Outboard marine engines having a bedplate and cover assembly

摘要

An outboard marine engine has an engine block; a crankcase on the engine block; a crankshaft disposed in the crankcase for rotation about a crankshaft axis; a cover on the crankcase; a bedplate disposed between the engine block and the cover, the bedplate having a plurality of bearings for supporting rotation of the crankshaft; and a cooling water jacket that extends parallel to the crankshaft axis along a radially outer portion of the plurality of bearings. The cooling water jacket carries cooling water for cooling the plurality of bearings and at least one oil drain-back area is located adjacent to the cooling water jacket. The at least one oil drain-back area drains oil from the crankcase.

主权项

1. An outboard marine engine comprising:
an engine block; a crankcase on the engine block; a crankshaft disposed in the crankcase for rotation about a crankshaft axis; a cover on the crankcase; a bedplate disposed between the engine block and the cover, the bedplate having a plurality of bearings for supporting rotation of the crankshaft; a cooling water jacket that extends parallel to the crankshaft axis along a radially outer portion of the plurality of bearings, the cooling water jacket carrying cooling water for cooling the plurality of bearings; and at least one oil drain-back area located adjacent to the cooling water jacket, the at least one oil drain-back area draining oil from the crankcase; wherein the at least one oil drain-back area comprises separate first and second oil drain-back areas; and wherein the cooling water jacket is located between the first and second oil drain-back areas.