Requirements and test methods of hydraulic retarder for bus
1 Scope
This standard specifies requirements and test method of hydraulic retarder for bus.
This standard is applicable to Categories M2 and M3 buses, and also serves as reference to other categories of buses.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 3730.1 Motor vehicles and trailers — Types — Terms and definitions
GB/T 3730.2 Road vehicle — Masses — Vocabulary and codes
GB/T 12534 Motor vehicles — General rules of road test method
GB/T 12536 Coastdown test method of motor vehicles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 3730.1 and GB/T 3730.2 and the following apply.
3.1
hydraulic retarder
device that provides braking efficiency for vehicles by using the resistance generated by fluid in the rotor and stator working chambers
4 Performance requirements
4.1 General requirements
4.1.1 The hydraulic retarder shall have a CAN bus interface communicating with the ABS system of the vehicle. Hydraulic retarder shall be capable of cutting off when ABS works.
4.1.2 The hydraulic retarder shall be set with working gears with different braking efficiency, and the braking torque controlled in the first gear shall not be greater than 50% of the maximum braking torque of the hydraulic retarder.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Performance requirements
5 Test methods
JT/T 890-2014 Loading performance requirements and test methods for hydraulic retarder of passenger car (English Version)
Standard No.
JT/T 890-2014
Status
valid
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
100.0
Implemented on
2014-9-1
Delivery
via email in 1 business day
Detail of JT/T 890-2014
Standard No.
JT/T 890-2014
English Name
Loading performance requirements and test methods for hydraulic retarder of passenger car
Chinese Name
客车液力缓速器装车性能要求和试验方法
Chinese Classification
Professional Classification
JT
ICS Classification
Issued by
Ministry of Transport
Issued on
2014-4-15
Implemented on
2014-9-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
100.0
Keywords
JT/T 890-2014, JT 890-2014, JTT 890-2014, JT/T890-2014, JT/T 890, JT/T890, JT890-2014, JT 890, JT890, JTT890-2014, JTT 890, JTT890
Introduction of JT/T 890-2014
Requirements and test methods of hydraulic retarder for bus
1 Scope
This standard specifies requirements and test method of hydraulic retarder for bus.
This standard is applicable to Categories M2 and M3 buses, and also serves as reference to other categories of buses.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 3730.1 Motor vehicles and trailers — Types — Terms and definitions
GB/T 3730.2 Road vehicle — Masses — Vocabulary and codes
GB/T 12534 Motor vehicles — General rules of road test method
GB/T 12536 Coastdown test method of motor vehicles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 3730.1 and GB/T 3730.2 and the following apply.
3.1
hydraulic retarder
device that provides braking efficiency for vehicles by using the resistance generated by fluid in the rotor and stator working chambers
4 Performance requirements
4.1 General requirements
4.1.1 The hydraulic retarder shall have a CAN bus interface communicating with the ABS system of the vehicle. Hydraulic retarder shall be capable of cutting off when ABS works.
4.1.2 The hydraulic retarder shall be set with working gears with different braking efficiency, and the braking torque controlled in the first gear shall not be greater than 50% of the maximum braking torque of the hydraulic retarder.
Contents of JT/T 890-2014
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Performance requirements
5 Test methods
