Starting clutch

The utility model discloses a starting clutch aiming at providing a starting clutch with reliable performance, compact structure and less occupation area. A main oil cylinder fitting with an one way valve is connected on a rotating shaft; a gear fitting is arranged on the rotating shaft; a friction sheet assembly is arranged between the main oil cylinder fitting and the gear fitting; an oil discharge hole is radially arranged at the corresponding position between the main oil cylinder fitting and the friction sheet assembly; a main piston corresponding with the friction sheet assembly is slidably arranged inside the main oil cylinder fitting; the main oil cylinder is formed between the main oil fitting and the main piston. A dynamic pressure balance piston with an oil through hole is fixedly arranged on the main oil cylinder fitting; a dynamic pressure balance oil cylinder is formed between the main piston and the dynamic pressure balance piston, wherein a reposition spring is arranged. Pressure oil pipes and three diverting discs are arranged on the shell body; three oil pipes are coaxially sleeved on the rotating shaft; one of the three oil pipes is communicated with the main oil cylinder; one is communicated with the dynamic pressure balance oil cylinder; one is communicated with the other working oil pipes. The utility model can be applied in vehicle starting up.