GB/T 23341.1-2018Turbochargers—Part 1: General requirements (English PDF)
涡轮增压器 第1部分：一般技术条件
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 6, 2018
Implementation date
September 1, 2018
Scope
GB/T 23341.1-2018 is the English-translated version of 涡轮增压器 第1部分：一般技术条件.
GB/T 23341.1-2018 is the first part of the Chinese national standard on turbochargers and gives the general requirements for radial and mixed-flow units used on diesel, gasoline and natural gas engines for vehicles, ships, construction, agricultural and forestry machinery, power generation and other purposes.
Axial-flow superchargers are excluded. It defines basic and transformed turbochargers, the benchmark curve, the compressor pressure ratio and the turbine expansion ratio.
It sets matching and manufacturing requirements for impeller blanks, nozzle rings, actuators, cleanliness, assembly and appearance, and the main performance requirements for the compressor and the turbine against their benchmark curves, together with the inspection items, the exit-factory, type and spot inspections, and marking, packaging, transportation and storage.
It replaces GB/T 23341.1-2009, was issued on 6 February 2018 and has applied since 1 September 2018.
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Document preview — GB/T 23341.1-2018
National Standard of the People's Republic of China
- ICS
- 27.020
- Classification
- J 91
- Replacing
- GB/T 23341.1-2009
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope5
- 2 Normative references5
- 3 Terms and definitions6
- 4 Technical requirements10
- 5 Inspection items15
- 6 Inspection rules16
- 7 Marking, packaging, transportation and storage17
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).
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; piT
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. […]
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. […]
7.3
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. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 727Turbocharger nomenclature and code
- GB/T 1804-2000General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
- GB/T 2828.1Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
- GB/T 6414Castings -- Dimensional tolerances and geometrical tolerances and machining allowances
- GB/T 25364.1-2010Turbocharger seal rings—Part 1:General specifications
- GB/T 26549-2011Turbocharger variable nozzle ring - General specifications
Similar standards
Editions of GB/T 23341.1
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 23341.1-2018 | Turbochargers—Part 1: General requirements | current edition | Current |
| GB/T 23341.1-2009 | Turbochargers—Part 1: General requirements | previous edition | Superseded |
This page sells the current edition, GB/T 23341.1-2018. Earlier editions are listed for reference only.
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Related Standards
GB/T 1804-2000 — General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 26549-2011 — Turbocharger variable nozzle ring - General specifications
GB/T 2828.1-2012 — Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
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