Investigation into Fuel Economy and NOx Emissions of Light Duty Hybrid Truck in Real Traffic Conditions

2005 ◽  
Author(s):  
Yutaka Takada ◽  
Shigeru Ueki ◽  
Akira Saito
Keyword(s):  
Fuel Economy ◽  
Nox Emissions ◽  
Traffic Conditions ◽  
Light Duty ◽  
Real Traffic

Improvement of Fuel Economy by Eco-Driving with Devices for Freight Vehicles in Real Traffic Conditions

2007 ◽  
Author(s):  
Yutaka Takada ◽  
Shigeru Ueki ◽  
Akira Saito ◽  
Naoya Sawazu ◽  
Yayoi Nagatomi
Keyword(s):  
Fuel Economy ◽  
Traffic Conditions ◽  
Real Traffic ◽  
Freight Vehicles

scholarly journals Fuel economy and exhaust emissions of a diesel vehicle under real traffic conditions

2020 ◽  
Vol 8 (5) ◽  
pp. 1781-1792
Author(s):  
Jianbing Gao ◽  
Haibo Chen ◽  
Kaushali Dave ◽  
Junyan Chen ◽  
Dongyao Jia
Keyword(s):  
Fuel Economy ◽  
Exhaust Emissions ◽  
Traffic Conditions ◽  
Diesel Vehicle ◽  
Real Traffic

scholarly journals Drive cycle simulation of high efficiency combustions on fuel economy and exhaust properties in light-duty vehicles

2015 ◽  
Vol 157 ◽  
pp. 762-776 ◽  
Author(s):  
Zhiming Gao ◽  
Scott J. Curran ◽  
James E. Parks ◽  
David E. Smith ◽  
Robert M. Wagner ◽  
...  
Keyword(s):  
Fuel Economy ◽  
High Efficiency ◽  
Drive Cycle ◽  
Cycle Simulation ◽  
Light Duty ◽  
Light Duty Vehicles

Methodology to Evaluate the Fuel Economy of a Multimode Combustion Engine With Three-Way Catalytic Converter

2014 ◽  
Author(s):  
Sandro P. Nüesch ◽  
Anna G. Stefanopoulou ◽  
Li Jiang ◽  
Jeffrey Sterniak
Keyword(s):  
Fuel Economy ◽  
Combustion Engine ◽  
Catalytic Converter ◽  
Oxygen Storage ◽  
Nox Emissions ◽  
Combustion Mode ◽  
Mode Switch ◽  
Drive Cycle ◽  
Finite State ◽  
The Impact

Highly diluted, low temperature homogeneous charge compression ignition (HCCI) combustion leads to ultra-low levels of engine-out NOx emissions. A standard drive cycle, however, would require switches between HCCI and spark-ignited (SI) combustion modes. In this paper a methodology is introduced, investigating the fuel economy of such a multimode combustion concept in combination with a three-way catalytic converter (TWC). The TWC needs to exhibit unoccupied oxygen storage sites in order to show acceptable performance. But the lean exhaust gas during HCCI operation fills the oxygen storage and leads to a drop in NOx conversion efficiency. Eventually the levels of NOx become unacceptable and a mode switch to a fuel rich combustion mode is necessary in order to deplete the oxygen storage. The resulting lean-rich cycling leads to a penalty in fuel economy. In order to evaluate the impact of those penalties on fuel economy, a finite state model for combustion mode switches is combined with a longitudinal vehicle model and a phenomenological TWC model, focused on oxygen storage. The aftertreatment model is calibrated using combustion mode switch experiments from lean HCCI to rich spark-assisted HCCI and back. Fuel and emissions maps acquired in steady state experiments are used. Two depletion strategies are compared in terms of their influence on drive cycle fuel economy and NOx emissions.

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