Hydraproducts Blog

Get in touch today to discuss your requirements

Call: (+44) 01452 523352

Hydraproducts Blog

rss

All the latest news and information from Hydraproducts.


Hydraulics on two wheels ben lee

Hydraulic technology is often regarded as a large scale operation, powering cranes, diggers and other construction machinery.  There are smaller applications of hydraulic technology that people use every day, mostly without even thinking about the science behind them.  Brakes on bicycles, cars and motorcycles employ hydraulic principles to effect the action of stopping the wheels, and the general public take this entirely for granted, expecting that a push on the brake pedal will stop the vehicle.


The first hydraulic brakes were developed in 1914, by Fred Duesenberg, who used them on racing cars first, later introducing the technology to passenger cars in 1921.  Unfortunately for Duesenberg, he did not patent the hydraulic brake and the invention was later credited to Malcolm Lougheed (who later changed his name to Lockheed) who patented his own version of the hydraulic brake in 1918.  These early brakes were developed further into the self-energizing hydraulic drum brake which is still in use today, although disc brakes are becoming the more popular choice.


The basic principles of hydraulics form the basis of the brake action, with the brake level or pedal providing the human input; the output takes the form of the brake calipers pressing against the drum or disc component of the brake system.  The human input component is linked to an actuating rod, which joins to the top piston of the master cylinder construction, a vital component that houses the pistons, hydraulic fluid and reservoir.  The action of pressing or squeezing the pedal (or lever) exerts force on the top piston, with the hydraulic fluid transferring this pressure to the caliper pistons which exerts a larger force against the brake drum or disc.  The fluid most commonly used in braking systems is a substance containing ethylene glycol, used for its high viscosity.

Removing the pressure from the brake pedal or lever releases a spring inside the master cylinder assembly which returns the pistons and brake calipers to their normal position.  The system is entirely closed, and fluid levels do not decrease with use or from leakage, unless there is a fault in the system.  However, brake fluid does need to be replaced over time as small amounts of water can enter the system and cause the properties of the hydraulic fluid to degrade. 


Other braking systems are used nowadays, but the hydraulic brake system developed by Duesenberg and Lockheed are still the smallest, cheapest and most efficient for many uses.





Comments are closed.

Tags

hpu hydraproducts Hydraulic Equipment hydraulic fluid hydraulic oil hydraulic power Hydraulic power packs hydraulic power units Hydraulic Pumps Hydraulic System Maintenance Hydraulic Systems Hydraulic Troubleshooting ATEX reference numbers cavitation Electrohydraulic Electrohydraulics History of Hydraulics hydraproducts hydraulic Hydraulic Circuit Design hydraulic circuit diagram hydraulic components hydraulic cylinder hydraulic cylinders hydraulic design hydraulic equipment hydraulic filters Hydraulic Fluid hydraulic fluid contamination Hydraulic fluids hydraulic hose failure hydraulic hoses Hydraulic machinery hydraulic machines hydraulic maintenance hydraulic mechanism hydraulic mechanisms Hydraulic motors Hydraulic oil hydraulic oil viscosity hydraulic parts hydraulic piston pumps Hydraulic Power hydraulic power pack hydraulic power pack uses hydraulic power packs hydraulic power systems Hydraulic power unit hydraulic power units hydraulic powered security systems hydraulic powerpacks hydraulic pump hydraulic pumps hydraulic reservoir design Hydraulic Seals hydraulic system hydraulic system design hydraulic system failure hydraulic system maintenance hydraulic system problems hydraulic system repairs hydraulic system safety hydraulic systems hydraulic tools Hydraulic Valves hydraulics Industrial Hydraulic Power Units maintaining hydraulic systems micro hydraulic power packs micro power packs Mini hydraulic power packs oil contamination remotely operated vehicles subsea equipment subsea hydraulic power units subsea hydraulics system maintenance troubleshooting hydraulic systems