Modular installation kit for auxiliary power unit

A modular installation kit for mounting an auxiliary power unit in a vehicle, said kit comprising:

• an enclosure defined by a forward cap separated along a central axis from an aft cap by an enclosure skin;
• said forward cap comprising at least one mounting pad, wherein said at least one mounting pad is attachable to one or more mounting brackets;
• and an auxiliary power unit interface flange attached to said forward cap and depending axially away from said forward cap, wherein said auxiliary power unit interface flange is capable of engaging said auxiliary power unit, and wherein said auxiliary power unit interface flange is capable of providing support for said auxiliary power unit;
• said aft cap comprising a plurality of aft cap outer sides perpendicular to said central axis and circumscribing said central axis;
• said aft cap having an exhaust hole disposed about said central axis through said aft cap.

A modular installation kit for mounting an auxiliary power unit in a vehicle, said kit comprising:

• an enclosure defined by a forward cap separated along a central axis from an aft cap by an enclosure skin;
• said forward cap comprising a front face located perpendicular to said central axis;
• a mounting face located on a side of said forward cap opposite said front face;
• a plurality of forward cap outer sides perpendicular to said front face and said mounting face, circumscribing said central axis;
• each of said plurality of outer sides having a forward cap mounting pad extending axially away from said mounting face in a direction opposite from said front face, wherein at least one of said forward cap mounting pads is attachable to one or more mounting brackets attachable to said vehicle;
• said forward cap having an inlet hole disposed about said central axis through said front face and said mounting face;
• an auxiliary power unit interface flange circumscribing said inlet hole and depending axially away from said mounting face in a direction opposite said front face;
• wherein said auxiliary power unit interface flange is capable of engaging said auxiliary power unit, and wherein said auxiliary power unit interface flange is capable of providing support for said auxiliary power unit;
• said aft cap comprising an aft cap inner face located perpendicular to said central axis;
• an aft cap outer face located on a side of said aft cap opposite said aft cap inner face;
• and
• a plurality of aft cap outer sides perpendicular to said central axis and circumscribing said central axis;
• each of said plurality of aft cap outer sides having an aft cap mounting pad extending axially away from said aft cap inner face along said central axis in a direction opposite from said aft cap outer face, wherein at least one of said aft cap mounting pads is attachable to one or more mounting brackets attachable to said vehicle;
• said aft cap having an exhaust hole disposed through said aft cap inner face and said aft cap outer face;
• said enclosure skin being attached to said plurality of forward cap mounting pads at a front enclosure end, and said enclosure skin being attached to one or more of said aft cap mounting pads at an aft enclosure end, wherein said auxiliary power unit is disposable within said enclosure.

A modular auxiliary power unit assembly comprising:

• an enclosure defined by a forward cap separated along a central axis from an aft cap by an enclosure skin;
• an auxiliary power unit disposed within said enclosure;
• said forward cap comprising a front face located perpendicular to said central axis;
• a mounting face located on a side of said forward cap opposite said front face;
• a plurality of forward cap outer sides perpendicular to said front face and said mounting face, circumscribing said central axis;
• each of said plurality of outer sides having a mounting pad extending axially away from said mounting face along said central axis in a direction opposite from said front face, wherein at least one of said mounting pads is attachable to one or more mounting brackets attachable to a vehicle;
• said forward cap having an inlet hole radially disposed about said central axis through said front face and said mounting face;
• an auxiliary power unit interface flange circumscribing said inlet hole and depending axially away from said mounting face in a direction opposite said front face;
• wherein said auxiliary power unit interface flange is capable of engaging an inlet to, and providing support for said auxiliary power unit;
• said forward cap further comprising at least one connection disposed on said forward cap to provide communication between said auxiliary power unit and one or more systems on said vehicle;
• said aft cap comprising an aft cap inner face located perpendicular to said central axis;
• an aft cap outer face located on a side of said aft cap opposite said aft cap inner face;
• and
• a plurality of aft cap outer sides perpendicular to said central axis and circumscribing said central axis;
• said aft cap having an exhaust hole radially disposed about said central axis through said aft cap inner face and said aft cap outer face;
• said enclosure skin being attached to said plurality of forward cap outer sides at a front enclosure end, and said enclosure skin being attached to one or more of said aft cap outer sides at an aft enclosure end.

A method of mounting an auxiliary power unit in a vehicle, comprising the steps of:

• A) attaching an auxiliary power unit to a modular installation kit to produce an auxiliary power unit assembly, the kit comprising a forward cap comprising at least one mounting pad, wherein said at least one mounting pad is attachable to one or more mounting brackets;
• and an auxiliary power unit interface flange attached to said forward cap and depending axially away from said forward cap, wherein said auxiliary power unit interface flange is capable of engaging said auxiliary power unit, and wherein said auxiliary power unit interface flange is capable of providing support for said auxiliary power unit;
• and
• B) attaching said auxiliary power unit assembly to said vehicle by attaching said one or more mounting brackets to said vehicle.