-
21.发明申请NON-INTRUSIVE EXHAUST GAS SENSOR MONITORING BASED ON FUEL VAPOR PURGE OPERATON 有权基于燃油蒸气泵操作的非吸入式气体传感器监测公开(公告)号：US20140067235A1
公开(公告)日：2014-03-06
申请号：US13599744
申请日：2012-08-30
CPC分类号： F02D41/1454 , F01N11/007 , F02D41/003 , F02D41/0035 , F02D41/123 , F02D41/1486 , F02D41/1495 , Y02T10/47
摘要： A method of monitoring an exhaust gas sensor coupled in an engine exhaust in an engine is provided. The method includes adjusting engine operation responsive to exhaust gas sensor degradation, the degradation identified during deceleration fuel shut-off (DFSO) and compensated based on whether vapor purge operation is occurring in the engine during DFSO.
摘要翻译： 提供了一种监测联接在发动机的发动机排气中的排气传感器的方法。 该方法包括响应于废气传感器劣化，在减速燃料切断（DFSO）期间识别出的劣化并基于在DFSO期间是否在发动机中进行蒸汽吹扫操作来补偿的发动机运行。
-
公开(公告)号：US06257194B1
公开(公告)日：2001-07-10
申请号：US09630481
申请日：2000-08-02
IPC分类号： F02B7700
CPC分类号： F01L1/34 , F01L13/00 , F01L13/0005 , F01L2800/03 , F02B75/10 , F02D13/08 , F02D41/042 , F02D2041/001 , Y02T10/18
摘要： A shutdown method for an internal combustion engine having deactivatable intake and exhaust valves is disclosed in which unburned fuel existing within the engine at the time of shutdown is managed to prevent its release into the atmosphere.
摘要翻译： 公开了一种具有可停用进气门和排气门的内燃机的关闭方法，其中，在停机时存在于发动机内的未燃燃料被管理以防止其释放到大气中。
-
公开(公告)号：US20130180510A1
公开(公告)日：2013-07-18
申请号：US13352931
申请日：2012-01-18
CPC分类号： F02D41/1495 , F02D2041/1423 , F02D2041/1431 , F02D2041/1433
摘要： A method of monitoring an exhaust gas sensor coupled in an engine exhaust is provided. The method comprises indicating exhaust gas sensor degradation based on a difference between a first set of estimated parameters of a rich operation model and a second set of estimated parameters of a lean operation model, the estimated parameters based on commanded lambda and determined lambda values collected during selected operating conditions. In this way, sensor degradation may be indicated with data collected in a non-intrusive manner.
摘要翻译： 提供了一种监测联接在发动机排气中的废气传感器的方法。 该方法包括基于富运行模型的第一组估计参数与稀薄运行模型的估计参数的第二组之间的差异来指示排气传感器退化，基于指令λ和所确定的λ值的估计参数 选定的运行条件。 以这种方式，可以用非侵入式收集的数据来指示传感器劣化。
-
24.发明授权Fuel/air ratio feedback control with catalyst gain estimation for an internal combustion engine 有权用于内燃机的催化剂增益估计的燃料/空气比反馈控制公开(公告)号：US07000379B2
公开(公告)日：2006-02-21
申请号：US10454059
申请日：2003-06-04
IPC分类号： F01N3/00
CPC分类号： F02D41/0295 , F01N11/007 , F01N13/0097 , F02D41/1402 , F02D41/1441 , F02D2041/1419 , F02D2041/1422 , F02D2041/1433 , Y02T10/47
摘要： A system and method for controlling an internal combustion engine for low emissions include an inner feedback control loop to control the engine fuel/air ratio with feedback provided by a first exhaust gas sensor and an outer feedback control loop that modifies the fuel/air ratio reference provided to the inner feedback control loop based on feedback signals provided by the first exhaust gas sensor and a second exhaust gas sensor. The fuel/air ratio reference signal controller adapts to the oxygen storage capacity of the catalyst by modeling the catalyst as an integrator with an unknown gain and estimating the catalyst gain based on the first and second exhaust gas sensor signals. Using the estimated catalyst gain, an adaptive controller gain factor is determined and subsequently used to determine the fuel/air ratio reference signal provided to the fuel/air ratio controller of the inner feedback control loop.
