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Our first generation PLC based HEV control system has undergone rigorous testing by both end users and the government and is currently in operation on the EcoMark hybrid shuttle bus. The Denver Regional Transportation District operates the fleet of EcoMark shuttles 24x7, transporting in excess of 50,000 riders daily. Sabre Engineering's control system enables each 40,000 lb. bus to be powered by a single 2.4 liter, 4 cylinder engine running on compressed natural gas while having the ability to out accelerate a conventional diesel bus. According to Colorado State University testing, the entire bus emits only 1/60 the pollution of a conventional bus while carrying twice the passenger load. The control system provides synergistic control management of every major system including power generated, power stored, and power consumed. It also controls every minor system from hydraulics and pneumatics to the operation of the cabin doors. The system utilizes a modular and networked distributed I/O scheme to reduce the overall wiring and system cost. In addition, the system has advanced communications capability for prognostic alerts and integrated fleet management. During the rigorous testing conducted by the FTA, the control system experienced a zero defect and zero malfunction record. Mr. Robert Schmitz, president of Sabre Engineering, designed the control system and its software which resulted in four US patents with more pending for the innovative and adaptive control system and its methods. See the live TV interview with our Principal engineer as he discusses the EcoMark Shuttle. Key benefits
One of many EcoMark buses operating in Denver, September 2002. Read what the people behind the EcoMark have to say about the outstanding product and service we provided them. Mr. Dale Hill and Mr. Mark Alspaugh |
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