Internal-combustion engines – Multiple cylinder
Patent
1988-12-16
1990-05-22
Okonsky, David A.
Internal-combustion engines
Multiple cylinder
123 52MB, F02M 910
Patent
active
049268023
ABSTRACT:
A manifold for a bank of four cylinders of an engine comprises four primary tracts each leading to a respective cylinder, and two secondary tracts each connected at a respective one of two branching points to a respective pair of primary tracts which lead to cylinders of which the combustion cycles are in antiphase. The two branching points are arranged contiguous to one another to form a decoupling chamber between which there is disposed a valve connecting the two branching points. The resonant frequency of the manifold can be changed by opening and closing the valve.
REFERENCES:
patent: 4722307 (1988-02-01), Okuno et al.
Bowman Timothy J.
Davidson William C.
Jordon Trevor A.
Morris Guy D.
Drouillard Jerome R.
Ford Motor Company
Okonsky David A.
Sadler Clifford L.
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