Abstract
The objective was to investigate whether the relationship between travel speed and emission is valid for speeds of over 45 km/h and for other types of roads, and to analyse the relationship between emission and steady and unsteady traffic flow in main roads. Ca. 800 measured driving patterns of 13 streets and roads were analyzed. Results showed that there is a clear relationship between emissions and travel speeds. Hydrocarbon and carbon monoxide emissions decrease when speeds increase for all types of vehicles driving up to 90 km/h. Above 90 km/h emissions increase. Emission of nitrogen oxides increases with speeds above 80 km/h, for lorries at 70 km/h. Fuel consumption follows the same trends as NO{sub x}, but at high speeds increase is weaker and at low speeds it is stronger. Diesel driven vehicles emit more particles at speeds of over 70-80 km/h. Reductions of HC, CO and NO emittance for petrol-driven cars with catalytic converters is less at high speeds on main roads, Emissions from cold engines are higher than from warm ones. Emission of HC and CO increases slightly at speeds of 80-110, and NO{sub X} emission from passenger cars increases by 14% at 80-100 km/h and by 8%
More>>
Citation Formats
Solvang Jensen, S.
Driving patterns and air pollution - in the provinces; Koeremoenstre og luftforurening - i provinsen.
Denmark: N. p.,
1992.
Web.
Solvang Jensen, S.
Driving patterns and air pollution - in the provinces; Koeremoenstre og luftforurening - i provinsen.
Denmark.
Solvang Jensen, S.
1992.
"Driving patterns and air pollution - in the provinces; Koeremoenstre og luftforurening - i provinsen."
Denmark.
@misc{etde_10140607,
title = {Driving patterns and air pollution - in the provinces; Koeremoenstre og luftforurening - i provinsen}
author = {Solvang Jensen, S}
abstractNote = {The objective was to investigate whether the relationship between travel speed and emission is valid for speeds of over 45 km/h and for other types of roads, and to analyse the relationship between emission and steady and unsteady traffic flow in main roads. Ca. 800 measured driving patterns of 13 streets and roads were analyzed. Results showed that there is a clear relationship between emissions and travel speeds. Hydrocarbon and carbon monoxide emissions decrease when speeds increase for all types of vehicles driving up to 90 km/h. Above 90 km/h emissions increase. Emission of nitrogen oxides increases with speeds above 80 km/h, for lorries at 70 km/h. Fuel consumption follows the same trends as NO{sub x}, but at high speeds increase is weaker and at low speeds it is stronger. Diesel driven vehicles emit more particles at speeds of over 70-80 km/h. Reductions of HC, CO and NO emittance for petrol-driven cars with catalytic converters is less at high speeds on main roads, Emissions from cold engines are higher than from warm ones. Emission of HC and CO increases slightly at speeds of 80-110, and NO{sub X} emission from passenger cars increases by 14% at 80-100 km/h and by 8% at 100-110 km/h. Generally it was concluded that travel speed and not the type of road is crucial to emission level, yet it is higher in relation to city streets than for main roads with the exception of NO{sub x}. Emissions on motorways are relatively low. Cars give the highest emission of HC and CO (85-90% of total) and diesel driven heavy vehicles emit more nitrogen oxides (50-60% of total)and particles. (AB).}
place = {Denmark}
year = {1992}
month = {Dec}
}
title = {Driving patterns and air pollution - in the provinces; Koeremoenstre og luftforurening - i provinsen}
author = {Solvang Jensen, S}
abstractNote = {The objective was to investigate whether the relationship between travel speed and emission is valid for speeds of over 45 km/h and for other types of roads, and to analyse the relationship between emission and steady and unsteady traffic flow in main roads. Ca. 800 measured driving patterns of 13 streets and roads were analyzed. Results showed that there is a clear relationship between emissions and travel speeds. Hydrocarbon and carbon monoxide emissions decrease when speeds increase for all types of vehicles driving up to 90 km/h. Above 90 km/h emissions increase. Emission of nitrogen oxides increases with speeds above 80 km/h, for lorries at 70 km/h. Fuel consumption follows the same trends as NO{sub x}, but at high speeds increase is weaker and at low speeds it is stronger. Diesel driven vehicles emit more particles at speeds of over 70-80 km/h. Reductions of HC, CO and NO emittance for petrol-driven cars with catalytic converters is less at high speeds on main roads, Emissions from cold engines are higher than from warm ones. Emission of HC and CO increases slightly at speeds of 80-110, and NO{sub X} emission from passenger cars increases by 14% at 80-100 km/h and by 8% at 100-110 km/h. Generally it was concluded that travel speed and not the type of road is crucial to emission level, yet it is higher in relation to city streets than for main roads with the exception of NO{sub x}. Emissions on motorways are relatively low. Cars give the highest emission of HC and CO (85-90% of total) and diesel driven heavy vehicles emit more nitrogen oxides (50-60% of total)and particles. (AB).}
place = {Denmark}
year = {1992}
month = {Dec}
}