Method and device for reducing intake noises and mechanical vibr

Details Method and device for reducing intake noises and mechanical vibr Method and device for reducing intake noises and mechanical vibr

1981-07-14

1984-09-25

Burns, Wendell E.

Internal-combustion engines

Two-cycle

Rear compression

123 74R, F02B 3304

Patent

active

044730390

ABSTRACT:
The invention relates to a method and an apparatus for reducing to a minimum the predominant full load noise of port-controlled, two-stroke internal combustion engines by constructing the lower suction port boundary and the lower piston boundary, so that there is a gradual port opening during the upward movement of the piston and a gradual port closing during its downward stroke.

REFERENCES:
patent: 1900133 (1933-03-01), Schaeffers

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