Back to results
US 2022/0364525 A1Published application
Oil drain back seal and systems, assemblies, kits, and methods thereof
AssigneeCaterpillar Inc.
InventorsSuresh B. CHENNAGOWNI, Mandar A. JOSHI, Benjamin D. STOLTZFUS, Pradeep CHAPAGAIN, Gregory O. POTTS
Life of this patent
Estimating the term…
Abstract
A funnel or drain back seal and systems, assemblies, components, kits, and methods thereof can comprise a body defining an opening that extends from a top of the body to a bottom of the body; a head portion that extends outward from the top of the body; and a flap or lip that extends outward from the bottom of the body. The opening can be adapted to pass draining oil from the top of the body to the bottom of the body for supply into an engine block.
Claims20
An internal combustion engine, comprising:
- an engine block, the engine block including a drain back hole;
- a funnel seal including a body defining a longitudinal opening from a top of the body to a bottom of the body, a head portion extending radially outward from the top of the body, and a blow-back lip extending radially outward from the bottom of the body, wherein the funnel seal is disposed in the drain back hole;
- a cylinder head;
- a head gasket positioned between the engine block and the cylinder head, the head gasket having an opening through which the funnel seal is provided into the drain back hole such that the head portion of the funnel seal sits in the opening of the head gasket and has at least a portion that is flush with the head gasket;
- a shim gasket positioned between the engine block and the head gasket;
- and
- a spacer plate positioned between the head gasket and the shim gasket,
- wherein the funnel seal is configured to divert oil draining from the cylinder head back into the engine block, and
- wherein the blow-back lip is configured to shield against blow-by material moving in a direction opposite a direction in which the oil drains from the cylinder head into the engine block due to crank case pressure.
6 more elements
An engine kit comprising:
- a plurality of funnel seals configured to be respectively provided in drain back holes of an engine block, each of the funnel seals including a body defining a longitudinal opening from a top of the body to a bottom of the body, a head portion extending outward from the top of the body, and a lip extending outward from the bottom of the body;
- and
- a head gasket configured to be disposed on the engine block and interface with the funnel seals.
A drain back seal comprising:
- a body defining an opening that extends from a top of the body to a bottom of the body;
- a head portion extending outward from the top of the body;
- and
- a flap extending outward from the bottom of the body,
- wherein the opening is adapted to pass draining oil from the top of the body to the bottom of the body for supply into an engine block.
2 more elements
Dependencies are inferred from the claim text.