Four-stroke V-engine with central exhaust and intake manifolds

Details Four-stroke V-engine with central exhaust and intake manifolds Four-stroke V-engine with central exhaust and intake manifolds

1988-07-20

1990-06-12

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

123 55VE, F02M 3500

Patent

active

049323679

ABSTRACT:
A V-type four-stroke cycle internal combustion engine is provided with an exhaust manifold and an air intake manifold disposed in the valley of the V-engine, and arranged one above the other. The exhaust from the cylinders passes through exhaust passages formed in the cylinder heads which discharge exhaust into the valley of the V-engine for collection in a central exhaust cavity provided in the exhaust manifold. A single exhaust discharge outlet is in communication with the central exhaust cavity for discharging exhaust therefrom. The air intake manifold includes a series of air intake passages which supply air to the cylinders from within the valley of the V-engine. A series of cylinder head intake passages are provided with openings facing the valley of the V-engine for receiving air therefrom. The exhaust manifold is preferably water jacketed for cooling exhaust prior to its discharge from the engine, and the exhaust passages provided in the cylinder heads are also water jacketed. In a carbureted system, the water warmed by the exhaust acts to pre-heat air passing through the cylinder head air passages prior to its entry into the cylinders, which improves low-speed performance of the engine. The push rods are either disposed in a conventional arrangement wherein the cam shaft is located in the apex of the V-shape formed by the push rods, or may be disposed in an overhead arrangement when an overhead camshaft configuration is employed.

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"Plymouths with Ram Induction", 1959, p. 305, Oct. 14, 1959.
"The Scientific Design of Exhaust and Intake Systems", Philip H. Smith, 1962.

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