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1.发明授权
公开(公告)号：EP1134375B1
公开(公告)日：2009-12-16
申请号：EP01302359.3
申请日：2001-03-14
CPC分类号： F01N3/0864 , F01N3/0807 , F01N3/0842 , F02D41/0275 , F02D41/1446 , F02D41/1458 , F02D41/146 , F02D41/1465 , F02D41/187 , F02D41/3029 , Y02T10/22 , Y02T10/24
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2.发明公开Method and apparatus for enhancing fuel economy of a lean-burn internal combustion engine 有权一种用于改进内燃机的燃料经济性与稀薄燃烧的方法和装置
公开(公告)号：EP1134397A3
公开(公告)日：2005-07-13
申请号：EP01302435.1
申请日：2001-03-16
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 (12) in co-operation with an exhaust gas purification system having an emissions control device (34,36) capable of alternatively storing and releasing NO x when exposed to exhaust gases that are lean and rich of stoichiometry, respectively, optimises 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 travelled, 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 characterised by greater transient engine operation prescribes a relatively lower level of permissible vehicle emissions.
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公开(公告)号：EP1314869B1
公开(公告)日：2004-11-03
申请号：EP02102621.6
申请日：2002-11-21
CPC分类号： F02D41/1441 , F02D41/1454 , F02D41/1495 , F02D41/222 , Y02T10/22 , Y02T10/40
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4.发明公开Method and apparatus for enabling lean engine operation upon engine start-up 有权对于Lischen的方法和装置使内燃机起动时稀燃
公开(公告)号：EP1134370A3
公开(公告)日：2003-10-29
申请号：EP01302349.4
申请日：2001-03-14
CPC分类号： F01N3/0842 , F01N13/009 , F01N13/0097 , F02D41/0275 , F02D41/042 , F02D41/062 , F02D41/1441 , F02D41/1446 , F02D41/1454 , F02D2200/0806 , F02D2200/0818 , F02D2250/36 , Y02T10/24
摘要： A method and system for controlling the operation of "lean-burn" internal combustion engines (12), wherein initial values for measures representing current levels of NO x and SO x stored in an emissions control device (36), such as a lean NO x trap, upon vehicle start-up are determined based at least in part upon values for the measures immediately preceding engine shut-off. Such initial values obviate the need for performing a purge event immediately upon engine start-up in appropriate circumstances, such as a brief engine shut-down, whereby the fuel economy penalty associated with such an initial purge event is avoided.
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公开(公告)号：EP1134393A3
公开(公告)日：2003-09-10
申请号：EP01302338.7
申请日：2001-03-14
CPC分类号： F01N3/0842 , F01N13/009 , F02D41/0275 , F02D41/3076 , F02D2200/0806 , F02D2200/0811
摘要： A method and apparatus for controlling the operation of a "lean-burn" internal combustion engine in co-operation with an exhaust gas purification system having an emissions control device capable of alternatively storing and releasing NO x when exposed to exhaust gases that are lean and rich of stoichiometry, respectively, determines a performance impact, such as a fuel-economy benefit, of operating the engine at a selected lean operating condition, with due consideration of the periodic rich operating condition necessary to release stored NO x from the device. The method and apparatus further determine a measure representative of the instantaneous NO x -storing efficiency of the device. The method and apparatus enable the selected lean operating condition as long as the determined performance impact and the determined device efficiency are each above respective predetermined minimum levels.
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6.发明公开Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent 有权用于评估Abgaskomponentspeicherungsfähigkeit稀燃NOx吸附的方法和装置
公开(公告)号：EP1134387A2
公开(公告)日：2001-09-19
申请号：EP01301423.8
申请日：2001-02-19
CPC分类号： F01N3/0864 , F01N3/0807 , F01N3/0842 , F02D41/027 , F02D41/0275 , F02D41/028 , F02D2200/0806 , F02D2200/0808 , F02D2200/0811 , F02D2200/0816 , Y02T10/24
摘要： A method and apparatus for controlling the operation of a "lean-burn" internal combustion engine in co-operation with an emissions control device capable of alternatively storing and releasing an exhaust gas constituent, such as oxygen, when exposed to exhaust gases that are lean and rich of stoichiometry, respectively, determines an ability of the device only when the engine is operating at a relatively-low mass air flow rate.
