The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2002
Filed:
Mar. 30, 2000
Wei-Min Ren, Yorktown, VA (US);
David P. Wieczorek, Seaford, VA (US);
Siemens Automotive Corporation, Auburn Hills, MI (US);
Abstract
A metering assembly for a fuel injector having multiple orifice plates is disclosed. The metering assembly includes a valve body, a seat, a needle and a multi-layer orifice plate assembly. The valve body has an inlet, an outlet and a longitudinal axis extending therethrough. The seat is disposed proximate the outlet and includes a passage having a sealing surface and an orifice. The needle is reciprocally located within the housing along the longitudinal axis between a first position wherein the needle is displaced from the seat, allowing fuel flow past the needle, and a second position wherein the needle is biased against the seat, precluding fuel flow past the needle. The multi-layer orifice plate assembly is located at the housing outlet and includes a first orifice plate having a plurality of first openings extending therethrough. The orifice plate assembly further includes a second orifice plate having a plurality of second openings extending therethrough. The plurality of first openings and the plurality of second openings are fluidly connected by at least one channel. A method of accelerating fuel through the injector is also disclosed.