Outboard engine unit

摘要

An outboard engine unit capable of efficiently cooling the interior of an engine cover is disclosed. The outboard engine unit includes a cooling opening capable of guiding air to an interior from an upper part of the engine cover, a first intake channel having a first outlet open to an upper front end and communicating with the opening, a partition wall disposed so as to be oriented substantially in a perpendicular direction below the first outlet; and a second intake channel extending substantially in the perpendicular direction along a rear wall of the engine cover rearward of the partition wall. The outboard engine unit is configured so that air directed from the cooling opening to the interior of the engine cover is directed to the throttle unit via the second cooling air intake channel.

主权项

1. An outboard engine unit having an engine, an engine cover covering the engine, and a throttle unit in communication with an upper space in a rear-side interior of the engine cover,
wherein the outboard engine unit comprises:
a cooling opening, disposed in an upper part of the engine cover, for guiding air to an interior of the engine cover, the interior of the engine cover including a lower rear-side interior below the rear-side interior;a first intake channel having a first inlet communicating with the cooling opening and a first outlet open to an upper front end of the engine cover, the first outlet communicating with the lower rear-side interior of the engine cover, the first intake channel and extending from the first inlet to the upper front end of the engine cover along the upper part of the engine cover;a partition wall, disposed in a substantially vertical orientation below the first outlet, for guiding air directed out from the first outlet toward the lower rear-side interior of the engine cover; a rear duct disposed along a rear wall of the engine cover;
a second intake channel formed by the rear duct and the rear wall of the engine cover and extending substantially vertically along the rear wall of the engine cover rearwardly of the partition wall, the second intake channel having a second inlet communicating with the lower rear-side interior and a second outlet located at an upper end of the engine unit and communicating with the upper space for guiding the air from the lower rear-side interior of the engine cover into the upper space.