Housing for an integrated pressure management apparatus

• US 6,585,230 B2
• Filed: 08/01/2002
• Issued: 07/01/2003
• Est. Priority Date: 11/19/1999
• Status: Expired due to Fees

• Current Assignee: Siemens Canada Limited (Siemens AG)
• Original Assignee: Siemens Canada Limited (Siemens AG)
• Inventors: Perry, Paul D.
• Primary Examiner(s): RIVELL, JOHN A
• Application Number:
  US10/209,637
• Publication Number:
  US 20030029506A1
• Time in Patent Office: 334 Days
• Field of Search: 251/366, 251/367, 251/129.03, 251/14, 137/493, 137/494, 137/495, 137/493.9, 123/516, 123/518, 123/519, 123/520
• US Class Current: 251/366
• CPC Class Codes: F02M 25/0809 Judging failure of purge control system
• CPC Class Codes: F02M 25/0836 Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
• CPC Class Codes: F02M 25/0854 Details of the absorption canister
• CPC Class Codes: Y10T 137/7771 Bi-directional flow valves
• CPC Class Codes: Y10T 137/7781 With separate connected fluid reactor surface
• CPC Class Codes: Y10T 137/86324 Tank with gas vent and inlet or outlet

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.

Claims

1. A housing for an integrated pressure management apparatus, the housing comprising:

an integral homogenous primary body partially defining an interior chamber;

first and second ports communicating with the interior chamber;

a first component opening that facilitates installation of a pressure operable device into the interior chamber, the pressure operable device separating the interior 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; and

a secondary body attachable to the primary body and occluding the first component installation opening; and

a second component opening that facilitates installation of a solenoid into the interior chamber, the solenoid displacing the device from the first configuration to the second configuration; and

a tertiary body attachable to the primary body and occluding the second component installation opening.

2. The housing according to claim 1, further comprising:

a first seal member interposed between the primary body and the secondary body; and

a second seal member interposed between the primary body and the tertiary body;

wherein the first and second seal members preventing leakage with respect to the interior chamber.

3. The housing according to claim 1, further comprising:

a plurality of electrical terminals supported by the tertiary body;

a first set of connections electrically coupling at least one of the plurality of electrical terminals and a switch disposed in the interior chamber, the switch signaling displacement of the pressure operable device in response to negative pressure at a first pressure level in the first portion of the interior chamber; and

a second set of connections electrically coupling at least one of the plurality of electrical terminals and the solenoid.

4. The housing according to claim 3, wherein the plurality of electrical terminals penetrate the tertiary body.

5. The housing according to claim 4, further comprising:

a seal interposed between the plurality of electrical terminals and the tertiary body, the seal preventing leakage with respect to the interior chamber.

6. The housing according to claim 3, wherein the first set of connections comprises a lead frame.

7. The housing according to claim 1, wherein the first component opening is oriented relatively orthogonally with respect to the second component opening, and the secondary body is oriented generally orthogonally with respect to the tertiary body.