Retrofit Kit to Reduce NOX and PM Emissions from Diesel Engines using a Low-Pressure EGR and a DPF-System with FBC and Throttling for Active Regeneration without Production of Secondary Emissions

Yves Hohl; Alois Amstutz; Chris Onder; Lino Guzzella; Andreas Mayer

doi:10.4271/2008-01-0330

2008-04-14

Retrofit Kit to Reduce NOX and PM Emissions from Diesel Engines using a Low-Pressure EGR and a DPF-System with FBC and Throttling for Active Regeneration without Production of Secondary Emissions 2008-01-0330

This paper discusses the possibility of equipping Euro 3 and older vehicles with a universal retrofit kit to reduce the NO_X and the PM emissions without producing any secondary effect.

Out of several configurations, the optimal setup for EGR and DPF regeneration was evaluated and tested on a passenger car engine testbench. Stationary results showed that with a low pressure EGR it was possible to reduce the NO_X emissions by more than 50%, and the filtration efficiency of the DPF was greater than 99%.

After various dynamic tests on the test bench to improve the control algorithm, the system was designed to be installed on a garbage truck.

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Retrofit Kit to Reduce NOX and PM Emissions from Diesel Engines using a Low-Pressure EGR and a DPF-System with FBC and Throttling for Active Regeneration without Production of Secondary Emissions 2008-01-0330

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