Diesel Exhaust Fluid Pump Electronics and Tank Unit Cooling
AssigneeCaterpillar Inc.
InventorsLeon J. Bezaire, Rajesh Kandibanda, Mohammed Ohidul Islam, Krishna N. Pai, Siddartha Veliganti Reddy
Life of this patent
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Abstract
A housing for an exhaust fluid pump electronics and tank unit may include a chamber and a deflection flange. The housing may include a removable cover including a vent and a cover flange. The cover flange may be removably coupled to the deflection flange. A duct may be disposed on the housing and capable of fluidly communicating the chamber to a negative pressure source.
Claims20
A housing for an exhaust fluid pump electronics and tank unit of a vehicle, the housing comprising:
- a chamber formed collectively of a first and a second side wall, an upper wall, a lower wall, an aft wall, and a fore wall, the first and the second side wall, the upper wall, and the fore wall collectively forming an opening;
- a deflection flange extending outwardly from each of the first and the second side wall, the upper wall, and the fore wall proximate the opening;
- a removable cover including a vent and a cover flange, the cover flange removably coupled to the deflection flange;
- and
- a duct disposed on the first side wall, the duct capable of fluidly communicating the chamber to a negative pressure source.
A diesel-fueled vehicle, the vehicle comprising:
- a housing formed collectively of a first and a second side wall, an upper wall, a lower wall, an aft wall, and a fore wall, the first and the second side wall, the upper wall, and the fore wall collectively forming an opening;
- a deflection flange extending outwardly from each of the first and the second side wall, the upper wall, and the fore wall proximate the opening;
- a removable cover including a vent and a cover flange, the cover flange removably coupled to the deflection flange;
- a diesel exhaust fluid (DEF) pump electronics and tank unit (PETU) disposed in the housing;
- a radiator fan shroud surrounding a radiator fan;
- and
- a duct coupling the housing to the radiator fan shroud at a location wherein the radiator fan creates a negative pressure.
A method of insulating and cooling a diesel exhaust fluid (DEF) pump electronics and tank unit (PETU) from high temperatures of a diesel-fueled vehicle, the method comprising:
- providing an insulated housing to surround the DEF PETU and isolate the DEF PETU from the high temperatures;
- providing a vent on a removable cover of the insulated housing;
- and
- providing a duct on the insulated housing to allow fluid communication between the insulated housing and a radiator fan at a location wherein the radiator fan creates a negative pressure that draws ambient air through the vent into the insulated housing and through the duct.
Dependencies are inferred from the claim text.