Method for filling a vehicle fuel tank with gas
AssigneeGreenField AG
InventorHeinz Mutter
Life of this patent
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Abstract
A method for filling a vehicle fuel tank with a gas is provided, in which the vehicle fuel tank (31) is connected to a delivery device (2) by a pressure-tight line (10) and the gas stored under pressure is filled into the vehicle fuel tank (31) from a storage unit (3) by means of the delivery device (2). The method comprises the following steps: the instantaneous value of a parameter, which is representative of the instantaneous level of filling of the vehicle fuel tank (31), is determined during filling with the aid of a sensor apparatus (32, 33) arranged in the vehicle fuel tank (31); the filling is ended when the parameter has reached a pre-settable end value.
Claims10
A method for filling a vehicle fuel tank with a gas wherein the vehicle fuel tank (31) is connected to a delivery device (2) by a pressure-tight line (10) and the gas stored under pressure is filled into the vehicle fuel tank (31) from a storage unit (3) by means of the delivery device (2), characterised by the following steps:
- the instantaneous value of a parameter (ρT), which is representative of the instantaneous state of filling of the vehicle fuel tank (31), is determined during filling with the aid of a sensor apparatus (32, 33) arranged in the vehicle fuel tank (31);
- the filling is ended when the parameter (ρT) has reached a pre-settable end value (ρE).
A method in accordance with one of the preceding claims, wherein the mass (mG) of the gas supplied is detected by measurement in the delivery device (2), a control value (ρm) corresponding to the parameter (ρT) is determined therefrom, the control value (ρm) is compared in each case with the parameter (ρT), and an error message is output or filling aborted when the deviation between the parameter (ρT) and the control value (ρm) exceeds a pre-settable limit value (D).
A method in accordance with one of the preceding claims wherein the density (ρT) of the gas in the vehicle fuel tank (31) is determined as the parameter.
A method in accordance with one of the preceding claims wherein the sensor apparatus arranged in the vehicle fuel tank comprises a temperature sensor (33) and a pressure sensor (32) with which the temperature and the pressure of the gas in the fuel tank is measured and the density (ρT) of the gas is determined therefrom as the parameter.
A gas refuelling plant operated in accordance with a method in accordance with one of the preceding claims.
Dependencies are inferred from the claim text.