Why is there an exhaust smell in the cab?

[LaEmma]

The exhaust smell in the cab is due to the air-fuel mixture being too rich, incomplete combustion, or carbon deposits in the throttle and cylinders. The cab is an important part of the body of trucks and special vehicles, serving as the workplace for professional drivers day and night. Its structure directly affects the driver's safety, work efficiency, and health. The cab is generally made of a thin-shell metal structure and is flexibly connected to the frame, not bearing any load, which makes it a non-load-bearing body. The throttle is a controllable valve that regulates air intake into the engine, available in two types: traditional cable-operated and electronic throttle. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture, which then burns to perform work.