Pressure control valve for a fuel system
AssigneeCaterpillar Inc.
InventorsAlan Stockner, Amy Hess, Daniel Ibrahim
Life of this patent
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Abstract
A valve has a housing defining an interior of the valve. The valve has a first passage in the housing and a second passage in the housing. The valve has a flow limiter movable between a first position at which the first passage is in fluid communication with the second passage and a second position at which the first passage is not in fluid communication with the second passage. The valve has a flow restriction device movable between a first position at which a first flow rate is permitted into the interior of the valve and a second position at which a second flow rate is permitted out of the interior of the valve. The first flow rate is greater than the second flow rate.
Claims20
A fuel system, comprising:
- a fuel source;
- a fuel injector;
- and
- a valve having:
- a first passage in fluid communication with said fuel source,
- a second passage in fluid communication with said fuel injector,
- a flow limiter movable between a first position at which said first passage is in fluid communication with said second passage and a second position at which said first passage is not in fluid communication with said second passage,
- and a flow restriction device movable between a first position at which a first flow rate is permitted from said fuel source into said valve and a second position at which a second flow rate is permitted from said valve to said fuel source, said first flow rate being greater than said second flow rate.
A valve for use in a fuel system, said valve comprising:
- a housing defining an interior of said valve;
- a first passage in said housing, said passage configured to permit a flow of a fuel into said interior;
- a second passage in said housing, said passage configured to permit a flow of said fuel from said interior;
- a flow limiter movable between a first position at which said first passage is in fluid communication with said second passage and a second position at which said first passage is not in fluid communication with said second passage;
- a flow restriction device movable between a first position at which a first flow rate of fuel is permitted into said interior and a second position at which a second flow rate of fuel is permitted out of said interior, said first flow rate being greater than said second flow rate.
A fuel system, comprising:
- a fuel source;
- a fuel injector;
- and
- a valve having:
- a first passage in fluid communication with said fuel source,
- a second passage in fluid communication with said fuel injector,
- a flow limiter movable between a first position at which said first passage is in fluid communication with said second passage and a second position at which said first passage is not in fluid communication with said second passage,
- means for permitting a flow of a fuel at a first flow rate from said fuel source into said valve, and
- means for restricting to a second flow rate a flow of said fuel from said valve to said fuel source, said first flow rate being greater than said second flow rate.
Dependencies are inferred from the claim text.