀薄模式提供以下特征：怠速控制，传感器诊断，空气/燃料比控制，自适应学习，燃料蒸气吹扫，催化剂温度估计，默认值 操作，排气和排放控制装置的温度控制。 此外，发动机控制方法还改变为在预选操作条件下的所有气缸中燃烧，例如燃料蒸气吹扫，歧管真空控制和排放控制装置中存储的氧化剂的清洗。

公开(公告)号：US06735938B2

公开(公告)日：2004-05-18

申请号：US10064020

申请日：2002-06-04

申请人： Gopichandra Surnilla

发明人： Gopichandra Surnilla

IPC分类号： F01N300

CPC分类号： F02D41/0087 ,  B60K31/00 ,  F02D37/02 ,  F02D41/003 ,  F02D41/0275 ,  F02D2250/21 ,  Y10T477/80 ,  Y10T477/87

摘要： A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pumping air only (i.e., without fuel injection). In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

摘要翻译： 公开了一种用于控制与排气处理催化剂相连的发动机的操作的方法。 在预定条件下，该方法操作具有燃烧贫空气/燃料混合物的第一组气缸的发动机和仅抽吸空气（即，不进行燃料喷射）的第二组气缸。 此外，发动机控制方法还结合上述分离空气/稀薄模式提供以下特征：怠速控制，传感器诊断，空气/燃料比控制，自适应学习，燃料蒸气吹扫，催化剂温度估计，默认值 操作，排气和排放控制装置的温度控制。 此外，发动机控制方法还改变为在预选操作条件下的所有气缸中燃烧，例如燃料蒸气吹扫，歧管真空控制和排放控制装置中存储的氧化剂的清洗。

公开(公告)号：US06691669B2

公开(公告)日：2004-02-17

申请号：US10065129

申请日：2002-09-19

申请人： Gopichandra Surnilla ,  John M. Roth

发明人： Gopichandra Surnilla ,  John M. Roth

IPC分类号： F02B1700

CPC分类号： F02D41/1463 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/005 ,  F01N13/009 ,  F01N13/011 ,  F01N13/107 ,  F01N2430/02 ,  F01N2430/06 ,  F01N2430/08 ,  F01N2560/026 ,  F01N2570/14 ,  F02D37/02 ,  F02D41/0082 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/1453 ,  F02D41/1456 ,  F02D41/187 ,  F02D41/2461 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0802 ,  Y02T10/47

摘要： A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pumping air only (i.e., without fuel injection). In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

摘要翻译： 公开了一种用于控制与排气处理催化剂相连的发动机的操作的方法。 在预定条件下，该方法操作具有燃烧贫空气/燃料混合物的第一组气缸的发动机和仅抽吸空气（即，不进行燃料喷射）的第二组气缸。 此外，发动机控制方法还结合上述分离空气/稀薄模式提供以下特征：怠速控制，传感器诊断，空气/燃料比控制，自适应学习，燃料蒸气吹扫，催化剂温度估计，默认值 操作，排气和排放控制装置的温度控制。 此外，发动机控制方法还改变为在预选操作条件下的所有气缸中燃烧，例如燃料蒸气吹扫，歧管真空控制和排放控制装置中存储的氧化剂的清洗。

公开(公告)号：US06629453B1

公开(公告)日：2003-10-07

申请号：US09527867

申请日：2000-03-17

申请人： Gopichandra Surnilla ,  David Karl Bidner

发明人： Gopichandra Surnilla ,  David Karl Bidner

IPC分类号： G01M1500

CPC分类号： F01N3/0864 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N2250/12 ,  F01N2430/06 ,  F02D41/0275 ,  F02D41/1462 ,  F02D41/1463 ,  F02D2200/0802 ,  F02D2200/0806 ,  F02D2200/0811

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 an exhaust gas constituent, such as NOx, when exposed to exhaust gases that are lean and rich of stoichiometry, respectively, wherein a measure of the efficiency of the device to remove the exhaust gas constituent from engine exhaust gas is determined, and a purge event for releasing previously-stored NOx is initiated when the efficiency measure falls below a threshold value.

