Engine throttle body hydrocarbon emissions reduction system
AssigneeFord Global Technologies, LLC
InventorsBrendan F. Diamond, Keith Weston, Brent Alan Hall, Brandon Roberts
Life of this patent
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Abstract
A throttle body for an engine includes a throttle body housing, a throttle body plate supported by and rotatable within the throttle body housing, and a tab carried by the throttle body housing and movable between a first position in which the tab is in direct contact with the throttle body plate to prevent rotation of the throttle body plate and maintain the throttle body plate in a closed position, and a second position in which the tab is not in direct contact with the throttle body plate to permit rotation of the throttle body plate.
Claims20
A throttle body for an engine, comprising:
- a throttle body housing defining a bore;
- a throttle body plate supported by and rotatable within the throttle body housing;
- and
- a tab carried by the throttle body housing and movable between (i) a first position in which the tab protrudes into the bore adjacent to the throttle body plate and is in direct contact with the throttle body plate to prevent rotation of the throttle body plate and maintain the throttle body plate in a closed position and (ii) a second position in which the tab is not in direct contact with the throttle body plate to permit rotation of the throttle body plate.
A throttle body for an engine comprising:
- a throttle body housing having a wall defining a bore;
- a throttle body plate supported by the wall and rotatable within the bore;
- and
- a rotary threaded sleeve engaged with the wall around a circumference of the bore, and including a tab configured to move axially, within the bore, toward the throttle body plate to engage the throttle body plate responsive to rotation of the rotary threaded sleeve in a first direction and axially away from the throttle body plate to disengage the throttle body plate responsive to rotation of the rotary threaded sleeve in a second direction opposite to the first direction.
A method for controlling an engine:
- responsive to the engine being shut off, commanding movement of a tab, carried by a throttle body housing, within a bore defined by the throttle body housing to directly engage a throttle body plate to prevent rotation of the throttle body plate and establish a seal between the throttle body plate and the throttle body housing by protruding into the bore adjacent to the throttle body plate, and
- responsive to the engine being turned on, commanding movement of the tab within the bore to disengage the throttle body plate to permit rotation of the throttle body plate within the bore.
Dependencies are inferred from the claim text.