The Effect of Diesel Density, Injection Technology and External Variables on the Acceleration Performance of Modern Passenger Cars 2007-01-0063
Diesel engines operate with an open-loop fuel control system and the engine torque is therefore affected by variations in the fuel density. Five vehicles, representing a range of different injection technologies, were tested on six fuels having densities ranging from 819.5 to 840.1 kg/m3 @ 15°C. The results indicated that rotary distributor-pump systems were considerably more sensitive to fuel density variations than the common-rail systems or unit-injectors. The fuel density variations caused acceleration performance deviations ranging over 7%. Various external factors (vehicle loading, air conditioner, under-inflated tires, open windows, headwinds, road gradients and different road surfaces) caused deviations in the acceleration performance of comparable magnitudes.
Citation: Yates, A. and Rabe, T., "The Effect of Diesel Density, Injection Technology and External Variables on the Acceleration Performance of Modern Passenger Cars," SAE Technical Paper 2007-01-0063, 2007, https://doi.org/10.4271/2007-01-0063. Download Citation
Author(s):
Andy D. B. Yates, Tiaan Rabe
Affiliated:
Sasol Advanced Fuels Laboratory, University of Cape Town
Pages: 12
Event:
2007 Fuels and Emissions Conference
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 2007 Transactions Journal of Engines-V116-3
Related Topics:
Diesel / compression ignition engines
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