公开(公告)号：US20110282598A1

公开(公告)日：2011-11-17

申请号：US13106055

申请日：2011-05-12

申请人： Michael UNGERMANN ,  Andreas Buse ,  Dieter Schwarzmann

发明人： Michael UNGERMANN ,  Andreas Buse ,  Dieter Schwarzmann

IPC分类号： G01M15/04 ,  G06F19/00

CPC分类号： F02D41/18 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/22 ,  F02D2200/0402 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/101 ,  Y02T10/42

摘要： A method for detecting a leak in an intake tract of an internal combustion engine including the following steps: operating the internal combustion engine at a first operating point having a rotational speed and a first pressure difference between the ambient pressure and the pressure in the intake tract of the internal combustion engine; computing a first expected mass flow into the intake tract; measuring a first mass flow into the intake tract and computing a difference between the measured first mass flow and the first expected mass flow; operating the internal combustion engine at a second operating point having the same rotational speed and a second pressure difference between the ambient pressure and the pressure in the intake tract of the internal combustion engine, the second pressure difference being different from the first pressure difference; computing a second expected mass flow into the intake tract; measuring a second mass flow into the intake tract and computing the difference between the measured second mass flow and the second expected mass flow; and comparing the mass flow differences ascertained at the first and at the second operating point.

摘要翻译： 一种用于检测内燃机的进气道中的泄漏的方法，包括以下步骤：在具有旋转速度和环境压力与进气道中的压力之间的第一压力差的第一操作点处操作内燃机 的内燃机; 计算进入道中的第一预期质量流量; 测量进入进气道的第一质量流量并计算所测量的第一质量流量与第一预期质量流量之间的差值; 在具有相同旋转速度的第二操作点和环境压力与内燃机的进气道中的压力之间的第二压力差的第二操作点操作内燃机，第二压力差与第一压力差不同; 计算进入道中的第二预期质量流量; 测量进入进气道的第二质量流，并计算所测量的第二质量流和第二预期质量流之间的差; 并比较在第一和第二操作点确定的质量流量差。

公开(公告)号：US08731850B2

公开(公告)日：2014-05-20

申请号：US13106055

申请日：2011-05-12

申请人： Michael Ungermann ,  Andreas Buse ,  Dieter Schwarzmann

发明人： Michael Ungermann ,  Andreas Buse ,  Dieter Schwarzmann

IPC分类号： G01F17/00

CPC分类号： F02D41/18 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/22 ,  F02D2200/0402 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/101 ,  Y02T10/42

摘要： A method for detecting a leak in an intake tract of an internal combustion engine involves operating the engine at two operating points and comparing a deviation of measured mass flows from expected mass flows at the first and at the second operating points.

摘要翻译： 用于检测内燃机的进气道中的泄漏的方法包括在两个操作点操作发动机，并将测量的质量流量与第一和第二操作点处的预期质量流量的偏差进行比较。

公开(公告)号：US20140188433A1

公开(公告)日：2014-07-03

申请号：US14122791

申请日：2012-05-08

申请人： Christian Erath ,  Mirko Wagner ,  Andreas Buse ,  Martin Fritz

发明人： Christian Erath ,  Mirko Wagner ,  Andreas Buse ,  Martin Fritz

IPC分类号： G01M17/00 ,  G01M99/00

CPC分类号： G01M17/00 ,  G01M99/00 ,  G06Q10/06315

摘要： A diagnostic system and a diagnostic method for a technical system are described with which, on the basis of the expert knowledge already necessary for the manual establishment of troubleshooting trees, the establishment of troubleshooting trees can be automated and the performance of guided troubleshooting can be assisted. Provided for this purpose are an acquisition module for systematic acquisition of all relevant status, observation, and/or measured data of the technical system, and a prioritization module for prioritizing all relevant tests, checks, or measurements, in order, in accordance with the weightings of the tests, checks, or measurements as a function of the status, observation, and/or measured data, to establish automatically a troubleshooting tree that can serve as a basis for guided troubleshooting.

摘要翻译： 描述了技术系统的诊断系统和诊断方法，其中基于已经为手动建立故障排除树所必需的专家知识，可以自动化建立故障排除树，并且可以辅助指导故障排除的性能 。 为此目的提供了一种用于系统地获取技术系统的所有相关状态，观察和/或测量数据的采集模块，以及用于按照所述方法对所有相关测试，检查或测量进行优先排序的优先级模块 作为状态，观察和/或测量数据的函数的测试，检查或测量的权重，以自动建立可作为指导故障排除的基础的故障排除树。