-
公开(公告)号：US08621849B2
公开(公告)日：2014-01-07
申请号：US13321595
申请日：2010-03-27
CPC分类号： F02D41/025 , F01N3/103 , F01N11/002 , F01N2550/02 , F01N2560/06 , F01N2560/07 , F01N2900/1631 , F02D41/0235 , F02D41/029 , F02D41/1445 , F02D41/1446 , F02D41/1447 , F02D41/405 , F02D2200/0614 , Y02T10/26 , Y02T10/44 , Y02T10/47
摘要： A method and a control system are provided for diagnosing a diesel combustion catalyst that is located in an exhaust line within a diesel engine system. The method comprising providing an unburned fuel mass flow through the diesel oxidation catalyst, determining the oxidation heat release rate which is related to the exothermic oxidation reactions of the unburned fuel into the diesel oxidation catalyst, integrating the determined oxidation heat release rate on a time interval, integrating the unburned fuel mass flow on the same time interval, dividing the integrated value of oxidation heat release rate and the integrated value of unburned fuel mass flow for determining an efficiency index (DOI) of the diesel oxidation catalyst.
摘要翻译： 提供了一种用于诊断位于柴油发动机系统内的排气管线中的柴油燃烧催化剂的方法和控制系统。 该方法包括提供通过柴油机氧化催化剂的未燃烧燃料质量流量，确定与未燃烧燃料进入柴油机氧化催化剂的放热氧化反应相关的氧化热释放速率，将确定的氧化放热速率与时间间隔 在相同的时间间隔内整合未燃燃料质量流量，除以氧化放热速度的积分值和未燃烧燃料质量流量的积分值，以确定柴油机氧化催化剂的效率指数（DOI）。
-
公开(公告)号：US20120060478A1
公开(公告)日：2012-03-15
申请号：US13321595
申请日：2010-03-27
CPC分类号： F02D41/025 , F01N3/103 , F01N11/002 , F01N2550/02 , F01N2560/06 , F01N2560/07 , F01N2900/1631 , F02D41/0235 , F02D41/029 , F02D41/1445 , F02D41/1446 , F02D41/1447 , F02D41/405 , F02D2200/0614 , Y02T10/26 , Y02T10/44 , Y02T10/47
摘要： A method and a control system are provided for diagnosing a diesel combustion catalyst that is located in an exhaust line within a diesel engine system. The method comprising providing an unburned fuel mass flow through the diesel oxidation catalyst, determining the oxidation heat release rate which is related to the exothermic oxidation reactions of the unburned fuel into the diesel oxidation catalyst, integrating the determined oxidation heat release rate on a time interval, integrating the unburned fuel mass flow on the same time interval, dividing the integrated value of oxidation heat release rate and the integrated value of unburned fuel mass flow for determining an efficiency index (DOI) of the diesel oxidation catalyst.
摘要翻译： 提供了一种用于诊断位于柴油发动机系统内的排气管线中的柴油燃烧催化剂的方法和控制系统。 该方法包括提供通过柴油机氧化催化剂的未燃烧燃料质量流量，确定与未燃烧燃料进入柴油机氧化催化剂的放热氧化反应相关的氧化热释放速率，将确定的氧化放热速率与时间间隔 在相同的时间间隔内整合未燃燃料质量流量，除以氧化放热速度的积分值和未燃烧燃料质量流量的积分值，以确定柴油机氧化催化剂的效率指数（DOI）。
-
3.发明申请公开(公告)号：US20120053912A1
公开(公告)日：2012-03-01
申请号：US13202844
申请日：2010-02-22
IPC分类号： G06F17/10
CPC分类号： F01N11/002 , F01N9/005 , F01N2550/02 , F01N2900/14 , F01N2900/1602 , F01N2900/1631 , Y02T10/47
摘要： A method is provided for estimating the heat exchange rate related to the exothermic oxidation reactions of a catalytic converter in an internal combustion engine. Exhaust gases flow through the catalytic converter, the method includes, but is not limited to providing a thermal model of a catalytic converter where no oxidation reactions take place. The thermal model includes, but is not limited to equations that take into account the heat exchange rate related to the processes between the exhaust gases, the catalytic converter and an external environment surrounding the catalytic converter, calculating an estimated outlet temperature at the outlet of the catalytic converter, based on the thermal model, measuring an outlet temperature at the outlet of the catalytic converter comparing the estimated outlet temperature with the measured outlet temperature, thus obtaining a correction factor, correcting the thermal model by using the correction factor in order to make the estimated outlet temperature converge to the measured outlet temperature, estimating the heat exchange rate related to the exothermic oxidation reactions as the correction factor.
