Common rail fuel injection system
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United States of America Patent
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Jul 28, 1992
Grant Date -
N/A
app pub date -
Jul 16, 1990
filing date -
Jul 16, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A common rail fuel system is described which consists primarily of a high-pressure fuel pump, nozzles and a rail or rails having a substantially constant rail pressure situated between the fuel pump and the nozzles, the necessary connecting fuel lines and electronic control system. The pump is constructed to add leakage fuel to each stroke output without the necessity for routing this leakage fuel through the primary supply. This reduces the total amount of fuel pumped and improves metering accuracy.
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