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	This 350-hour procedures uses a Cummins ISB common rail fuel system engine equipped with EGR.

The Cummins ISB lubricant procedure is approved for API CJ-4 performance evaluations.

The Cummins ISB procedure is used to evaluate a crankcase lubricant's ability to reduce camshaft lobe and valvetrain wear.

This procedure simulates repetitive cyclic operation found in the field with engines configured to meet 2007 emissions regulations.

Cummins ISB Equipment and Procedure

This 350-hour procedures uses a Cummins ISB common rail fuel system engine equipped with EGR. After an initial 100 hours of steady-state operation at 1,600 RPM to accumulate 3.25% soot in the oil, the engine is operated for 250 hours on a multi-step, 28-second cycle simulating cyclic operation. The Cummins ISB procedure uses PC-10 fuel.

Parts evaluated include:
 

Procedure Results

	Critical parts are evaluated (all above)

Cummins ISB procedure evaluates the following parts:

• Camshaft

• Crossheads

• Mushroom-style slider tappets

Used lubricant samples are analyzed for:

• Wear metals

• Soot (TGA)

• Viscosity

• Total base number (TBN)

• Total acid number (TAN)

Pass/Fail Criteria

Pass/fail criteria limits include:

For more information about the Cummins ISB lubricant procedure, or how you can contract with Southwest Research Institute (SwRI), please contact Jim McCord at jmccord@swri.org or (210) 522-3439.

cumminsisb.swri.org

| Engine Lubricants Research Department | Fuels and Lubricants 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.

December 28, 2012