Fuel injection pump for an internal combustion engine comprising a device for adjusting the instant of injection fuel delivery
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United States of America Patent
Stats
-
Nov 10, 1987
Grant Date -
N/A
app pub date -
Apr 13, 1982
filing date -
Apr 16, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Internal combustion engine fuel injection pump of the type comprising an injection piston having a head with a helical ramp and provided with a device for adjusting in time the beginning of the fuel injection delivery. The adjusting device comprises a valve for closing and opening a bypass passage adapted to connect the said admission chamber to a space communicating with the chamber filling fuel source, and a system for the control of the valve including a control device for closing the valve depending on the angular position of a rotary member of the engine, such as a crankshaft, and for opening the valve in response to a partial vacuum created in the admission chamber by the suction stroke of the injection piston.
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