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Effect of Holes on Brake-Bleeding Performance Improvement in the EPB Caliper
- Source :
- International Journal of Automotive Technology. 21:319-328
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Brake-bleeding is the process of removing air bubbles present on hydraulic brake systems. In particular, the existence of air content within the EPB caliper deteriorates bleeding performance, causing a high-level compressibility of the brake fluid. This paper presents numerical and experimental investigations of the effect of holes on brake-bleeding performance improvement for three different nut-spindle models included in the driving-part model of the EPB caliper. In the present paper, compressible brake-fluid simulations with pressure rise and drop ranging in pressure from 0 to 100 bar are modelled with a transient numerical approach utilizing a three-phase mixture model and standard k-ω turbulence model. The experimental verification of the effect of the holes with a constant 2 mm diameter, determined from the simulation results, was conducted using a standard test device at Mando Corporation. In conclusion, the experimental results prove that the effect of the holes has considerable impact on the performance improvement.
- Subjects :
- Materials science
Bar (music)
Turbulence
020209 energy
Drop (liquid)
02 engineering and technology
Mechanics
Brake bleeding
law.invention
020303 mechanical engineering & transports
0203 mechanical engineering
Brake fluid
law
Automotive Engineering
0202 electrical engineering, electronic engineering, information engineering
Compressibility
Hydraulic brake
Calipers
Subjects
Details
- ISSN :
- 19763832 and 12299138
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- International Journal of Automotive Technology
- Accession number :
- edsair.doi...........0d9424eba9f585a2a251979bac799146
- Full Text :
- https://doi.org/10.1007/s12239-020-0030-y