Timing system with camshaft timing gears and oil immersion belt applicable to 3-cylinder machine non-circular structure

A timing system with camshaft timing gears and an oil immersion belt applicable to a 3-cylinder machine non-circular structure belongs to the technical field of automobile engine transmission. The timing system solves the problems of high consumption power and maintenance trouble caused by chain transmission. The camshaft timing gears have the oval outline, a crankshaft timing gear is connected with a crankshaft of an engine, and each camshaft timing gear is connected with a camshaft of the engine. The oil immersion timing belt is wound around the crankshaft timing gear and the camshaft timing gears and is meshed with the gears through the tooth portion. The crankshaft timing gear is used for driving the oil immersion timing belt, the camshaft timing gears are driven by the oil immersion timing belt, and a timing cover covers the camshaft timing gears, the oil immersion timing belt and the crankshaft timing gear. Controlled periodical torsion vibration is introduced to effectively offset or reduce the torsion vibration of an air distribution mechanism, meanwhile the oil immersion belt is adopted, timing errors can be reduced remarkably, and the driving power of the timing system is reduced.