Semi-power split hybrid transmission with multiple modes and fixed gears

A semi-power split hybrid transmission capable of operation in a plurality of Electric Variable Transmission modes and with fixed gears, comprising:

• an engine connected to an input shaft;
• a first planetary gear set and second planetary gear set connected to:
• a first and second electric motor;
• the input shaft;
• a first and second selectively engageable brake;
• and
• a first, second, and third selectively engageable clutch;
• an output shaft connected to, the second planetary gear set;
• wherein the first and second electric motors are disposed before the first planetary gear set;
• wherein the first planetary gear set comprises a sun gear, a ring gear, and a set of planetary pinions meshing with the sun and ring gears, and a first planetary carrier;
• wherein the second planetary gear set comprises a normal sun gear, a compound sun gear, a ring gear, a long set of planetary pinions meshing with the compound sun gear, a short set of planetary pinions meshing with the normal sun gear and the long set of planetary pinions, and a second planetary carrier common to both the long and short set of planetary pinions;
• and
• wherein connections in the semi-power split hybrid transmission comprise:
• the sun gear connected to the first selectively engageable brake and the first electric motor;
• the ring gear connected to the second electric motor and the first and third selectively engageable clutches;
• the first planetary carrier connected to the input shaft;
• the normal sun gear connected to the first selectively engageable clutch;
• the compound sun gear connected to the second selectively engageable brake and the third selectively engageable clutch;
• the ring gear connected to the output shaft;
• and
• the second planetary carrier connected to the second selectively engageable clutch.