What is the hose next to Citroen c5 accelerator?

According to Pacific Auto's inquiry, the hose beside the C5 accelerator of Citroen is a kind of ventilation pipe, which is used to cool the accelerator of the vehicle. Throttle is a control valve that controls air to enter the engine and plays an important role in the combustion process of vehicles. When the vehicle is running, especially when it starts, accelerates and runs at full speed, the throttle valve will open, allowing more air to enter the engine and providing enough oxygen to support combustion.

Dongfeng Citroen C5 has 2.0, 2.3 and 3.0 engines. After 20 14, there are two kinds of displacement: 1.6T and1.8t. Among them, 2.0 models are divided into manual transmission and automatic transmission, and 2.3 and 3.0 displacement models are automatic transmission models.