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Ignition system

In a conventional ignition coil generates a high voltage ignition distributor and transmits the current time required to the appropriate spark plug.

The contactless ignition system camshaft position sensor and steering angle sensor of the crankshaft the engine control unit transmit the information to which the cylinder is necessary to submit the ignition voltage. The engine control unit sends a signal corresponding to the ignition coil, which generates a high voltage and transmits the current spark plug.

The contactless ignition system ignition pulse is applied once on two spark plugs, one on the compression stroke, one on the exhaust stroke - the ignition spark on the exhaust stroke has no value on the engine and therefore wasted. Cylinders are grouped according to the order of cylinders. For example, the order of cylinders - 1-3-4-2. Each coil actually consists of 2 separate high-voltage windings that is fed into the spark two cylinders each (one number to the cylinders 1 and 4 and another number to the cylinders 2 and 3).

If such an inductive ignition system to connect a tachometer to the high-voltage wire of the spark plug, it will show the speed of the crankshaft twice the actual speed (ie, 1600 ^min-1, instead of the actual 800 ^min -1).

Electronic ignition timing

Ignition timing is determined and set the engine control unit based on signals from various sensors and switches.

The engine control unit alters the ignition timing according to engine speed, the amount of supplied air, coolant temperature and other conditions.

Ignition timing at a frequency of idling: 8 ?� 5 ?� BTDC (6 ?� ?� 5 ?� for Europe).

The ignition timing is not adjustable.