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AssigneeHygen SIA
InventorAleksejs Safronovs
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This present invention relates to a preparation of gaseous fuel (natural gas for example) for its further transfer under pressure to fuel tank of a vehicle 22. This object is achieved by a method for compressing gas by alternate transfer of gas into two vertically arranged compressing vessels 1 and 2, its compression and forcing into high-pressure vessels by filling the compressing vessels 1 and 2 with working fluid 30 under pressure by means of a hydraulic drive 5. A novelty of this method lies in that, each cycle of gas 29 compressing and its forcing out of the compressing vessels 1 and 2 is performed until these vessels are fully filled with the working fluid 30 contained in the compressing vessels 1 and 2 and alternately forced out of one compressing vessel into the other in response to a signal sent by fluid-level sensor 4.
A method for compressing a gaseous fuel for fueling a vehicle by alternate gas supply into two vertically arranged compressing vessels with further compression of gas and forcing it out into the fuel tank of the vehicle by alternately filling the compressing vessels with working fluid under pressure characterized in that each cycle of gas forced out from the compressing vessels is carried out until completely filling said vessels with working fluid contained in the compressing vessels and alternately pumped from one compressing vessel into the other.
A gas-filling device for fueling a vehicle with a gaseous fuel comprising two compressing vessels connected through one-way valves to a gas network and communicating with each other by gas and hydraulic pipelines, a hydraulic pump and an electric control unit, and the hydraulic pipeline is connected to the hydraulic pump, the gas pipeline being provided with a vehicle fueling connector, characterized in that each compressing vessel is provided with a shut-off device integrated with a fluid-level sensor and mounted in the neck of the compressing vessel.
Dependencies are inferred from the claim text.