Method and device for controlling an engine with a reconstituted crankshaft signal

A method for controlling a four-stroke internal combustion engine comprising a first sensor detecting an angular position of the camshaft and a second sensor detecting a passing of the teeth of a toothed wheel associated with the crankshaft, said method comprising:

• determining an instantaneous position of the engine in its four-stroke cycle on the basis of information provided by said sensors;
• producing a reconstituted crankshaft signal comprising an electrical signal extending over two crankshaft revolutions in a nominal direction of rotation of the engine, said electrical signal comprising:
• a single main pulse, having a predetermined first duration, corresponding to the passing of a predetermined reference tooth of the toothed wheel associated with the crankshaft;
• a plurality of secondary pulses, each having a predetermined second duration, each corresponding to the passing of a tooth of the toothed wheel associated with the crankshaft;
• the predetermined first duration being greater than the predetermined second duration.