Isolation valve with fast depressurization for high-pressure fuel tank

Patent metadata

Field	Value
Publication number	US-8944100-B2
Application number	US-201113011511-A
Country	US
Kind code	B2
Filing date	Jan 21, 2011
Priority date	Mar 30, 2010
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

An isolation valve includes a flow restrictor disposed in a passage and having a piston with a first orifice and a depressurization valve with a second orifice. The valve also includes a solenoid valve assembly having a coil that is selectively energized by a signal from a controller and an armature that is moveable between first and second positions to open and close the first orifice and/or the second orifice. When the coil is energized, the armature moves to the second position to allow vapor to flow through the first orifice, the depressurization valve selectively opens to allow vapor to flow through the first orifice, the second orifice, or both. The two orifices work together to provide controlled vapor flow.

First claim

What is claimed is:

1. An isolation valve, comprising:
a flow restrictor disposed in a passage, the flow restrictor having
a piston having a first orifice,
a depressurization valve having a second orifice,
a depressurization spring having a biasing force that biases the depressurization valve to an open position;

a flow restrictor spring that applies a biasing force on the flow restrictor to bias the flow restrictor to an open position; and
a solenoid valve assembly, ha…

Assignees

• Pifer Daniel Lee
• Eaton Corp

Inventors

• Pifer Daniel Lee

Classifications

• Y10T137/87338

  Cross-Sectional Technologies · mapped topic

• Y10T137/87394

  Cross-Sectional Technologies · mapped topic

• F16K31/0655

  Mechanical Engineering · mapped topic

• Y10T137/8704

  Cross-Sectional Technologies · mapped topic

• Y10T137/7761

  Cross-Sectional Technologies · mapped topic