ArticleThe utilization of biofuels in spark ignition and compression ignition engines is the
trend of the recent time. The great expectations are inserted into n
-
butanol as a fuel, especially
for spark ignition engines. The short time use
of n
-
butanol in the SI (spark ignition) combustion
engine does not make a big problem (start of the cold engine, change of the air
-
fuel ratio). The
purpose of this contribution is the effect of long
-
term use of n
-
butanol as a fuel for SI engine. For
this
purpose the small portable generator was used. The harmful emissions, fuel consumption and
power of the generator was measured then the generator was operated for 300 hours on 100%
n
-
butanol with 80% of nominal load and the measurement was repeated. The g
enerator was
loaded with adjustable electrical resistance. As a reference fuel the petrol BA 95 with no bio
-
component was used. During the operation on n
-
butanol no technical problems occurred with the
generator. After 300 hours of operation on n
-
butanol t
he performance parameters slightly
decreased with little impact on production of harmful emissions components
