DIESEL ENGINE FUEL INJECTION PUMP WHICH PISTONS ARE SEALED WITH ALL METAL SEAL RINGS
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United States of America Patent
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-
N/A
Issued Date -
Jan 17, 2013
app pub date -
Jul 13, 2012
filing date -
Jul 14, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An injection fuel pump, comprising: a pump body; a drive shaft assembled into the pump body; a piston-drive cam assembled on to the drive shaft; and one or more cylinder heads, each comprising: a pump piston inserted in a cylinder bore, wherein the pump piston is fitted with one or more all-metal-seal rings; wherein the pump piston that is fitted with one or more all-metal-seal rings having a cross-sectional area that is the same as the cylinder bore cross-sectional area, as such creating zero internal leakage. In one embodiment, the all-metal-seal rings are coiled felt seals.
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