Diesel exhaust fluid systems
AssigneeBenecor, Inc.
InventorsBrendan J. Foster, Hendrik F. Stoltz
Life of this patent
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Abstract
A diesel exhaust fluid system for use on a diesel-powered machine, including a storage tank adapted to store diesel exhaust fluid, a receiver, and a shut-off valve. The receiver is disposed in selective fluid communication with the storage tank and is adapted to receive diesel exhaust fluid. The shut-off valve is interposed in fluid communication between the storage tank and the receiver and has: a first position wherein diesel exhaust fluid can flow from the receiver to the storage tank, and a second position wherein flow is interrupted from the receiver to the storage tank. The shut-off valve moves from the first position to the second position in response to predetermined accumulation of diesel exhaust fluid in the storage tank.
Claims20
A diesel exhaust fluid storage system for use on a diesel-powered machine, said storage system comprising:
- a storage tank adapted to store a diesel exhaust fluid;
- a receiver disposed in selective fluid communication with said storage tank and adapted to receive the diesel exhaust fluid;
- and
- a shut-off valve interposed in fluid communication between said storage tank and said receiver, said shut-off valve having:
- a first position wherein the diesel exhaust fluid can flow across said shut-off valve from said receiver to said storage tank, and a second position wherein flow is interrupted across said shut-off valve from said receiver to said storage tank;
- wherein said shut-off valve moves from said first position to said second position in response to a predetermined accumulation of the diesel exhaust fluid in said storage tank;
- and
- a fluid pump that acts to fill said storage tank, said fluid pump including a first pumping direction wherein the diesel exhaust fluid is displaced across said fluid pump from a main supply tank to said storage tank;
- and a second pumping direction wherein said fluid pump reverses flow direction such that the diesel exhaust fluid is drained across said fluid pump;
- wherein said fluid pump switches from said first pumping direction to said second pumping direction in response to a predetermined increase in fluid pressure in a diesel exhaust fluid supply system.
A diesel exhaust fluid supply system for cooperating with a diesel-powered machine having a diesel exhaust fluid storage system including a receiver disposed in fluid communication with a shut-off valve mounted on a storage tank via a supply line, said supply system comprising:
- a main supply tank adapted to store diesel exhaust fluid;
- a nozzle disposed in selective fluid communication with said main supply tank for releasably attaching to the receiver of the storage system;
- and
- a fluid pump interposed in fluid communication between said main supply tank and said nozzle for filling the storage tank when said nozzle is releasably attached to the receiver, said fluid pump having:
- a first pumping direction wherein diesel exhaust fluid is displaced across said fluid pump from said main supply tank to the storage tank;
- and a second pumping direction wherein said fluid pump reverses flow direction such that diesel exhaust fluid is drained across said fluid pump from the supply line to said main supply tank;
- wherein said fluid pump switches from said first pumping direction to said second pumping direction in response to a predetermined increase in fluid pressure occurring at said nozzle.
A diesel exhaust fluid system comprising:
- a storage system for use on a diesel-powered machine, said storage system including:
- a storage tank adapted to store diesel exhaust fluid,
- a receiver disposed in selective fluid communication with said storage tank and adapted to receive diesel exhaust fluid,
- a supply line extending between said storage tank and said receiver, and
- a shut-off valve interposed in fluid communication between said storage tank and said receiver, said shut-off valve having:
- a first position wherein diesel exhaust fluid can flow across said shut-off valve from said receiver to said storage tank and a second position wherein flow is interrupted across said shut-off valve from said receiver to said storage tank and wherein said shut-off valve moves from said first position to said second position in response to predetermined accumulation of diesel exhaust fluid in said storage tank;
- and
- a supply system for filling said storage system, said supply system including:
- a main supply tank adapted to store diesel exhaust fluid,
- a nozzle disposed in selective fluid communication with said main supply tank for releasably attaching to said receiver of said storage system, and
- a fluid pump interposed in fluid communication between said main supply tank and said nozzle for filling said storage tank when said nozzle is releasably attached to said receiver, said fluid pump having:
- a first pumping direction wherein diesel exhaust fluid is displaced across said fluid pump from said main supply tank to said storage tank;
- and a second pumping direction wherein said fluid pump reverses flow direction such that diesel exhaust fluid is drained across said fluid pump from said supply line to said main supply tank;
- wherein said fluid pump switches from said first pumping direction to said second pumping direction in response to a predetermined increase in fluid pressure occurring at said nozzle.
Dependencies are inferred from the claim text.