OUTBOARD MOTOR OR INBOARD UNIT SELF CONTAINED COOLING SYSTEM

SYSTEME DE REFROIDISSEMENT AUTONOME POUR MOTEURS HORS-BORD OU EN-BORD

English Abstract

Form 24 Sheet 2 of 5
ABSTRACT
The primary function of this invention is to maintain the opera-
tion of the cooling system in ZEBRA MUSSEL infested waters or an
other infested waters that a self contained cooling system is
necessary for proper cooling of an outboard motor or an inboard
outbourd unit (Which is sometimes referred to as a stern drive
unit.). The secondary advantage being, there is no need to remove
the cooling fluid for winter storage of a vessel if antifreeze
coolant is utilized.

Claims

CLAIM Sheet 4 of 5
The device allows the operator of an outboard motor or inboard
outboard unit the freedom of boating in infested waters without
the problem of damaging the engine due to over heating caused by a
plugged intake port.
The device also protects the owner against winter freezing cracks
in the engine block due to poor maintenance in preparing the drive
unit for winter storage if a suitable antifreeze mix is used for
the coolant.

Description

~ f~ 7
DISCLOSURE Sheet 3 of 5
Specification
(1) The invention relates to a self contained cooling system for
an outboard motor or an inboard outboard unit (Also known as a
stern drive unit.) to allow the operation of said unit in infested
waters.
(2) The present system being used can be blocked by ZEBRA MUSSEL
infestation or other infestation that is likely to grow on or in
the intake port, thereby blocking the flow of cooling water and
causing engine damage due to over heating.
Winter storage made easier if the heavy outboard or inboard
outboard unit does not require draining for such storage. This
can be accomplished by using an antifreeze mixture instead of
using normal water as a coolant
(3) The coolant is passed through a heat exchanger that is
located in the lower submerged section of the drive unit. This
heat exchanger is in direct contact with the water that the boat
is operating in and may require the addition of ooling finns to
increase the effective area of the heat exchange.
(4) FIGURE 1: Inboard / outboard unit side elevation showing the
proximity of the heat exchanger.
FIGURE 2: Heat Exchanger external view.
FIGURE 3: Outboard motor side/back elevation showing the
proximity of the heat exchanger.
This heat exchanger can either be internal in the
case of a new boat propulsion unit designed or can
be an external retrofit unit to accommodate
existing units. (The heat exchanger shown in
figures 1, 2 & 3 is the latter.
REFER TO FIGURES 1, 2, & 3 (on sheet 5)
1/ Heat Exchanger (Internal & external cooling fins if
necessary).
5 2/ Casketted existing intake, (Two sides of existing drive
unit) whether utilized for return coolant or not.
3/ Connecting hose (if required).
4/ Hinge
5/ Bolted flange.
6/ Coolant feed line (Hose where necessary).
7/ Coolant feed line (same as above) or possible coolant return
line if existing intakes are not utilized.
8/ Outdrive unit
9/ Transo~
10/ Internal combustion engine
11/ Outboard motor

Representative Drawing