Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Reexamination Certificate
2006-03-14
2006-03-14
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
Reexamination Certificate
active
07011078
ABSTRACT:
A two-stroke internal combustion engine (1) is provided with one pair or plural pairs of C-shaped scavenging passageways (31, 32) of a reverse flow system where scavenging inlet ports (31a) as well as scavenging outlet ports (31b,32b) are both opened to a cylinder bore (10a), wherein a scavenging introducing passageway (40) for introducing an air-fuel mixture (K) from a crank chamber (18) into the scavenging inlet ports (31a) is provided between the cylinder bore and the piston adapted to reciprocatively move up and down in the cylinder bore (10a), and an effective opening area of the scavenging inlet ports (31a) is gradually decreased due to the piston (20) in the course of descending stroke of the piston (20).
REFERENCES:
patent: 6279521 (2001-08-01), Ishida et al.
Patent Abstract of Japan, Publication No. 57-140519 dated Aug. 31, 1982, Application No. 56-025782, dated Feb. 23, 1981, for Two-Cycle Engine, Applicant: Kawasaki Heavy Ind. Ltd., of Fujimoto Kan et al.
Kamo Keita
Matsuo Kentaro
Tsunoda Hidekazu
Yamaguchi Shiro
Baker & Botts L.L.P.
Gimie Mahmoud
Harris Katrina B.
Kioritz & Corporation
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