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    • 1. 发明授权
    • Torque control scheme for low emission lean burn vehicle
    • 低排放稀燃车辆扭矩控制方案
    • US06253546B1
    • 2001-07-03
    • US09519202
    • 2000-03-06
    • Jing SunIlya Vladimir KolmanovskyJulia Helen BucklandMathew Alan Boesch
    • Jing SunIlya Vladimir KolmanovskyJulia Helen BucklandMathew Alan Boesch
    • F01N900
    • F01N3/0842F02D37/02F02D41/0065F02D41/0275F02D41/307F02D2041/141F02D2200/0406F02D2250/21Y02T10/24
    • A method of minimizing torque disturbances in an internal combustion engine for a vehicle having a lean NOx trap that is periodically purged. The method includes the steps of generating feedforward values of first engine characteristics as a function of desired engine torque and generating feedback values of second engine characteristics as a function of intake manifold pressure. Target values are then calculated for predetermined engine variables based on the first and second engine characteristics. Engine variables are then set to the target values to compensate for torque disturbances resulting from the lean NOx trap purge cycle. According to the disclosed method, the feedforward path schedules the throttle, fuel rate and spark timing based on an engine model to produce a demanded engine torque. The feedback path then uses the values of fuel rate and spark timing to compensate for torque variations. This is accomplished by determining an error term as a function of a reference trajectory intake manifold pressure and measured intake manifold pressure.
    • 一种使具有周期性净化的贫NOx捕集器的车辆内燃机的转矩扰动最小化的方法。 该方法包括以下步骤:根据期望的发动机扭矩产生第一发动机特性的前馈值,并产生作为进气歧管压力的函数的第二发动机特性的反馈值。 然后基于第一和第二发动机特性为预定的发动机变量计算目标值。 然后将发动机变量设置为目标值,以补偿由稀NOx排气净化循环引起的扭矩扰动。 根据所公开的方法,前馈路径基于发动机模型调度节气门,燃料速率和火花正时,以产生所需的发动机扭矩。 然后,反馈路径使用燃料速率和火花正时的值来补偿扭矩变化。 这是通过确定作为参考轨迹进气歧管压力和测量的进气歧管压力的函数的误差项来实现的。
    • 4. 发明授权
    • Method and system for estimating cylinder charge for internal combustion engines having variable valve timing
    • 用于估计具有可变气门正时的内燃机的气缸充气量的方法和系统
    • US06850831B2
    • 2005-02-01
    • US10289591
    • 2002-11-07
    • Julia Helen BucklandIlya V. KolmanovskyJing SunJoseph Scillieri
    • Julia Helen BucklandIlya V. KolmanovskyJing SunJoseph Scillieri
    • F02D41/00F02D41/18F02M25/07G01M99/00G06G7/70G01M19/00
    • F02D41/0062F02D41/18F02D2041/001F02D2200/0402Y02T10/47
    • A method for determining cylinder air charge and/or cylinder burned gas for an internal combustion engine system. The engine system includes cylinders, each one of such cylinders having at least one intake valve and at least one exhaust valve in communication with such cylinder. The method determines one of a plurality of different scenarios, each one of the scenarios representing a geometrical relationship between opening and closing of the intake valve relative to closing of the exhaust valve. The cylinder air charge and/or cylinder burned gas is calculated in accordance with the determined one of the plurality of scenarios. In one embodiment, the engine system stores a plurality of different software modules. The method selects one of the plurality of software modules in accordance with the determined one of the plurality of scenarios. The cylinder air charge and/or cylinder burned gas calculation comprises executing the selected one of the modules. In one embodiment, a memory stores a relationship between volume occupied by residual gas in the at least one cylinders at a predetermined position of the at least one cylinder in the engine during the cycle determined in accordance with each one of the plurality of scenarios for each of a plurality of different intake valve opening and exhaust valve closing conditions. The method includes: determining from the memory the volume occupied by residual gas in the at least one cylinders at a predetermined position of the at least one cylinder in the engine during the cycle for the intake valve opening and exhaust valve closing conditions; and, determining from volume occupied by residual gas in the at least one cylinders at a predetermined position of the at least one cylinder in the engine during the cycle the cylinder air charge and/or cylinder burned gas.
