]> 2026-04-04T08:02:22+02:00 Publications:Closed-loop control of EGR using ion currents 500 en <p>Two virtual sensors are proposed that use the spark-plug based ion current sensor for combustion engine control. The first sensor estimates combustion variability for the purpose of controlling exhaust gas recirculation (EGR) and the second sensor estimates the pressure peak position for control of ignition timing. Use of EGR in engines is important because the technique can reduce fuel consumption and NOx emissions, but recirculating too much can have the adverse effect with e.g. increased fuel consumption and poor driveability of the vehicle. Since EGR also affects the phasing of the combustion (because of the diluted gas mixture with slower combustion) it is also necessary to control ignition timing otherwise efficiency will be lost. The combustion variability sensor is demonstrated in a closed-loop control experiment of EGR on the highway and the pressure peak sensor is shown to handle both normal and an EGR condition.</p> 27th IASTED International Conference on Modelling, Identification, and Control, 11-13 February, 2008, Innsbruck, Austria http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:239079 Proceedings of the 27th IASTED International Conference on Modelling, Identification, and Control, MIC Conference Paper 7 Closed-loop control of EGR using ion currents 2008 2016-09-30T20:42:22Z 2457662.3627546 Closed-loop control of EGR using ion currents 500 0 plainlist list 1 [[:Publications:Closed-loop control of EGR using ion currents]] Closed-loop control of EGR using ion currents# QUERY71a02a16755acb7d11c15a93eeeb2e60 500 [2,"smw-datavalue-property-restricted-annotation-use","Publisher"] Closed-loop control of EGR using ion currents# ERR6c155b5d70b69ddb590b4f2e73389c2a 500 [2,"smw-datavalue-property-restricted-annotation-use","Author"] Closed-loop control of EGR using ion currents# ERRe24f17e090c98448f3de99d03182b7b6