Outboard marine engines having gearcase struts with flow separators

摘要

An outboard marine engine comprises an anti-ventilation plate; a torpedo housing that is disposed below the anti-ventilation plate; and a gearcase strut that extends from the anti-ventilation plate to the torpedo housing. The gearcase strut has a leading end, a trailing end, and opposing outer surfaces that extend from the leading end to the trailing end. A flow separator is on each outer surface. The flow separator is located closer to the trailing end than the leading end and causes flow of water across the gearcase strut to separate from the outer surface.

主权项

1. An outboard marine engine comprising:
an anti-ventilation plate; a torpedo housing that is disposed below the anti-ventilation plate; a gearcase strut that extends from the anti-ventilation plate to the torpedo housing, wherein the gearcase strut has a leading end, a trailing end, and opposing outer surfaces that extend from the leading end to the trailing end; and a flow separator on each of the outer surfaces, wherein the flow separator is located closer to the trailing end than the leading end and causes flow of water across the gearcase strut to separate from the outer surface; wherein each flow separator comprises a protrusion that extends from the outer surface; wherein the protrusion comprises at least one edge; and wherein the at least one edge comprises a leading edge that faces the leading end of the gearcase strut.