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Demonstration of the Ability of a Novel Engine Oil to Remove Hydrocarbon Deposits in Two-Stroke Engines
Abstract:
In a two-stroke engine, carbon is a natural by-product of
incomplete combustion. Fuel and oil quality vary leading to various
degrees of carbon deposit build up on critical engine parts over
time. If the carbon deposits are left on engine components and
allowed to accumulate, it can lead to reduced horsepower, reduced
fuel economy, increased emissions, and in the worst case the
deposits can cause engine damage. A novel two-stroke engine oil was
developed specifically to remove these deposits, restore the
operating efficiency, and potentially lengthen the useful life of
the two-stroke engine.
In order to prove the restorative ability of this novel
technology, dynamometer tests and field trials were conducted. In
the dynamometer portion, the oil was tested in two of the standard
TC-W3® certification tests for marine engine oils. The first was
the OMC 40HP and the second was the OMC 70HP test. Both test
engines had heavy deposits from previous testing which were
significantly reduced by using this novel engine oil. Final proof
of performance data was obtained by evaluating the new engine oil
in field trials. In the field trials two types of engines were
used. One trial used an early 1970s Mercury 40HP carbureted engine.
The other trial used 2007 model direct fuel-injected Mercury 225HP
OptiMax engine. As many boaters keep and maintain their engines for
a long time, this represents the range of engines in the market
today. These engines were previously used and had deposit buildup.
Similar to the dynamometer testing, deposits were removed from
these engines by using this novel engine oil.
In summary, for two-stroke engines to operate well, carbon
build-up and deposits must be minimized. The new oil developed is
significant and important because it successfully reduces deposits,
hence restoring the engines operating efficiency. This may lead to
reduced emissions, enhanced fuel efficiency, and longer operating
lifetimes.