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an engine cylinder head

A technology for engine cylinders and cylinder heads, which is applied to engine components, machines/engines, cylinder heads, etc., and can solve problems such as stiffness, weak strength, and increased scrap rate

Active Publication Date: 2015-12-23
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cylinder head is a thin-walled casting part, and its rigidity and strength are relatively weak. Moreover, due to the requirements of the process, the cylinder head is generally divided into two layers with the air passage as the center to manufacture the membrane. The sand cores of the water chamber are bonded together, so that an inevitable flash is formed between the two layers of water chambers, which increases the scrap rate

Method used

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  • an engine cylinder head
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Examples

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Effect test

Embodiment 1

[0048] In the following embodiments, only technical proposals such as the water cavity in the cylinder head and the flow direction of cooling water are introduced, and no detailed description is given on the structures of each part of the cylinder head. In this embodiment, the exterior of the intake side 7 on each cylinder head is provided with a communication hole that provides cooling water to enter the upper water chamber. In other embodiments, the communication hole can also be provided on the exhaust side 6, but not The best choice of the present invention.

[0049] The water flow control inside the cylinder head of the present invention adopts double-layer control. The water chamber of the cylinder head is composed of an upper water chamber and a lower water chamber. There is a partition between the upper water chamber and the lower water chamber. ;The lower water chamber is controlled in a limited space, and its water flow speed is easy to ensure, which can strengthen t...

Embodiment 2

[0051] The water flow control inside the cylinder head of the present invention adopts double-layer control. The water chamber of the cylinder head is composed of an upper water chamber and a lower water chamber. There is a partition between the upper water chamber and the lower water chamber. ;The lower water chamber is controlled in a limited space, and its water flow speed is easy to ensure, which can strengthen the cooling of the bottom plate of the cylinder head; this is conducive to the realization of the water flow control of the cylinder head, reduces the heat load on the cylinder head, and improves the life of the cylinder head; At the same time, the partition can increase the rigidity of the cylinder head and improve the mechanical load strength of the cylinder head; the main water inlet hole is on the exhaust side of the cylinder head, and the communication hole of the two-layer water chamber is on the intake side so that all the cooling water can enter the cylinder h...

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PUM

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Abstract

The invention relates to an engine cylinder cove. A cooling water cavity is formed in the cylinder cover, the cooling water cavity of the cylinder cover is divided into an upper layer water cavity and a lower layer water cavity through a middle separating plate, cooling water enters the lower layer water cavity through a water inlet hole, a communication hole is formed between the upper layer water cavity and the lower layer water cavity, and the lower layer cooling water enters the upper layer water cavity through the communication hole. Cooling liquid can cool the bottom of the cylinder cover as much as possible in the cylinder cover, meanwhile, an upper water hole of the cylinder cover is designed below air exhaust passages, the communication hole between two layers of water sleeves is designed in the side of an air inlet passage, and therefore the cooling liquid can enter the cylinder cover from the position below the air exhaust passages, after flowing through the area between the air exhaust passages and the cylinder cover, the area between the air exhaust passages, and the area between the air exhaust passages and the air inlet passage in the cylinder cover, the cooling liquid enters the upper layer water sleeve of the cylinder cover from the air inlet side, and high-temperature areas around the air exhaust passages can be fully cooled according to the design.

Description

technical field [0001] The invention belongs to the field of automobile engines, in particular to the field of engine cylinder heads, specifically to the cooling water system of engine cylinder heads, Background technique [0002] In the design of the engine cylinder head, the air intake passage, the exhaust passage, the bolt boss and the injector installation hole are arranged on the cylinder head. In addition, a cavity is formed by the outer surface of the intake passage, exhaust passage, bolt boss and injector mounting hole and the inner surface of the cylinder head, and the cooling water flows in the cavity to cool the cylinder head and corresponding parts. The water inlet holes of the cylinder head are distributed around the cylinder block on the lower bottom surface of the cylinder head. According to actual needs, the areas in the cylinder head that most need enhanced cooling are the lower bottom surface of the cylinder head, the nose bridge area near the installation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F1/40
Inventor 张军瑞靳素华胡必谦胡志胜路明郭晓轩喻春凤郑久林
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD