Environmental Engineering Reference
In-Depth Information
Emissions Pollutant from Diesel, Biodiesel
and Natural Gas Refuse Collection Vehicles
in Urban Areas
José M. López, Nuria Flores, Felipe Jiménez, and Francisco Aparicio
Introduction
The emission certification for heavy-duty applications is done by running engines
in an engine dynamometer, not with the complete vehicle. The rationale for this is
that a certain engine can be used for a number of different vehicle applications.
However, the interest to carry out dynamic emission testing with complete
vehicles, either on a chassis dynamometer or on the road is increasing. According
to the current directives, the measurement of emissions for the official approval of
Euro IV industrial vehicle diesel engines must be performed in accordance with
three types of test: ESC, ELR and ETC; the maximum acceptable emission values
for these tests are shown in Table
1
.
•
ESC: European Steady Cycle
•
ELR: European Load Response Test
•
ETC: European Transient Cycle
Data Collection
Vehicles Description
The refuse collection trucks are lateral loaders. Due to the severe service operation
high engine rating are required. The trucks used have difference power output, but
the same curb weight. Some of the specifications for the instrumented trucks are
presented in Table
2
.
The CNG engine was turbocharged in stoichiometric ratio with multipoint port
fuel injection and equipped with a three-way catalyst.
