Environmental Engineering Reference
In-Depth Information
Fig. 12.3
US driving cycles for passenger cars
devices, e.g., lights and air conditioning system (SC03) [ 6 ] and for the Highway
Driving Cycle (HDC) (see Fig. 12.3 )[ 7 ].
The Start Control Cycle SC 03 is driven after the appropriate preconditioning
and subsequent 10 min holding time with the air conditioning switched on at an
ambient temperature of 35C (95F).
In the US 06 cycle, emissions are measured at high average speeds. It is used as a
''hot-start test'' at the normal test temperature of 20-30C (68-86F). The full test
consists of preconditioning the engine to a hot stabilized condition, as specified in
ยง86.132-00.
In the USA, the balance between several methods is permitted. The substitution
of different methods is possible if they contribute to the improvement of air quality
and emissions do not exceed the limits.
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