GB2057091A - Cylinder liners - Google Patents

Cylinder liners Download PDF

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Publication number
GB2057091A
GB2057091A GB8024067A GB8024067A GB2057091A GB 2057091 A GB2057091 A GB 2057091A GB 8024067 A GB8024067 A GB 8024067A GB 8024067 A GB8024067 A GB 8024067A GB 2057091 A GB2057091 A GB 2057091A
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GB
United Kingdom
Prior art keywords
cylinder liner
ceramic material
recited
material comprises
surface roughness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8024067A
Other versions
GB2057091B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB2057091A publication Critical patent/GB2057091A/en
Application granted granted Critical
Publication of GB2057091B publication Critical patent/GB2057091B/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • F16J10/04—Running faces; Liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/16—Cylinder liners of wet type

Abstract

A cylinder liner 10 for use in an internal combustion engine comprises a ceramic material having a surface finished interior wall 11 with a surface roughness lying in the range of 0.8 S to 2 S, where "S" indicates surface roughness according to Japanese Industrial Standard B 0601. Ceramic materials specified include nitrides, oxynitrides, carbides, carbonitrides and glass-ceramics. <IMAGE>

Description

SPECIFICATION Cylinder liner for an internal combustion engine The present invention relates to a ceramic cylinder liner for an internal combustion engine.
A combustion chamber for an internal combustion engine made of ceramic material is illustrated on pages 915-916 of "CERAMICS FOR HIGH PERFORMANCE APPLICATIONS--II" published in 1978 by Brook Hill Publishing Company. However, it has been found to be necessary to improve the design of the cylinder liner from that shown in this publication.
Accordingly, the present invention seeks to provide a cylinder liner made of ceramic material which exhibits good wear resistance.
The present invention also seeks to provide a cylinder liner made of ceramic material which exhibits good heat resistance, and good resistance to mechanical stress.
These and other objects have now been attained in the present invention by providing a cylinder liner made of ceramic material with an internal wall which is designed to have a surface roundness ranging between 0.8 S and 2 S where "S" indicates surface roughness according to Japanese Industrial Standard B0601.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawings, wherein: Figure 1 is a sectional view of a cylinder liner according to the present invention; and Figure 2 is a top plan view of a cylinder liner according to the present invention.
Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, and more particularly to Figure 1 and Figure 2 thereof, a cylinder line 10 is illustrated which includes an interior wall 11.
The cylinder liner for an internal combustion engine, of the present invention, is made of ceramic material, and designed to have a surface roughness of the interior wall of between 0.8 S and 2 S, where the dimension "S" is used to indicate the surface roughness according to the Japanese Industrial Standard B 0601.
Where a cylinder liner is made of ceramic material, it is difficult to improve the surface condition as compared with a cylinder liner made of metal. Therefore, it is desirable to apply a surface finish to the interior wall of the ceramic cylinder liner. If the interior well of the ceramic cylinder liner is too smooth, the self-lubrication and oil-film maintenance may become insufficient. While, if the interior wall of the ceramic cylinder liner is too rough, the efficiency of the internal combustion engine may become low.
Consequently, the preferable surface roughness of the interior wall of the cylinder liner is between 0.8 S to 2 S.
The cylinder liner according to the present invention is used in applications where great resistance to heat stress is required. Therefore, preferably the cylinder liner of the present invention is made of the following materials nitride compounds such as silicon nitride, aluminum nitride, titanum nitride and zirconium nitride; oxynitride compounds such as silicon oxynitride (Si2ON2) and silicon aluminum oxynitride (SIA1 ON); carbide compounds such as silicon carbide, boron carbide, titanium carbide, and zirconium carbide; carbonitride materials such as silicon nitride-silicon carbide (Si3NA-SiC) and glassceramic materials such as MAS (Mg-Al-Si oxide) and LAS (Li-Al-Si oxide).Where, the ceramic material is silicon nitride, silicon carbide, aluminum nitride, silicon oxynitride, silicon aluminum nitride, or silicon nitride-silicon carbide. It is relatively easy to obtain a ceramic body having a flexural strength greater than 50 kg/cm2 at 8000 C. This strength is the desirable value for the cylinder liner.
EXAMPLE A powdered mixture consisting of 93% by weight of silicon nitride, 5% by weight of yttrium oxide and 2% by weight of aluminum oxide, the mean particle size thereof being 1.5, 1.6 and 1.1 microns, respectively, was prepared and added to 5% by weight of paraffin as a binder. The mixture was presintered a temperature 1 6000C and hot pressed at a temperature 1 8000C under a pressure of 300 kg/cm2 for 80 minutes in an atmosphere of nitrogen gas. The sintered body was cut to prepare test pieces for wear testing. A pin type wear test piece 10 mm in diameter and 30 mm in length, and a flattype wear test piece was 30 mm x 50 mm x 5 mm were used in the wear test. Engine oil was used as lubricant. The surface roughness of the pin-type wear test piece was varied as shown in the Table below.The specific wear rates are shown in the Table below.
The flexural strength of the sintered body was 92 kg/cm2 at 9000 C.
TABLE
Surface roughness of the flat-type piece Specific wear rate No. of Example (S) t(mm3/kg.mm) x 10-1 1 0.8 9.2 2 1.0 6.2 3 1.? 32 4 1.5 5.5 5 2.0 10.2 ref..2 3.0 15.3 ref. 2 0.5 18.2 Additionally, cylinder liners were formed using the above-mentioned powdered mixture. A cylinder liner was formed of three ring shaped hot pressed bodies. The three ring shaped bodies were composited by hot pressing. The size of each of the bodies was the same. Each ring had the following dimensions: 140 mm for the outer diameter; 130 mm for the inner diameter; and 100 mm in height.
The hot pressing for forming and compositing the ring shaped bodies was performed at a temperature of 1 7000C for 3 hours under a pressure of 350 kg/cm2 in an atmosphere of nitrogen gas. The interior walls of the cylinder liners were surface finished by grinding to have surface roughnesses of 0.8 S, 1.0 S, 1.2 S, 1.5 S and 2.0 S, respectively. The cylinder liners were set in the internal combustion engine and tested. As a result, good wear resistance was realized.

Claims (10)

1. A cylinder liner for use in an internal combustion engine comprising a ceramic material having a surface finished interior wall with a surface roughness lying in the range of 0.8 S to 2 S, where "S" indicates surface roughness according to Japanese Industrial Standard B 0601.
2. A cylinder liner as recited in Claim 1 , wherein: said ceramic material comprises at least one material selected from the group consisting of nitride, oxynitride, carbide, carbonitride, and glass-ceramic.
3. A cylinder liner as recited in Claim 1, wherein: said ceramic material comprises silicon nitride.
4. A cylinder liner as recited in Claim 1, wherein: said ceramic material comprises aluminum nitride.
5. A cylinder liner as recited in Claim 1, wherein: said ceramic material comprises silicon carbide.
6. A cylinder liner as recited in Claim 1 , wherein: said ceramic material comprises silicon oxynitride.
7. A cylinder liner as recited in Claim 1, wherein: said ceramic material comprises silicon aluminum oxynitride.
8. A cylinder liner as recited in Claim 1, wherein: said ceramic material comprises silicon nitridesilicon carbide.
9. A cylinder liner as recited in Claim 1, wherein: said ceramic material comprises sintered ceramic material.
10. A cylinder liner substantially as herein described with reference to the accompanying drawings.
GB8024067A 1979-08-02 1980-07-23 Cylinder liners Expired GB2057091B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9809879A JPS5623537A (en) 1979-08-02 1979-08-02 Cylinder for internal combustion engine

Publications (2)

Publication Number Publication Date
GB2057091A true GB2057091A (en) 1981-03-25
GB2057091B GB2057091B (en) 1983-03-09

Family

ID=14210855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8024067A Expired GB2057091B (en) 1979-08-02 1980-07-23 Cylinder liners

Country Status (3)

Country Link
JP (1) JPS5623537A (en)
DE (1) DE3029163C2 (en)
GB (1) GB2057091B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046585A1 (en) * 1980-08-25 1982-03-03 Helix Technology Corporation Refrigerator with a clearance seal compressor
FR2546979A1 (en) * 1983-06-06 1984-12-07 Intevep Sa PISTON PUMP FOR FLUIDS CONTAINING HIGH CONCENTRATION OF SUSPENDED SOLID PARTICLES
FR2551499A1 (en) * 1983-09-06 1985-03-08 Ae Plc PROCESS FOR PRODUCING SOFT STEEL SHAPES FOR CYLINDERS OF INTERNAL COMBUSTION ENGINES
US4539818A (en) * 1980-08-25 1985-09-10 Helix Technology Corporation Refrigerator with a clearance seal compressor

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3134771C2 (en) * 1981-09-02 1983-10-20 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Cylinder liner for internal combustion piston engines
DE3134768C2 (en) * 1981-09-02 1984-12-20 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Piston-cylinder unit for internal combustion piston machines, in particular for gasoline and diesel engines
DE3145236C2 (en) * 1981-11-13 1984-11-22 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Process for the production of deformation-resistant oxidic protective layers
JPS5947523A (en) * 1982-09-13 1984-03-17 Toyota Motor Corp Sliding member
JPS5950223A (en) * 1982-09-14 1984-03-23 Toyota Motor Corp Sliding member
JPS5963262U (en) * 1982-10-22 1984-04-25 臼井国際産業株式会社 piston liner
JPS60204672A (en) * 1984-03-29 1985-10-16 株式会社東芝 Manufacture of ceramic powder material
JPS61226501A (en) * 1985-03-29 1986-10-08 Kyocera Corp Ceramic turbo-rotor
DE3528934A1 (en) * 1985-08-13 1987-02-26 Feldmuehle Ag SLIDING ELEMENT MADE OF CERAMIC MATERIAL
DE102008062334B4 (en) * 2008-12-15 2014-02-13 Daimler Ag Method for producing a crankcase of an internal combustion engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657078A (en) * 1969-07-30 1972-04-18 Chromium Corp Of America Method of producing cylinder liners with different degrees of roughness in high and low pressure areas
JPS5433911A (en) * 1977-08-18 1979-03-13 Toyota Motor Corp Ceramic cylinder liner for internal combustion engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046585A1 (en) * 1980-08-25 1982-03-03 Helix Technology Corporation Refrigerator with a clearance seal compressor
US4539818A (en) * 1980-08-25 1985-09-10 Helix Technology Corporation Refrigerator with a clearance seal compressor
FR2546979A1 (en) * 1983-06-06 1984-12-07 Intevep Sa PISTON PUMP FOR FLUIDS CONTAINING HIGH CONCENTRATION OF SUSPENDED SOLID PARTICLES
GB2142119A (en) * 1983-06-06 1985-01-09 Intevep Sa Piston pump for fluid suspensions
FR2551499A1 (en) * 1983-09-06 1985-03-08 Ae Plc PROCESS FOR PRODUCING SOFT STEEL SHAPES FOR CYLINDERS OF INTERNAL COMBUSTION ENGINES
TR23244A (en) * 1983-09-06 1989-07-21 Ae Plc CYLINDER SHIPES

Also Published As

Publication number Publication date
GB2057091B (en) 1983-03-09
DE3029163A1 (en) 1981-02-05
DE3029163C2 (en) 1984-05-10
JPS5623537A (en) 1981-03-05

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Legal Events

Date Code Title Description
711A Proceeding under section 117(1) patents act 1977
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950723