Water jacket structure of four-cylinder two-valve diesel
A diesel engine and cylinder water jacket technology, which is applied to cylinders, cylinder heads, mechanical equipment, etc., can solve the problems of increased flow area, high exhaust temperature, and low water flow rate, so as to achieve uniform flow, reduce flow area, The effect of shortening the cylinder center distance
Inactive Publication Date: 2017-08-15
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
[0006] 3. The temperature around the nose bridge area of the cylinder head and the exhaust pipe is too high;
[0007] 4. The water jacket between the two cylinders is thicker, the flow area is enlarged, and the water flow rate is low
Method used
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[0020] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0021] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0022] Such as Figure 1 to Figure 3 As shown, a water jacket structure of a four-cylinder two-valve diesel engine according to a specific embodiment of the present invention includes a cylinder bore water jacket 1 and a cylinder head water jacket 11 . The cylinder hole water jacket 1 includes the water jacket of the first cylinder, the water jacket of the second cylinder, the water jacket of the third cylinder and the wat...
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Abstract
The invention discloses a water jacket structure of a four-cylinder two-valve diesel. The water jacket structure comprises cylinder hole water jackets and cylinder cover water jackets. The cylinder hole water jackets comprises the first cylinder water jacket, the second cylinder water jacket, the third cylinder water jacket and the fourth cylinder water jacket. A diesel thermostat is arranged in the position close to the first cylinder water jacket and the second cylinder water jacket. The height of a water jacket cavity of each cylinder hole water jacket is 70%-80% of the piston stroke. Every two adjacent cylinder hole water jackets are connected through a machined through hole. Water inlet holes corresponding to cylinder holes are formed in the bottom ends of the front sides of the cylinder hole water jackets. Water filling holes between the cylinder hole water jackets and the cylinder cover water jackets are formed in the top ends of the rear sides of the third cylinder water jacket and the fourth cylinder water jacket. The lower half portions of outer side cavities of the first cylinder water jacket and the fourth cylinder water jacket are disconnected. The water jacket structure is low in resistance, high in flow velocity, uniform in cooling and good in nose bridge area radiating.
Description
technical field [0001] The invention relates to a water jacket of a diesel engine, in particular to a water jacket structure of a four-cylinder two-valve diesel engine. Background technique [0002] The cylinder liner is the core of the diesel engine cooling system. Through the circulation of coolant, the engine can be guaranteed to work at a normal temperature, and the heat generated by the engine can be dissipated in time to improve the reliability of the cylinder block and cylinder head. However, the non-road engine body has a compact layout and complex working conditions, and high water temperature often occurs. This puts higher requirements on the cooling system of the diesel engine, and the necessary optimization and adjustment of the water jacket of the diesel engine is necessary to make the diesel engine work normally. The traditional non-road engine water jacket design is more random and unreasonable. Without systematic CFD analysis and consideration of heat dissi...
Claims
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Login to View More IPC IPC(8): F02F1/40
CPCF02F1/40
Inventor 杨淇竣陈镇培魏威曹杨军
Owner GUANGXI YUCHAI MASCH CO LTD