This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Development of an Alarm Device for the Moisture Content in the Hydraulic Fluid of the Automobile Brake System
Technical Paper
1999-01-0475
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The hydraulic fluid is a glycol organic compounded which exhibits high temperature characteristics. However, it is amenable to moisture. Moisture content will lower boiling temperature of the hydraulic fluid. Because the high temperature from the brake shoe area can be conducted to wheel cylinders to raise the temperature of the hydraulic fluid, high percentage of moisture content in the hydraulic fluid may result in the boiling of the fluid. The hydraulic fluid will become compressible which will cause the failure of the brake system.
In this research, an alarm device is developed which can detect moisture content in the hydraulic fluid by using the resistance measurement. When the percentage of moisture content exceeds the safe range, the device will send an alarm signal to the panel to warm the driver. It can be an inexpensive and easy-installed safety device to an automobile.
Recommended Content
| Ground Vehicle Standard | Brake Hydraulic Component Flow Rate Measurement for High Differential Pressure (>5 bar) |
| Technical Paper | Power Brake Valve With Inherent Manual Override |
| Technical Paper | Interface Pressure Distributions Through Structural Modifications |
Authors
- Shuo-Jen Lee - Department of Mechanical Engineering, Yuan-Ze Univ
- Ke-Feng Lin - Department of Mechanical Engineering, Yuan-Ze Univ
- Chung-Yun Gau - Institute of Occupational Safety and Health, Council of Labor Affairs
- Bor-Tsuen Lin - Production Engineering Department, Technical Division, China Motor Corp
Citation
Lee, S., Lin, K., Gau, C., and Lin, B., "The Development of an Alarm Device for the Moisture Content in the Hydraulic Fluid of the Automobile Brake System," SAE Technical Paper 1999-01-0475, 1999, https://doi.org/10.4271/1999-01-0475.Also In
References
- Limpert, R. Engineering Design Handbook, Analysis and Design of Automotive Brake Systems US Army Material Development and Readiness Command, DARCOM-P-706-358 1976
- Limpert Rudolf Brake Design and Safety SAE R-120 ZSBN 1-56091-261-8
- Limpert Rudolf Andraws, Dennis F. Analysis in truck accidents SAE Paper No. 870503 1987
- James O’Day Bunch, Howard M. Safety and Economic Benefits of Heavy Truck Retarder Use SAE Paper No. 811260 1981
- Vidal Andre Utilization of Hydraulic Petroleum Fluid as Brake Fluid SAE Paper No. 770849 1977
- Kawakami Akira Miyao Kanou Shinohara Akira Possibility of Predicting Vapor Lock for Hydraulic Brake Nippon Kikai Gakkai Ronbunshu, C. Hen, Transactions of the Japan Society of Mechanical Engineering, Part C v. 61 586 234237 1995
- Robert Horvath Hydraulic Power Brake System General Motors Corp. 1990
- Grabill, Paul J. Hydraulic Actuation for Medium/Heavy Trucks ACSG Engineering Bendix Crop. 1992
- Tuegel, Robert O. Medium Duty Hydraulic Brakes Wagner Electric Corp. 1992
- Motor Vehicle Brake Fluid-Passenger Cars, Multipurpose Passenger Vehicles, Trucks, Buses, and Motorcycles, and Brake Fluid Containers Motor Vehicle Safety Standard No. 116 Part 571 S 116 1991