Method of detecting false neutral in a transmission system,申请号GB20020013937-传众专利搜索

Method of detecting false neutral in a transmission system

申请公布号：GB2389878(A)

申请号：GB20020013937

申请日期：2002.06.18

申请公布日期：2003.12.24

申请人：

* EATON CORPORATION

发明人：JEFFREY PHILIP * HAWARDEN;ANTHONY * STASIK;ROBERT STANLEY * WHEELER;KWOK WAH * CHAN

分类号：F16H61/02;F16H59/68;F16H61/12;F16H61/682;(IPC1-7):F16H61/12;F16H61/16;F16H61/04

主分类号：F16H61/02

摘要：An automated mechanical transmission control method includes monitoring engine acceleration when downshifting from a current gear and comparing this with an engine free acceleration to detect a false neutral condition and to take appropriate action such as retaining the currently engaged gear. When the false neutral condition is not detected the method continues with downshifting to a target gear ratio. The free engine acceleration is a predefined value that depends on an engine manufacturer and may be learned value once an initial value has been set. In another embodiment a rotational speeds of an input and output shaft can be compared to determine whether they remain within a predetermined value from the currently engaged gear ratio and if not a false neutral condition is detected.