How often does Cheng Kai d50 clean the throttle?

Starting from one day, the d50 throttle is cleaned every 20,000 kilometers. Throttle is a controllable valve, which controls air to enter the engine. After the gas enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be burned to do work. The throttle valve is located between the air filter of the air intake system and the engine block. Qichen d50 is a compact car with the length, width and height of 4480mm, 1695mm and 1535mm respectively, and the wheelbase is 2 600 mm. In terms of power, Qichen d50 is equipped with a 1.6-liter naturally aspirated engine with the maximum horsepower1.