This standard specifies the basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and storage of reduction gearbox of battery electric passenger car.
This standard is applicable to speed reduction gearbox of battery electric passenger car (hereinafter referred to as reduction gearbox).
2 Normative References
The following documents are indispensable for the application of this standard. For dated references, only the dated edition of the normative document referred to applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial Marking for Handling of Goods
GB/T 2828.1 Sampling Procedures for Inspection by Attribute - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Test
GB/T 19596 Terminology of Electric Vehicles
QC/T 568.1 Rig Testing Method for Auto Manual Transmission Assembly - Part 1: Mini-vehicle
QC/T 572 Rules for Cleanliness of Automobile - Determination Method
QC/T 573 Rules for Cleanliness of Automobile - Personnel, Articles and Environment
QC/T 575 Rules for Cleanliness of Automobile - Analysis Method of Impurity
QC/T 29063.1-2011 Technical Specification for Auto Manual Transmission Assembly - Part 1: Mini-vehicle
3 Terms and Definitions
For the purposes of this standard, the terms and definitions specified in GB/T 19596 and those listed below apply.
3.1
positive rotation
install the reduction gearbox in required mode, when the vehicle goes forward, the input shaft of reduction gearbox will be subject to positive rotation
3.2
reverse rotation
install the reduction gearbox in required mode, when the vehicle goes backward, the input shaft of reduction gearbox will be subject to reverse rotation
3.3
positive drive
in bench test, input terminal of reduction gearbox provides driving force
3.4
reverse drive
in bench test, output terminal of reduction gearbox provides driving force
3.5
differential rate
the percentage ratio of rotation speed difference between two output terminals of differential mechanism to rotation speed at input terminal of differential mechanism
3.6
coast
the mode when the input driving force of reduction gearbox is cut off, it will continue to operate under inertial effect
