Intake vacuum controlled manifold vacuum spoiler

Patent · Tue Jul 06 00:00:00 EDT 1976

OSTI ID:7263998

Dolfi, Sr, J J

A valve body is described having a bore 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, 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 passage 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.

• Assignee: TIC; ERA-02-003407; EDB-76-092208
• Patent Number(s): US 3967605
• OSTI ID: 7263998
• Resource Relation: Patent File Date: Filed date 21 May 1974
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
FUEL SYSTEMS
POLLUTION CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
FUEL-AIR RATIO
OPERATION
PRESSURE DEPENDENCE
VALVES
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
330603* - Vehicle Design Factors- Engine System
330700 - Advanced Propulsion Systems- Emission Control