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MOTORINDIA
l
August 2012
Oerlikon Graziano
develops
new synchronizers for trucks
Oerlikon Graziano has developed
a family of state-of-the-art synchro-
nizers for heavy duty truck trans-
missions that sets new standards for
fuel efficiency and ease of shifting.
The first application of the technol-
ogy, on new 9-speed and 14-speed
premium gearboxes, has improved
transmission efficiency by around
10 per cent, saving fuel and reduc-
ing CO
2
emissions. Already a lead-
ing supplier to the agricultural and
construction industries, Oerlikon
Graziano expects the high-efficien-
cy synchronizers to generate signifi-
cant new business in the heavy truck
market.
The new synchronizers save fuel
in two ways: by optimizing the shift
to minimize torque interruption and
by reducing steady-state drag torque
in the transmission. They combine
the high durability and high per-
formance of Oerlikon Graziano’s
existing long life synchronizers
with a new internal activation
system that uses optimized clear-
ances and lubricant paths for higher
efficiency.
“Most new transmissions carry
over existing synchronizer designs
which limits the scope for efficiency
improvements,” said Andrea Ser-
ra, product manager, synchroniser
and powershift design, Oerlikon
Graziano. “Our new synchronizer
technology offers a step-change im-
component zone
New
generation
synchronizers from
Oerlikon Graziano
featuring integrat-
ed activation sys-
tem with optimized
clearances to give
smoother shifting
and reduce drag
Fuel savings, easier gear shifting facilitated