Patent ID: 7421919

Claim:
A double clutch transmission ( 1 ) comprising: a double clutch ( 2 ) having an input ( 8 ) connected with a drive shaft of a drive engine and first and second outputs, a transmission shaft ( 5 ) connected to the first output of the double clutch ( 2 ), a hollow transmission shaft ( 4 ) coaxial with the transmission shaft ( 5 ) and connected to the second output of the double clutch ( 2 ), an intermediate shaft ( 22 ), a plurality of fixed gears ( 12 , 13 , 14 , 15 , 26 , 27 , 35 , 36 ) mounted on each of the transmission shaft ( 5 ), the hollow transmission shaft ( 4 ) and the intermediate shaft ( 22 ), a plurality of idler gears ( 10 , 11 , 16 , 17 , 29 , 32 , 33 , 34 ) rotatably supported on each of the transmission shaft ( 5 ), the hollow transmission shaft ( 4 ) and the intermediate shaft ( 22 ), and a plurality of shifting units ( 20 , 21 , 37 , 38 ) for non-rotatably connecting associated idler gears ( 10 , 11 , 16 , 17 , 29 , 32 , 33 , 34 ) to corresponding ones of the transmission shaft ( 5 ), the hollow transmission shaft ( 4 ) and the intermediate shaft ( 22 ) for realizing desired transmission gear ratios, wherein a first idler gear and a second idler gear are associated with each shifting unit and the first and the second idler gears associated with each shifting unit are non-sequentially related, and a first fixed gear for a reverse gear ratio (RG) and a second fixed gear for a first gear ratio (G 1 ) are arranged as one of axially adjacent gears on the transmission shaft ( 5 ), and a single gear on the transmission shaft ( 5 ).