Function monitoring method for motor vehicle transmission

• Main Authors: HIRT, GUNTER, 77839 LICHTENAU, DE, KOSIK, FRANZ, 73760 OSTFILDERN, DE, GRASS, THOMAS, 73660 URBACH, DE, FISCHER, ROBERT., 77815 BUEHL, DE, KUEPPER, KLAUS., 77815 BUEHL, DE, HERRMANN, THORSTEN, 77815 BUEHL, DE
• Format: Patent
• Language: English; German
• Published: 29.01.1998
• Edition: 6
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The method is for monitoring the functions of the vehicle transmission (311) coupled to an engine (300) via a clutch (302), the transmission having at least one position variable gearbox element (314) whose position change causes a change in the gearbox ratio. The method involves detection of an output signal of a sensor (320), which in dependence on this changes at least one gearbox element, through the computer unit (350) in a first starting position. The position data value derived from this output signal for the first position, is stored in a memory. An operating element connected to this position variable gearbox element is operated in order to bring the gearbox element as close as possible to at least a predetermined target position. The method also involves deduction of the output signal of the sensor in a changed position through the computer and determination of a position data value representative of the position, the data value being stored in the memory. The position data value is assessed according to a predetermined assessment criterion through the computer unit. This process or some of the individual steps is/are repeated until a predetermined assessment criterion is reached, to check whether the position-variable gearbox element is located in a predefined target position.