Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1983-07-14
1985-05-14
Lall, Parshotam S.
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
123573, 137114, F02B 4708
Patent
active
045165530
ABSTRACT:
An inverter apparatus for producing an increasing vacuum effect in response to a decreasing vacuum field. A piston is axially movable within a cylindrical bore. The piston has a first surface exposed to atmospheric pressure. A spring biases the piston in a direction opposed to the direction of movement which would be produced by atmospheric pressure on the second surface. A fluid inlet passageway extends through the cylinder and opens into the cylindrical bore, the piston having an axially extending side wall facing the cylindrical bore. An orifice formed in that side wall and an outlet passageway located at one end of the orifice connect that end with the chamber having the vacuum acting on the first surface of the piston. The axially extending orifice is so located in the side wall of the piston as to provide a decreasing restriction to flow of fluid from the first passageway through the orifice to the outlet with decreasing vacuum.
REFERENCES:
patent: 1981891 (1934-11-01), Woermann
patent: 3099282 (1963-07-01), Miller et al.
patent: 3545479 (1970-12-01), Loe
patent: 4458712 (1984-07-01), Stevenson
Lall Parshotam S.
Owen, Wickersham & Erickson
Wolfe W. R.
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