KR19980043617U

KR19980043617U - Cooling structure of the cylinder head

Info

Publication number: KR19980043617U
Application number: KR2019960056736U
Authority: KR
Inventors: 김규완
Original assignee: 박병재; 현대자동차 주식회사
Priority date: 1996-12-26
Filing date: 1996-12-26
Publication date: 1998-09-25

Abstract

본 고안의 목적은 엔진의 운전조건에 맞추어 실린더헤드에 공급되는 냉각수의 유속 및 유동특성이 적합하게 조정되어 냉각 효율을 증대시킨 냉각 구조를 제공하는데 있다.An object of the present invention is to provide a cooling structure in which the flow rate and flow characteristics of the coolant supplied to the cylinder head are appropriately adjusted according to the operating conditions of the engine to increase the cooling efficiency.

상기한 목적을 달성하기 위하여 본 고안은 실린더블록으로부터 가스켓을 관통하여 실린더헤드의 워터재킷에 연통하는 냉각수통로와;In order to achieve the above object, the present invention includes a cooling water passage passing through a gasket from the cylinder block to communicate with the water jacket of the cylinder head;

상기 냉각수통로의 도중에 삽입되는 금속케이스와;A metal case inserted in the middle of the cooling water passage;

상기 케이스 내에 냉각수온에 따라 직경이 축소되거나 또는 확장되는 냉각수 통로가 형성되어 있는 왁스체와; 로 구성되는 것을 특징으로 한다.A wax body in which a cooling water passage is formed, the diameter of which is reduced or expanded in accordance with the cooling water temperature; Characterized in that consists of.

Description

Cooling structure of the cylinder head

본 고안은 실린더헤드의 냉각 효율을 증대시키기 위한 냉각구조 개선에 관한 것이다.The present invention is directed to improving the cooling structure for increasing the cooling efficiency of the cylinder head.

실린더블록(3)과 실린더헤드(1)는 고온의 연소가스에 노출되므로 과열되는 방지하기 위하여 워터재킷(4)을 형성하고 냉각수통로(5)를 통해 냉각수를 순환시켜 냉각하고 있다.Since the cylinder block 3 and the cylinder head 1 are exposed to a high temperature combustion gas, a water jacket 4 is formed in order to prevent overheating, and the coolant is circulated and cooled through the coolant passage 5.

그러나 상기한 냉각구조는 실린더블록(3)에 형성된 냉각수통로(5)가 가스켓(2)을 관통하여 실린더헤드(1)의 워터재킷(4)과 단순히 연통되어 있어 엔진의 저·고속 운전조건에 맞추어 효율적으로 냉각수가 실린더헤드(1)측에 공급되지 못하는 문제점이 있게 된다.However, in the above cooling structure, the cooling water passage 5 formed in the cylinder block 3 passes through the gasket 2 and simply communicates with the water jacket 4 of the cylinder head 1, so that the engine has a low and high speed operation condition. According to this, there is a problem that the cooling water cannot be efficiently supplied to the cylinder head 1 side.

이에 본 고안은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는;Therefore, the present invention has been proposed in view of the above problems, and has its purpose;

엔진의 운전조건에 맞추어 실린더헤드에 공급되는 냉각수의 유속 및 유동특성이 적합하게 조정되어 냉각 효율을 증대시킨 냉각 구조를 제공하는데 있다.The flow rate and flow characteristics of the coolant supplied to the cylinder head in accordance with the operating conditions of the engine is properly adjusted to provide a cooling structure that increases the cooling efficiency.

상기한 목적을 달성하기 위하여 본 고안은;The present invention to achieve the above object;

실린더블록으로부터 가스켓을 관통하여 실린더헤드의 워터재킷에 연통하는 냉각수통로와;A cooling water passage passing through the gasket from the cylinder block and communicating with the water jacket of the cylinder head;

도 1은 본 고안에 의한 실린더헤드의 냉각구조를 나타내는 도면1 is a view showing a cooling structure of a cylinder head according to the present invention

도 2는 종래의 실린더헤드의 냉각구조2 is a cooling structure of a conventional cylinder head

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : 실린더헤드2 : 가스켓1 cylinder head 2 gasket

3 : 실린더블록4 : 워터재킷3: cylinder block 4: water jacket

5 : 냉각수통로6 : 돌출부5: cooling water passage 6: protrusion

7 : 케이스8 : 냉각수통로7: Case 8: Cooling water passage

9 : 왁스체9: wax

이하 본 고안의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings the configuration and operation of the present invention.

도 1은 본 고안에 의한 실린더헤드의 냉각구조를 나타내는 도면으로 도면중 부호 1은 실린더헤드이며 실린더헤드(1)은 가스켓(2)을 개재하여 실린더블록(3)에 볼트 체결된다.1 is a view showing a cooling structure of a cylinder head according to the present invention, in which 1 is a cylinder head and the cylinder head 1 is bolted to the cylinder block 3 via a gasket 2.

