QC/T 27-2014 in English

Bench test method of automobile clutch

1 Scope

This standard specifies the bench test method of automobile clutch (including cover assembly and clutch driven plate assembly, hereinafter referred to as “clutches”).

This standard is applicable to automobile clutches.

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.

QC/T 25-2014 Technical specification of automobile clutch

3 Terms and definitions

For the purposes of this standard, the following terms and definitions apply.

3.1

clamp load characteristic
correlation curve between the load F acting on the pressure plate and the pressure plate displacement λ in the process of loading and unloading the pressure plate, as shown in Figure 1

b) Diaphragm spring clutch cover assembly

Figure 1 Clamp load characteristic

3.2

position at nominal disc thickness
position of the pressure plate corresponding to the nominal clamping thickness of the clutch driven plate assembly during installation

3.3

clamp load at nominal disc thickness
clamp load of pressure plate on clutch driven plate assembly when at the position at nominal disc thickness during installation, which shall be calculated using Equation (1), as shown in Figure 1

Foreword iv
1 Scope
2 Normative references
3 Terms and definitions
4 General principles
5 Test methods