Internal-combustion piston driving apparatus having a decompress

Details Internal-combustion piston driving apparatus having a decompress Internal-combustion piston driving apparatus having a decompress

1988-10-21

1990-04-03

Bell, Paul A.

Elongated-member-driving apparatus

Explosive-type driving means

With plunger

B25C 104, B25C 108

Patent

active

049133314

ABSTRACT:
In an internal-combustion piston driving apparatus comprising a housing, a cylinder cover fixed to the housing, a cylinder slidably provided to the housing, a piston reciprocally slidably provided in the cylinder, a combustion chamber defined by the housing, the cylinder, and the piston, a fuel supplying device for supplying fuel to the combustion chamber, and an ignition control device for producing a high voltage to ignite the fuel supplied to the combustion chamber, piston position detector for detecting a position of the piston is provided at the wall of the cylinder between top dead point and bottom dead point of the piston. Besides, a decompression channel is provided so as to connect the combustion chamber placed upper than the top dead point with atmosphere for exhausting a combusted gas in the combustion chamber when the piston passes the piston position detector. The decompression channel is opened and closed by means of slide of the cylinder. In addition, a suction valve is provided to the cylinder cover to be placed lower than bottom dead point of the piston whereby the piston is returned by means of atmospheric pressure after a power stroke of said piston.

REFERENCES:
patent: 4403722 (1983-09-01), Nikolich
patent: 4483473 (1984-11-01), Wagdy
patent: 4717060 (1988-01-01), Cotta
patent: 4721240 (1988-01-01), Cotta
patent: 4773581 (1988-09-01), Ohtsu et al.

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