Fuel injector testing system
First Claim
Patent Images
1. A fuel injector testing system, comprising:
- a sleeve forming a cavity with an inside surface, where the sleeve has at least two interfaces on the inside surface, where the sleeve forms at least one test orifice to the cavity, and where the at least one test orifice is positioned between the at least two interfaces;
at least one connector mounted on the sleeve, where the at least one connector forms a passage to the at least one test orifice;
a tube interchangeably connected to the at least one test connector; and
an air displacement mechanism connected to the tube.
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Abstract
A fuel injector testing system has a sleeve that mechanically isolates one or more test volumes in a fuel injector. The sleeve has interfaces on an inside surface. The interfaces sealably engage the O-rings on the fuel injector. An air displacement mechanism is connected to the sleeve. The air displacement mechanism adds or removes air from the test volumes. The pressure within each test volume is checked to determine whether there is any air leakage from the test volume.
14 Citations
31 Claims
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1. A fuel injector testing system, comprising:
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a sleeve forming a cavity with an inside surface, where the sleeve has at least two interfaces on the inside surface, where the sleeve forms at least one test orifice to the cavity, and where the at least one test orifice is positioned between the at least two interfaces;
at least one connector mounted on the sleeve, where the at least one connector forms a passage to the at least one test orifice;
a tube interchangeably connected to the at least one test connector; and
an air displacement mechanism connected to the tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15, 16, 17)
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8. A fuel injector testing system for a hydraulically activated electronically controlled unit injection (HEUI) fuel injector, comprising:
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a sleeve forming a cavity with an inside surface, where the inside surface has a top interface, a middle interface, and a bottom interface, where the sleeve forms a first test orifice connected to the cavity, where the first test orifice is positioned between the top and middle interfaces, where the sleeve forms a second test orifice connected to the cavity, and where the second test orifice is positioned between the bottom and middle interfaces, where the top, middle, and bottom interfaces sealably engage top, middle, and bottom O-rings on a HEUI fuel injector when the HEUI fuel injector is inserted into the cavity, where the sleeve forms a first test volume between the top and middle interfaces when the HEUI fuel injector is inserted into the cavity, where the sleeve forms a second test volume between the top and middle interfaces when the HEUI fuel injector is inserted into the cavity, where the first and second test volumes extend into HEUI fuel injector; and
a first connector mounted on the sleeve, where the first connector forms a first passage to the first test orifice;
a second connector mounted on the sleeve, where the second connector forms a second passage to the second test orifice;
a tube interchangeably connected to at least one of the first and second test connectors; and
an air displacement mechanism connected to the tube. - View Dependent Claims (9, 10, 11, 12, 18)
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19. A method for testing a fuel injector, comprising:
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mechanically isolating at least one test volume of a fuel injector with a sleeve;
changing the amount of air in the at least one test volume; and
testing the at least one test volume for air leakage. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification