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US 10,648,378 B2Granted
Engine dipstick
AssigneeFord Global Technologies, LLC
InventorsXavier Demeulenaere, Graham Slaughter, Mark Michel
Life of this patent
Estimating the term…
Abstract
An engine with an engine casing and a dipstick. The dipstick extends into the engine casing and has a free end. The design of the free end may be selected such that the natural frequency of the dipstick does not resonate with the operating frequency of the engine. The dipstick may also be oriented such that the free end does not contact the engine.
Claims18
An engine comprising an engine casing and a dipstick,
- the dipstick extending into the engine casing when the dipstick is installed to the engine casing,
- the engine casing having a plurality of projections positioned to contact and constrain the dipstick,
- a free end of the dipstick defined as an unconstrained length below a projection closest to an oil level extending from a wall of an oil pan, and
- the projection closest to the oil level deflecting the free end of the dipstick away from the wall of the oil pan such that a lowest natural frequency of the free end of the dipstick is above a highest operational frequency of the engine.
1 more element
An engine including:
- an engine casing;
- a dipstick configured to extend into the engine casing;
- a plurality of contact points positioned to contact the dipstick;
- one of the contact points positioned on the engine casing to deflect the dipstick;
- and
- a free end of the dipstick below a contact point deflected in a direction extending away from a wall of an oil pan by a contact point closest to an oil level contacting a side of the dipstick facing the wall of the oil pan.
3 more elements
An engine including:
- an engine casing;
- a dipstick configured to extend into the engine casing;
- the engine casing having one or more contact points positioned to contact the dipstick;
- a first contact point nearest an oil level extending in a first direction away from a wall of an oil pan to deflect the dipstick in the first direction;
- and
- a free end of the dipstick being unconstrained below the first contact point and the first contact point deflecting the free end away from the wall of the oil pan.
3 more elements
Dependencies are inferred from the claim text.