NGK PKW Katalog 2012-2013

LPG LaserLine –
the best for gas operated engines
LPG LaserLine gives retailers
and repair shops a product line
with spark plugs developed
especially for gas operated
engines.For both retailers and
repair shops this makes
conversion and servicing not
only easier, but also more
reliable.
Drivers throughout Europe who
convert their cars to gas operation
benefit from substantially lower
fuel prices, due to the lower taxes
on gas. The number of
conversions is increasing from
year to year. Retailers and repair
shops can profit from this
development.
Required ignition voltage increases in gas operated engines
Required ignition voltage (kV)
35
30
25
20
15
10
5
Conventional platinum spark plug
0
1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000
Super gasoline:
Liquid gas (LPG):
Engine speed (RPM)
Spark gap 0.80 mm
Spark gap 0.80 mm
Choosing the right spark plug in
the past involved many factors,
which often meant extra work.
Because the combustion of gas
is very different from the
combustion of gasoline: the
gas/air mixture is
more difficult to ignite. The
required ignition voltage
increases (see graph), together
with the risk of failure for the
ignition coils. Also, the gas/air
mixture burns at a higher
temperature.
Conventional electrode and
housing materials corrode more
quickly in this environment, and
the spark plug also has to
dissipate more heat. Until now,
the best solution was to change
GB
15
from standard spark plugs to
precious metal spark plugs with a
different heat range and to adjust
the spark gap, in some cases.
But now there is a better
alternative:
special LPG LaserLine spark
plugs. The product line covers
more than 90 percent of
conversion-capable automobiles
in Europe and as many as
97 percent in some countries.
Therefore, LPG LaserLine is the
ideal spark plug for practically
every European car
that is converted.