Clutch master cylinder of automobile
1 Scope
This document specifies the terms and definitions, technical requirements, and test methods of clutch master cylinder of automobile (hereinafter referred to as the "master cylinder").
This document is applicable to the clutch master cylinder of automobile.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 10125 Corrosion tests in artificial atmospheres - Salt spray tests
GB 12981 Motor vehicle brake fluids
GB/T 41481 Road vehicles - Cleanliness of components and systems
QC/T 307 Performance requirements and bench test methods of vacuum booster for automobile
QC/T 1125 Automotive clutch terminology and definition
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
maximum stroke
distance that the piston moves from its initial position to its limit position
3.2
initial pressure-building travel
distance that the piston moves from its initial position to the position where the pressure of hydraulic chamber is 0.1MPa
3.3
ideal stroke
distance that the piston moves from its initial position to the position where the channel (such as the center valve or compensating hole) between the storage chamber and the hydraulic chamber of the master cylinder begins to close
3.4
the point of initial assistant force
downward turning point of the characteristic line under different air source pressures in the input-output characteristic curve of a master cylinder with assistance force
3.5
the point of maximal assistant force
upward turning point of the characteristic line under different air source pressures in the input-output characteristic curve of a master cylinder with assistance force
4 Product classification
Master cylinders are classified into three types by structural forms: Classes A, B and C. Class A is hydraulic master cylinder, as shown in Figure 1; Class B is air-assistant master cylinder, as shown in Figure 2; Class C is vacuum-assistant master cylinder, as shown in Figure 3.
Contents
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Product classification
5 Technical requirements
6 Test methods
Clutch master cylinder of automobile
1 Scope
This document specifies the terms and definitions, technical requirements, and test methods of clutch master cylinder of automobile (hereinafter referred to as the "master cylinder").
This document is applicable to the clutch master cylinder of automobile.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 10125 Corrosion tests in artificial atmospheres - Salt spray tests
GB 12981 Motor vehicle brake fluids
GB/T 41481 Road vehicles - Cleanliness of components and systems
QC/T 307 Performance requirements and bench test methods of vacuum booster for automobile
QC/T 1125 Automotive clutch terminology and definition
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
maximum stroke
distance that the piston moves from its initial position to its limit position
3.2
initial pressure-building travel
distance that the piston moves from its initial position to the position where the pressure of hydraulic chamber is 0.1MPa
3.3
ideal stroke
distance that the piston moves from its initial position to the position where the channel (such as the center valve or compensating hole) between the storage chamber and the hydraulic chamber of the master cylinder begins to close
3.4
the point of initial assistant force
downward turning point of the characteristic line under different air source pressures in the input-output characteristic curve of a master cylinder with assistance force
3.5
the point of maximal assistant force
upward turning point of the characteristic line under different air source pressures in the input-output characteristic curve of a master cylinder with assistance force
4 Product classification
Master cylinders are classified into three types by structural forms: Classes A, B and C. Class A is hydraulic master cylinder, as shown in Figure 1; Class B is air-assistant master cylinder, as shown in Figure 2; Class C is vacuum-assistant master cylinder, as shown in Figure 3.
Contents of QC/T 1011-2023
Contents
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Product classification
5 Technical requirements
6 Test methods