摘要翻译： 提供了一种用于估计与内燃机中的催化转化器的放热氧化反应有关的热交换率的方法。 废气流过催化转化器，该方法包括但不限于提供不发生氧化反应的催化转化器的热模型。 热模型包括但不限于考虑与废气，催化转化器和催化转化器周围的外部环境之间的过程相关的热交换率的方程式，计算出口处的出口温度 催化转化器，基于热模型，测量催化转化器出口处的出口温度，将估计的出口温度与测量出口温度进行比较，从而获得校正因子，通过使用校正因子校正热模型，以使 估计出口温度收敛于测量的出口温度，估计与放热氧化反应相关的热交换率作为校正因子。
-
4.发明授权Method and system for controlling operating pressure in a common-rail fuel injection system, particularly for a diesel engine 有权用于控制共轨燃料喷射系统中的操作压力的方法和系统，特别是用于柴油发动机公开(公告)号：US07891342B2
公开(公告)日：2011-02-22
申请号：US12470315
申请日：2009-05-21
申请人： Maura Dintino , Roberto Vernassa , Paolo Zamboni
发明人： Maura Dintino , Roberto Vernassa , Paolo Zamboni
CPC分类号： F02D41/405 , F02D41/3863 , F02D41/3872 , F02D2200/0602 , F02D2250/31 , F02M63/0225 , F02M63/0235 , Y02T10/44
摘要： In a fuel injection system of an internal combustion engine that includes, but is not limited to injectors (I1-I4), each of which is adapted to deliver a predetermined amount of pressurized fuel to a combustion chamber of a respective cylinder (C1-C4) of the engine, a high-pressure accumulator volume common to the injectors (I1-I4) and arranged to maintain the fuel at high-pressure, a pressure sensor for measuring fuel pressure in the accumulator volume, a metering unit for adjusting the fuel pressure in the accumulator volume as a function of the measured pressure, so as to maintain a predetermined target injection pressure set-point dependent on the engine operating point by returning excess fuel to a fuel tank; and an electronic control unit arranged for controlling fuel injection timing and quantity by operating injectors control valves, the operating pressure is controlled by triggering retarded injections (INJpost) of a predetermined quantity of fuel to the combustion chamber of the cylinders (C1-C4) of the engine during a respective exhaust stroke, when pressure above a predetermined threshold (THover) is detected in the accumulator volume, so as to discharge fuel from the accumulator volume without it taking part to the combustion process, thereby reducing pressure in the accumulator volume.
摘要翻译： 在内燃机的燃料喷射系统中，其包括但不限于喷射器（I1-I4），每个喷射器适于将预定量的加压燃料输送到相应汽缸（C1-C4）的燃烧室 ），喷射器（I1-I4）共同并被布置成将燃料保持在高压下的高压蓄能器容积，用于测量蓄能器容积中的燃料压力的压力传感器，用于调节燃料的计量单元 作为测量压力的函数的蓄能器体积中的压力，以便通过将多余的燃料返回到燃料箱来维持取决于发动机工作点的预定目标喷射压力设定点; 以及电子控制单元，其布置成通过操作喷射器控制阀来控制燃料喷射正时和数量，通过将预定量的燃料的延迟喷射（INJpost）触发到气缸（C1-C4）的燃烧室 当在蓄能器体积中检测到高于预定阈值（止点）的压力时，在相应的排气行程期间，发动机，以便在没有参与燃烧过程的情况下从蓄能器容积排出燃料，从而减小蓄能器容积中的压力。
-
-
-
搜索结果
4 条记录 (耗时 0.014 秒)
