A Truck and Bus Chassis Dynamometer Developed for Fuels and Lubricants Research

Regulated and Non-Regulated Emissions and Fuel Economy from Conventional Diesel, Hybrid-Electric Diesel, and Natural Gas Transit Buses

“…The remaining buses were tested on 17 chassis cycles, including the six test cycles on which the other buses were tested. Other cycles employed were the New York Composite Cycle (NYComp) (Thompson et al 1990), the Central Business District Cycle (CBD) (SAE 1982), the City Suburban Heavy Vehicle Cycle (CSHVC) (Nine et al 1999), the urban segment of the European Transient Cycle (ETC-Urban) (DieselNet 2006), the Beeline Cycle (Wayne et al 2002b), the Transient mode of the Heavy Heavy-Duty Diesel Truck Schedule (HHDDTS) , the Urban Dynamometer Driving Schedule (UDDS) (CFR 2005), the King County Metro Bus Cycle (KCM) (Chandler and Walkowicz, 2006), the Arterial (ART) and Commuter (COMM) phases of SAE J1376 (SAE 1982), and an Idle mode (Khan et al 2006). Note that in this study the CSHVC was used, as a speed-time cycle, rather than the CSHVR (Nine et al 1999), which is a speed-distance route.…”

Correlation Analysis of Duty Cycle Effects on Exhaust Emissions and Fuel Economy

“…Multiple chassis dynamometer test cycles , DieselNet 2007, SAE International 1982, SAE International 2002, Schiavone et al 2002, Thompson et al 1990 were used since emissions and fuel economy are related to duty cycles. Since it is not practical to develop test cycles for all types of vehicles and driving behaviors, it is necessary to develop a limited but representative number of test cycles to mimic driving activities of realistic transit bus operation.…”

Transportable Heavy Duty Emissions Testing Laboratory and Research Program

“…These buses then were tested at half-loaded state on seventeen drive cycles, including the six test cycles on which the other five buses were tested. Other cycles employed were the New York Composite Cycle (NYComp) [12], the Central Business District Cycle (CBD) [13], the City Suburban Heavy Vehicle Cycle (CSHVC) [14], the first segment of the European Transient Cycle (ETC-Urban) [11], the Beeline Cycle [15], the Transient mode of the Heavy Heavy-Duty Truck Driving Schedule (HHDDTS) [16], the Urban Dynamometer Driving Schedule (UDDS), also known as "Test D" [1], the King County Metro Bus Cycle (KCM) [17], the Arterial (ART) and Commuter (COMM) phases of SAE J1376 [13], and an Idle mode [1818]. Some of the relevant properties of these cycles are presented in Table 2Table 2.…”