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    • 3. 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。
    • 6. 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
    • Combustion mode control for a direct injection spark ignition (DISI) internal combustion engine
    • US06705276B1
    • 2004-03-16
    • US10278473
    • 2002-10-24
    • Jing SunIlya V. Kolmanovsky
    • Jing SunIlya V. Kolmanovsky
    • F02B1700
    • F02D41/3076F02B17/005F02B23/104F02B2075/125F02D41/0072F02D41/3029F02D41/3064F02D2250/18F02D2250/26
    • A method and system for controlling internal combustion engine, such engine being adapted to operate in a selected one of a plurality of operating mode. One of such modes is characterized by stratified combustion and another one of such modes is characterized by a homogeneous combustion. The method and system includes determining from operating conditions of the engine and a demanded torque, a preferred one of the operating modes. Determining from such demanded torque whether operation such preferred operating mode is feasible. The method and system effects a transition of the engine to the preferred mode if such preferred mode is determined to be feasible; otherwise, such engine is operated in one of the modes which provides the minimum difference between the torque produced in such one of the modes and the demanded torque. The feasibility determining comprises determining maximum torque, &tgr;max,s, producible by such engine in the stratified operating mode and determining minimum torque, &tgr;min,h, producible by such engine in the homogeneous operating mode. The stratified mode is determined feasible if the demanded torque is less than the determined maximum torque, &tgr;max,s, and the homogeneous mode is determined feasible if the demanded torque is greater than or equal to the determined minimum torque, &tgr;min,h. Maximum torque, &tgr;max,s, is determined as a function of engine operating speed, air charge and burned gas fraction in a cylinder of such engine and a lower limit of the air fuel ratio for stratified operation of such engine. Minimum torque, &tgr;min,h, is determined as a function of engine operating speed, air charge in a cylinder of such engine, an upper limit of the air fuel ratio for homogeneous operation of such engine, burned gas fraction in the cylinder, and maximum delayed ignition timing from Maximum Brake Torque spark timing Spark timing is changed to meet demanded torque when operating in the homogeneous mode, and changing fuel flow to such cylinder when operating in the stratified mode.