Weichai Power Co., Ltd.

Chao Rong

Hongshuang He

Xia Wang

Xiaolei Fu

Bin Hou

Yangyang Zhang

Feng Yun

Qingqing Zhang

Jianqiang Wei

The present invention belongs to the technical field of diesel engines, and particularly relates to an engine cooling system and a cooling method therefor. In the engine cooling system of the present invention, when an engine needs to be warmed up, a first valve is opened, a lower engine body water storage chamber is in communication with an upper engine body water storage chamber, and some of the cooling water directly flows into the lower engine body water storage chamber from the upper engine body water storage chamber. The flow of the cooling water entering an engine body is reduced, and under the condition that heat dissipated by the engine is unchanged, the temperature rise of the cooling water flowing through the engine body such as a cylinder sleeve upper cooling water chamber and a cylinder sleeve lower water jacket is faster, such that an engine warming effect is improved.

Engine cooling system and cooling method therefor

An exhaust pipe assembly includes: an exhaust cavity; an exhaust port () and at least two air inlets () communicating with the exhaust cavity, the exhaust port () being disposed at an end of the exhaust pipe assembly; and a water inlet (), a first part of a water inlet cavity (), a second part of a water inlet cavity, a water counterflow cavity, and a water outlet () that are provided in the exhaust pipe assembly. The water inlets () are provided in the same number as the air inlets (). The first part of the water inlet cavity () communicates with the first water inlet portion (). The second part of the water inlet cavity communicates with the second water inlet portion (). The water counterflow cavity communicates with the end of the second part of the water inlet cavity located at the exhaust port () of the exhaust pipe assembly. The water outlet () is disposed at a second end of the exhaust pipe assembly. The first part of the water inlet cavity () and the water counterflow cavity each communicate with the water outlet ().

Exhaust pipe assembly and engine

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Weifang, China

Chao Rong