The Impact of Vehicle Emissions on Air Quality at Low Ambient Temperatures 741054

Cold weather tests have been conducted on various engine components to monitor their operational modes at differing ambient temperatures. The results presented in this paper provide insight into the influence these components have on characteristic exhaust emissions at low ambient temperatures.
In addition, atmospheric pollution levels have been monitored in general across Canada and specifically by the City of Toronto, Ontario, which indicate that seasonally these levels do not increase in cold weather. This is contradictory to the motor vehicle emission performance. Reasons for this apparent contradiction are expressed in this paper.


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