公开(公告)号：US07810386B2

公开(公告)日：2010-10-12

申请号：US12215468

申请日：2008-06-27

申请人： Michael Kraemer ,  Stefan Denys

发明人： Michael Kraemer ,  Stefan Denys

IPC分类号： G01M15/09

CPC分类号： F02D41/222 ,  F02D41/3836 ,  F02D2041/223 ,  F02D2041/288

摘要： A method for checking the output signal of a rail pressure sensor of a direct-injecting internal combustion engine having a common rail system for plausibility, including the following steps: the output signal of the rail pressure sensor is detected over a predefinable period of time and recorded; the output signal is transformed into the frequency space; characteristic features are extracted from the transformed signal; a rail pressure value is calculated on the basis of the features and additional, predefined influencing variables; an average rail pressure value is simultaneously ascertained from the output signal of the rail pressure sensor; the average rail pressure value is compared with the calculated rail pressure value; in the event that the calculated rail pressure value deviates from the average rail pressure value by a predefined limiting value, an error signal is output and/or stored in an error memory.

摘要翻译： 一种用于检查具有共轨系统的直喷式内燃机的轨道式压力传感器的输出信号的方法，包括以下步骤：在预定的时间段内检测轨道压力传感器的输出信号， 记录; 输出信号被转换成频率空间; 从变换信号中提取特征特征; 基于特征和附加的预定义影响因子计算轨道压力值; 从轨道压力传感器的输出信号同时确定平均轨道压力值; 将平均轨道压力值与计算的轨道压力值进行比较; 在计算的轨道压力值偏离平均轨道压力值预定的限制值的情况下，将错误信号输出和/或存储在错误存储器中。

公开(公告)号：US20090007647A1

公开(公告)日：2009-01-08

申请号：US12215468

申请日：2008-06-27

申请人： Michael Kraemer ,  Stefan Denys

发明人： Michael Kraemer ,  Stefan Denys

IPC分类号： G01M15/09

CPC分类号： F02D41/222 ,  F02D41/3836 ,  F02D2041/223 ,  F02D2041/288

摘要： A method for checking the output signal of a rail pressure sensor of a direct-injecting internal combustion engine having a common rail system for plausibility, including the following steps: the output signal of the rail pressure sensor is detected over a predefinable period of time and recorded; the output signal is transformed into the frequency space; characteristic features are extracted from the transformed signal; a rail pressure value is calculated on the basis of the features and additional, predefined influencing variables; an average rail pressure value is simultaneously ascertained from the output signal of the rail pressure sensor; the average rail pressure value is compared with the calculated rail pressure value; in the event that the calculated rail pressure value deviates from the average rail pressure value by a predefined limiting value, an error signal is output and/or stored in an error memory.

摘要翻译： 一种用于检查具有共轨系统的直喷式内燃机的轨道式压力传感器的输出信号的方法，包括以下步骤：在预定的时间段内检测轨道压力传感器的输出信号， 记录; 输出信号被转换成频率空间; 从变换信号中提取特征特征; 基于特征和附加的预定义影响因子计算轨道压力值; 从轨道压力传感器的输出信号同时确定平均轨道压力值; 将平均轨道压力值与计算的轨道压力值进行比较; 在计算的轨道压力值偏离平均轨道压力值预定的限制值的情况下，将错误信号输出和/或存储在错误存储器中。