Influence of roof-rack, trailer etc. on automobile fuel consumption and exhaust emissions, measured on-the-road. Reprint from General emission

papers presented at the International Congress & Exposition, Detroit, Michigan, February 23-26, 1998, SP-1335, SAE technical paper 980682.
Author(s)
Lenner, M.
Year
Abstract

Fuel consumption, NO and NOx were monitored using on board apparatus during road driving at constant speeds, for a gasoline passenger car with TWC. Exhaust gas concentrations (ppm) of nitrogen oxides were translated into mass emission values (g/km) by methods previously reported. In addition to standard vehicle configuration, the experiments included driving with studded tyres, trailer roof-rack and ski-box. Also, the influence of windy conditions was studied. Generally speaking the use of extra equipment, and also higher speed, entailed raised fuel consumption. The NOx emissions, however, did not exhibit a corresponding dependence. Calculated NO2/NOx ratios (v/v) varied between 0.01 and 0.03. (A)

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Publication

Library number
981952 ST S
Source

Linköping, Swedish National Road and Transport Research Institute VTI, 1998, 7 p., 19 ref.; VTI Särtryck; No. 294 - ISSN 1102-626X

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