Control system and method for sensing and indicating neutral in a semi-automatic mechanical transmission system.

摘要

A control system (104) for semi-automatically executing manually and/or automatically selected upshifts and downshifts of a mechanical transmission system (10) is provided. The control system includes a central processing unit (106) for receiving input signals indicative of transmission input shaft (16) and output shaft (90) speeds and from a driver control console (108) indicative of manual selection of upshifts or downshifts from a currently engaged gear ratio or into neutral and processing the same in accordance with predetermined logic rule to issue command output signals to a transmission actuator (112, 70, 96) to implement the selected shifts upon a manual caused torque reversal of the transmission and manual substantial synchronization of the transmission thereafter. The control also senses and indicates (i) a selected but not yet confirmed shift into neutral and (ii) a confirmed neutral condition.