GB/T 5620-2020 Road vehicles—Vocabulary and definition for braking of automotive vehicles and their trailers English
1 Scope
This standard defines the principal terms used in relation to the braking and braking equipment of motor vehicles and their trailers as defined in ISO 3833.
This standard it is applicable the systems or elements involved during the operation of braking, or the values characterizing the whole or a part of the operation.
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.
ISO 3833: 1977 Road vehicles - Types - Terms and definitions
ISO/TR 13487: 1997 Braking of road vehicles - Consideration on the definition of mean fully developed deceleration
3 Braking systems and equipment - General
3.1
braking equipment
all braking systems fitted to a vehicle
3.2
braking system
combination of parts which fulfill one or more of the following functions:
——control (usually to reduce) a vehicle’s speed,
——bring the vehicle to a halt or hold it stationary
3.2.1
service braking system
braking system allowing the driver to control, directly or indirectly and in a graduated manner, the speed of a vehicle during normal driving or to bring the vehicle to a halt
3.2.2
secondary braking system
braking system allowing the driver to control, directly or indirectly and in a graduated manner, the speed of a vehicle or to bring the vehicle to a halt in case of failure of the service braking system
3.2.3
parking braking system
braking system allowing a vehicle to be held stationary mechanically, even on an inclined surface, particularly in the absence of the driver
3.2.4
endurance braking system
sum of all devices in a vehicle which enable the driver, virtually without friction brake wear and tear, to reduce the speed or to travel a long descent at nearly constant speed; it may contain multiple retarders
Note: An endurance braking system may include
——energy supplying device(s);
——control device(s);
——transmission device(s),
——energy dissipation device(s), and
——auxiliary device(s).
3.2.4.1 Types of endurance braking system control devices
Foreword I
1 Scope
2 Normative references
3 Braking systems and equipment - General
4 Categories of braking system
4.1 Braking systems relating to their energy supplying device
4.2 Braking systems relating to transmission means
4.3 Braking systems relating to arrangement of transmission means
4.4 Braking systems relating to vehicle combination
5 Braking system components
6 Driver supporting control braking systems
7 Braking phenomena
7.1 Lining characteristics with potential influence on braking performance
7.2 Vehicle braking behaviour
8 Brake lining tests
9 Braking mechanics
10 Pressure
11 Additional definitions
Annex A (Normative) Brake amplification factors
Annex B (Normative) Evaluation of mean fully developed deceleration
Bibliography
Alphabetical Index
GB/T 5620-2020 Road vehicles—Vocabulary and definition for braking of automotive vehicles and their trailers English
1 Scope
This standard defines the principal terms used in relation to the braking and braking equipment of motor vehicles and their trailers as defined in ISO 3833.
This standard it is applicable the systems or elements involved during the operation of braking, or the values characterizing the whole or a part of the operation.
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.
ISO 3833: 1977 Road vehicles - Types - Terms and definitions
ISO/TR 13487: 1997 Braking of road vehicles - Consideration on the definition of mean fully developed deceleration
3 Braking systems and equipment - General
3.1
braking equipment
all braking systems fitted to a vehicle
3.2
braking system
combination of parts which fulfill one or more of the following functions:
——control (usually to reduce) a vehicle’s speed,
——bring the vehicle to a halt or hold it stationary
3.2.1
service braking system
braking system allowing the driver to control, directly or indirectly and in a graduated manner, the speed of a vehicle during normal driving or to bring the vehicle to a halt
3.2.2
secondary braking system
braking system allowing the driver to control, directly or indirectly and in a graduated manner, the speed of a vehicle or to bring the vehicle to a halt in case of failure of the service braking system
3.2.3
parking braking system
braking system allowing a vehicle to be held stationary mechanically, even on an inclined surface, particularly in the absence of the driver
3.2.4
endurance braking system
sum of all devices in a vehicle which enable the driver, virtually without friction brake wear and tear, to reduce the speed or to travel a long descent at nearly constant speed; it may contain multiple retarders
Note: An endurance braking system may include
——energy supplying device(s);
——control device(s);
——transmission device(s),
——energy dissipation device(s), and
——auxiliary device(s).
3.2.4.1 Types of endurance braking system control devices
Contents of GB/T 5620-2020
Foreword I
1 Scope
2 Normative references
3 Braking systems and equipment - General
4 Categories of braking system
4.1 Braking systems relating to their energy supplying device
4.2 Braking systems relating to transmission means
4.3 Braking systems relating to arrangement of transmission means
4.4 Braking systems relating to vehicle combination
5 Braking system components
6 Driver supporting control braking systems
7 Braking phenomena
7.1 Lining characteristics with potential influence on braking performance
7.2 Vehicle braking behaviour
8 Brake lining tests
9 Braking mechanics
10 Pressure
11 Additional definitions
Annex A (Normative) Brake amplification factors
Annex B (Normative) Evaluation of mean fully developed deceleration
Bibliography
Alphabetical Index
