Internal-combustion engines – Intake manifold – For engine having radiating cylinders
Patent
1996-08-30
1998-01-27
Okonsky, David A.
Internal-combustion engines
Intake manifold
For engine having radiating cylinders
12318453, F02M 3510
Patent
active
057112614
ABSTRACT:
An inlet manifold system particularly adapted for a "V-8" to "V-16" Type internal combustion engine. Such an engine has a first and a second bank of cylinders.
First and second elongated secondary manifolds disposed substantially parallel to and above the respective bank of cylinders;
A plurality of substantially parallel, spaced apart, demand runners joined to each respective secondary manifold along its length, each demand runner extending from the secondary manifold to a cylinder in the opposite bank of cylinders and in fluid connection with the secondary manifold and the cylinder.
A plurality of substantially parallel, spaced apart, supply runners joined to each respective secondary manifold along its length and in fluid connection therewith.
The demand runners and the supply runners are connected to the secondary manifolds such that each pair of adjacent spaced apart demand runners has an supply runner therebetween. Another embodiment of the present invention provides for segmenting the secondary manifolds with flapper valves pivotally mounted in the plenum to dedicate a supply runner with a specific demand runner, the result of which is an increase in length of the overall runner to produce an increase in low end torque when an engine operates at relatively low rpms.
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