×

Accumulator fuel injection system

  • US 5,551,391 A
  • Filed: 09/03/1993
  • Issued: 09/03/1996
  • Est. Priority Date: 02/03/1988
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of automatically tailoring the spray of fuel injected from a fuel injector for varying power settings of an internal combustion engine fueled by said injector, said method comprising:

  • providing a fuel injector having a pintle nozzle including a conical seat which surrounds a spray orificeterminating in an outer spray opening, and an injector needle having a pintle head with afuel deflecting surface section that flares downwardly and outwardly away from the direction of the seat, said fuel deflecting surface section extending at least partially outside of said spray opening when said needle is fully lowered or partially lifted and being spaced inwardly from said spray opening at maximum needle lift, wherein the spray configuration from said spray opening is dependent upon the position of said fuel deflecting surface section with respect to said spray opening and varies with movement of said fuel deflecting surface section with respect to said spray opening;

    lifting said injector needle from said seat by a first designated amount at a first engine power setting and injecting spray from said nozzle in a first spray configuration; and

    lifting said injector needle from said seat by a second designated amount at a second engine power setting and injecting spray from said nozzle in a second spray configuration.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×