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Test Method Summary
The JASO M340:1992 specification test evaluates the lubricity of lubricating
oils, used in 2-stroke gasoline engines, such as motorcycle engines,
utility engines and outboard motors.
Test
Engine
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Honda AF27 (SK50MM)
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Test
Fuel
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Mixed fuel
with a mixing ratio of 50:1 |
Test
conditions
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Plug gasket temperature is forcibly
raised at 4000 rpm, under full load operating conditions,
by shutting off cooling air.
Evaluating method : The decrease
in output shaft torque whilst the plug gasket temperature
is raised from 200 to 300oC is measured and relatively
compared
Test order : The test is performed in the following
order ; the standard reference oil, a candidate oil,
and the standard reference oil - on the same day in
order
to prevent errors from environmental factors, such
as, atmospheric change etc.. |
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