Wide ratio transmission
AssigneeGM Global Technology Operations LLC
InventorsJoel Maguire, Madhusudan Raghavan
Life of this patent
Estimating the term…
Abstract
A transmission is provided that utilizes a unique packaging scheme for torque-transmitting mechanisms and gear drive members in order to minimize the overall axial length of the transmission. Specifically, the transmission may include a clutch housing that is connected for common rotation with a transmission input member. A rotatable hub member may be connected for common rotation with both the clutch housing and a gear member, thereby connecting the gear member for common rotation with the input member. Preferably, the rotatable hub member is connected to the clutch housing by the reaction plates that extend from the clutch housing. First and second torque-transmitting mechanisms may be packaged within the clutch housing.
Claims17
A transmission comprising:
- an input member;
- an output member;
- a clutch housing connected for common rotation with said input member;
- a first gear member;
- and
- a rotatable hub member connected for common rotation with both said clutch housing and said first gear member, said first gear member thereby being connected for common rotation with said input member
A transmission comprising:
- an input member;
- an output member;
- a first, a second and a third planetary gear set each having first, second and third members;
- said input member being continuously interconnected with a member of said planetary gear sets, and said output member being continuously interconnected with another member of said planetary gear sets;
- a first interconnecting member continuously interconnecting said first member of said first planetary gear set with said first member of said second planetary gear set;
- a second interconnecting member continuously interconnecting said second member of said second planetary gear set with said first member of said third planetary gear set;
- wherein said third member of said second planetary gear set is continuously connected with a stationary member and
- five torque-transmitting mechanisms for selectively interconnecting said members of said planetary gear sets with said input member, with said stationary member or with other members of said planetary gear sets, said five torque-transmitting mechanisms being engaged in combinations of two to establish seven forward speed ratios between said input member and said output member.
A transmission comprising:
- an input member;
- an output member;
- a clutch housing connected for common rotation with said input member about an axis;
- a first and a second torque-transmitting mechanisms packaged radially inward of said clutch housing;
- three planetary gear sets axially spaced from said clutch housing such that said clutch housing is between said input member and said planetary gear sets and each having gear members rotatable about said axis;
- wherein one of said torque-transmitting mechanisms is selectively engagable to connect said clutch housing with a member of one of said planetary gear sets;
- wherein another of said torque-transmitting mechanisms is selectively engagable to connect said clutch housing with a member of another of said planetary gear sets;
- and
- wherein a different member of one of said planetary gear sets is continuously connected for common rotation with said hub member.
Dependencies are inferred from the claim text.