Engine front cover with rotational support insert
View Patent ↗An engine front cover assembly includes a plastic engine cover. A metal insert is secured within the plastic engine cover and defines a bore configured to receive a rotating engine component. A seal is located in a seal seat defined within the bore of the metal insert and configured to sealingly engage the rotating engine component. The metal insert is overmolded within the plastic engine cover and serves as a datum point to properly locate the seal relative to the rotating engine component.
1. An engine cover assembly comprising:
a plastic engine cover defining an aperture configured to receive a rotatable engine component;
a metal insert including an annular body defining a bore configured to receive the rotatable engine component and having a planar portion extending radially from an outer perimeter of the annular body, the metal insert defining a monolithic body including the annular body and the planar portion overmolded within the plastic engine cover, wherein the monolithic body of the metal insert includes at least a pair of mounting apertures therein for securing the metal insert directly to an engine structure; and
a seal located in a seal seat defined within the bore of the metal insert and configured to sealingly engage the rotatable engine component.
2. The engine cover assembly of claim 1 , wherein the rotatable engine component includes a crankshaft.
3. The engine cover assembly of claim 1 , wherein the planar portion of the metal insert includes a web structure of reinforcing ribs.
4. The engine cover assembly of claim 3 , wherein the plastic engine cover is injection molded around the planar portion of the metal insert.
5. The engine cover assembly of claim 4 , wherein the plastic engine cover defines ribs at locations corresponding to the reinforcing ribs of the metal insert.
6. The engine cover assembly of claim 1 , wherein the plastic front cover is injection molded around at least a portion of the metal insert.
7. The engine cover assembly of claim 1 , wherein the pair of mounting apertures are on opposite sides of the bore.
8. An engine assembly comprising:
an engine block supporting a rotatable crankshaft;
a plastic engine cover defining an aperture configured to receive the crankshaft;
a metal insert over-molded within the plastic engine cover and defining a bore configured to receive the crankshaft, the metal insert defining a monolithic body including an annular body defining the bore and having a planar portion extending radially from an outer perimeter of the annular body wherein the planar portion of the metal insert includes a web structure of reinforcing ribs extending therefrom with ends of the reinforcing ribs connected to the annular body of the metal insert; and
a seal located in a seal seat defined within the bore of the metal insert and configured to sealingly engage the crankshaft.
9. The engine assembly of claim 8 , wherein the plastic engine cover is injection molded around the metal insert.
10. The engine assembly of claim 9 , wherein the plastic engine cover defines ribs at locations corresponding to the reinforcing ribs of the metal insert.
11. The engine assembly of claim 8 , wherein the metal insert includes at least a pair of mounting apertures therein for securing the metal insert directly to the engine block.
12. The engine assembly of claim 11 , wherein the pair of mounting apertures are on opposite sides of the bore.