    • 一种用于确定用于内燃机系统的气缸充气和/或气缸燃烧气体的方法。 发动机系统包括气缸,这些气缸中的每一个具有至少一个进气阀和与该气缸连通的至少一个排气阀。 该方法确定多个不同场景中的一个,每个场景表示进气门相对于关闭排气门的打开和关闭之间的几何关系。 气缸充气和/或气缸燃烧气体根据所确定的多种场合中的一种进行计算。 在一个实施例中,发动机系统存储多个不同的软件模块。 该方法根据所确定的多个场景中的一个来选择多个软件模块中的一个。 气缸充气和/或气缸燃烧气体计算包括执行所选择的一个模块。 在一个实施例中,存储器存储在根据多个场景中的每一个所确定的循环期间,在发动机中的至少一个气缸的预定位置处,至少一个气缸中的残余气体占据的体积之间的关系, 多个不同的进气门打开和排气门关闭条件。 该方法包括:在进气门打开和排气门关闭条件的循环期间,从存储器中确定发动机中的至少一个气缸的预定位置处的至少一个气缸中的残余气体占据的体积; 并且在循环期间,在气缸充气和/或气缸燃烧气体的循环期间,确定发动机中的至少一个气缸的预定位置处的至少一个气缸中的残留气体的体积。
    • 7. 发明授权
    • Method and system for estimating cylinder charge for internal combustion engines having variable valve timing
    • US06754575B2
    • 2004-06-22
    • US10289591
    • 2002-11-07
    • Julia Helen BucklandIlya V. KolmanovskyJing SunJoseph Scillieri
    • Julia Helen BucklandIlya V. KolmanovskyJing SunJoseph Scillieri
    • G06G770
    • F02D41/0062F02D41/18F02D2041/001F02D2200/0402Y02T10/47
    • A method for determining cylinder air charge and/or cylinder burned gas for an internal combustion engine system. The engine system includes cylinders, each one of such cylinders having at least one intake valve and at least one exhaust valve in communication with such cylinder. The method determines one of a plurality of different scenarios, each one of the scenarios representing a geometrical relationship between opening and closing of the intake valve relative to closing of the exhaust valve. The cylinder air charge and/or cylinder burned gas is calculated in accordance with the determined one of the plurality of scenarios. In one embodiment, the engine system stores a plurality of different software modules. The method selects one of the plurality of software modules in accordance with the determined one of the plurality of scenarios. The cylinder air charge and/or cylinder burned gas calculation comprises executing the selected one of the modules. In one embodiment, a memory stores a relationship between volume occupied by residual gas in the at least one cylinders at a predetermined position of the at least one cylinder in the engine during the cycle determined in accordance with each one of the plurality of scenarios for each of a plurality of different intake valve opening and exhaust valve closing conditions. The method includes: determining from the memory the volume occupied by residual gas in the at least one cylinders at a predetermined position of the at least one cylinder in the engine during the cycle for the intake valve opening and exhaust valve closing conditions; and, determining from volume occupied by residual gas in the at least one cylinders at a predetermined position of the at least one cylinder in the engine during the cycle the cylinder air charge and/or cylinder burned gas.
    • 8. 发明授权
    • Adaptive torque model for internal combustion engine
    • 内燃机自适应扭矩模型
    • US06553958B1
    • 2003-04-29
    • US09833237
    • 2001-04-11
    • Ilya V KolmanovskyJulia Helen BucklandJing Sun
    • Ilya V KolmanovskyJulia Helen BucklandJing Sun
    • F02B1700
    • F02B17/005F02B23/104F02B2075/125F02D41/0097F02D41/1402F02D2041/1433F02D2200/1004F02D2250/18Y02T10/123
    • A system and method for controlling a multi-cylinder internal combustion engine include determining a first engine operating variable using a model having at least one adjustable model parameter, measuring a second engine operating variable, and modifying the at least one adjustable model parameter based on a relationship between the first and second engine operating variables. In one embodiment, the first engine operating variable represents engine torque while the second engine operating variable is engine speed. An engine torque model and/or load torque model may be used to determine an estimated engine speed or speed trajectory which is compared to the actual engine speed or trajectory determined using an engine speed sensor. One or more model parameters for the engine torque and/or load torque model are adjusted when appropriate operating conditions are met based on a difference between the predicted or estimated engine speeds and the measured engine speeds.
    • 用于控制多气缸内燃机的系统和方法包括使用具有至少一个可调模型参数的模型来确定第一发动机操作变量,测量第二发动机操作变量,以及基于 第一和第二发动机运行变量之间的关系。 在一个实施例中,第一发动机操作变量表示发动机扭矩,而第二发动机操作变量是发动机转速。 发动机转矩模型和/或负载转矩模型可用于确定与使用发动机转速传感器确定的实际发动机转速或轨迹进行比较的估计的发动机转速或速度轨迹。 基于预测或估计的发动机速度与所测量的发动机速度之间的差异来满足适当的操作条件时,调整发动机转矩和/或负载转矩模型的一个或多个模型参数。