AUBURN HILLS, Mich. BorgWarner
Emissions Systems is producing multi-spark ignition coils at its plant
in Muggendorf, Germany, for Daimler's six- and eight-cylinder engines.
With displacements between 3.5 and 5.5 liters and power ratings ranging
from 249 to 549 HP (185 kW - 410 kW), these powerful engines are
available in the Mercedes-Benz C-, E- and S-Classes. Specially designed
for gasoline direct-injection (GDI) engines running stratified
combustion, BorgWarner's compact multi-spark ignition coil technology
enlarges the ignition zone for more controlled and optimized combustion,
improved fuel economy and reduced emissions.
"BorgWarner's multi-spark ignition technology extends spark duration and
provides the high ignition voltage needed to optimize engine
performance for today's turbocharged direct-injection gasoline engines,"
said Brady Ericson, president and general manager, BorgWarner Emissions
Systems. "By increasing frequency and variability, BorgWarner's
advanced ignition technology allows automakers to take advantage of high
exhaust gas recirculation rates, turbocharging and stratified charge
operation to improve fuel economy and emissions."
Based on a conventional 14-volt coil, BorgWarner's multi-spark ignition
coil features a bi-directional interface with an electronic control unit
to precisely trigger multiple discharges and recharges within one
millisecond to produce spark energy multiple times at short intervals.
Enlarging the ignition zone and generating multiple sparks extends the
spark duration considerably to deliver optimal combustion, improved fuel
economy, lower emissions, and prevent misfires, according to the
company. In addition, BorgWarner says this ignition technology helps
reduce emissions during cold-starts and improves engine running under
nearly any operating condition.