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- Q1779780 subject Q8229098.
- Q1779780 abstract "A retarder is a device used to augment or replace some of the functions of primary friction-based braking systems, usually on heavy vehicles. Retarders serve to slow vehicles, or maintain a steady speed while traveling down a hill, and help prevent the vehicle from "running away" by accelerating down the hill. They are not usually capable of bringing vehicles to a standstill, as their effectiveness diminishes as vehicle speed lowers. They are usually used as an additional "assistance" to slow vehicles, with the final braking done by a conventional friction braking system. As the friction brake will be used less, particularly at higher speeds, their service life is increased.Friction-based braking systems are susceptible to "brake fade" when used extensively for continuous periods, which can be dangerous if braking performance drops below what is required to stop the vehicle – for instance if a truck or bus is descending a long decline. For this reason, such heavy vehicles are frequently fitted with a supplementary system that is not friction-based.Retarders are not restricted to road motor vehicles, but may also be used in railway systems. The British prototype Advanced Passenger Train (APT) used hydraulic retarders to allow the high-speed train to stop in the same distance as standard lower speed trains, as a pure friction-based system was not viable.".
- Q1779780 thumbnail Torque-converter-cutbox-model.jpg?width=300.
- Q1779780 wikiPageExternalLink article_display.cfm?Section=ARCHI&C=Feat&ARTICLE_ID=58636&KEYWORDS=william%20peters.
- Q1779780 wikiPageExternalLink aptbrakesystem.htm.
- Q1779780 wikiPageExternalLink www.frenelsa.com.
- Q1779780 wikiPageExternalLink www.jakebrake.com.
- Q1779780 wikiPageExternalLink default.htm.
- Q1779780 wikiPageExternalLink retarder_e.htm.
- Q1779780 wikiPageExternalLink www.zelusl.com.
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- Q1779780 comment "A retarder is a device used to augment or replace some of the functions of primary friction-based braking systems, usually on heavy vehicles. Retarders serve to slow vehicles, or maintain a steady speed while traveling down a hill, and help prevent the vehicle from "running away" by accelerating down the hill. They are not usually capable of bringing vehicles to a standstill, as their effectiveness diminishes as vehicle speed lowers.".
- Q1779780 label "Retarder (mechanical engineering)".
- Q1779780 depiction Torque-converter-cutbox-model.jpg.