公开(公告)号：US3625080A

公开(公告)日：1971-12-07

申请号：US3625080D

申请日：1969-11-24

Applicant: BENDIX CORP

Inventor： RACHEL TODD L ,  VAUGHAN DAVID S ,  RIGGEN THEODORE K

IPC: F16H59/46 ,  F16H61/02 ,  F16H61/16 ,  F16H3/38 ,  B60K17/02 ,  F16H5/42

CPC classification number: F16H61/0248 ,  F16H59/46 ,  F16H61/16 ,  Y10T74/1926 ,  Y10T74/19284 ,  Y10T477/693

Abstract: A CONTROL SYSTEM FOR A MECHANICAL POWER TRANSMISSION TO PROVIDE SYNCHRONIZATION OF GEAR SPEEDS TO THEREBY PERMIT AUTOMATIC GEAR CHANGING IN RESPONSE TO A DESIRED GEAR SELECTION. THE SYSTEM INCLUDES ANTICIPATION CIRCUITRY TO PROVIDE THE CONTROL SYSTEM WITH A SIGNAL INDICATIVE OF SYNCHRONIZATION SUFFICIENTLY IN ADVANCE OF ACTUAL SYNCHRONIZATION TO COMPENSATE FOR RESPONSE TIME DELAYS IN THE REMAINDER OF THE SYSTEM AND IN THE SHIFTING MECHANISM. FURTHER CIRCUITRY IS PROVIDED TO INHIBIT THE SYSTEM IF THE DESIRED GEAR CHANGE WOULD NOT BE COMPATIBLE WITH BEST OPERATION OF THE ASSOCIATED PRIME MOVER. THE SHIFT INHIBIT CIRCUITRY IS PROVIDED WITH MEANS FOR RECOGNIZING THE ERROR IN GEAR SELECTION AND WITH MEANS FOR CORRECTING THE ERROR BY ATTEMPTING TO SELECT A PROPER GEAR SETTING. A SHIFT LEVER MECHANISM OPERATIVE TO BE SELF-DISABLING IN THE EVENT OF A DOWN SHIFT TO A PROHIBITED POSITION AND FURTHER OPERATIVE TO SEEK THE NEAREST PERMITTED POSITION IS ALSO SHOWN.

THE LEVER MECHANISM INCLUDES BIASING MEANS OPERATIVE TO BIAS THE GEAR INDICATING LEVER TOWARD THE HIGHEST GEAR SETTINGS AND LATCHING MEANS OPERATIVE TO BE ENERGIZED AT GEAR SETTINGS LOWER THAN THE LOWEST PERMITTED SETTING TO PREVENT THE LEVER MECHANISM, AND HENCE, THE ASSOCIATED SYSTEM INPUT MEANS, FROM COMMANDING A PROHIBITED DOWN SHIFT.