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The ASTM D5598 Port Fuel Injector (PFI) Deposit Test evaluates the tendency of a gasoline to keep the port fuel injectors clean.

Port Fuel Injector Deposit Test Procedure

A 1985-87 Chrysler 2.2-L turbocharged engine with an automatic transmission is used for this test. The test cycle consists of:

• F55 miles per hour for 15 minutes

• Engine off, hot-soak for 45 minutes

• Flow test injectors every 1,000 miles for a total test length of 10,000 miles

The fuel requirement for this test is 500 gallons, and the duration is 40 days. The PFI test is a pass if the fouling of all injectors remains 5% or less for the entire test.
 

A modified version of this test is available to evaluate the tendency of a gasoline to clean fouled port fuel injectors. The procedure for this test is as follows:

• For the dirty-up phase, run 15/45 cycle, and flow test until at least one injector is fouled to greater than 10%.

• For the clean-up phase, run 15/45 cycle, and flow test until fuel injector fouling is 5% or less.

Clean-up is confirmed when the fouling of all four injectors becomes 5% or less.

For more information about ASTM D5598 port fuel injector deposit testing capabilities at SwRI or how you can contract with SwRI, please contact Kevin Brunner at kbrunner@swri.org or (210) 522-3579, or contact Frank Stains at fstains@swri.org  or (210) 522-5984.

| Engine and Vehicle R&D | Engine, Emissions & Vehicle Research Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

June 16, 2008