COMESYS EUROPE LAUNCHES HYBRID DRIVE FOR RADIATOR COOLING
Using a high ampere 24V alternator ComeSys Europe has developed a hybrid drive system for the radiator cooling fan of buses. She selected Busworld Turkey to launch this system for the European bus and coach segment.
With this new system the standard alternator is replaced by an own ComeSys brushless generator, which delivers a maximum current of 450A at top speed; at the engine cruising speed – about 1100 rpm – this generator still produces 400A, and when idling about 280A. The current is used to power a number of up to eight electric fans, each driven by a 24V brushless DC motor using 20A of current under normal conditions, and under full load some 25A. The system replaces the mechanical drive of the radiator fan from the engine, which on average consumes some 10 percent of the engine output, she calculates, while the ComeSys brushless alternator does not need any more engine power than the standard alternator. The result is a considerable saving of engine power, and thus fuel. ComeSys has already sold a number of these Advanced Thermal Management Systems (ATMS) to US bus operators. Based on their results she estimates that her ATMS can enable a reduction of the fuel consumption with just under 10 percent, and a comparable lowering of the vehicle emission.
