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1.发明公开SYSTÈME ET PROCÉDÉ D'ESTIMATION DU DÉBIT D'OXYDES D'AZOTES DANS LES GAZ D'ÉCHAPPEMENT D'UN MOTEUR À COMBUSTION INTERNE POUR VÉHICULE AUTOMOBILE 审中-公开SYSTEM AND METHOD FOR估算氮氧化物的河中的排气的内燃机的用于机动车辆
公开(公告)号：EP3060784A1
公开(公告)日：2016-08-31
申请号：EP14786852.5
申请日：2014-10-16
申请人： Renault S.A.S.
CPC分类号： F02D41/1462 , F02D41/0047 , F02D2041/1433 , F02D2200/0402 , Y02T10/47
摘要： The invention relates to a system for estimating the flow of nitrogen oxides in the exhaust gases of an internal combustion engine for a motor vehicle provided with at least one circuit for partially recirculating the exhaust gases and with at least one system for reprocessing the exhaust gases, the flow of nitrogen oxides being estimated upstream of the systems for reprocessing the exhaust gases, including a system for determining the mass fraction of the fresh gases, a subtractor being suitable for determining the fraction of combusted gases in the intake collector from the mass fraction of the fresh gases, and an estimator (1) of the flow of nitrogen oxides depending on the speed of rotation of the internal combustion engine and on the fraction of combusted gases in the intake collector.
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2.发明公开
公开(公告)号：EP2815114A1
公开(公告)日：2014-12-24
申请号：EP13703074.8
申请日：2013-02-08
申请人： Renault S.A.S.
CPC分类号： F02D41/145 , F02B37/12 , F02B37/24 , F02D41/0007 , Y02T10/144
摘要： The invention relates to a method for estimating the ratio between the upstream pressure and the downstream pressure in the turbine of a turbocharger for a motor vehicle, including the following steps: obtaining the estimation of the mass flow of the turbine, of the rotational speed of the turbine, and of the upstream temperature of the turbine, as well as the measurement of the position of the variable-geometry turbine blades and of the downstream pressure of the turbine; determining the value of a first internal variable on the basis of physical measurements of the turbine and the initialization value of the estimator; determining the value of a second internal variable on the basis of physical measurements of the turbine, the initialization value of the estimator, and a variation in the pressure ratio; determining the derivative of the internal variables on the basis of the values of the internal variables; and obtaining the estimated value of the pressure ratio on the basis of the derivative of the internal variables.
摘要翻译： 本发明涉及一种用于估计所述上游压力和在涡轮增压器的涡轮机的用于机动车辆的下游压力，其包括以下步骤之间的比率：的旋转速度的获取涡轮机的质量流量的估计， 涡轮机，并且所述涡轮机的上游温度，以及可变几何涡轮机叶片的位置和测量的涡轮机的压力的下游; 确定性采矿所述涡轮和所述估计的初始值的物理测量的基础上的第一内部变量的值; 确定性挖掘涡轮机，所述估计器的初始化值，并在压力比的变化的物理测量的基础上，第二内部变量的值; 确定性采矿内部变量的值的基础上的内部变量的导数; 获得与推定值的内部变量的导数的基础上的压力比。
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3.发明授权SYSTÈME ET PROCÉDÉ D'ESTIMATION DU RAPPORT ENTRE LA PRESSION EN AMONT ET LA PRESSION EN AVAL DE LA TURBINE D'UN MOTEUR SURALIMENTÉ D'UN VÉHICULE AUTOMOBILE 有权SYSTÈMEETPROCÉDÉD'ESTIMATION DU RAPPORT ENTRE LA PRESSION EN AMONT ET LA PRESSION EN AVAL DE LA TURBINE D'UN MOTEURSURALIMENTÉD'UNVÉHICULEAUTOMOBILE
公开(公告)号：EP2815114B1
公开(公告)日：2017-09-27
申请号：EP13703074.8
申请日：2013-02-08
申请人： Renault S.A.S.
CPC分类号： F02D41/145 , F02B37/12 , F02B37/24 , F02D41/0007 , Y02T10/144
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公开(公告)号：EP3384145A1
公开(公告)日：2018-10-10
申请号：EP16813014.4
申请日：2016-11-24
申请人： Renault S.A.S.
发明人： TALON, Vincent , CASTILLO, Felipe
CPC分类号： F02D35/023 , F02D35/026 , F02D41/0002 , F02D41/009 , F02D2041/1433 , F02D2200/021 , F02D2250/36 , Y02T10/42
摘要： Method of estimating the mass enclosed in the combustion chamber of a cylinder of a motor vehicle internal combustion engine, equipped with a means of measuring the pressure in the cylinder, with a means of measuring the angle of the crankshaft with respect to a reference position and of measuring the temperature of the combustion chamber cooling liquid. The method comprising steps during which the rotational speed of the engine is determined from the measurement of the crankshaft angle and the engine load is determined. The method also comprises the following steps: when the valves of the cylinder are completely closed and before fuel is first injected, the volume of the cylinder is determined as a function of the angle of the crankshaft, calibration parameters connected with the heat losses at the walls are determined from a map dependent on engine rotational speed, the temperature modelled in the cylinder is determined using a non-linear dimensionless model of the pressure and the temperature in the combustion chamber as a function of the measured pressure in the cylinder, of the specific gas constant for the gases in the cylinder, of the specific heat capacity at constant volume of the gases in the cylinder, of the volume of the combustion chamber, and of calibration parameters connected with the heat losses at the walls, and the mass enclosed in the cylinder is determined.
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