Engine supercharger oil pipe, engine assembly and motor vehicle

The utility model provides an engine supercharger oil pipe, an engine assembly and a motor vehicle. The engine supercharger oil pipe comprises a first connecting part, a second connecting part and a middle connecting pipe, the first connecting part is connected with the middle connecting pipe through a corrugated pipe, the second connecting part is connected with the middle connecting pipe through a corrugated pipe, at least one of the first connecting part and the second connecting part comprises a mounting flange, and an inwards-concave conical concave table communicated with the corrugated pipe is formed on the end face of the mounting flange. The first connecting part is connected with the middle connecting pipe through a corrugated pipe, and the second connecting part is connected with the middle connecting pipe through a corrugated pipe, so that the oil pipe can be adjusted at multiple angles during installation, and assembly is facilitated; meanwhile, modal frequency can be changed by changing the stru