OPERATING INTERNAL COMBUSTION ENGINES WITH PYROLYSIS OIL
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United States of America Patent
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Issued Date -
Feb 12, 2015
app pub date -
Sep 19, 2012
filing date -
Feb 28, 2012
priority date (Note) -
Abandoned
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Abstract
A fuel recirculating unit (114) for providing an engine fuel system (121) of an internal combustion engine (100) with pyrolysis oil based fuel may comprise a circulation tank (122), a fuel supply line outlet (2600) for fluidly connecting to an inlet of the engine fuel system (121), a fuel supply line (125A) for fluidly connecting the circulation tank (122) with the fuel suppy line outlet (2600), a fuel return line inlet (2610) for fluidly connecting to an outlet of the engine fuel system (121), a fuel return line (125B) for fluidly connecting the fuel return line inlet (2610) with the circulation tank (122), and at least one of a first release valve unit (126A) positioned downstream of the fuel return line inlet (2610), a second release valve unit (126A) positioned upstream of the circulation tank (122) in the fuel return line (125B), and a supply valve unit (2417) positioned upstream of the fuel supply line outlet (2600). The configuration of the various valves may allow cleaning the recirculating unit (114) and associated engine fuel systems from a fuel used to operate the respective internal combustion engines.
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