Differential piston and valving system for detonation device

Details Differential piston and valving system for detonation device Differential piston and valving system for detonation device

1985-02-21

1987-05-19

Feinberg, Craig R.

Internal-combustion engines

Free piston

Single chamber; one piston

123292, F01B 7100

Patent

active

046658688

ABSTRACT:
A purging and recharging system improves the repeating of detonations from a detonation device 10 having a detonation chamber 20 separated from an ignition chamber 25 by a detonation plate 22 having an opening 23 through which a flame jet can pass from ignition chamber 25 to detonation chamber 20. A differential piston 30 driven by a detonation in a differential cylinder 31, 32 around detonation chamber 20 affords a fluid passageway between differential piston 30 and detonation chamber 20. On a power stroke, differential piston 30 compresses recharging air and draws in cooling and exhaust purging air to surround detonation chamber 20. On a return stroke, differential piston 30 forces cooling and purging air into detonation chamber 20 and then admits compressed recharging air into detonation chamber 20. A check valve 55 on the detonation side of the opening in detonation plate 22 admits fluid and flame from ignition chamber 25 into detonation chamber 20 during ignition and blocks backflow of fluid or flame from detonation chamber 20 into ignition chamber 25 during detonation.

REFERENCES:
patent: 957017 (1910-05-01), Vanderlip
patent: 1653825 (1927-12-01), Salves
patent: 3042008 (1962-07-01), Liesse
patent: 4365471 (1982-12-01), Adams
patent: 4377991 (1983-03-01), Liesse

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