Engine

Details Engine Engine

1998-11-02

1999-12-21

Nguyen, Hoang

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

123 593, 1231901, F16D 3102

Patent

active

060033126

ABSTRACT:
In accordance with this invention a vapor engine is provided having a first piston of a given diameter and a second piston having a larger diameter than the first piston. Walls are provided within which the pistons travel so as to define a first piston space and a second piston space. An apparatus are provided for connecting the first and the second piston to a power output. A rotary valve, having passageways therein for communicating with the first piston space and with the second piston space and for receiving vapor under pressure from an input source and for discharging exhaust vapor from the engine, is a part of the combination. Another apparatus is provided for positioning the rotary valve in accordance with the positioning of the first and second piston, so that during a first phase power stroke relative to the first piston, the pressure vapor power input to the first piston space from its passageway in the rotary valve ends only at the end of the first piston power stroke while exhausting discharge vapor from the second piston space all during the power stroke of the first piston, and so that during a second phase power stroke relative to the second piston vapor under pressure is applied to the second piston by a passageway in the rotary valve, and thus vapor under pressure flows from the first piston space to the second piston space.

REFERENCES:
patent: 1731015 (1929-10-01), Lehman
patent: 1754509 (1930-04-01), Gilbert
patent: 1755976 (1930-04-01), Williams
patent: 3693351 (1972-09-01), Minkus
patent: 3885387 (1975-05-01), Simington
patent: 4171618 (1979-10-01), Aegerter

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