Intake manifold for outboard motor

Details Intake manifold for outboard motor Intake manifold for outboard motor

1998-08-26

2000-08-29

Wolfe, Willis R.

Internal-combustion engines

Intake manifold

For in-line engine

12318461, F02M 3510, B63H 2126

Patent

active

061092312

ABSTRACT:
An outboard motor having a multi-cylinder four-cycle, internal combustion engine as a power plant. An improved crankcase ventilating system is provided wherein the crankcase ventilating gases follow a circuitous path through the crankcase chamber, camshaft chambers and then to the intake system through an extended conduit passing over the exhaust manifold so as to reduce the emissions of hydrocarbons. The intake system is designed to preclude uneven distribution of the ventilating gases. The intake system also is comprised of a plenum device, a plurality of runners and throttle bodies and an intake manifold that are attached as a unit to the rest of the engine body. Portions of this unit are formed from a synthetic resin.

REFERENCES:
patent: 4776313 (1988-10-01), Freismuth et al.
patent: 5273010 (1993-12-01), Elder
patent: 5513606 (1996-05-01), Shibata
patent: 5875758 (1999-03-01), Fujita
patent: 5899197 (1999-05-01), Watanabe et al.

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