T/CSAE 79-2018 in English
VALIDPerformance requirements and bench test methods for energy-regenerationautomobile hydraulic anti-lock braking system
- Issued on:2018-09-03
- Implemented on:2018-09-03
- File Format:PDF
- Delivery:Via email within 5 business days
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| Standard No: | T/CSAE 79-2018 |
| Document status: | VALID |
| Title in English: | Performance requirements and bench test methods for energy-regenerationautomobile hydraulic anti-lock braking system |
| Title in Chinese: | 能量回馈式汽车液压防抱死制动系统性能要求及台架试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2018-09-03 |
| Implemented on: | 2018-09-03 |
| Professional Classification: | T/-Social Organization Standard |
| Related Topics: | system performance requirements
cy/t 79 Feedback Braking System Braking System sample requirements System Performance Solutions return pump System Performance Solutions System Performance Requirements System Performance Requirements t/csae 312 t/csae 133 |
Introduction
Analysis of the technical framework of the standard
This standard establishes a complete technical system for the first time for the energy regenerative hydraulic anti-lock braking system (EABS), focusing on the following:
- Sealing requirements for dual accumulator architecture (LPA/MPA)
- Dynamic response indicators under rated pressure of 12MPa
- Adaptability to extreme environments from -40℃ to 120℃
Comparison of core performance indicators
| Test items | Traditional ABS | EABS | Difference analysis |
|---|---|---|---|
| Rise time | ≤180ms | ≤195ms | Increase the response delay of the pressure regulating valve |
| Working noise | ≤75dB | ≤73dB | Optimize the design of the oil return pump motor |
| Environmental temperature | -30~85℃ | -40~120℃ | Adapt to the working conditions of electric vehicles |
Key technical breakthroughs
Energy recovery pressure regulation mechanism
Through Medium pressure accumulator (MPA) and pressure regulating valve to achieve pressure regulation during brake energy recovery, with flow requirement ≥2.7mL/s (6MPa working condition).
Composite environment verification system
The standard innovatively establishes three levels of environmental verification:
- 72h continuous low-temperature operation (-40℃)
- 50 temperature shock cycles (-40℃↔120℃)
- IPX9k waterproof + dustproof composite test
Implementation suggestions
Test optimization plan
- It is recommended to use the pressure-flow synchronous acquisition system to improve the accuracy of dynamic characteristics testing
- 96h high-temperature pre-aging is required before salt spray testing
Typical failure prevention
Historical data shows that the failure rate of the switching valve is higher under low-temperature conditions. It is recommended:
- Increase valve cycle test at -40℃ to 1000 times
- Use DOT4 brake fluid to reduce freezing point risk
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