摘要翻译： 与具有排放控制装置的排气净化系统协同控制“稀燃”内燃机的操作的方法和装置，其能够在暴露于废气时可替代地存储和释放诸如NOx的废气组分 分别稀释并且富含化学计量的气体，其中确定了从发动机废气中去除排气成分的装置的效率的量度，并且当效率测量下降时，开始用于释放预先存储的NOx的吹扫事件 低于阈值。

公开(公告)号：US06594989B1

公开(公告)日：2003-07-22

申请号：US09531096

申请日：2000-03-17

申请人： Jeffrey Scott Hepburn ,  Gopichandra Surnilla ,  Jerry D. Robichaux ,  Michael John Cullen

发明人： Jeffrey Scott Hepburn ,  Gopichandra Surnilla ,  Jerry D. Robichaux ,  Michael John Cullen

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。

公开(公告)号：US06591604B2

公开(公告)日：2003-07-15

申请号：US09884592

申请日：2001-06-19

申请人： Gopichandra Surnilla ,  Grant Alan Ingram

发明人： Gopichandra Surnilla ,  Grant Alan Ingram

IPC分类号： F01N300

CPC分类号： F01N3/0842 ,  F01N3/0814 ,  F01N11/007 ,  F01N2550/02 ,  F01N2570/04 ,  F01N2570/14 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/47

摘要： An improved method for monitoring an efficiency of a three-way catalyst coupled in an exhaust passage of an internal combustion engine is presented. First, a reference efficiency estimate (shortly after a SOx purge) is generated based on several data points obtained during normal vehicle driving conditions over varying device temperatures. Next, a current efficiency estimate is obtained from several data points. The two estimates are compared to obtain a measure of reduction in the catalyst efficiency due to device sulfation.

摘要翻译： 提出了一种用于监测联接在内燃机的排气通道中的三元催化剂的效率的改进方法。 首先，基于在正常车辆驾驶条件下在变化的装置温度下获得的几个数据点来生成参考效率估计（在SOx吹扫之后不久）。 接下来，从几个数据点获得电流效率估计。 比较两个估计值以获得由于装置硫酸化引起的催化剂效率降低的量度。

公开(公告)号：US06574953B1

公开(公告)日：2003-06-10

申请号：US10012577

申请日：2001-11-29

申请人： Grant Alan Ingram ,  Gopichandra Surnilla ,  Jeffrey Scott Hepburn ,  John M. Roth ,  Joseph Robert Theis

发明人： Grant Alan Ingram ,  Gopichandra Surnilla ,  Jeffrey Scott Hepburn ,  John M. Roth ,  Joseph Robert Theis

IPC分类号： F01N300

CPC分类号： F01N3/0842 ,  F01N3/05 ,  F01N3/0814 ,  F01N3/0871 ,  F01N13/009 ,  F01N2240/02 ,  F01N2430/06 ,  F01N2430/08 ,  F01N2570/14 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2011/102 ,  F02D2041/0265 ,  F02D2200/0406 ,  Y02A50/2344 ,  Y02T10/22 ,  Y02T10/24

摘要： A method for improving a purge conversion efficiency of a Lean NOx Trap coupled downstream of a lean-burn internal combustion engine is presented. This method recognizes that during a purge of the LNT, its temperature increases due to the exothermic reactions in the LNT. Once the LNT temperature exceeds a certain threshold, further increases lead to a reduction in the NOx storage capacity, and therefore an increase in NOx emissions during the purge of the LNT. Therefore, it is proposed to cool the LNT temperature once the threshold is exceeded. This method improves emission control and fuel economy during purge.

