1. urea SCR system: mainly composed of urea water tank, urea pump, urea nozzle, SCR catalyst, etc. The emission of nitrogen oxides in waste gas can be reduced by injecting urea aqueous solution.
2. DPF system of particle catcher: it is mainly composed of particle catcher, differential pressure sensor, temperature sensor and DPF cleaning device. It can reduce emissions by capturing and burning particles.
3. DOC system of oxidation catalyst: it is mainly composed of oxidation catalyst, temperature sensor and pressure difference sensor, and converts carbon monoxide, hydrogen and volatile organic compounds into carbon dioxide, water and oxygen through oxidation reaction.
4. TWC system of three-way catalyst: it is mainly composed of three-way catalyst, oxygen sensor and temperature sensor, and converts carbon monoxide, nitrogen oxides and volatile organic compounds into carbon dioxide, water and oxygen through redox reaction.