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Dušan Horák
Dušan Horák
Dušan Horák
Department of Commercial and Technical Services
Two-channel ignition

Two-channel ignition

PBS ignition is designed to generate voltage impulses for two spark plugs, in the spark gap of which the jumping spark ignites the fuel-air mixture in the APU turbine combustion chamber.
  •  Service life: 8 years or 3,000 starts with starts lasting 30 seconds
  •  Expected technology life cycle: 25 years or 9,000 starts with starts lasting 30 seconds
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The ignition device has two separate channels. Each channel consists of a free oscillation convertor that charges the capacitor. When the internal spark gap voltage is reached, the energy accumulated in the capacitor is discharged in the spark plug. The frequency of discharges depends on the supply voltage; at 14 V it has a minimum value of 3 Hz, while at 30 V the maximum value is 7 Hz.

Ignition parameter

Technical parameters Values
Rated voltage 28 V DC
Nominal current consumption < 3 A
Input voltage 14 V DC ÷ 30V DC
Output voltage 2,5 ÷ 3 kV
Delivered power > 0,6 J
Discharge frequency at 14V DC 3 Hz ÷ 6 Hz
Discharge frequency at 30V DC 4 Hz ÷ 7 Hz
Operating temperature -55 ÷ 100°C
Weight 1,1 kg
Type of operation intermittent (with the option of permanent operation)

Why us?

Compact design with minimal maintenance requirements
Compact design with minimal maintenance requirements
The PBS single and dual channel ignition weighs 0.55 and 1.1 kg respectively; a compact device that can handle up to 3,000 starts with a startup of 30 seconds until inspection.
High reliability
High reliability
The total expected service life is 25 years or 9,000 startups with a 30-second startup time.

Service, spare parts and overhauls of aerospace technology

We provide service of the highest quality for all users of our aerospace technology products.

We have long been working to extend the service life of our products, e.g. by introducing new technologies to produce the most exposed parts. Our turbine-based aicraft equipment regularly receives very good references.