Multi-cylinder rotary engine with triangular cylinders

The invention relates to a multi-cylinder rotary engine with triangular cylinders. The rotary engine with various structures is only suitable for a plurality of rotary engines with triangular cylinders and oval rotor pistons. Therefore, a parallel connection structure adopted by an existing multi-cylinder engine is applied to the in-line engine, the crankshaft part is changed into an integrated crankshaft from a fragile and complex split assembly type, the problem of rotation errors during operation is solved, and durability is improved. In addition, in the series connection structure, the number of parts such as parallel shafts and gears is greatly reduced, the size of the engine is reduced, economic benefits are improved, along with reduction of noise and the failure rate, the service life of the engine is prolonged, miniaturization of the engine is facilitated, and in addition, although the ignition explosion positions of all the air cylinders are different, the ignition explosion cannot be influenced. How