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Water jacket spacer

A water jacket and baffle technology, which is applied in liquid cooling, engine components, cylinders, etc., can solve the problems of increasing piston friction, unevenness, and affecting engine fuel consumption performance, and achieves the effect of simple installation and simple structure

Inactive Publication Date: 2018-01-02
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that the bore diameter size becomes non-uniform in the axial direction in consideration of this temperature gradient, which leads to an increase in the friction of the piston, which affects the fuel consumption performance of the engine.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0056] figure 1 It is a plan view of a water-cooled engine cylinder block to which the water jacket separator according to the first embodiment of the present invention is applied, and the cylinder block is indicated by a dotted line. figure 2 yes figure 1 The cross-sectional view along line (ii)-(ii) in . image 3 It is a cross-sectional view of the water jacket separator of the first embodiment in a state detached from the water jacket.

[0057] The cylinder block 100 is formed with a plurality of holes 101 and an open deck type tank-shaped water jacket 102 surrounding the holes 101 . Between the hole 101 and the water jacket 102 is a hole wall 103 . A piston 104 is disposed in each hole 101, and the piston 104 can move axially ( figure 2 in the up and down direction) reciprocating motion.

[0058] Cooling water is supplied to the inside of the water jacket 102 through a cooling water supply passage 105 formed in the cylinder block 100 , and the cooling water inside i...

no. 2 approach

[0090] Figure 7 It is a plan view of a water-cooled engine cylinder block to which the water jacket separator according to the second embodiment of the present invention is applied, and the cylinder block is indicated by a dotted line. Figure 8 yes Figure 7 The sectional view along line (viii)-(viii) in . Figure 9 It is a cross-sectional view of the water jacket separator of the second embodiment in a state detached from the water jacket. Figure 10 It is a perspective view showing and explaining the second sealing lip of the water jacket separator of the second embodiment with a partial cross section.

[0091] In this water jacket separator 2 , a separator main body 20 is composed of a synthetic resin core material 21 and an elastic body 22 covering the surface of the synthetic resin core material 21 . These synthetic resin core material 21 and elastic body 22 are made of the same materials as the synthetic resin core material 11 and elastic body 12 of the first embodi...

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PUM

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Abstract

The objective of the present invention is to provide a water jacket spacer with which is it possible, by means of a simple configuration, to prevent the entry of cooling water between the water jacketspacer and a bore-side inner wall surface of the water jacket, and with which the work for installing the water jacket spacer inside the water jacket can be performed easily. This objective is achieved by means of a water jacket spacer (1), which is inserted into a water jacket (102) provided in a cylinder block (100) surrounding bores (101), and which adjusts the flow of cooling water flowing into the water jacket (102) from a cooling water inlet (105a) that opens on the inner wall surface of the water jacket (102), wherein a first seal lip section (13), which makes contact with the bore-side inner wall surface (102a) of the water jacket (102) and thereby seals the gap formed between the bore-side inner wall surface (102a) and the spacer main body (10), is provided on the upper end of aspacer main body (10).

Description

technical field [0001] The present invention relates to a water jacket separator, and more particularly relates to suppressing the entry of cooling water between the water jacket separator and the bore-side inner wall surface of a water jacket provided in a cylinder block of an automobile water-cooled engine etc. with a simple structure, and capable of A water jacket spacer for easy installation into the water jacket. Background technique [0002] A groove called a cooling water jacket is provided around the bore wall of a cylinder block of an automobile water-cooled engine, and the bore wall is cooled by flowing cooling water in the water jacket. [0003] The wall temperature in the hole axial direction tends to be higher on the combustion chamber side at the upper portion of the hole and lower at the crankshaft side at the lower portion of the hole. It is known that the hole inner diameter becomes non-uniform in the axial direction in consideration of this temperature gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/10F01P3/02F02F1/14
CPCF02F1/10F02F1/14F01P3/02F01P2003/021
Inventor 柳得德天野琢也
Owner NOK CORP