CNG fueling system
OwnerRichard Allan Poorman, Bradley Wade Fontenotinventors
Life of this patent
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Abstract
A compressed natural gas (CNG) fueling system has a single compressor comprising a first compression stage and a subsequent compression stage, wherein the first compression stage feeds the subsequent compression stage when filling a storage tank, the storage tank is configured to receive CNG from at least one of the first compression stage and the subsequent compression stage of the compressor when filling the storage tank, a CNG feedback to the subsequent compression stage of the compressor from the storage tank, the CNG being introduced back into the compressor at a location downstream relative to an output of the first compression stage, and a first heat exchanger associated with the CNG feedback.
Claims4
A compressed natural gas (CNG) fueling system, comprising:
- a single compressor comprising a first compression stage and a subsequent compression stage;
- at least one of a pressure regulator and a valve disposed between a source of CNG and the first compression stage;
- a pressure sensor disposed between the first compression stage and the subsequent compression stage;
- and
- a control system configured to selectively receive pressure information from the pressure sensor and configured to selectively control the at least one of the pressure regulator and the valve in association with at least one of converting between (1) operating both the first compression stage and the subsequent compression stage to operating only the subsequent compression stage and (2) operating only the subsequent compression stage to operating both the first compression stage and the subsequent compression stage.
Dependencies are inferred from the claim text.