Scavenge control system

Details Scavenge control system Scavenge control system

1990-04-30

1991-07-23

Wolfe, Willis R.

Internal-combustion engines

Two-cycle

Rear compression

123 73PP, F02B 3344

Patent

active

050334190

ABSTRACT:
To improve control of the scavenging in accordance with the load and speed conditions in a two-stroke internal combustion engine with scavenge passages which open into the interior of the cylinder and an outlet passage and with scavenge ports and an outlet port governed by the piston of said internal-combustion engine, the present invention provides that communication with said scavenge passages is governed by an electromagnetically unlocking pressure-controlled valve, which is positioned in a passageway section and actuation of which within the opening periods of the scavenge ports, blocks the flow of the scavenging agent to the individual scavenge ports to the effect that the period of scavenging is timed relative to the load and speed conditions under which the internal-combustion engine is working.

REFERENCES:
patent: 3269689 (1966-08-01), Lee
patent: 3370305 (1968-02-01), Goott et al.
patent: 4089348 (1978-05-01), Yoshida et al.
patent: 4383641 (1983-05-01), Shreve
patent: 4388895 (1983-06-01), Boyesen
patent: 4585209 (1986-04-01), Aine et al.
patent: 4690372 (1987-09-01), Thiebaud
patent: 4748944 (1988-06-01), Iida et al.
patent: 4879976 (1989-11-01), Boyesen

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