Gasoline Systems
Ignition coil
Gasoline engines require an ignition spark to start
Ignition coil
the combustion of the air-fuel mixture in the combustion chamber. This spark is generated at the spark
plug. The ignition coil transforms energy from the
vehicle electric system into the required high voltage
and provides it to the spark plug.
The air-fuel mixture in the combustion chamber is
ignited by means of an ignition spark. The spark plug
requires an ignition voltage of up to 30,000 Volts to
generate the spark. The ignition coil generates this
voltage from the 12 V vehicle electrical system and
delivers it to the spark plug at the time of ignition.
Customer benefits
▶ Compact, lightweight and robust
▶ Scalable spark energy
The ignition coil works like a transformer. Using two
– High efficiency
concentric coils it transforms the electric energy from
– Can be used for all combustion processes
the vehicle battery into high voltage, stores it tempo-
▶ Customization
rarily and then delivers it to the spark plug as a high-
– Installation point, primary connector, jacket,
voltage current surge.
spark energy and characteristic
▶ Flexible jacket makes it also suitable for difficult
installation conditions
Technical features
Power Mini ignition coil
Ignition energy
50–90 mJ
Secondary voltage
(35 pF/10 MΩ)
> 32 kV
Integrated electronics
Application with
Gasoline, CNG, flex fuel
Robert Bosch GmbH
Gasoline Systems
Postfach 30 02 40
70442 Stuttgart
Printed in Germany
© Robert Bosch GmbH 2013. All rights reserved, also regarding any disposal, exploitation, reproduction,
editing, distribution, as well as in the event of applications for industrial property rights.