Valve for methane in automotive systems with by-pass system of the excess flow blocking device
First Claim
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1. Valve for controlling flow of methane in automotive systems, the valve being adapted for a tank and comprising:
- a valve body including a tank duct ending in at least one main aperture, an entry duct, a delivery duct and a discharge duct;
a thermal safety device, operating between the tank duct and the discharge duct and normally closed to obstruct passage of methane between the tank duct and the discharge duct, adapted to switch to an open configuration if external temperature exceeds a predefined threshold value;
a blocking device, operating upstream of the delivery duct, adapted to switch to a closed configuration in which the blocking device chokes the passage of methane towards the delivery duct if the flow of methane exceeds a predefined threshold value, and normally open, the blocking device being positioned upstream of the main aperture of the tank duct;
a feed duct fluidically separate from the tank duct, connectable downstream with the delivery duct;
wherein the blocking device is operative upstream of the feed duct and is responsive to the flow of methane through the feed duct, andwherein the feed duct comprises a by-pass duct inside the tank duct.
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Abstract
A valve (1) controlling flow of methane gas in automotive systems includes a feed duct (30) of the gas to the delivery duct (20); having a by-pass duct (32) delimited by a by-pass duct (34) internal to the tank duct (6), to limit the overall dimensions in the attachment area to the tank.
11 Citations
13 Claims
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1. Valve for controlling flow of methane in automotive systems, the valve being adapted for a tank and comprising:
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a valve body including a tank duct ending in at least one main aperture, an entry duct, a delivery duct and a discharge duct; a thermal safety device, operating between the tank duct and the discharge duct and normally closed to obstruct passage of methane between the tank duct and the discharge duct, adapted to switch to an open configuration if external temperature exceeds a predefined threshold value; a blocking device, operating upstream of the delivery duct, adapted to switch to a closed configuration in which the blocking device chokes the passage of methane towards the delivery duct if the flow of methane exceeds a predefined threshold value, and normally open, the blocking device being positioned upstream of the main aperture of the tank duct; a feed duct fluidically separate from the tank duct, connectable downstream with the delivery duct; wherein the blocking device is operative upstream of the feed duct and is responsive to the flow of methane through the feed duct, and wherein the feed duct comprises a by-pass duct inside the tank duct. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification