Cooling structure for internal combustion engine

A technology of cooling structure and internal combustion engine, applied in the direction of engine cooling, liquid cooling, mechanical equipment, etc., can solve problems such as the inability of cooling water to flow, and achieve the effect of reducing pressure loss and friction

Active Publication Date: 2011-05-25
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the cooling structure of the above-mentioned existing internal combustion engine, the communication between the water jacket of the cylinder block and the water jacket of the cylinder head is restricted by the water hole of the gasket, which may cause the cooling water to fail to flow smoothly between the two water jackets.

Method used

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  • Cooling structure for internal combustion engine
  • Cooling structure for internal combustion engine
  • Cooling structure for internal combustion engine

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Embodiment Construction

[0031] Below, according to Figure 1 to Figure 12 Embodiments of the present invention will be described.

[0032] Such as figure 1 As shown, in the cylinder block 11 of the in-line 4-cylinder internal combustion engine, four cylinder liners 12... are buried along the cylinder line L1, and the water jacket 13 is formed so as to surround the outer peripheral surfaces of these cylinder liners 12.... The cylinder block 11 of the present embodiment is a Siamese type cylinder block, which does not form a water jacket 13 between adjacent cylinder liners 12 . shorten. A water jacket 13 opened to a deck surface 11a of the cylinder block 11 extends downward at a certain depth from the deck surface 11a toward the crankcase side, and is disposed between an inner wall surface 13a and an outer wall surface 13b of the water jacket 13. There is a spacer 14 made of synthetic resin inserted from the opening side of the plate surface 11 a of the cylinder block 11 .

[0033] In addition, "up...

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Abstract

The invention provides a cooling structure for an internal combustion engine. An object of the present invention is to minimize loss of the pressure of the cooling water, which occurs due to the spacer accommodated in the water jacket of the cylinder block, when the cooling water is supplied and discharged to the water jacket of the cylinder block. A spacer (14) fitted inside a water jacket (13) which is formed to surround peripheries of cylinder bores (12a) in a cylinder block (11) of an internal combustion engine includes: a spacer main body part (14a) partitioning the water jacket (13) into an upper cooling water passage (13c) and a lower cooling water passage (13d); and a cooling water outlet and inlet port part (14b, 14c) continuing to the spacer main body part (14a). A center of a thickness of the cooling water outlet and inlet port part (14b, 14c) is offset in a radial direction from a center of a thickness of the spacer main body part (14a). Accordingly, when cooling water passes the cooling water outlet and inlet port part (14b, 14c), the pressure loss can be reduced in such a way that the cooling water outlet and inlet port part (14b, 14c) does not interfere with the passage.

Description

technical field [0001] The present invention relates to a cooling structure of an internal combustion engine, wherein a spacer is installed inside a water jacket formed to surround the cylinder bore of a cylinder block of the internal combustion engine, and the spacer is used to The flow of cooling water in the water jacket is adjusted to control the cooling state of the cylinder bore. Background technique [0002] In such a cooling structure of an internal combustion engine, the following structure is known in the following patent document 1: by making the position of the water hole of the gasket, which communicates with the water jacket of the cylinder block and the water jacket of the cylinder head, relatively The thickness center of the spacer arranged in the water jacket of the cylinder block is shifted radially outward, so that when the cooling water is supplied from the water jacket of the cylinder head to the water jacket of the cylinder block through the water hole ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P3/02F02F1/14F02F1/16
CPCF01P2003/021F02F1/14
Inventor 桥本尚之中岛敦古川和也
Owner HONDA MOTOR CO LTD
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