SYSTEM FOR VEHICLE PROPULSION HAVING AND METHOD OF MAKING SAME
First Claim
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1. A vehicle propulsion system comprising:
- an electric machine (EM) configured to generate an unconditioned output;
a continuously variable transmission (CVT) having an input side and an output side, the input side mechanically coupled to the EM and configured to receive the unconditioned output from the EM and produce a conditioned output on the output side; and
a fixed-ratio transmission mechanically coupled to the output side of the CVT and configured to;
receive the conditioned output from the CVT; and
produce a reconditioned output.
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Abstract
A vehicle propulsion system includes an electric machine (EM) configured to generate an unconditioned output. The vehicle propulsion system also includes a continuously variable transmission (CVT) having an input side and an output side, the input side mechanically coupled to the EM and configured to receive the unconditioned output from the EM and produce a conditioned output on the output side. A fixed-ratio transmission is mechanically coupled to the output side of the CVT and configured to receive the conditioned output from the CVT and produce a reconditioned output.
85 Citations
26 Claims
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1. A vehicle propulsion system comprising:
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an electric machine (EM) configured to generate an unconditioned output; a continuously variable transmission (CVT) having an input side and an output side, the input side mechanically coupled to the EM and configured to receive the unconditioned output from the EM and produce a conditioned output on the output side; and a fixed-ratio transmission mechanically coupled to the output side of the CVT and configured to; receive the conditioned output from the CVT; and produce a reconditioned output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle having a vehicle propulsion system, the vehicle comprising:
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a vehicle traction system; an electromechanical device configured to produce an unconditioned output; a continuously variable transmission (CVT) having an input side and an output side, the input side mechanically coupled to the electromechanical device and configured to receive the unconditioned output and output a conditioned output on the output side; and a fixed-ratio transmission attached to the output side of the CVT and configured to; receive the conditioned output from the CVT; and deliver a desired vehicle propulsion system output to the vehicle traction system. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of fabricating a vehicle power system comprising:
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coupling an output of an electric motor (EM) to an input side of a continuously variable transmission (CVT); coupling a fixed transmission to an output side of the CVT; and coupling the fixed transmission to a vehicle traction system, the fixed transmission configured to modify an output of the CVT and deliver the modified CVT output to the vehicle traction system. - View Dependent Claims (24, 25, 26)
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Specification