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

IPC分类号： F02M59/36 ,  F02B3/00

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。

公开(公告)号：US08239118B2

公开(公告)日：2012-08-07

申请号：US12471960

申请日：2009-05-26

申请人： Maura Dintino ,  Paolo Zamboni

发明人： Maura Dintino ,  Paolo Zamboni

IPC分类号： F02D41/30 ,  F02M57/02

CPC分类号： F02D41/3845 ,  F02D41/2441 ,  F02D41/2464 ,  F02D2250/31 ,  F02M59/366 ,  F02M63/023

摘要： In a fuel injection system of an internal combustion engine, including, but not limited to a high pressure pump adapted to deliver a fuel mass conveyed from a fuel tank to a high pressure region to which a plurality of injectors is connected, including a fuel metering device for adjusting the fuel quantity to be delivered to the high pressure region, a pressure sensor for measuring fuel pressure in the high pressure region; and an electronic control unit arranged for driving the fuel metering device through an energizing signal (Inom; Iact) as a function of the measured fuel pressure and the engine operating mode, where the electronic control unit is arranged for determining the energizing signal (Inom; Iact) for driving the fuel metering device according to a nominal characteristic curve (A) of the high pressure pump representative of a predetermined relationship between the energizing signal and the fuel mass delivered by the pump, the operating pressure is controlled by driving the fuel metering device with an energizing signal determined according to an updated characteristic curve (B) estimated by applying to the nominal characteristic curve (A) an offset between the actual energizing signal value (Iact) related to the controlled fuel mass delivered to the high pressure region in a predetermined engine operating point and a nominal energizing signal (Inom) related to the controlled fuel mass according to the nominal characteristic curve (A).

摘要翻译： 在内燃机的燃料喷射系统中，包括但不限于适于将从燃料箱输送的燃油质量输送到连接有多个喷射器的高压区域的高压泵，包括燃料计量 用于调节要输送到高压区域的燃料量的装置，用于测量高压区域中的燃料压力的压力传感器; 以及电子控制单元，其布置成通过作为所测量的燃料压力和发动机操作模式的函数的激励信号（Inom; Iact）来驱动燃料计量装置，其中电子控制单元被布置用于确定激励信号（Inom; Iact），用于根据代表由泵输送的燃料质量之间的预定关系的高压泵的标称特性曲线（A）驱动燃料计量装置，通过驱动燃料计量来控制操作压力 装置，其具有根据通过施加到所述标称特性曲线（A）估计的经更新的特性曲线（B）确定的激励信号，所述特性曲线（B）与传递到所述高压区域的受控燃料质量相关的实际通电信号值（Iact） 预定的发动机工作点和与受控燃料质量相关的额定通电信号（Inom） g到标称特性曲线（A）。

公开(公告)号：US08433498B2

公开(公告)日：2013-04-30

申请号：US12876955

申请日：2010-09-07

申请人： Maura Dintino ,  Vincenzo Rampino ,  Eugenio Pisoni

发明人： Maura Dintino ,  Vincenzo Rampino ,  Eugenio Pisoni

IPC分类号： F02D41/08

CPC分类号： F02D41/3872 ,  F02D2041/142

摘要： Methods, a fuel supply system, and a computer readable medium embodying a computer program product are provided for controlling rail pressure in a fuel supply system comprising a fuel pump, an injector and a rail connecting the injector to the pump. At least one of the methods includes, but is not limited to establishing a relationship between said rail pressure and a leak rate of the injector, estimating a fuel drain rate from said rail based on a fuel injection rate, the rail pressure and said rail pressure/leak rate relationship, estimating a desired intake flow rate of said pump based on said fuel drain rate, and controlling the pump to operate at said desired intake flow rate.

摘要翻译： 方法，燃料供应系统和体现计算机程序产品的计算机可读介质被提供用于控制燃料供应系统中的轨道压力，所述燃料供应系统包括将喷射器连接到泵的燃料泵，喷射器和轨道。 所述方法中的至少一个包括但不限于建立所述轨道压力和喷射器的泄漏率之间的关系，基于燃料喷射速率，轨道压力和所述轨道压力来估计来自所述轨道的燃料排出速率 /泄漏率关系，基于所述燃料排出速率估计所述泵的期望进气流量，并且控制所述泵以所述期望的进气流量运行。

公开(公告)号：US09261036B2

公开(公告)日：2016-02-16

申请号：US13429790

申请日：2012-03-26

申请人： Stefano Nieddu ,  Maura Dintino

发明人： Stefano Nieddu ,  Maura Dintino

IPC分类号： G01R23/00 ,  F02D41/14 ,  F02D41/38 ,  G06F11/30

CPC分类号： F02D41/1401 ,  F02D41/3845 ,  F02D2041/1409 ,  F02D2041/141 ,  F02D2041/1432 ,  F02D2200/0602 ,  F02D2200/101 ,  F02D2200/503 ,  F02D2250/31

摘要： A method to minimize common rail pressure irregularities due to aliasing effect on battery voltage monitoring in a digital electronic control unit that is capable of PWM (Pulse Width Modulation) regulations of a metering valve unit in a diesel common-rail power-train system. At least an engine rotary speed signal is detected and at least a battery voltage signal is monitored, the method includes, but is not limited to calculating the aliasing frequency on said battery voltage signal as a function of said engine rotary speed signal, filtering the battery voltage signal before it is input to said controller module with at least one digital non-linear notch filter, the at least one digital non-linear notch filter centered about the first harmonic of the aliasing frequency, and input the filtered battery voltage signal, at least with the engine rotary speed signal, to the controller module for PWM regulating the metering valve unit.

摘要翻译： 一种能够在能够在柴油共轨动力传动系统中计量阀单元的PWM（脉宽调制））规定的数字电子控制单元中对电池电压监视产生混叠效应的共轨压力不均匀性的方法。 至少检测到发动机转速信号，至少监视电池电压信号，该方法包括但不限于根据所述发动机转速信号计算所述电池电压信号上的混叠频率，对电池进行过滤 电压信号在其被至少一个数字非线性陷波滤波器输入到所述控制器模块之前，所述至少一个数字非线性陷波滤波器以混叠频率的第一谐波为中心，并且将滤波的电池电压信号输入到 至少与发动机转速信号，控制器模块用于PWM调节计量阀单元。