METHOD AND DIAGNOSTIC FACILITY FOR CHECKING HIGH-PRESSURE TANK VALVES, HIGH-PRESSURE TANK SYSTEM AND MOTOR VEHICLE WITH A HIGH-PRESSURE TANK SYSTEM
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Abstract
A method and diagnostic facility for checking a plurality of magnetic valves in a high-pressure tank system of a motor vehicle is described. A magnetic valve is activated for opening the magnetic valve. A pressure in a high-pressure tank system is measured while activating the magnetic valve. A valve is determined to be defective if during measuring the pressure a drop in pressure is found.
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Citations
27 Claims
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1-13. -13. (canceled)
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14. A method for the functional testing of magnetic valves of a gas tank in a high-pressure tank system of a motor vehicle, wherein the high-pressure tank system includes comprises at least two gas tanks, each of the gas tanks connected via an associated magnetic valve to a fuel line, the method comprising:
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activating a respective magnetic valve for opening the magnetic valve; continuously measuring a pressure in the high-pressure tank system while activating the respective magnetic valve; and determining that the respective magnetic valve is defective when a drop in pressure is found during measuring the pressure. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A diagnostic facility for the functional testing of magnetic valves of a high-pressure tank system comprising:
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a high-pressure sensor configured to measure a pressure in the high-pressure tank system; and a controller operably connected with the magnetic valves and the high-pressure sensor and configured to; determine a pressure drop is present in the high-pressure tank system from the high pressure sensor; selectively activate the high-pressure valves and contemporaneously measure the pressure in the high-pressure tank system with the high-pressure sensor; and determine that the activated magnetic valve is defective when a drop in pressure is found in response to activating the magnetic valve;
ordetermine that the activated magnetic valve is intact when no drop in pressure is found in response to activating the magnetic valve. - View Dependent Claims (23, 24)
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25. A high-pressure tank system comprising:
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at least two gas tanks, each of which is connected via an associated magnetic valve with a fuel line; a high-pressure sensor; and a controller connected with the magnetic valves and the high-pressure sensor and which is configured to perform a functional test on the magnetic valves including; activating of a respective magnetic valve for opening the magnetic valve; continuously measuring a pressure in the high-pressure tank system while activating the respective magnetic valve; and determining that the respective magnetic valve is defective when a drop in pressure is found during measuring the pressure. - View Dependent Claims (26, 27)
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Specification