摘要翻译： 用于控制用于低排放的内燃机的系统和方法包括内部反馈控制回路，以通过由第一废气传感器提供的反馈来控制发动机燃料/空气比，以及改变燃料/空气比参考的外部反馈控制回路 基于由第一废气传感器和第二废气传感器提供的反馈信号，提供给内部反馈控制回路。 燃料/空气比参考信号控制器通过将催化剂模拟为具有未知增益的积分器并基于第一和第二排气传感器信号估计催化剂增益来适应催化剂的储氧能力。 使用估计的催化剂增益，确定自适应控制器增益因子并随后用于确定提供给内部反馈控制回路的燃料/空气比控制器的燃料/空气比参考信号。
-
25.发明授权Valve timing system for dynamically suppressing cylinder knock within a camless engine 有权用于动态抑制无凸轮发动机内的气缸撞击的气门正时系统公开(公告)号：US06390040B1
公开(公告)日：2002-05-21
申请号：US09611868
申请日：2000-07-07
IPC分类号： F01L1300
CPC分类号： F02D13/0215 , F01L9/04 , F02D13/0253 , F02D13/0265 , F02D13/0269 , F02D35/027 , F02D41/0002 , F02D41/008 , F02D2041/001 , Y02T10/142 , Y02T10/18 , Y02T10/42
摘要： A valve timing system 10 is provided for dynamically suppressing cylinder knock within an internal combustion engine. The engine is of the type including several cylinders 12, each having intake and exhaust valves 14, 16. Valve timing system 10 includes a controller 24, sensors 30, and actuators 26, 28 which selectively actuate valves 14, 16 in response to signals received from controller 24. Controller 24 identifies knocking within one or more of cylinder(s) 12, and provides a modified control signal to the valve actuators 26, 28 which are associated with the identified cylinder(s). The modified control signal alters the duration in which the valves 14, 16 remain open, thereby suppressing knocking within the cylinder(s) without adversely effecting the vehicle's fuel economy or emissions.
摘要翻译： 提供了一种气门正时系统10，用于动态地抑制内燃机内的气缸爆震。 发动机是包括多个气缸12的类型，每个气缸具有进气和排气阀14,16。气门正时系统10包括控制器24，传感器30和致动器26,28，其响应于接收到的信号选择性地致动阀14,16 控制器24识别一个或多个气缸12内的爆震，并且向与所识别的气缸相关联的阀致动器26,28提供经修改的控制信号。 修改的控制信号改变阀14,16保持打开的持续时间，从而抑制气缸内的敲击，而不会不利地影响车辆的燃料经济性或排放。
-
公开(公告)号：US06363715B1
公开(公告)日：2002-04-02
申请号：US09561643
申请日：2000-05-02
申请人： David Karl Bidner , Gopichandra Sumilla , Imad Hassan Makki , James Michael Kerns , Stephen B. Smith
发明人： David Karl Bidner , Gopichandra Sumilla , Imad Hassan Makki , James Michael Kerns , Stephen B. Smith
IPC分类号： F01N300
CPC分类号： F02D41/1408 , F02D41/0235 , F02D41/146 , F02D41/1475 , F02D2041/142 , F02D2200/0602
摘要： An air/fuel control method for an engine including a NOx sensor in operative relationship to a catalytic converter. The method comprises the steps of providing a base fuel signal related to a quantity of air inducted into the engine and generating a bias signal for biasing the base fuel signal towards a leaner air/fuel ratio. The output of the NOx sensor is monitored to detect a predetermined exhaust gas NOx value representing a predefined NOx conversion efficiency. The base fuel signal is then modified as a function of the bias signal corresponding to the predetermined exhaust gas NOx value to maintain the catalytic converter within a desired efficiency range. In one aspect of the invention, the process of detecting the edge of the NOx conversion efficiency window is executed at predetermined time periods measured by the distance the vehicle traveled, or the elapsed time since last base fuel value modification.
