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Integrated exhaust manifold type three-cylinder machine cooling water jacket

A technology for cooling water jackets and exhaust manifolds, applied to cylinders, cylinder heads, mechanical equipment, etc., can solve problems such as uneven flow, cylinder head failure, and slow warm-up speed, and achieve good fatigue resistance and excellent durability Corrosiveness, effect that increases warm-up speed

Inactive Publication Date: 2015-04-29
IAT AUTOMOBILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the flow of cooling water on the exhaust side in the design of the water jacket is small and uneven; at the same time, in the design process of small and medium-sized engines, due to the small space, it is not easy to arrange
Its disadvantages are: (1) slow warm-up speed when the engine is cold started, high fuel consumption, and large emissions of CO and CH compounds in the exhaust gas; (2) low thermal cycle efficiency; (3) due to the limitation of the volume of the non-integrated cylinder head , the volume distribution of the cooling water jacket is compressed, resulting in insufficient and uneven cooling of the cylinder head, local overheating or high and low frequency thermal shocks, resulting in cracks, which cause the cylinder head to fail

Method used

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  • Integrated exhaust manifold type three-cylinder machine cooling water jacket
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Embodiment 1

[0015] like Figure 1~2 As shown, the integrated exhaust manifold type three-cylinder engine cooling water jacket described in this embodiment includes a cylinder head with an intake side and an exhaust side, and the exhaust side of the cylinder head has an exhaust throat 4 and exhaust port 5, and an exhaust manifold 8 is also integrated between the exhaust throat 4 and the exhaust port 5; the front end of the cylinder head has a water inlet 2, and the rear end of the cylinder head has a A water outlet 3, a cooling water channel 1 is provided between the water inlet 2 and the water outlet 3; an exhaust side water jacket 7 connected to the cooling water channel is provided at the upper end and the lower end of the exhaust manifold 8, and The air intake side of the cylinder head is provided with an air intake side water jacket 6 connected to the cooling water channel.

[0016] In this embodiment, cooling water jackets are designed on the upper and lower end surfaces of the inte...

Embodiment 2

[0018] The cylinder head described in the present invention has complex internal structures such as water channels and exhaust manifolds, so the aluminum alloy used in the cylinder head needs to have good fluidity under molten conditions. In the present invention, the composition of the alloying elements of the aluminum alloy is: 4.5-5.0wt% Si, 1.0-1.2wt% Cu, 0.45-0.50wt% Mg, 0.55-0.60wt% Mn, 0.20 -0.30 wt% Fe, 0.12-0.15 wt% Zr, 0.03-0.05 wt% Te, 0.03-0.05 wt% Sr, and the balance Al. The aluminum alloy can be prepared by melting aluminum ingots (such as Al99.90, Al99.9, Al99.85) or aluminum-based master alloys as main raw materials, adding alloy elements in a melting furnace, and using an inert gas such as N 2 etc. for purging, degassing and cleaning. Obtaining a cylinder head of a desired shape by melting and casting aluminum alloy belongs to the prior art in this field. Simply put, the molten aluminum alloy is cast into a wax mold or a metal mold to solidify. The suitable...

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Abstract

The invention relates to an integrated exhaust manifold type three-cylinder machine cooling water jacket which comprises a cylinder cover provided with an air intake side and an exhaust side. An exhaust throat and an exhaust port are formed in the exhaust side of the cylinder cover, and an exhaust manifold is further integrated between the exhaust throat and the exhaust port. A water inlet is formed in the front end of the cylinder cover, a water outlet is formed in the rear end of the cylinder cover, and a cooling water channel is formed between the water inlet and the water outlet. An exhaust side water jackets communicated to the cooling water channel are arranged at the upper end and the lower end of the exhaust manifold, and an air intake side water jacket communicated to the cooling water channel is arranged on the air intake side of the cylinder cover. By means of the cooling water jacket, the cooling uniformity on the exhaust side is improved, thermal cycle of an engine is improved, waste heat is used for preheating of a cabin, the engine warming speed is improved, friction of internal parts during cold starting is reduced, and oil consumption of the engine is reduced.

Description

technical field [0001] The invention relates to the technical field of structural design of automobile engines, more specifically, the invention relates to a cooling water jacket for an integrated exhaust manifold type three-cylinder engine. Background technique [0002] In the prior art, the flow of cooling water on the exhaust side in the water jacket design is small and uneven; at the same time, in the design process of small and medium-sized engines, it is not easy to arrange due to the small space. Its disadvantages are: (1) slow warm-up speed when the engine is cold started, high fuel consumption, and large emissions of CO and CH compounds in the exhaust gas; (2) low thermal cycle efficiency; (3) due to the limitation of the volume of the non-integrated cylinder head , the volume distribution of the cooling water jacket is compressed, resulting in insufficient and uneven cooling of the cylinder head, local overheating or high and low frequency thermal shocks and cracks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/42F02F1/40C22C21/02
CPCF02F1/243F02F1/40F02F1/42F02F2200/06F05C2201/903
Inventor 吴镜明宣奇武缪孟阳姚得志乞志刚
Owner IAT AUTOMOBILE TECH
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