GB/T 23341.1-2018 PDF English
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| GB/T 23341.1-2018 | English | 230 |
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Turbochargers - Part 1: General requirements
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| GB/T 23341.1-2009 | English | 70 |
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Turbochargers -- Part 1: General requirements
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GB/T 23341.1-2018: Turbochargers - Part 1: General requirements---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT23341.1-2018
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.020
J 91
Replacing GB/T 23341.1-2009
Turbochargers - Part 1.General requirements
Issued on. FEBRUARY 06, 2018
Implemented on. SEPTEMBER 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Technical requirements... 10
5 Inspection items... 15
6 Inspection rules... 16
7 Marking, packaging, transportation and storage... 17
Foreword
GB/T 23341 "Turbochargers" consists of the following two parts.
- Part 1.General requirements;
- Part 2.Test methods.
This Part is Part 1 of GB/T 23341.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 23341.1-2009 "Turbochargers - Part 1.General requirements".
Compared with GB/T 23341.1-2009, in addition to the editorial modifications, the main
technical changes are as follows.
- Modify the normative references (see Chapter 2 of this Edition, Chapter 2 of
Edition 2009);
- Modify the terms and definitions (see Chapter 3 of this Edition, Chapter 3 of
Edition 2009);
- Modify the technical requirements (see Chapter 4 of this Edition, Chapter 4 of
Edition 2009);
- Modify the inspection items (see Chapter 5 of this Edition, Chapter 5 of Edition
2009);
- Modify the inspection rules (see Chapter 6 of this Edition, Chapter 5 of Edition
2009).
This Part was proposed by China Machinery Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee on Internal
Combustion Engine of Standardization Administration of China (SAC/TC 177).
The drafting organizations of this Part. Hunan Tianyan Machinery Co., Ltd., Shanghai
Internal Combustion Engine Research Institute, Kunming Yunnei Power Co., Ltd.,
Shanghai Automotive Group Co., Ltd. Commercial Vehicle Technology Center,
Changzhou Pingjiang Electric Equipment Co., Ltd., Ningbo Weifu Tianli
Supercharging Technology Co., Ltd., Wuxi Kebo Turbocharger Co., Ltd., Zhejiang
Jinfeng Auto Parts Manufacturing Co., Ltd.
Main drafters of this Part. Hu Liaoping, Ji Weibin, Xia Yueli, Liu Shiyuan, Qiao
Liangliang, Liu Lin, Sui Zhenhua, Bi Jinguang, Shen Yan, Dai Zhihui, Dai Hua, Chen
Liqiong, Wu Tao, Wang Jian.
Version of standard substituted by this Part is.
- GB/T 23341.1-2009.
Turbochargers - Part 1.General requirements
1 Scope
This Part of GB/T 23341 specifies the terms and definitions, technical requirements,
inspection items, inspection rules, marking, packaging, transportation and storage for
the radial and mixed-flow turbochargers (hereinafter referred to as "the supercharger").
This Part applies to the superchargers for internal combustion engines (including diesel
engines, gasoline engines, natural gas engines) for vehicles, ships, construction
machinery, agricultural and forestry machinery, power generation and other purposes.
This Part does not apply to axial-flow superchargers.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 727, Turbocharger nomenclature and code
GB/T 1804-2000, General tolerances - Tolerances for linear and angular
dimensions without individual tolerance indications
GB/T 2828.1, Sampling procedures for inspection by attributes - Part 1.Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 6414, Castings - Dimensional tolerances and geometrical tolerances and
machining allowances
GB/T 25364.1-2010, Turbocharger seal rings - Part 1.General specifications
GB/T 26549-2011, Turbocharger variable nozzle ring - General specifications
JB/T 6002-2007, Turbochargers. Limit values and measurement methods for
cleanliness
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 basic turbocharger
The parent-type supercharger that is newly developed according to the new product
R&D program and has been approved.
3.2 transformed turbocharger
The supercharger that the structure is the same as the basic supercharger, only the
through-flow parts or installation and connection dimensions of the compressor or
turbine are changed.
