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US 6,470,861 B1Granted
Fluid flow through an integrated pressure management apparatus
AssigneeSiemens Canada Limited
InventorPaul D. Perry
Life of this patent
Estimating the term…
Abstract
An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.
Claims8
An integrated pressure management apparatus comprising:
- a housing defining an interior chamber, the housing including first and second ports communicating with the interior chamber;
- a pressure operable device separating the chamber into a first portion and a second portion, the first portion communicating with the first port, the second portion communicating with the second port, the pressure operable device permitting fluid communication between the first and second ports in a first configuration and preventing fluid communication between the first and second ports in a second configuration;
- a signal chamber in fluid communication with the first portion of the interior chamber, the pressure operable device further separating the signal chamber from the second portion of the interior chamber;
- a solenoid displacing the pressure operable device from the first configuration to the second configuration;
- and
- a passageway through the housing, the passageway providing the fluid communication between the first portion of the interior chamber and the signal chamber, the passageway being defined at least in part by a void between the housing and the solenoid.
3 more elements
Dependencies are inferred from the claim text.