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GB/T 1148-2024: Internal combustion engines - Aluminum pistons
Status: Valid GB/T 1148: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1148-2024 | English | 689 |
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Internal combustion engines - Aluminum pistons
| Valid |
GB/T 1148-2024
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| GB/T 1148-2010 | English | 140 |
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Internal combustion engines - Aluminium pistons - Specifications
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GB/T 1148-2010
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| GB/T 1148-1993 | English | 559 |
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Aluminium piston. Reciprocating internal combustionengines. Technical specifications
| Obsolete |
GB/T 1148-1993
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PDF similar to GB/T 1148-2024
Basic data | Standard ID | GB/T 1148-2024 (GB/T1148-2024) | | Description (Translated English) | Internal combustion engines - Aluminum pistons | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J92 | | Classification of International Standard | 27.020 | | Word Count Estimation | 34,350 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 1148-2010 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 1148-2024: Internal combustion engines - Aluminum pistons---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 27.020
CCSJ92
National Standard of the People's Republic of China
Replace GB/T 1148-2010
Aluminum piston for internal combustion engine
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Names of piston parts 4
5 Technical Requirements 7
5.1 General requirements 7
5.2 Materials 7
5.3 Dimensions and tolerances 8
5.4 Geometric tolerance 10
5.5 Surface structure quality 11
5.6 Appearance Quality 11
5.7 Piston mass 12
5.8 Piston combustion chamber volume 13
5.9 Wear-resistant insert 13
5.10 Cooling oil chamber 14
5.11 Cleanliness 15
5.12 Surface treatment 15
5.13 Piston for maintenance 15
6 Inspection methods 15
6.1 Materials 15
6.2 Metallographic structure 16
6.3 Pin hole diameter measurement 16
6.4 Geometric tolerances 16
6.5 Surface structure quality 19
6.6 Appearance Quality 19
6.7 Piston mass 19
6.8 Piston combustion chamber volume 19
6.9 Wear-resistant insert 20
6.10 Cooling oil chamber 21
6.11 Cleanliness 21
6.12 Surface treatment 21
7 Acceptance Rules22
8 Marking, packaging, transportation and storage 22
8.1 Sign 22
8.2 Packaging 22
8.3 Transportation 23
8.4 Storage 23
Appendix A (Informative) Schematic symbols and instructions 24
Figure 1 Schematic diagram of bonding rate 2
Figure 2 Wear-resistant insert ring joint surfaces 3
Figure 3 Schematic diagram of single groove ring 4
Figure 4 Schematic diagram of double groove bezel
Figure 5 Schematic diagram of various parts of the piston 6
Figure 6 Schematic diagram of circular cross-section retaining ring groove 9
Figure 7 Schematic diagram of anti-rotation positioning pin 9
Figure 8 Wear-resistant insert ring combination defects and dimensions 14
Figure 9 Schematic diagram of tensile strength sampling location 16
Figure 10 Schematic diagram of pin hole diameter measurement 16
Figure 11 Schematic diagram of measuring the verticality between the side of the ring groove and the axis of the skirt 17
Figure 12 Schematic diagram of the measurement of the circular runout of the skirt axis on the upper and lower sides of the ring groove 17
Figure 13 Schematic diagram of the coaxiality and circular runout measurement of the outer circle and the bottom circle of the ring groove 18
Figure 14 Schematic diagram of the position measurement of the pin hole axis to the skirt axis 18
Figure 15 Schematic diagram of measuring the perpendicularity of the pin hole axis to the skirt axis 19
Figure 16 Schematic diagram of the circular runout measurement of the bottom circle of the retaining ring groove to the axis of the pin hole 19
Figure 17 Schematic diagram of piston combustion chamber volume measurement 20
Figure 18 Schematic diagram of ultrasonic inspection of wear-resistant ring 21
Table 1 Names of piston parts 5
Table 2 Mechanical properties and volume stability of commonly used cast aluminum alloy materials 8
Table 3 Tolerance requirements for the outer circle of the land, the outer circle of the skirt, and the bottom circle of the ring groove 8
Table 4 Circular section retaining ring groove dimensions 9
Table 5 Anti-rotation positioning pin dimensions 9
Table 6 Piston ring groove straightness 10
Table 7 Position of the inner surface axis of the skirt to the axis of the skirt 10
Table 8 Pin hole roundness and cylindricity 11
Table 9 Vertical offset between the major axis of the ellipse and the axis of the pin hole 11
Table 10 Pin hole location hole 12
Table 11 Skirt outer circle hole 12
Table 12 Single piston quality requirements 12
Table 13 Requirements for the limit of piston quality difference in the same quality group 13
Table 14 Piston combustion chamber volume deviation requirements 13
Table 15 Wear-resistant ring bonding rate, defect size and spacing control requirements a, b 14
Table 16 Cooling oil chamber position requirements 15
Table A.1 Schematic symbols and descriptions 24
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 1148-2010 "Technical Specifications for Aluminum Pistons for Internal Combustion Engines". Compared with GB/T 1148-2010, except for the structure
In addition to adjustments and editorial changes, the main technical changes are as follows.
