Solenoid for an integrated pressure management apparatus

• US 6,478,045 B1
• Filed: 04/05/2000
• Issued: 11/12/2002
• 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:
  US09/543,742
• Time in Patent Office: 951 Days
• Field of Search: 123/516, 123/518, 123/519, 123/520, 137/493, 137/494, 137/495, 137/493.9, 137/560, 251/65, 251/129.15, 200/83.Q, 200/61.86
• US Class Current: 137/495
• 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: F16K 24/00 Devices, e.g. valves, for venting or aerating enclosures equalising valves F16K17/00; arrangement or mounting in pipes or pipe systems F16L55/07; venting or aerating as an additional function of steam traps or like apparatus F16T; ventilation of rooms, vehicles, see the appropriate subclass, e.g. F24F
• CPC Class Codes: Y10T 137/7771 Bi-directional flow valves
• CPC Class Codes: Y10T 137/7782 With manual or external control for line valve

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. 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, the pressure operable device including a ferrous armature, the armature having a first mating feature, the first mating feature being a cone; and

a solenoid displacing the device from the first configuration to the second configuration, the solenoid having a magnetic circuit including a stator, a strap, and the armature, the stator including a second mating feature, the second mating feature being a conical depression, and general mating engagement of the first and second features facilitating movement of the pressure operable device from the second configuration to the first configuration.

2. 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, the pressure operable device including a permanent magnetic armature; and

a solenoid displacing the device from the first configuration to the second configuration, the solenoid having a magnetic circuit including a stator, a strap, and the armature.

3. 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; and

a solenoid displacing the device from the first configuration to the second configuration, the solenoid including a stator extending transversely with respect to a displacement direction of the device between the first and second configurations.