摘要翻译： 提出了一种用于提高在稀燃内燃机下游耦合的精益NOx捕集阱的净化转换效率的方法。 该方法认识到，在LNT的吹扫期间，其温度由于LNT中的放热反应而增加。 一旦LNT温度超过某一阈值，进一步的增加导致NOx储存容量的降低，并因此导致在清洗LNT期间NOx排放的增加。 因此，建议在超过阈值后冷却LNT温度。 这种方法可以改善排放控制和清洁过程中的燃油经济性。

公开(公告)号：US06553757B1

公开(公告)日：2003-04-29

申请号：US09992257

申请日：2001-11-19

申请人： Gopichandra Surnilla ,  Grant Alan Ingram

发明人： Gopichandra Surnilla ,  Grant Alan Ingram

IPC分类号： F01N300

CPC分类号： F01N3/0842 ,  F01N3/0814 ,  F01N2430/06 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1463 ,  F02D41/187 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0804 ,  Y02T10/24

摘要： A method for improving a purge conversion efficiency of a Lean NOx Trap coupled downstream of a lean-burn internal combustion engine is presented. This method proposes adjusting the purge air-fuel ratio of the device based on its temperature. According to the proposed method, a less rich air-fuel ratio is provided at lower operating temperatures to reduce hydrocarbon emissions since within this temperature range air-fuel ratio does not have a significant affect on NOx emissions. At mid-range operating temperatures, the air-fuel ratio is gradually decreased (made more rich) to reduce NOx emissions. And, finally, at high operating temperatures, HC and NOx emissions are reduced, and therefore, the purge air-fuel is kept at a constant more rich value. This method improves emission control and fuel economy during purge.

摘要翻译： 提出了一种用于提高在稀燃内燃机下游耦合的精益NOx捕集阱的净化转换效率的方法。 该方法建议基于其温度来调节装置的吹扫空燃比。 根据所提出的方法，在较低的操作温度下提供较不丰富的空燃比以减少碳氢化合物排放，因为在该温度范围内，空燃比对NOx排放没有显着影响。 在中等工作温度下，空燃比逐渐下降（更丰富），以减少NOx排放。 最后，在高运行温度下，HC和NOx的排放量减少，因此，净化空气燃料保持在更加丰富的恒定值。 这种方法可以改善排放控制和清洁过程中的燃油经济性。

公开(公告)号：US06467259B1

公开(公告)日：2002-10-22

申请号：US09884563

申请日：2001-06-19

申请人： Gopichandra Surnilla ,  David George Farmer

发明人： Gopichandra Surnilla ,  David George Farmer

IPC分类号： F01N300

CPC分类号： F02D41/0082 ,  F01N3/0842 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F02D41/0275 ,  F02D41/1443 ,  F02D2041/389

摘要： An exhaust gas treatment system for an internal combustion engine includes a pair of upstream emission control devices which respectively receive the exhaust gas generated by a respective group of cylinders, and a single, shared downstream emission control device receiving catalyzed exhaust gas from each of the upstream emission control devices. After the downstream device stores a selected constituent gas generated when each cylinder group is operating “lean,” the downstream device is purged by operating the first cylinder group with a stoichiometric air-fuel mixture while operating the second cylinder group with a rich air-fuel mixture, such that the combined catalyzed exhaust gas flowing through the downstream device during the purge event has an air-fuel ratio slightly rich of stoichiometry. As a result, the invention improves overall vehicle fuel economy because only one of the upstream devices is purged of stored oxygen when purging the downstream device of previously-stored constituent gas.

摘要翻译： 用于内燃机的废气处理系统包括分别接收由相应气缸组产生的废气的一对上游排放控制装置，以及从上游侧的每一个接收催化废气的单个共用下游排放控制装置 排放控制装置。 在下游装置存储当每个气缸组正在运行时产生的所选择的构成气体“稀薄”时，通过用化学计量空气 - 燃料混合物操作第一气缸组来清洗下游装置，同时用富空燃料操作第二气缸组 使得在净化事件期间流过下游装置的合并的催化废气具有略高于化学计量的空燃比。 结果，本发明提高了总体车辆燃料经济性，因为当清除预先存储的构成气体的下游装置时，只有一个上游装置被清除存储的氧气。