Electromagnetically-operable fluid injectors
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United States of America Patent
Stats
-
Nov 10, 1987
Grant Date -
N/A
app pub date -
Sep 23, 1985
filing date -
Mar 25, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromagnetically-operable fuel injector comprising a fuel chamber having an outlet nozzle and into which a solenoid core projects. A ball valve in the gap between the core and the nozzle orifice and movable towards and away from the core to seat and unseat a valve seat around the nozzle orifice by energization of an electromagnetic circuit. Compensating structure is provided which respond to changes in temperature by changing a physical characteristic. The compensating structure function either to change the length of the core or to adjust the position of the valve seat relative to the core such that any tendency for fuel metering characteristics of the injector to be changed by a change in temperature in the injector is countered whereby operation of the injector to inject fuel is substantially independent of temperature change.
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