Exhaust control system

Details Exhaust control system Exhaust control system

1984-10-30

1986-11-11

Feinberg, Craig R.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 65V, F02D 3904

Patent

active

046215964

ABSTRACT:
An exhaust control system for a 2-cycle engine having at least one combustion cylinder with a longitudinal axis comprises a main exhaust passage and an exhaust sub-passage communicating with the cylinder through respective main and sub-exhaust ports. The sub-port is located laterally of and in spaced relationship to the main exhaust port and further lies in a common plane arranged perpendicular to the cylinder axis. A control means is included which varies the degree of opening of the exhaust sub-passage in accordance with engine speed whereby timing of the ports is not altered.

REFERENCES:
patent: 948336 (1910-02-01), Moore
patent: 1514476 (1924-11-01), Still
patent: 2401858 (1946-06-01), Clark
patent: 2720872 (1955-10-01), Yokoi
patent: 4121552 (1978-10-01), Mithuo et al.
patent: 4285311 (1981-08-01), Iio
patent: 4368703 (1983-01-01), Shibata

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