System for recovering engine exhaust energy
AssigneeCaterpillar Inc.
InventorWade J. Robel
Life of this patent
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Abstract
A system for recovering engine exhaust energy is provided. The system includes an exhaust system including a first exhaust branch and a second exhaust branch. The system includes a first and a second group of exhaust valves associated with a plurality of engine cylinders. The system also includes an energy recovering assembly. The system further includes a control mechanism configured to control at least one of the first and second groups of exhaust valves according to a determined timing strategy based on at least one engine operating parameter.
Claims20
A system for recovering engine exhaust energy, comprising:
- an exhaust system including a first exhaust branch and a second exhaust branch;
- a first and a second group of exhaust valves associated with a plurality of engine cylinders;
- an energy recovering assembly;
- and
- a control mechanism configured to control at least one of the first and second groups of exhaust valves according to a determined timing strategy based on at least one engine operating parameter.
A method of recovering engine exhaust energy, comprising:
- directing exhaust gases from a plurality of engine cylinders through a first group of exhaust valves and into a first exhaust branch of an exhaust system;
- directing exhaust gases from the plurality of engine cylinders through a second group of exhaust valves and into a second exhaust branch of the exhaust system;
- recovering energy from the exhaust gases in at least one of the first and second exhaust branches by an energy recovering assembly;
- and
- controlling at least one of the first and second groups of exhaust valves according to a determined timing strategy based on at least one engine operating parameter.
A machine, comprising:
- a transmission system;
- and
- an engine system, including:
- a combustion engine including a plurality of engine cylinders and a drive output device;
- and
- a system for recovering engine exhaust energy, including:
- an exhaust system having a first and a second exhaust branch;
- a first and a second group of exhaust valves;
- at least one energy recovering assembly disposed in the first and second exhaust branches;
- and
- a control mechanism configured to control the first, the second, or both groups of exhaust valves according to a timing strategy based on at least one measured engine operating parameter.
Dependencies are inferred from the claim text.