Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-05-21
1976-07-06
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123119D, 137480, 137526, F02M 3300
Patent
active
039676056
ABSTRACT:
A valve body having a bore formed therethrough defining an air inlet at one end and including a diametrically enlarged counterbore at the other end. The outer end of the counterbore is closed by means of a removable end wall having a small diameter opening formed therethrough and a piston is slidable in the counterbore and includes a shank portion coaxial therewith longitudinally reciprocal in the bore. A compression spring is disposed between the end wall and the piston and yieldingly biases the latter toward a position seated in the inner end of the counterbore. The valve body includes a lateral outlet bore or passage whose inner end opens into the first-mentioned bore intermediate the opposite ends thereof and the outer end of the lateral bore has one arm of a tubular T-fitting secured therein, the other two arms of the tubular T-fitting being adapted to be interposed in a positive crankcase ventilating hose. Further, a vent passsage communicates the inner end of the counterbore with the lateral bore and the small diameter passage or bore formed through the end wall is adapted to be communicated with a source of manifold vacuum of an internal combustion engine, whereby in response to increases in manifold vacuum the piston will be drawn toward the end wall against the biasing action of the compression spring in order to move the end of the piston shank remote from the piston out of registry with the inner end of the lateral bore and thereby establish communication between the inlet end of the bore in which the piston stem is reciprocal with the inner end of the lateral bore.
REFERENCES:
patent: 2152028 (1939-03-01), Church
patent: 3166061 (1965-01-01), Weiser
patent: 3594020 (1971-07-01), Ehlert
patent: 3809035 (1974-05-01), Winton
patent: 3809127 (1974-05-01), Gilbert
patent: 3810484 (1974-05-01), Martini
patent: 3820518 (1974-06-01), Dolfi, Sr.
Jacobson Harvey B.
Liles James D.
Myhre Charles J.
O#Brien Clarence A.
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