Two-stage valve for feeding air to injectors of an internal combustion engine
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United States of America Patent
Stats
-
Mar 12, 1996
Grant Date -
N/A
app pub date -
Apr 5, 1995
filing date -
Apr 6, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A piston within the body of the valve is connected to an actuator and is integral with stops. After a first stroke of the piston from its position against the first seat, the first stops entrain second stops integral with a second piston, to entrain this with the first piston over a second stroke, from the position of application of the second piston to its seat. This feeds air-assisted injectors through the outlet over the first stroke, and in addition, over the second stroke to admit air through the outlet bypassing a throttle valve. Control of a single actuator allows the airflow to be regulated through each of the two outlets in succession.
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