Two-mode, input-split, parallel, hybrid transmission
First Claim
1. A hybrid transmission, comprising:
- an input means to receive power from an engine;
power output means;
first and second motor/generators;
energy storage means for accepting power from, and supplying power to, said first and second motor/generators;
control means for regulating power flow between said energy storage means and said motor/generators as well as between said first and second motor/generators;
at least a first planetary gear set;
said first planetary gear set having at least three members including an inner gear member, an outer gear member and a carrier gear member having a plurality of planet gear members which meshingly engage both of the inner and outer gear members;
means operatively to connect said first motor/generator to a first of said gear members in said first planetary gear setmeans operatively to connect said second motor/generator to a second of said gear members in said first planetary gear set;
means operatively to connect said input means to a third of said gear members of said first planetary gear set;
means operatively to connect one of said gear members in said first planetary gear set to said power output means;
a first torque transfer device selectively effecting an operative connection between one of said gear members in said first planetary gear set and said power output means; and
a second torque transfer device selectively effecting a power transfer between another of said gear members in said first planetary gear set and said power output means.
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Accused Products
Abstract
A variable, two-mode, input-split, parallel, hybrid electric transmission for a vehicle has an input shaft receiving power from the vehicle engine, and an output shaft delivering power to drive the vehicle. First and second motor/generators are employed as are energy storage devices, such as batteries, for accepting power from, and supplying power to, the first and second motor/generators. A control unit regulates power flow between the energy storage devices and the motor/generators as well as between the first and second motor/generators. At least one planetary gear set is used. Each planetary gear set has an inner gear member and an outer gear member, each of which meshingly engage a plurality of planet gear members supported on a carrier. The input shaft is operatively connected to one of the gear members in the planetary gear set, and the output shaft is operatively connected to one of the other gear members in the planetary gear set. One of the motor/generators is connected to at least the remaining gear member in the planetary gear set, and the other motor/generator is operatively connected to the output shaft. A second planetary gear set may be interposed between one of the motor/generators and the output shaft and/or between the output shaft and the first planetary gear set.
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Citations
23 Claims
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1. A hybrid transmission, comprising:
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an input means to receive power from an engine; power output means; first and second motor/generators; energy storage means for accepting power from, and supplying power to, said first and second motor/generators; control means for regulating power flow between said energy storage means and said motor/generators as well as between said first and second motor/generators; at least a first planetary gear set; said first planetary gear set having at least three members including an inner gear member, an outer gear member and a carrier gear member having a plurality of planet gear members which meshingly engage both of the inner and outer gear members; means operatively to connect said first motor/generator to a first of said gear members in said first planetary gear set means operatively to connect said second motor/generator to a second of said gear members in said first planetary gear set; means operatively to connect said input means to a third of said gear members of said first planetary gear set; means operatively to connect one of said gear members in said first planetary gear set to said power output means; a first torque transfer device selectively effecting an operative connection between one of said gear members in said first planetary gear set and said power output means; and a second torque transfer device selectively effecting a power transfer between another of said gear members in said first planetary gear set and said power output means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification