This electronic flyer highlights our capabilities and activities in the area of EMD 2-567 Engine Facility. Please sign our guestbook. For additional information, e-mail Brian P. Koehler, Southwest Research Institute.

EMD 2-567 Engine Facility

To help clients determine whether their lubricating oil qualifies for use in locomotive engines, Southwest Research Institute (SwRI) uses a General Motors Corporation Electro-Motive Division (EMD) 2-567C two-cylinder research engine to conduct a 25-hour Silver Lubricity Test.

With a type D-1 assembly, the test stand is built up using new piston pins and special pin bearings, which are measured and weighed before and after the test. The engine lubrication system is flushed with test oil and the crankcase is charged with new oil prior to running a 9-hour, 20-minute, EMD-type break-in.


Bearings are evaluated using the EMD distress demerit procedure with values assigned to indicate the degree of feathering occurring in the oil slots.


Bearing conditions are intentionally sensitized by using special non-production wrist pin bearings. No lead overlay is used on the pin bearings to protect the silver surface, and no center oiling hole or oil slot is utilized by the test bearings. As a result, the as-manufactured surface of the hardened steel wrist pin is presented directly to the clean, finished silver surface of the bearing without the seating benefits afforded by the lead overlay.

Test oil is applied to pins and bearings before assembly and the engine is pre-lubed with test oil before starting. The engine sump holds 45 gallons, with 85 gallons of test oil required for each test. One-quart samples are taken of new test oil after break-in and at end of test. These three samples are kept for six months and are available to the client. After running the 25-hour Silver Lubricity Test, the special pin bearings are rated using the EMD distress demerit procedure to determine whether the oil meets the criteria set by EMD to qualify for locomotive use.


The EMD-2 567 test stand used for the Silver Lubricity Test can also be configured to run durability and exhaust emissions tests.


EMD SILVER LUBRICITY TEST
Primary Test Operating Conditions

Engine Speed
Fuel Flow
Airbox Pressure
Oil Inlet Temp
Coolant Inlet Temp
835 2 rpm
91.0 1.0 lb/hr
6.8 0.1 inch Hg
210F 2F
180F 2F
Fuel Type 0.1% nominal sulfur, 47 to 50 cetane, 
#2 diesel
Piston Pin Bearing
Distress Limit
40 demerits, max

This flyer was published in May 2001. For more information about the EMD 2-567 engine facility, contact Brian P. Koehler, principal engineer, Phone (210) 522-3588, Fax (210) 684-7523, Fuels and Lubricants Research Division, Southwest Research Institute, P.O. Drawer 28510, San Antonio, Texas 78228-0510.

Fuels and Lubricants Research Brochures
SwRI Brochures separate.gif (834 bytes) SwRI Publications separate.gif (834 bytes) SwRI Home