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Method for matching the spool valve lands in a fuel injector

  • US 6,174,219 B1
  • Filed: 07/23/1999
  • Issued: 01/16/2001
  • Est. Priority Date: 07/23/1999
  • Status: Expired due to Term
First Claim
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1. A method for matching lands in a spool valve for a fuel injector, wherein the spool valve has a valve body forming an inside surface having an inside diameter to receive a spool having outside diameter, specifications defining the inside surface of the valve body, the valve body having a contact point at a location where a body land connects with a spool land formed by a spool groove on the spool, the method comprising the steps of:

  • (a) measuring the inside surface;

    (b) determining the location of the contact point on the valve body;

    (c) identifying a grind area on the spool based on the location of the contact point on the valve body; and

    (d) grinding the grind area to form the spool groove and the spool land.

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