摘要翻译： 一种用于包括与催化转化器操作关系的NOx传感器的发动机的空气/燃料控制方法。 该方法包括以下步骤：提供与引入发动机的空气量相关的基本燃料信号，并产生用于将基本燃料信号偏向较冷空气/燃料比的偏置信号。 监测NOx传感器的输出以检测表示预定的NOx转化效率的预定排气NOx值。 然后基本燃料信号作为与预定排气NOx值对应的偏置信号的函数被修改，以将催化转化器维持在期望的效率范围内。 在本发明的一个方面，检测NOx转化效率窗口的边缘的过程是在由车辆行驶的距离测量的预定时间段或从最后基本燃料值修改开始的经过时间之后执行的。
-
公开(公告)号：US06352490B1
公开(公告)日：2002-03-05
申请号：US09498141
申请日：2000-02-04
IPC分类号： B60R4102
CPC分类号： B60W10/06 , B60W10/04 , B60W10/10 , B60W10/11 , B60W30/18 , B60W30/1819 , B60W2510/0671 , B60W2710/0622 , F02D37/02 , F02D41/0057 , F02D41/0225 , F02D41/1406 , F02D41/3029 , F02D41/3076 , F02D2200/0625 , F16H61/0213 , F16H2061/0015 , F16H2061/0087 , Y02T10/47 , Y02T10/52 , Y02T10/54 , Y02T10/56 , Y02T10/84 , Y10T477/6407
摘要： A method of generating a shift schedule and combustion mode schedule to optimize performance characteristics of a lean capable, multiple combustion mode engine with a time-variant after-treatment system is disclosed. The method comprises the steps of generating a lowest cost value for fuel economy and vehicle emissions as a function of an engine operating mode, wherein the engine operating mode is selected from a group consisting of a homogeneous stoichiometric mode, a homogeneous lean mode, and a stratified mode. The lowest cost value is stored in a shift schedule and combustion mode schedule along with the engine operating parameters that achieved the lowest cost value.
摘要翻译： 公开了一种产生换档计划和燃烧模式计划以优化具有时变后处理系统的能力良好的多燃烧模式发动机的性能特征的方法。 该方法包括以下步骤：产生作为发动机工作模式的函数的燃料经济性和车辆排放物的最低成本值，其中发动机操作模式选自均匀化学计量模式，均匀稀薄模式和 分层模式。 最低成本值与实现最低成本值的发动机运行参数一起存储在换档计划和燃烧模式调度中。
-
28.发明授权Non-intrusive exhaust gas sensor monitoring based on fuel vapor purge operation 有权基于燃油蒸气清洗操作的非侵入性废气传感器监测公开(公告)号：US09188045B2
公开(公告)日：2015-11-17
申请号：US13599744
申请日：2012-08-30
CPC分类号： F02D41/1454 , F01N11/007 , F02D41/003 , F02D41/0035 , F02D41/123 , F02D41/1486 , F02D41/1495 , Y02T10/47
摘要： A method of monitoring an exhaust gas sensor coupled in an engine exhaust in an engine is provided. The method includes adjusting engine operation responsive to exhaust gas sensor degradation, the degradation identified during deceleration fuel shut-off (DFSO) and compensated based on whether vapor purge operation is occurring in the engine during DFSO.
摘要翻译： 提供了一种监测联接在发动机的发动机排气中的排气传感器的方法。 该方法包括响应于废气传感器劣化，在减速燃料切断（DFSO）期间识别出的劣化并基于在DFSO期间是否在发动机中进行蒸汽吹扫操作来补偿的发动机运行。
-
公开(公告)号：US08958974B2
公开(公告)日：2015-02-17
申请号：US13352931
申请日：2012-01-18
IPC分类号： F02D41/14
CPC分类号： F02D41/1495 , F02D2041/1423 , F02D2041/1431 , F02D2041/1433
摘要： A method of monitoring an exhaust gas sensor coupled in an engine exhaust is provided. The method comprises indicating exhaust gas sensor degradation based on a difference between a first set of estimated parameters of a rich operation model and a second set of estimated parameters of a lean operation model, the estimated parameters based on commanded lambda and determined lambda values collected during selected operating conditions. In this way, sensor degradation may be indicated with data collected in a non-intrusive manner.
摘要翻译： 提供了一种监测联接在发动机排气中的废气传感器的方法。 该方法包括基于富运行模型的第一组估计参数与稀薄运行模型的估计参数的第二组之间的差异来指示排气传感器退化，基于指令λ和所确定的λ值的估计参数 选定的运行条件。 以这种方式，可以用非侵入式收集的数据来指示传感器劣化。
-
公开(公告)号：US20130180509A1
公开(公告)日：2013-07-18
申请号：US13352885
申请日：2012-01-18
CPC分类号： F01N11/00 , F02D41/1441 , F02D41/1474 , F02D41/1495 , F02D2041/1431 , F02D2041/286
摘要： A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on characteristics of a distribution of extreme values of a plurality of sets of lambda differentials collected during selected operating conditions. In this way, the exhaust gas sensor may be monitored in a non-intrusive manner.
摘要翻译： 提供一种用于监测联接在发动机排气中的废气传感器的方法。 在一个实施例中，该方法包括基于在选择的操作条件期间收集的多组λ差分的极值的分布的特性来指示废气传感器劣化。 以这种方式，废气传感器可以以非侵入的方式被监视。
-
-
-
-
-
-
-
-
-
搜索结果
31 条记录 (耗时 0.029 秒)
