The Trainer #143: The breakdown of brake fluid characteristics
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5 ماه پیش
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Welcome to another episode of
Welcome to another episode of “The Trainer,” brought to you by AUTEL. In this episode (#143), Motor Age Technical Editor, Brandon Steckler discussed the important role brake fluid truly has in our vehicle’s brake systems. These systems include the base brake hydraulic system, the ABS/Traction control system, and brake mitigation provided by the Advanced Driver Assist Systems (ADAS) that exist in most vehicle platforms today.
Like any hydraulic system, the automotive braking system relies on the displacement of brake fluid for component actuation. Physics works as it does because fluid cannot be compressed. With that in mind, any movement of the piston (at the master cylinder) will create a similar displacement at the actuator. Of course, the amount of output vs input is carefully engineered into the design of the brake hydraulic system and the size of the pistons in both the master cylinder and the actuators (Brake calipers and wheel cylinders) at all four corners of the vehicle.
Brake fluid DOT rating exists to ensure several criteria. These include designating the brake fluid’s ability to remain “a fluid” at both low and high temperatures. Meaning, it must also resist boiling. As brake actuator pistons are displaced by the master cylinder piston, though the brake fluid, the linings of the brake pads and/or shoes come into contact with the brake rotor and/or drum surfaces. The heat given off from the friction between them is the result of mechanical/rotational energy being converted into heat energy. This necessary transfer of energy is what allows the vehicle to slow or stop.
The heat generated cannot exceed the temperature rating of the fluid or else it will boil. Since brake fluid is hygroscopic (ability to absorb water), as it ages boils it takes on water. Of course, water boils at only 212 degrees F. When a fluid boils it becomes a gas and gasses are compressible. Meaning, that the functionality of the hydraulic system will not exist and instead of displacing actuators, the application of the brake pedal will simply compress the gasses.
The older DOT ratings are basic and don’t possess the characteristics necessary for the proper operation of today’s autonomous braking systems. The manufacturers' standards are far more stringent.
Join Brandon as he demonstrates the Autel Maxi-TPMS TS900 and its ability to easily actuate the solenoid valves in the ABS hydraulic unit. This allows any technician the reassurance that a fluid exchange not only replaces the fluid in the master cylinder, hydraulic brake lines, and actuators. But ensures the ABS hydraulic unit is free from any spent/contaminated old fluid.
#Thetrainer#143 #Autel #Brakefluidservice #Brakesystemflush #Motoragemagazine
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DID YOU KNOW? Motor Age offers a library of ASE Certification training materials. Motor Age Training's books, practice tests and video resources is edited by ASE Master Technicians with years of experience in repair processes. Each product is designed to help you prepare for and pass your ASE certification exam – GUARANTEED. CLICK HERE TO FIND OUT MORE:
https://motoragetraining.com/
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@@@@@@@@@@@@@@@@@
Due to factors beyond the control of Endeavor Business Media, it cannot guarantee against unauthorized modifications of this information or improper use of this information. Endeavor Business Media assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Endeavor Business Media recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Endeavor Business Media, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Endeavor Business Media.
The tool and/or equipment featured in this video was supplied by the manufacturer and may or may not be retained by the reviewer at no cost.
Like any hydraulic system, the automotive braking system relies on the displacement of brake fluid for component actuation. Physics works as it does because fluid cannot be compressed. With that in mind, any movement of the piston (at the master cylinder) will create a similar displacement at the actuator. Of course, the amount of output vs input is carefully engineered into the design of the brake hydraulic system and the size of the pistons in both the master cylinder and the actuators (Brake calipers and wheel cylinders) at all four corners of the vehicle.
Brake fluid DOT rating exists to ensure several criteria. These include designating the brake fluid’s ability to remain “a fluid” at both low and high temperatures. Meaning, it must also resist boiling. As brake actuator pistons are displaced by the master cylinder piston, though the brake fluid, the linings of the brake pads and/or shoes come into contact with the brake rotor and/or drum surfaces. The heat given off from the friction between them is the result of mechanical/rotational energy being converted into heat energy. This necessary transfer of energy is what allows the vehicle to slow or stop.
The heat generated cannot exceed the temperature rating of the fluid or else it will boil. Since brake fluid is hygroscopic (ability to absorb water), as it ages boils it takes on water. Of course, water boils at only 212 degrees F. When a fluid boils it becomes a gas and gasses are compressible. Meaning, that the functionality of the hydraulic system will not exist and instead of displacing actuators, the application of the brake pedal will simply compress the gasses.
The older DOT ratings are basic and don’t possess the characteristics necessary for the proper operation of today’s autonomous braking systems. The manufacturers' standards are far more stringent.
Join Brandon as he demonstrates the Autel Maxi-TPMS TS900 and its ability to easily actuate the solenoid valves in the ABS hydraulic unit. This allows any technician the reassurance that a fluid exchange not only replaces the fluid in the master cylinder, hydraulic brake lines, and actuators. But ensures the ABS hydraulic unit is free from any spent/contaminated old fluid.
#Thetrainer#143 #Autel #Brakefluidservice #Brakesystemflush #Motoragemagazine
There's lots more from Motor Age! Check out our video library at
www.youtube.com/MotorAgeMagazine?sub_...
Receive your FREE SUBSCRIPTION to Motor Age here:
https://endeavor.dragonforms.com/load...
Each issue is packed with in-depth technical articles from experts, brief tech tips and repair strategies, TSBs, and much, much more!
DID YOU KNOW? Motor Age offers a library of ASE Certification training materials. Motor Age Training's books, practice tests and video resources is edited by ASE Master Technicians with years of experience in repair processes. Each product is designed to help you prepare for and pass your ASE certification exam – GUARANTEED. CLICK HERE TO FIND OUT MORE:
https://motoragetraining.com/
FOLLOW US ON FACEBOOK: Facebook: MotorAgeMagazine
VISIT OUR WEBSITE FOR EVERYTHING AUTOMOTIVE
http://www.vehicleservicepros.com
@@@@@@@@@@@@@@@@@
Due to factors beyond the control of Endeavor Business Media, it cannot guarantee against unauthorized modifications of this information or improper use of this information. Endeavor Business Media assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Endeavor Business Media recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Endeavor Business Media, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Endeavor Business Media.
The tool and/or equipment featured in this video was supplied by the manufacturer and may or may not be retained by the reviewer at no cost.
5 ماه پیش
در تاریخ 1403/01/08 منتشر شده
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