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1F2 -- 18 M161 ENGINE CONTROLS DAEWOO MY_2000 IGNITION SYSTEM This ignition system does not use a conventional distributor and coil. It uses a crankshaft position sensor input to the Engine Control Module (ECM). The ECM then determines Electronic Spark Timing (EST) and triggers the electronic ignition system ignition coil. with the cylinder that is opposite it (2--3 or 1--4). The spark occurs simultaneously in the cylinder coming up on the compression stroke and in the cylinder coming up on the exhaust stroke. The cylinder on the exhaust stroke requires very little of the available energy to fire the spark plug. The remaining energy is available to the spark plug in the cylin- der on the compression stroke. Engine load (mass air flow sensor). D Engine temperature. D Intake air temperature. D Crankshaft position. D Engine speed (rpm). YAA1F910 |