a) Added terms and definitions (see Chapter 3);
b) The names of some piston parts have been changed (see Chapter 4, Chapter 3 of the.2010 edition);
c) The tolerance requirements for the outer circle of the land, the outer circle of the skirt and the diameter tolerance of the bottom circle of the ring groove have been changed (see Table 3, Table 3 of the.2010 edition);
d) The requirements for pin hole diameter tolerance have been deleted [see 4.5.3a) of the.2010 edition];
e) The compression height tolerance requirements have been changed (see 5.3.4, 4.5.4 of the.2010 edition);
f) Changed the tolerance requirements for the ring groove width (see 5.3.5, 4.5.5 of the.2010 edition);
g) Added the dimensional tolerance requirements for machined valve pits and cast valve pits (see 5.3.9 and 5.3.10);
h) The geometric tolerance requirements of the ring groove have been changed (see 5.4.1~5.4.3, 4.6.1~4.6.3 of the.2010 edition);
i) Added the pin hole roundness requirement and changed the pin hole cylindricity requirement (see 5.4.9, 4.6.9 of the.2010 edition);
j) Changed the straightness requirements of the pin hole axis (see 5.4.10, 4.6.10 of the.2010 edition);
k) Changed the requirements for the roughness of the ring groove side (see 5.5.3, 4.7.3 of the.2010 edition);
l) The quality segmentation range and corresponding requirements have been changed (see 5.7, 4.9 of the.2010 edition);
m) Changed the allowable deviation requirements for combustion chamber volume (see 5.8, 4.10 of the.2010 edition);
n) Changed the requirements and test methods for wear-resistant inserts (see 5.9 and 6.9, 4.13 and 5.7 of the.2010 edition);
o) Changed the requirements and test methods for the cooling oil cavity (see 5.10 and 6.10, 4.14 and 5.8 of the.2010 edition);
p) Cleanliness requirements and test methods have been changed (see 5.11 and 6.11, 4.15 and 5.9 of the.2010 edition);
q) The surface treatment requirements and test methods have been changed (see 5.12 and 6.12, 4.16 and 5.10 of the.2010 edition);
r) Changed the recommended specifications and dimensions of the maintenance piston (see 5.13, 4.17 of the.2010 edition);
s) The volume stability test method has been changed (see 6.1.3, 5.3 of the.2010 edition);
t) The method for measuring the position of the skirt inner surface axis relative to the skirt axis has been changed (see 6.4.5, 5.6.5 of the.2010 edition);
u) Added surface structure quality testing method (see 6.5);
v) Added appearance quality inspection method (see 6.6);
w) Added piston mass measurement method (see 6.7);
x) Added the method for measuring the piston combustion chamber volume (see 6.8).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Internal Combustion Engines (SAC/TC177).
This document was drafted by. Binzhou Bohai Piston Co., Ltd., Hunan Jiangbin Machinery (Group) Co., Ltd., Huamin Nanpei Group Co., Ltd.
Co., Ltd., Anhui Jialaiton Piston Auto Parts Co., Ltd., Fujian Huawei Juquan Precision Technology Co., Ltd., Qufu Jinhuang Piston Co., Ltd.
Chengdu Galaxy Power Co., Ltd., Anhui Hengtai Power Technology Co., Ltd., Anqing Yade Dibo Piston Co., Ltd., Shandong Zhenting Precision
Piston Co., Ltd., Longkou Dachuan Piston Co., Ltd., Hunan Deutz Power Co., Ltd., Kunming University of Science and Technology, Ningbo Geely Luoyou Engine
Machine Parts Co., Ltd., Anhui Anhuang Machinery Co., Ltd., Jinhua Baolin Technology Co., Ltd., and Tianjin Ren'ai College.
The main drafters of this document are. Jiang Dianchang, Liu Shiying, Zhang Hongxiang, Lin Kaijing, Wang Wenfang, Chen Xiuyu, Sun Guochen, Wen Jun, Tang Junlin,
Huang Weilou, Wu Jing, Cui Guangpeng, Wang Jiangang, Lei Jilin, Zhang Wei, Huang Changwen, Chen Miaoyong, Yu Yangyang, Wang Jun, Chen Weidong.
The previous versions of this document and the documents it replaces are as follows.
---First issued as GB 1148-1982 in 1982, first revised in.1993, second revised in.2010;
---This is the third revision.
Aluminum piston for internal combustion engine
1 Scope
This document specifies the terms and definitions, names of various parts, technical requirements, inspection methods, acceptance rules and marks, packaging, etc. of aluminum pistons for internal combustion engines.
Packaging, transportation and storage.
This document is applicable to the manufacture of aluminum pistons for reciprocating internal combustion engines with a cylinder diameter not exceeding.200 mm. Aluminum pistons for other purposes refer to
implement.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 228.1 Tensile test of metallic materials Part 1.Room temperature test method
GB/T 893 Circlips for holes
GB/T 1149.1-2008 Internal combustion engine piston rings Part 1.General rules
GB/T 1958-2017 Product Geometry Specification (GPS) Geometric Tolerance Testing and Verification
GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on the acceptance quality limit (AQL)
GB/T 6519 Ultrasonic testing methods for deformed aluminum and magnesium alloy products
GB/T 35388 Non-destructive testing - X-ray digital imaging testing methods
JB/T 6289 Metallographic Inspection of Cast Aluminum Pistons for Internal Combustion Engines
JB/T 14615 Cleanliness limits and determination methods for piston moving components of internal combustion engines
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Stability of volume
The percentage change in piston volume after a long period of high-temperature heating and cooling work cycle.
Note. The evaluation standard is generally expressed by the linear change rate of the piston diameter before and after heating.
3.2
The point that controls the piston skirt diameter size.
3.3
The diameter value of the piston skirt outer circle control point is the diameter value obtained by rounding off.
3.4
Parallel annular grooves on the upper and lower sides.
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