상기 실린더블록(3)으로부터 가스켓(2)을 관통하여 실린더헤드(1)에 형성된 워터재킷(4)에 연통하는 냉각수통로(5)가 형성되어 있으며 워터펌프에서 송출되는 냉각수는 실린더블록(3)을 냉각시킨 후 냉각수통로(5)를 통하여 실린더헤드(1)의 워터재킷(4) 내로 유입되어 실린더헤드(1)를 냉각시키게 된다.The cooling water passage 5 is formed through the gasket 2 from the cylinder block 3 and communicates with the water jacket 4 formed in the cylinder head 1. The cooling water discharged from the water pump is the cylinder block 3. After cooling the liquid, it is introduced into the water jacket 4 of the cylinder head 1 through the cooling water passage 5 to cool the cylinder head 1.

상기 냉각수통로(5)의 도중, 보다 바람직하기로는 실린더블록(3)과 실린더헤드(1)의 경계부인 가스켓(2) 부위에 돌출부(6)가 양측부재(1)(3) 사이에 끼여져 움직임이 고정되는 금속재 케이스(7)가 끼워져 있으며 상기 케이스(7) 내에는 중앙으로 상하를 연통하는 냉각수통로(8)가 형성된 왁스체(9)가 내장되어 있다.In the middle of the cooling water passage (5), more preferably, the projection (6) is sandwiched between the two side members (1) (3) at the portion of the gasket (2) which is the boundary between the cylinder block (3) and the cylinder head (1). A metal case 7 in which movement is fixed is fitted, and a wax body 9 in which a cooling water passage 8 communicates vertically in the center is formed in the case 7.

상기 왁스체(9)는 열팽창 물질로 주변온도에 반응하여 팽창시엔 냉각수통로(8)의 단면적이 축소되도록 조르고 수축시엔 확장하게 되며 상기 케이스(7)는 열전도가 우수한 알루미늄 재질로 구성된다.The wax 9 is a thermally expandable material, which is tightened to reduce the cross-sectional area of the cooling water passage 8 when expanded in response to the ambient temperature, and expands upon shrinkage, and the case 7 is made of aluminum having excellent thermal conductivity.

이에 따라 엔진의 온도가 높아지게 되면 케이스(7)를 통해 내부의 왁스체(9)가 팽창하여 냉각수통로(8)를 조르게 됨으로써 일종의 오리피스 작용을 하게 되어 냉각수 통로(5)를 통하여 실린더헤드(1)의 워터재킷(4) 내로 유입되는 냉각수의 유속이 증대되어 실린더헤드(1)의 냉각효과를 높이게 되며 엔진의 온도가 낮을 때에는 왁스체(9)가 수축하여 냉각수 유입 단면적을 확대시키게 되어 냉각수의 유속이 느려지게 됨으로써 실린더헤드(1)의 과냉을 방지하게 되는 것이다.Accordingly, when the temperature of the engine increases, the wax body 9 expands through the case 7 to cope with the cooling water passage 8, thereby performing a kind of orifice action, and thus, the cylinder head 1 through the cooling water passage 5. The flow rate of the coolant flowing into the water jacket (4) increases the cooling effect of the cylinder head (1). When the engine temperature is low, the wax body (9) contracts to enlarge the coolant inflow cross-sectional area to increase the coolant flow rate. This slows down to prevent overcooling of the cylinder head 1.

이상과 같은 본 고안에 의하면 엔진의 온도 조건에 따라 온도가 높을 경우에는 실린더헤드의 워터재킷을 순환하는 냉각수의 유속을 증대시켜 냉각 효율을 높이게 되며 엔진의 온도가 낮을 경우에는 냉각수의 유속을 낮춰 실린더헤드의 과냉을 방지하게 됨으로써 냉각 효율이 운전조건에 적절하게 조정되는 효과가 있다.According to the present invention as described above, when the temperature is high according to the engine temperature condition, the cooling water circulating in the water jacket of the cylinder head is increased to increase the cooling efficiency, and when the engine temperature is low, the cooling water flow rate is lowered to reduce the cylinder. By preventing overcooling of the head, the cooling efficiency is effectively adjusted to the operating conditions.

Claims

A cooling water passage passing through the gasket from the cylinder block and communicating with the water jacket of the cylinder head;

A metal case inserted in the middle of the cooling water passage;

A wax body in which a cooling water passage is formed in the case; Cooling structure of the cylinder head, characterized in that consisting of.

The method of claim 1,

The case is a cooling structure of the cylinder head, characterized in that formed of aluminum material having excellent thermal conductivity.

The method of claim 1,

The case is a cooling structure of the cylinder head, characterized in that the projection is connected to the cooling water passage so as to be fixed between the cylinder head and the cylinder block.