High Pressure Pump
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United States of America Patent
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Issued Date -
Mar 24, 2016
app pub date -
Jun 4, 2014
filing date -
Jul 1, 2013
priority date (Note) -
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Abstract
A high pressure fuel pump unit includes a pump head, a cam-follower, a plunger extending along a longitudinal axis from a first extremity slidably arranged in a pumping bore of the pump head to a second extremity cooperating with the cam-follower lubricated by oil and, a spring compressed between the pump head and the cam-follower. The pump unit further includes an annular seal arranged around the plunger and fixed to the pump head in order to prevent mixing of fuel with oil.
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