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Engine cylinder lid

A technology for engine cylinders and exhaust valves, which is applied to engine components, machines/engines, cylinder heads, etc. It can solve the problems that the high temperature parts of the cylinder head are not cooled, the water flow cannot be used more effectively, and the cooling effect is not very good. , to reduce temperature, prolong life and save energy

Inactive Publication Date: 2007-05-23
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still deficiencies in this type of cylinder head. The main performance is that the cooling water flow can only cool the intake and exhaust valves from both sides, and the water flow in the cooling water chamber cannot be used more effectively. Good cooling, not great cooling

Method used

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  • Engine cylinder lid
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Experimental program
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Embodiment Construction

[0012] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0013] As shown in Figure 3 and Figure 4, along the flow direction of the cooling water in the cylinder head (the direction in the figure is from right to left), a baffle body is added to each cylinder except the last cylinder, and the top of the baffle body is located at On the intake valve seat, along the water flow direction, it extends obliquely toward the exhaust valve seat direction of the next cylinder to near the middle of the cooling water cavity.

[0014] The height of each stall body is the same, which is 20mm. The outline shape of each stall body is different, and the water flow resistance at its location should be reduced as much as possible. The length of each gear body is different, and along the flow direction of the cooling water flow, the length of the gear body is shortened successively, and the distance be...

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PUM

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Abstract

A cylinder head comprises cooling cavity filled with flowing coolant with one side having air intake and the other side air exhaust, center blocks. The said blocks locate between the air intake and exhaust, and the said blocks guide the flow of coolant inside the cavity to the air exhaust. With this structure, it improves the cooling of the air exhaust base and reduces the air exhaust base's temperature. It also reduces the temperature of the combustion chamber and the bottom of the cylinder head, with improved cooling efficiency of unit coolant and saved water pump energy. It can also extend the durability of the cylinder, and improves the overall engine's reliability.

Description

【Technical field】 [0001] The invention relates to an engine cylinder head, in particular to an engine cylinder head including a cooling water chamber. 【Background technique】 [0002] The engine is a device that converts the chemical energy of the fuel into mechanical energy. The cylinder head of the engine seals the cylinder and forms the combustion chamber together with the top of the piston. Inside the cylinder, the fuel is periodically burned to form high-temperature and high-pressure gas, which makes the cylinder head bear a large alternating mechanical load and alternating thermal load. Since the top of the combustion chamber is directly in contact with the combustion flame of the fuel, the high-temperature exhaust gas after the high-temperature gas has done work is periodically discharged through the exhaust port, so the temperature at the top of the combustion chamber and near the exhaust port is very high, becoming the "hot spot" of the entire cylinder head; On the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/40
Inventor 袁志远辛中杰
Owner BYD CO LTD