Compound transmission having double splitter gear auxiliary section

A compound transmission comprising a main transmission section connected in series with an auxiliary transmission section, the auxiliary transmission section comprising:

• an input shaft having an auxiliary drive gear rotationally fixed thereto;
• an output shaft having a first splitter gear and a second splitter gear rotatably mounted thereon;
• an auxiliary section countershaft having first, second and third auxiliary countershaft gears rotationally fixed to the auxiliary countershaft and rotatably engaged with the auxiliary drive gear, first splitter gear, and second splitter gear, respectively;
• a first splitter clutch fixed for rotation with the output shaft and having a first position for coupling the auxiliary drive gear to the output shaft, a second nonengaged position, and a third position for coupling the first splitter gear to the output shaft;
• and
• a second splitter clutch fixed for rotation with the output shaft and having a first nonengaged position and a second position for coupling the second splitter gear to the output shaft.

A compound transmission comprising a main transmission section connected in series with an auxiliary transmission section, the auxiliary transmission section comprising:

• an input shaft having an auxiliary drive gear rotationally fixed thereto;
• an output shaft having a first splitter gear and a second splitter gear rotatably mounted thereon;
• an auxiliary section countershaft having first, second and third auxiliary countershaft gears rotationally fixed to the auxiliary countershaft and rotatably engaged with the auxiliary drive gear, first splitter gear, and second splitter gear, respectively;
• a first splitter clutch fixed for rotation with the input shaft and having a first nonengaged position and a second position for coupling the input shaft to the output shaft;
• and
• a second splitter clutch fixed for rotation with the output shaft and having a first position for coupling the first splitter gear to the output shaft, a second nonengaged position, and a third position for coupling the second splitter gear to the output shaft.