Transmission having an electro-mechanical gear actuation system

A dual clutch transmission for a motor vehicle having an electro-mechanical gear actuation system for gear selection and gear engagement and disengagement, said transmission including:

• a pair input shafts;
• a counter shaft;
• a plurality of gear sets rotatively disposed on said input shafts and said counter shaft, said gear sets adapted to be operatively engaged to and disengaged from the associated shafts;
• a plurality of synchronizers disposed between said gear sets, said synchronizers adapted to operatively engage and disengage said gear sets to and from the associated shafts;
• a plurality of shifter rails slidingly disposed within said transmission, each said shifter rail having at least one shift fork, each said shift fork in operative engagement with at least one of said synchronizers, said shifter rails adapted to slidingly move and selectively cause the associated said shift fork to move the associated synchronizer;
• a motor assembly supported within said transmission adjacent to said plurality of shifter rails adapted to provide a first motive force to cause one of said plurality of shifter rails to be selectively engaged by said motor assembly, said motor assembly further adapted to provide a second motive force to operatively drive said engaged shifter rail to cause its respective said shift fork and said synchronizer to engage and disengage its respective said gear set;
• and
• a solenoid assembly adapted to selectively control said gear actuation system so as to control when said motor assembly provides said first motive force and when said motor assembly provides said second motive force.

An automated manual transmission for a motor vehicle having an electro-mechanical gear actuation system for gear selection and gear engagement and disengagement, said transmission including:

• an input shaft;
• a counter shaft;
• an output shaft;
• a plurality of gear sets rotatively disposed on said input shaft, said counter shaft, and said output shaft, said gear sets adapted to be operatively engaged to and disengaged from the associated shafts;
• a plurality of synchronizers disposed between said gear sets, said synchronizers adapted to operatively engage and disengage said gear sets to and from the associated shafts;
• a shifter rail slidingly disposed within said transmission, said shifter rail including a plurality of shift forks, each said shift fork in operative engagement with at least one of said plurality of synchronizers, said shifter rail adapted to rotate and engage one of said plurality of shift forks to said shifter rail, said shifter rail further adapted to slidingly move to cause the associated engaged shift fork to move its respective said synchronizer;
• a motor assembly disposed upon said transmission adjacent to said shifter rail adapted to provide a first motive force to cause said shifter rail to selectively engage one of said plurality of shift forks, said motor assembly further adapted to provide a second motive force to operatively drive said shifter rail to cause the associated engaged shift fork and synchronizer to engage and disengage the associated gear set;
• and
• a solenoid assembly adapted to selectively control said gear actuation system so as to control when said motor assembly provides said first motive force and when said motor assembly provides said second motive force.