Injection pressure regulator test system

• US 7,124,628 B2
• Filed: 03/30/2004
• Issued: 10/24/2006
• Est. Priority Date: 03/30/2004
• Status: Expired due to Fees

• Current Assignee: International Engine Intellectual Property Company, LLC (Volkswagen AG)
• Original Assignee: International Engine Intellectual Property Company, LLC (Volkswagen AG)
• Inventors: Wildman, Mark A.
• Primary Examiner(s): MCCALL, ERIC SCOTT
• Application Number:
  US10/812,671
• Publication Number:
  US 20050217358A1
• Time in Patent Office: 938 Days
• Field of Search: 731/16, 731/172, 731/173, 731/181, 731/19.A, 731/19.R, 73/46, 73/47, 73/497, 731/171
• US Class Current: 73/114.43
• CPC Class Codes: F02M 65/00 Testing fuel-injection apparatus, e.g. testing injection timing testing of ignition F02P17/00; measuring fuel consumption G01F9/00; Cleaning of fuel-injection apparatus

Abstract

An injection pressure regulator testing system has a sleeve, a pressure source, and a power supply. The injection pressure regulator is inserted into a test chamber formed by the sleeve. The power source activates the injection pressure regulator for operation at a selected pressure level. The pressure source pumps hydraulic fluid into the test chamber. A determination is made as to whether the injection pressure regulator can achieve a selected pressure level.

Claims

1. A method for testing an injection pressure regulator, comprising:

sealably engaging an injection pressure regulator in a test chamber formed by a rigid sleeve, wherein the step of sealably engaging includes;

sealably engaging a first O-ring of the injection pressure regulator against a first interface on an inside surface of the test chamber, and

sealably engaging a second O-ring of the injection pressure regulator against a second interface on an inside surface of the test chamber;

activating the injection pressure regulator for operation at a selected pressure level;

pumping hydraulic fluid into the test chamber; and

determining whether the injection pressure regulator can achieve the selected pressure level.

2. The method for testing an injection pressure regulator of claim 1, further comprising verifying whether the injection pressure regulator can hold the pressure within a selected tolerance of the selected pressure level for a selected time period.

3. The method for testing an injection pressure regulator of claim 2, where the selected pressure level is a pressure level far a HEUI fuel injection system.

4. The method for testing an injection pressure regulator of claim 1,

where the selected pressure level is about 500 psi (3MPa);

where the selected tolerance is in the range of about −

1 percent through about +1 percent of the selected pressure level; and

where the selected time period Is in the range of about 1 second through about 10 seconds.

5. A method for testing an injection pressure regulator comprising:

placing the injection pressure regulator in a sleeve having a test chamber in fluid communication with the injection pressure regulator;

sealably engaging at least one O-ring disposed on the injection pressure regulator against at least one interface on an inside surface of the test chamber;

activating the injection pressure regulator for operation at a selected pressure level;

pumping hydraulic fluid into the test chamber;

venting hydraulic fluid out of the test chamber through the injection pressure regulator; and

maintaining the selected pressure level In the test chamber.

6. The method of testing an injection pressure regulator of claim 5, wherein the at least one O-ring disposed on the injection pressure regulator includes a first O-ring engaging a first interface on the inside surface of the test chamber, and a second O-ring engaging a second interface on the inside surface of the test chamber.

7. A method for testing an injection pressure regulator comprising:

placing the injection pressure regulator in a sleeve having a test chamber in fluid communication with the injection pressure regulator;

sealably engaging a first O-ring of the injection pressure regulator against a first interface on an inside surface of the test chamber;

sealably engaging a second O-ring of the injection pressure regulator against a second interface on an inside surface of the test chamber;

activating the injection pressure regulator for operation at a selected pressure level;

pumping hydraulic fluid into the test chamber;

venting hydraulic fluid out of the test chamber through the injection pressure regulator; and

maintaining the selected pressure level in the test chamber.