Ensuring gear engagement in an automatically-controlled gearbox

• Main Authors: JOCHEN STINUS, MICHAEL SALECKER, MARTIN ZIMMERMANN
• Format: Patent
• Language: English
• Published: 17.09.1997
• Edition: 6
• Subjects: BLASTING; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

In a transmission having an automated gear shift, with an actuator 9 for gear selection and an actuator 8 for control of a clutch 2, the failure of a ratio to engage properly, e.g. because of colliding gear tooth fronts of transmission internal gear shift elements, is detected by sensor signals. The control unit then initiates the control of the actuator so that the gear shift is temporarily and at least partially cancelled, and is continued thereafter. The clutch 2 may also be momentarily, partially, reengaged to overcome the blockage.