Intake system for a four-cycle engine powering an outboard motor

Details Intake system for a four-cycle engine powering an outboard motor Intake system for a four-cycle engine powering an outboard motor

1997-06-10

1999-08-24

McMahon, Marguerite

Internal-combustion engines

Intake manifold

For engine having radiating cylinders

123 544, F02B 7522

Patent

active

059412054

ABSTRACT:
An intake system for an engine arranged to be positioned within a cowling of an outboard motor for powering a water propulsion device of the motor is disclosed. Preferably, the engine is of the "V"-type, having first and second banks defined by first and second cylinder heads connected to a cylinder block, and having a crankcase or second end positioned opposite the heads and facing the watercraft. Each bank contains at least one combustion chamber, and the banks define a valley extending therebetween along a length of the engine. An intake system is positioned at the second end of the engine and comprises a surge tank corresponding to each bank, an intake passage leading from each surge tank to the cylinders of its respective bank, and a throttle body having an air inlet and a branch passage leading to each surge tank. An engine auxiliary component is positioned above or below the throttle body of the intake system.

REFERENCES:
patent: 4967704 (1990-11-01), Imaeda
patent: 5005536 (1991-04-01), Suzuki et al.
patent: 5016579 (1991-05-01), Suzuki et al.
patent: 5488939 (1996-02-01), Nakai et al.
patent: 5513606 (1996-05-01), Shibata
patent: 5673655 (1997-10-01), Mishima
patent: 5765519 (1998-06-01), Watanabe

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