Dual clutch transmission with multiple range gearing

Details Dual clutch transmission with multiple range gearing Dual clutch transmission with multiple range gearing

2011-03-29

2011-03-29

Lewis, Tisha D (Department: 3655)

Machine element or mechanism

Gearing

Interchangeably locked

C074S331000, C475S214000, C475S215000, C475S218000

Reexamination Certificate

active

07913581

ABSTRACT:
A vehicle powertrain comprising dual torque input clutches and a multiple speed transmission with ratio range gearing is disclosed. The range gearing provides increased gear ratio coverage. A transition between a low speed ratio range and a high speed ratio range is achieved with no torque interruption. A shift from one gear ratio to an adjacent gear ratio in a speed ratio range during a shift sequence is preceded by preselecting the adjacent gear ratio.

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International Search Report for PCT/IB2008/000244 dated May 27, 2008.

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