3.3 benchmark curve
The performance curve of the basic turbocharger and its variant turbocharger that is
determined when the product is finalized.
3.4 compressor pressure ratio;
The ratio of the total pressure of the compressor outlet gas to the total pressure of
the inlet gas.
3.5 turbine expansion ratio; πT
The ratio of the turbine inlet gas total pressure to the outlet gas static pressure p2.
4 Technical requirements
4.1 General
Turbocharger products shall be manufactured according to the product drawings and
technical documents approved by the prescribed procedures.
4.2 Matching requirements for supercharger products
4.3 Supercharger manufacturing requirements
4.3.1 The compressor impeller blank of the supercharger shall comply with the
provisions of Chapter 3 of JB/T 11786-2014.
4.3.3 The nozzle ring of the supercharger shall comply with the provisions of Chapter
4 of GB/T 26549-2011.
4.3.4 The actuator of the supercharger shall comply with the provisions of Chapter 3 of
JB/T 11325-2013.
4.3.8 Before the supercharger is assembled, the parts shall be cleaned. The cleanliness
of the whole turbocharger shall comply with the provisions of Chapter 3 of JB/T 6002-
2007.
4.3.9 The supercharger assembly shall comply with the regulations of product drawings
and technical documents. The rotor shall rotate flexibly. Abnormal noise and jamming
are not allowed.
4.3.10 For superchargers with bypass valves or other adjustment mechanisms, the
operating parameters of the actuators shall be adjusted to meet the range specified in
the technical documents.
4.3.11 The appearance of the supercharger shall be kept clean. The outline shall be
complete and beautiful. There are no casting defects such as cracks and slag inclusions
on the surface of the casting. If the outer surface is painted, the paint is required to be
firm and bright. Peeling, falling-off and paint leakage are not allowed. All oil, gas and
water inlets and outlets of the supercharger shall be equipped with effective sealing
measures. The packaging shall be complete and firm.
4.4 Main performance requirements for the supercharger
4.4.1 Compressor performance of the supercharger
Under the same compressor conversion rotate speed ncnp, the compressor efficiency,
compressor pressure ratio and compressor conversion flow shall conform to the
compressor performance benchmark curve. The allowable deviation range shall comply
with the provisions of Table 2.
4.4.2 Supercharger turbine performance
Under the same turbine and similar speed, turbine efficiency, expansion ratio, and
turbine similar flow shall conform to the turbine performance benchmark curve. The
allowable deviation range shall comply with the provisions of Table 4.
4.4.9 Supercharger tightness
The tightness of the supercharger shall meet.
5 Inspection items
Turbochargers are manufactured according to approved product drawings and technical
documents. Inspect according to the content specified in Table 8.
6 Inspection rules
6.1 Exit-factory inspection
6.1.1 To ensure product quality, the inspection carried out by the manufacturer in
accordance with the technical documents before leaving the factory is called exit-
factory inspection.
6.1.2 The items of exit-factory inspection are as specified in Table 8.
6.2 Type inspection
6.2.1 Before being put into mass production, the manufacturer's inspection for the
manufacturing requirements, performance measurement and reliability test of the
supercharger with new design or major changes in the structure or material of the main
components is called type inspection.
6.3 Spot inspection
6.3.1 The inspection of the product by the manufacturer, customer or quality inspection
agency within the specified time (or batch) according to the technical documents is
called spot inspection.
6.3.2 Items for the spot inspection are according to the provisions of Table 8.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 Product marks
Each supercharger shall have a nameplate or product mark engraved on the obvious
part, including.
The contents to be marked on the outside of the packing box include.
7.2 Packaging
7.2.1 The oil inlet and outlet, air inlet and outlet, and water inlet and outlet of the
supercharger shall be equipped with caps or plugs.
Superchargers are allowed to be transported by normal vehicles. During transportation,
prevent sunlight, rain, violent collision. They shall be lightly placed and unloaded.
7.4 Storage
The supercharger shall be stored in a dry, ventilated, clean warehouse without corrosive
substances. They shall be properly kept. The oil seal is valid for one year.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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