Method and diagnostic facility for checking high-pressure tank valves, high-pressure tank system and motor vehicle with a high-pressure tank system
First Claim
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1. 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:
- 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.
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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
14 Claims
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1. 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 (2, 3, 4, 5, 6, 7, 8)
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9. 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 (10, 11)
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12. 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 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 (13, 14)
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Specification