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The EOAT engine is a 1994 International truck
7.3-liter, V-8, four-stroke, turbocharged, compression-ignition
engine using the HEUI fuel injection system. |
The engine oil aeration test (EOAT)
determines the effectiveness of engine lubricating oils at
minimizing air entrainment in large pickups and medium-duty
trucks under high-speed, high-load applications. The EOAT
is part of categories:
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API CJ-4
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API CG-4
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API CH-4
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API CI-4
Engine Oil Aeration Procedure Equipment and
Procedure
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At EOAT hours 1, 5, and 20, the
oil is evaluated to determine the amount of
entrained air in it |
The EOAT engine is a 1994 International
truck 7.3-liter, V-8, four-stroke, turbocharged,
compression-ignition engine using the HEUI
(hydraulically actuated, electronically controlled unit
injector) fuel injection system. The engine is rated at 215 bhp
at 3,000 rpm.
EOAT Results
At EOAT hours 1, 5, and 20, the oil is
evaluated to determine the amount of entrained air in it.
The lubricant is analyzed for wear metals at 0 and 20 hours.
Each engine oil aeration test is run for 20 hours at rated speed and load
conditions with controlled water out, fuel, and inlet air
temperatures and intake air restriction.
Between tests, the engine is flushed twice, for one hour
each, with the next test oil.
EOAT Pass/Fail Criteria
At 20 hours, the maximum allowable
amount of air entrained in the oil is 8% for API CK-4, API
CH-4, and API CI-4 and 10% for API CG-4.
For more information about the engine oil
aeration test capabilities at SwRI or how you can contract with SwRI,
please contact
Ryan Johnson at
rjohnson@swri.org or (210) 522-2892.
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Southwest Research Institute® (SwRI®), headquartered
in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied
engineering and physical sciences research and development organization with
12
technical divisions.
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