Hybrid dual configuration transmission

A method of operating a hybrid transmission comprising a transmission input shaft, an electric motor, a planetary gear set coupled to said electric motor, a first clutch mechanism coupled to said planetary gear set, a second clutch mechanism coupled to said transmission input shaft and said planetary gear set, a first input shaft coupled to said planetary gear set, a second input shaft coupled to said second clutch mechanism, an output shaft, a first plurality of gears coupled to said output shaft, and a second plurality of gears coupled to said output shaft, wherein:

• said first input shaft is coupled to said first plurality of gears to provide a first plurality of gear ratios between said transmission input shaft and said output shaft, and
• said second input shaft is coupled to said second plurality of gears to provide a second plurality of gear ratios between said transmission input shaft and said output shaft, said method comprising:
• placing said first clutch mechanism in a deactivated state;
• if said second clutch mechanism is in a deactivated state:
• engaging a gear ratio from said second plurality of gear ratios,
• activating said second clutch mechanism after said gear ratio from said second plurality of gear ratios is engaged, and
• disengaging a gear ratio from said first plurality of gear ratios after said second clutch mechanism is activated;
• and
• if said second clutch mechanism is in an activated state:
• engaging a gear ratio from said first plurality of gear ratios, and
• deactivating said second clutch mechanism after said gear ratio from said first plurality of gear ratios is engaged.

A method of operating a hybrid transmission comprising a transmission input shaft, an electric motor, a planetary gear set coupled to said electric motor, a first clutch mechanism coupled to said planetary gear set, a second clutch mechanism coupled to said transmission input shaft and said planetary gear set, a first input shaft coupled to said planetary gear set, a second input shaft coupled to said second clutch mechanism, an output shaft, a first plurality of gears coupled to said output shaft, and a second plurality of gears coupled to said output shaft, wherein:

• said first input shaft is coupled to said first plurality of gears to provide a first plurality of gear ratios between said transmission input shaft and said output shaft, and
• said second input shaft is coupled to said second plurality of gears to provide a second plurality of gear ratios between said transmission input shaft and said output shaft, said method comprising:
• placing said first clutch mechanism in a deactivated state;
• placing said second clutch mechanism in an activated state;
• if a gear ratio from said second plurality of gear ratios is to be engaged:
• engaging a gear ratio from said second plurality of gear ratios, and
• disengaging a gear ratio from said first plurality of gear ratios after said gear ratio from said second plurality of gear ratios is engaged;
• and
• if a gear ratio from said first plurality of gear ratios is to be engaged:
• engaging a gear ratio from said first plurality of gear ratios, and
• disengaging a gear ratio from said second plurality of gear ratios after said gear ratio from said first plurality of gear ratios is engaged.