Method and system for testing a fuel injector

Measuring and testing – Internal combustion engine or related engine system or... – Fuel system or part thereof

Reexamination Certificate

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C073S114510

Reexamination Certificate

active

07878050

ABSTRACT:
Disclosed is both an apparatus and method for quantifying an injection event of a fuel injector, including both multiple pulse and single pulse injection events. Typically, the fuel injector is a common rail injector. The apparatus includes a pressure chamber for isolating a portion of the injection pressure for reducing pressure waves and reflections which can create “noise” in the detection of an injection pressure. The invention further includes determining the precise start and end times of injection using cavitation created by the injection event.

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patent: 6817233 (2004-11-01), Toiyama et al.
patent: 7197918 (2007-04-01), Shen
patent: 7472586 (2009-01-01), Niimi et al.
patent: 2002/0174717 (2002-11-01), Toiyama et al.
patent: 2005/0034514 (2005-02-01), Shen
patent: 2005/0150271 (2005-07-01), Klopfer et al.
patent: 2006/0101922 (2006-05-01), Niimi et al.
patent: 2007/0240500 (2007-10-01), Pollard et al.
patent: 2009/0007695 (2009-01-01), Araki et al.
patent: 2009/0114035 (2009-05-01), Lehnert

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