摘要翻译： 一种用于在排放控制装置与控制所述操作“贫燃”内燃机的共同操作能够可选地存储和的废气成分，：如氧，当暴露于排气并是稀释放的方法和设备 和浓于化学计量的，分别仅当发动机在相对低的空气质量流量操作该装置的能力确定的地雷率。
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公开(公告)号：EP1134376A2
公开(公告)日：2001-09-19
申请号：EP01302372.6
申请日：2001-03-14
CPC分类号： F01N3/0864 , F01N3/0814 , F01N3/0842 , F01N13/009 , F01N2250/12 , F01N2430/06 , F02D41/0275 , F02D41/146 , F02D41/1462 , F02D41/1463 , F02D2200/0806 , F02D2200/0811 , Y02T10/24
摘要： An engine control system of an internal combustion engine coupled to a NOx trap (72) uses a integrated difference between NOx exiting the trap (72) and NOx entering the trap (72) to determine NOx storage capacity. NOx exiting the trap is measured by a NOx sensor downstream of the trap. NOx entering the trap (72) is determined based on engine operating conditions. The values are integrated until the ratio of NOx exiting to NOx entering reaches a predetermined threshold.
摘要翻译： 耦合到NOx捕集器（72）的内燃机的发动机控制系统使用离开捕集器（NOX）的NOx和进入捕集器（72）的NOx之间的积分差异来确定NOx存储容量。 通过位于捕集器下游的NOx传感器来测量离开捕集阱的NOx。 进入捕集器（72）的NOx基于发动机操作条件来确定。 这些值被积分，直到NOx排出的NOx的比例达到预定的阈值。
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公开(公告)号：EP0869268A3
公开(公告)日：2000-10-18
申请号：EP98302471.2
申请日：1998-03-31
CPC分类号： F02D41/0042
摘要： Fuel vapours are periodically purged from a fuel system into an engine's air/fuel intake (44). A measurement of the massive inductive fuel vapours is provided by a purge compensation signal is derived from an exhaust gas oxygen sensor (76) output. Lean air/fuel operation is enabled when the purge compensation signal is below a predetermined value.
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公开(公告)号：EP1134378A3
公开(公告)日：2004-07-28
申请号：EP01302322.1
申请日：2001-03-14
CPC分类号： F01N3/0842 , F01N11/00 , F01N11/007 , F01N2550/03 , F01N2560/026 , F02D41/0275 , F02D41/1441 , F02D41/1454 , F02D41/1458 , F02D41/146 , F02D41/1462 , F02D41/1463 , F02D41/148 , F02D41/1495 , F02D2200/0806 , Y02T10/24 , Y02T10/47
摘要： An engine diagnostic system for use with an internal combustion engine (11) coupled to a lean NOx trap (72) with a sensor coupled downstream of the trap (72). The sensor provides two output signals, one indicative of an air-fuel ratio and the second indicative of a NOx concentration. Construction of the sensor (140) insists that proper indication of NOx concentration is dependent upon proper operation of the first output signal. Degradation of the NOx concentration signal is determined when the first output signal has degraded.
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公开(公告)号：EP1134369A3
公开(公告)日：2003-11-05
申请号：EP01302325.4
申请日：2001-03-14
CPC分类号： F01N3/0842 , F01N2570/04 , F02D41/028 , F02D41/1446 , F02D2200/0625 , F02D2200/501 , Y02T10/24
摘要： An engine control system for managing lean NOx trap decontamination uses associated fuel economy impacts to determine when decontamination is enabled. In particular, a maximum achievable benefit provided by lean operation with a decontaminated NOx trap, a present fuel economy benefit being provided by lean operation, and a fuel economy penalty for performing decontamination are used. When a resulting benefit is greater than a penalty, decontamination is enabled.
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