+ 1.1. Governing bodies and devices
+ 2. Technical characteristics
+ 3. Engines
+ 4. Cooling system
+ 5. Exhaust system
+ 6. Power supply system
+ 7. Transmission
+ 8. Running gear
+ 9. Steering
+ 10. Brake system
+ 11. Body
- 12. Electric equipment
+ 12.1. Electric equipment system
- 12.2. Ignition system
+ 12.2.1. Transistor system of ignition
+ 12.2.2. Electronic system of ignition
12.2.3. Contactless system of ignition of FEI
+ 12.3. Electric circuits
On Audi 100 cars apply two types of system of ignition: contactless transistor system on cars without a turbo-supercharging and electronic system on cars with a turbo-supercharging.
The transistor system consists of the distributor of ignition, the coil of ignition, the control unit ignition, candles and wires of a high and low voltage.
The sensor of impulses of the distributor of ignition works by a principle of effect of the Hall.
The system of ignition has two electric chains: high and low voltage.
The high-voltage chain consists of a high-voltage winding of the coil of ignition, a distributor cover with a contact piece of coal, a begunka of the distributor, spark plugs and high-voltage wires, a low-voltage chain – from the lock of ignition, primary winding of the coil of ignition and the block of impulses of the distributor developing signals for the control unit. The block of impulses, or the Hall sensor, consists of a winding, a constant magnet and a chip forming signals. The control unit is located in a compartment of the engine and represents the electronic switchboard which, receiving signals of the block of impulses, operates a current in primary winding of the coil of ignition.
The distributor of ignition has centrifugal and vacuum regulators for correction of a corner of an advancing of ignition depending on frequency of rotation of a cranked shaft of the engine and loading.
Electronic ignition includes the ignition coil, a rapredelitel, the control unit, spark plugs, sensors, wires of a high and low voltage.
The sensor of impulses of the distributor also works by a principle of effect of the Hall. The electronic control unit receives information from various sensors about engine loading, frequency of rotation of a cranked shaft etc. and calculates the most effective corner of an advancing of ignition. Besides, the block constantly supervises work of all system and warns the driver about serious malfunctions of system in case of their emergence by means of a control lamp.