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ON-ROAD COOLING SIMULATION TESTS OF COMMERCIAL VEHICLES PERFORMED BY A TRAILER WITH ELETROMAGNETIC BRAKES

Rehder, Haraldo; Rehder, Gustavo P.;

Artigo Completo:

Cooling tests of commercial vehicles are performed worldwide in a few big stationary installations provided with a chassis dynamometer and ventilators for simulation of the aerodynamic airflow. Those installations could not be built in Brazil due to economic reasons. Here, those tests are historically performed on-road (testing ground) by towing one or more trucks using their own brakes, with obvious operational problems during the tests. A Towing Trailer with an electromagnetic (EM) brake to simulate uphill, as reported before [1] and [2], was developed, partially supported by FAPESP, based on a sugarcane trailer. A laptop in the cockpit of the tractor truck registers and shows the electromagnetic (EM) brake parameters as rotation, electric voltage, current and temperatures. The force between tractor truck and the trailer measured by strain gauges in a bridge configuration as well as the speed and the position of the convoy captured by GPS are also registered and displayed on the laptop. Tests with this Trailer, performed at 20 km/h, speed usually used on cooling tests of commercial vehicles, prove the viability, the good handling and the rationality of using the Towing Trailer to test trucks up to 250 HP.

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DOI: 10.5151/engpro-simea2015-PAP166

Referências bibliográficas
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Como citar:

Rehder, Haraldo; Rehder, Gustavo P.; "ON-ROAD COOLING SIMULATION TESTS OF COMMERCIAL VEHICLES PERFORMED BY A TRAILER WITH ELETROMAGNETIC BRAKES", p. 303-311 . In: In Anais do XXIII Simpósio Internacional de Engenharia Automotica - SIMEA 2014 [=Blucher Engineering Proceedings]. São Paulo: Blucher, 2015. . São Paulo: Blucher, 2015.
ISSN 2357-7592, DOI 10.5151/engpro-simea2015-PAP166

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