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2. Trailer brake controller - Wikipedia

   en.wikipedia.org/wiki/Trailer_brake_controller

   The trailer in this case usually has either electric friction brakes or electric-hydraulic trailer brake actuators. Most basic brake controllers will generally have a plus-minus gain adjustment. The tow vehicle operator sets the gain as high as possible but without the trailer brakes locking up after making a few test stops.

3. Electrohydraulic servo valve - Wikipedia

   en.wikipedia.org/wiki/Electrohydraulic_servo_valve

   A servo valve receives pressurized hydraulic fluid from a source, typically a hydraulic pump. It then transfers the fluid to a hydraulic cylinder in a closely controlled manner. Typically, the valve will move the spool proportionnaly to an electrical signal that it receives, indirectly controlling flow rate.

4. Category:Hydraulic actuators - Wikipedia

   en.wikipedia.org/wiki/Category:Hydraulic_actuators

   Pages in category "Hydraulic actuators" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. C. Hydraulic cylinder; M.

5. Electro-hydraulic actuator - Wikipedia

   en.wikipedia.org/wiki/Electro-hydraulic_actuator

   Electro-hydraulic actuators (EHAs), replace hydraulic systems with self-contained actuators operated solely by electrical power. EHAs eliminate the need for separate hydraulic pumps and tubing, because they include their own pump, [1] simplifying system architectures and improving safety and reliability. This technology originally was developed ...

6. Hydraulic brake - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_brake

   Knox Motors Co. used hydraulic brakes in 1915, in a Tractor unit. [1] Malcolm Loughead (who later changed the spelling of his name to Lockheed) invented hydraulic brakes, which he patented in 1917. [2] [3] "Lockheed" is a common term for brake fluid in France.

7. Overrun brake - Wikipedia

   en.wikipedia.org/wiki/Overrun_brake

   Some systems have a ball hitch that is normally straight, but when the lead vehicle starts braking, the trailer pushes forward on the ball hitch, pitching it up which then activates a variable hydraulic brake system. Upon activating the trailer slows down pulling back on the hitch again, making it level then that shuts off the braking system.