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GB/T 35472.1-2017Test method for friction element of wet automatic transmission—Part 1:Terms and definitions (English PDF)

湿式自动变速箱摩擦元件试验方法第1部分：术语和定义

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 29, 2017

Implementation date

November 1, 2018

Scope

GB/T 35472.1-2017 is the English-translated version of 湿式自动变速箱摩擦元件试验方法第1部分：术语和定义.

GB/T 35472.1-2017 is the Chinese standard "Test method for friction element of wet automatic transmission—Part 1:Terms and definitions".

Its scope clause reads: GB/T 35472 provisions of this part of the wet automatic transmission friction element test method, brake band or other and wet friction system Related terms and definitions, symbols and their formulas.

This section applies to the inertia brake test equipment for friction element testing. Some terms also apply to drive or brake devices And other friction test equipment friction performance analysis.

Note. Appendix A gives a list of symbols for terms. Its clauses include friction system.

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Document preview — GB/T 35472.1-2017

National Standard of the People's Republic of China

ICS: 43.040.40
Classification: Q 69

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 friction system
2.1 Friction element
2.2 Friction plate
2.3 Friction surface
2.4 The total area grossarea
2.5 Net area
2.6 Effective radius

1 Scope

GB/T 35472 provisions of this part of the wet automatic transmission friction element test method, brake band or other and wet friction system

Related terms and definitions, symbols and their formulas.

This section applies to the inertia brake test equipment for friction element testing. Some terms also apply to drive or brake devices

And other friction test equipment friction performance analysis.

Note. Appendix A gives a list of symbols for terms.

2 friction system

2.1 Friction element

Friction plate and dual plate components.

2.2 Friction plate

Core plate and friction material layer.

2.3 Friction surface

The number of contact surfaces of the friction plate and the counter plate.

2.4 The total area grossarea

The area of each friction surface of the friction plate, which contains the area of the groove, hole, etc. that is not in contact with the dual plate.

2.5 Net area

The total area minus the groove, hole and other areas not in contact with the dual piece.

An = Ag-A0 (1)

In the formula.

A0 --- slot, hole and other non-contact area.

2.6 Effective radius

The distance between the center of mass of the annular friction plate and the axis of rotation.

re =

2 (r3o-r3i)

3 (r2o-r2i) (2) […]

......
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

Cited by

GB/T 35472.4-2017Test method for friction element of wet automatic transmission—Part 4: High-speed stepped power test method

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