Outboard engine system

Details Outboard engine system Outboard engine system

2007-05-23

2010-06-29

Venne, Daniel V (Department: 3617)

Marine propulsion

Screw propeller

Having transmission

C440S076000, C440S086000

Reexamination Certificate

active

07744435

ABSTRACT:
An outboard engine system includes: a casing coupled to a swivel case via a swivel shaft; an engine mounted in an upper part of the casing such that a crankshaft of the engine is vertically arranged and a cylinder block of the engine faces in a direction opposite to the swivel shaft; a torque converter; a vertically arranged output shaft connected to the crankshaft through the torque converter; a horizontally arranged propeller shaft provided below the output shaft; and a forward-reverse shifting gear mechanism for providing a connection between the output shaft and the propeller shaft; the torque converter, the output shaft, the propeller shaft and the forward-reverse shifting gear mechanism being disposed in the casing. The crankshaft and the torque converter which is coaxially connected to a lower end of the crankshaft are disposed above the swivel shaft; and the torque converter and the output shaft which is disposed behind the swivel shaft are connected to each other via a transmission device. Thus, it is possible to minimize a bending moment which the swivel shaft receives due to the weight of the engine and the torque converter, in the case where the torque converter is used in the outboard engine system, thereby providing an excellent steering performance.

REFERENCES:
patent: 3407600 (1968-10-01), Meyer
patent: 7458867 (2008-12-01), Matsuda et al.
patent: 7503817 (2009-03-01), Ide et al.
patent: 7530868 (2009-05-01), Matsuda et al.

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