Abstract
The emission standard of China’s non-road diesel engines is experiencing the transition period from China II to China III, and the relative non-road diesel engine emission issues need to be urgently solved. As a kind of effective after-treatment technology, a diesel particulate filter (DPF) has become increasingly important in non-road diesel engine emission research. To evaluate the emission characteristics of a non-road diesel engine retrofitted with a DPF, particulate matter (PM) and gaseous emissions emitted from a China II non-road diesel engine loaded with a DPF were investigated on the engine bench. The mass (specific emissions) and number concentrations of PM emissions were obtained by a DLS7200 mass collection system and matter CU-2 number instrument with and without a DPF, respectively. Additionally, gaseous emissions [NOx, CO, and hydrocarbon (HC)] were quantitatively analyzed with and without a DPF by a MEXA-7100EGR emission analysis chamber. Results showed that a DPF could lower the mass and ...
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