Active drain liquid trap for fuel system
AssigneeEaton Corporation
InventorsSteven Lee Ambrose, Vaughn K. Mills
Life of this patent
Estimating the term…
Abstract
An active drain liquid trap configured for use with a fuel tank system and constructed in accordance to one example of the present disclosure includes a trap body, a float and a pilot. The trap body defines a first inlet, a second inlet and an outlet. The first inlet is fluidly connected to a fuel pump. The second inlet is fluidly connected to a vapor line. The float is rotatably mounted about a float pivot. The pilot moves between an open and closed position. Rotation of the float causes the pilot to be urged into an open position and fluid to be drained from the trap body through the outlet.
Claims17
An active drain liquid trap configured for use with a fuel tank system, the active drain liquid trap comprising:
- a trap body that defines a first inlet, a second inlet and an outlet, the first inlet fluidly connected to a fuel pump, the second inlet fluidly connected to a vapor line;
- a float rotatably mounted about a float pivot;
- a pilot that moves between an open and closed position;
- a plate biased against a first seat by a first biasing member, the plate having a plate seal and defining an orifice, the plate seal sealingly engaging the first seat in a closed position upon equalized pressure on opposite sides of the plate;
- and
- wherein rotation of the float causes the pilot to be urged into an open position and fluid to be drained from the trap body through the outlet.
An active drain liquid trap configured for use with a fuel tank system, the active drain liquid trap comprising:
- a trap body that defines a first inlet, a second inlet and an outlet, the first inlet fluidly connected to a fuel pump, the second inlet fluidly connected to a vapor line;
- a float rotatably mounted about a float pivot;
- a pilot that moves between an open and closed position, wherein a first portion of the pilot is configured to be engaged by the float and a second portion of the pilot includes a pilot seal member configured to sealingly engage a pilot seat;
- a plate biased against a first seat by a first biasing member, the plate having a plate seal and defining an orifice, the plate seal sealingly engaging the first seat in a closed position upon equalized pressure on opposite sides of the plate;
- and
- wherein rotation of the float causes the pilot to be urged into an open position and fluid to be drained from the trap body through the outlet.
An active drain liquid trap configured for use with a fuel tank system, the active drain liquid trap comprising:
- a trap body that defines a first inlet, a second inlet and an outlet, the first inlet fluidly connected to a fuel pump, the second inlet fluidly connected to a vapor line;
- a float rotatably mounted about a float pivot;
- a pilot that moves between an open and closed position;
- a check valve that is normally biased toward a check valve seat by a check valve biasing member and wherein the check valve is urged against the bias of the check valve biasing member and away from the check valve seat upon rotation of the float allowing liquid fuel to be drained out the outlet;
- and
- wherein rotation of the float causes the pilot to be urged into an open position and fluid to be drained from the trap body through the outlet.
Dependencies are inferred from the claim text.