Hydraulic hybrid powertrain with exhaust-heated accumulator
First Claim
Patent Images
1. A hydraulic hybrid powertrain, comprising:
- an engine;
at least one pump/motor assembly operatively associated with the engine;
an accumulator fluidly coupled to the at least one pump/motor assembly;
a reservoir fluidly coupled to the at least one pump/motor assembly; and
a heat exchanger associated with the accumulator, the heat exchanger being configured to receive exhaust from the engine.
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Abstract
A hydraulic hybrid powertrain is provided. The hydraulic hybrid powertrain has an engine. The hydraulic hybrid powertrain also has at least one pump/motor assembly operatively associated with the engine. The hydraulic hybrid powertrain further has an accumulator fluidly coupled to the at least one pump/motor assembly. The hydraulic hybrid powertrain further still has a reservoir fluidly coupled to the at least one pump/motor assembly. The hydraulic hybrid powertrain also has a heat exchanger associated with the accumulator and the heat exchanger is configured to receive exhaust from the engine.
59 Citations
20 Claims
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1. A hydraulic hybrid powertrain, comprising:
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an engine; at least one pump/motor assembly operatively associated with the engine; an accumulator fluidly coupled to the at least one pump/motor assembly; a reservoir fluidly coupled to the at least one pump/motor assembly; and a heat exchanger associated with the accumulator, the heat exchanger being configured to receive exhaust from the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of recovering energy in a hydraulic hybrid powertrain, comprising:
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operating an engine and an associated pump/motor assembly; alternately directing fluid between a reservoir and an accumulator with the pump/motor assembly; and heating the fluid in the accumulator by directing exhaust from the engine to a heat exchanger associated with the accumulator. - View Dependent Claims (11, 12, 13)
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14. A machine, comprising:
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an engine; at least one pump/motor assembly operatively connected to the engine; an accumulator fluidly coupled to the at least one pump/motor assembly; a reservoir fluidly coupled to the at least one pump/motor assembly; a heat exchanger associated with the accumulator, the heat exchanger being configured to partially receive exhaust from the engine; and an output component operatively associated with at least one of the engine and the at least one pump/motor assembly. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification