Two stroke engine having exhaust timing control valve means

Details Two stroke engine having exhaust timing control valve means Two stroke engine having exhaust timing control valve means

1981-09-30

1983-06-21

Burns, Wendell E.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123323, F02B 7502, F02D 906

Patent

active

043888941

ABSTRACT:
A two stroke engine having an exhaust port formed in the cylinder wall. At the upper portion of the exhaust port, there is provided a rotary type exhaust timing control valve which is adapted to be actuated by an electric servomotor to control the exhaust timing in accordance with the engine speed. A control circuit is provided for controlling a power supply to the servomotor in accordance with the engine speed and the position of the valve. A timer switch is provided for providing a power supply to the control circuit for a certain time after the engine ignition switch is turned off so that the valve is moved to the retracted position after the engine is stopped. As the valve is thus moved to the retracted position, carbon deposits on the valve is scraped off by a scraping edge formed in the cylinder.

REFERENCES:
patent: 4121552 (1978-10-01), Mithuo et al.
patent: 4202297 (1980-05-01), Oku et al.
Japanese Patent Publication Disclosure No. 54-158514 dated Dec. 14, 1979, of Application No. 53-66676 filed Jun. 5, 1978, "Exhaust Timing Control Device of Two-Stroke Engine".

Affiliated with

Also associated with

Rating

Two stroke engine having exhaust timing control valve means does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two stroke engine having exhaust timing control valve means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two stroke engine having exhaust timing control valve means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2106518