How often does the eyesight throttle need to be cleaned?

20,000 km long-term throttle cleaning. Throttle is a controllable valve, which is used to control the gas entering 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. Take jing yuan 2020 1.5L Manual Premium Edition as an example. Its body dimensions are: length 4599mm, width 1747mm, height 1482mm and wheelbase 2615 mm. In terms of power, it is equipped with 1.5-liter naturally aspirated engine, with maximum horsepower 109ps, maximum power of 80kw and maximum torque 142nm, matching with a 5-speed manual gearbox.