Water jacket of engine cylinder head
A technology for engine cylinder heads and water jackets, which is applied in the direction of engine components, machines/engines, cylinder heads, etc., can solve the problems of slow coolant flow, poor cooling effect, water flow stagnation, etc., to achieve enhanced cooling effect and prevent flow delay Effect
Active Publication Date: 2015-03-25
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0003] In the past, the engine cylinder head water jacket generally only had one water inlet and one main water outlet. Due to the limitation of the inlet and outlet of the coolant, the flow of the coolant was relatively slow, and water stagnation was very easy to occur.
Since the water inlet is arranged at one end of the engine, the cooling effect of the other end of the engine is relatively poor
The cooling effect on the exhaust side of the cylinder head is relatively poor because there is no special coolant flow channel in the nose bridge area of the exhaust side of the cylinder head
Method used
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[0025] refer to figure 1 and figure 2 , the engine cylinder head water jacket is provided with a water inlet 2 and a main water outlet 3, and a channel with a predetermined volume is formed between the coolant inlet 2 and the water outlet (3, 4), which is used as a cooling channel and is also used Called water jacket 1, the coolant flows through them.
[0026] The water inlet 2 is located at the exhaust channel side of the water jacket, and the main water outlet 3 is located at the air inlet channel side of the water jacket. The side of the intake port is a single flow path 10 , and the side of the exhaust path is divided into an upper layer flow path 6 and a lower layer flow path 9 . The upper cooling channel communicates with the water inlet through the cooling channel 5 on the exhaust side of the cylinder head and connects to the upper flow path. There are also cooling flow paths 7 and 8 in the nose bridge area between the two exhaust passages, wherein the cooling flow ...
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The invention provides a water jacket of an engine cylinder head. The water jacket comprises a cooling liquid flow channel formed between a water inlet and a water outlet and allows cooling liquid to flow in the air cylinder head; the cooling liquid flows unidirectionally after entering the cylinder head from an exhaust-side water inlet, and thus an exhaust side is forced to be cooled down in priority; the exhaust side is provided with double flow passages up and down, and a cooling liquid flow channel is arranged in a nose bridge region of the air exhaust side to improve the cooling effect of the air exhaust side; a main water outlet is arranged on an air inlet side; and each cylinder is provided with an individual water outlet, thereby preventing dead regions, preventing cooling liquid in each region of the water jacket from delaying in flowing, and avoiding water flow dead regions. Therefore, the cylinder head cooling efficiency is improved.
Description
technical field [0001] The patent of the present invention relates to the field of engines, in particular to a cylinder head water jacket of an engine. Background technique [0002] As a key component of the engine, the cylinder head has high thermal and mechanical loads during operation. In some places where the design is improper or the cooling is insufficient, it is easy to cause local overheating, and under the action of high-frequency thermal fatigue and low-frequency thermal fatigue, it is easy to produce cracks and cause the failure of the cylinder head. Practice has shown that most of the cracks in the "nose bridge area" are caused by thermal fatigue. Therefore, reasonable and sufficient cooling of the cylinder head is required when designing the cylinder head to prevent excessive local thermal stress due to excessively high temperature or uneven temperature distribution of the cylinder head. The temperature field should be evenly distributed to reduce thermal stres...
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IPC IPC(8): F02F1/40
Inventor 靳素华姚巍杨林强王英杰欧阳彩云陈亮张应兵罗俊李欢
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD