Catalytic converter assembly, engine assembly and vehicle

The utility model provides a catalytic converter assembly, an engine assembly and a vehicle, the catalytic converter assembly comprises a shell, a catalytic converter and a particle catcher, and the catalytic converter and the particle catcher are used for treating waste gas generated after combustion of a vehicle engine. The shell comprises a gas inlet, a gas outlet and a mounting cavity, the gas inlet and the gas outlet are both communicated with the mounting cavity, waste gas generated after combustion of an engine enters the mounting cavity in the catalytic converter assembly from the gas inlet, and treated gas is exhausted to the outside from the gas outlet. In the direction from the air inlet to the air outlet, the catalytic converter and the particle catcher are sequentially arranged in the mounting cavity side by side, so that the particle catcher is close to the engine and can catch carbon particles generated after combustion of the engine in time, the particle catcher works at a high temperature, pa