MAE recently delivered an AC Motor Chassis Dynamometer System for motorcycle and ATV emissions certification to California Air Resources Board (CARB). The Motorcycle/ATV Chassis Dynamometer is intended to be used to perform emissions certification testing while performing a variety of drive cycles for motorcycles having a loaded vehicle mass between 80 – 550 kg. The dynamometer is an AC motor (absorbing/motoring) dynamometer capable of producing a load at 65 km/hr as described in CFR 40 part 86, section 529.78. The dynamometer is capable of producing loads to meet the ECE R40, ECE R47 and the CNS (Taiwan) test procedures as well as customized mode up to the performance specifications outlined. Mustang has a long history as a supplier of choice to CARB, having supplied CARB with numerous chassis dynamometer systems in the past for emissions certification purposes. MAE has multiple generations of knowledge and experience in the specialized area of AC Motor Chassis Dynamometers. Our experience dates back to 1975 and our applications range from small, high-speed motorcycle test systems to extremely large, high-torque heavy-duty vehicle test systems. When it comes to advanced dynamometer technology, precise and repeatable road load simulation, accurate speed and/or force control and sophisticated data acquisition packages, the engineers at Mustang Advanced Engineering are hard to match.