Invention Application
- Patent Title: METHOD FOR DETERMINING CHARACTERISTICS OF AN AUTOMATIC TRANSMISSION
- Patent Title (中): 用于确定自动变速器特性的方法
-
Application No.: US13440169Application Date: 2012-04-05
-
Publication No.: US20120273318A1Publication Date: 2012-11-01
- Inventor: Thilo SCHMIDT , Valentine HERBETH , Klaus STEINHAUSER , Jörg ARNOLD
- Applicant: Thilo SCHMIDT , Valentine HERBETH , Klaus STEINHAUSER , Jörg ARNOLD
- Applicant Address: DE Friedrichshafen
- Assignee: ZF FRIEDRICHSHAFEN AG
- Current Assignee: ZF FRIEDRICHSHAFEN AG
- Current Assignee Address: DE Friedrichshafen
- Priority: DE102011017515.6 20110426
- Main IPC: B60W10/02
- IPC: B60W10/02 ; B60W10/10
Abstract:
A method of determining a fill current value of at least one frictionally engaging shift element of an automatic transmission. The automatic transmission includes a hydrodynamic converter at which a speed ratio arises and an output shaft. In a control sequence, with a stationary output shaft, the speed ratio is influenced by changing a control current, and the fill current value is determined from the progression of the speed ratio arising during the control sequence, in conjunction with the progression of the control current.
Public/Granted literature
- US09002598B2 Method for determining characteristics of an automatic transmission Public/Granted day:2015-04-07
Information query
