Assignee
LEVIJOKI STEPHEN PAUL
US·12 granted patents·66 citations·filing 2009–2012
Top patents by PatentIndex Score
12 records- 0192US9133750B2Method and system for verifying the operation of an SCR catalystLEVIJOKI STEPHEN PAUL·Filed 2010·Granted Sep 15, 2015·15 cites·20 claims
- 0290US8869607B2Exhaust diagnostic system and method with SCR NH3 depletion cleansing mode for initial step in the def quality service healing testLEVIJOKI STEPHEN PAUL·Filed 2012·Granted Oct 28, 2014·15 cites·20 claims
- 0388US8495862B2System and method for detecting low quality reductant and catalyst degradation in selective catalytic reduction systemsLEVIJOKI STEPHEN PAUL·Filed 2010·Granted Jul 30, 2013·9 cites·20 claims
- 0478US9234447B2System and method for determining selective catalytic reduction dosing system performance using an ammonia sensorLEVIJOKI STEPHEN PAUL·Filed 2010·Granted Jan 12, 2016·4 cites·7 claims
- 0578US9228482B2System and method for diagnosing a fault in a switchable water pump for an engine based on a change in crankshaft speedLEVIJOKI STEPHEN PAUL·Filed 2012·Granted Jan 5, 2016·2 cites·22 claims
- 0674US8869513B2Exhaust diagnostic control system and method with NH3 depletion cleansingLEVIJOKI STEPHEN PAUL·Filed 2012·Granted Oct 28, 2014·3 cites·20 claims
- 0774US8844267B2Method and system for controlling a nitrogen oxide (NOx) conversion efficiency monitorLEVIJOKI STEPHEN PAUL·Filed 2011·Granted Sep 30, 2014·5 cites·14 claims
- 0871US8286419B2Exhaust diagnostic systems and methods for resetting after operation with poor reductant qualityLEVIJOKI STEPHEN PAUL·Filed 2009·Granted Oct 16, 2012·9 cites·18 claims
- 0959US8939010B2System and method for diagnosing faults in an oxygen sensorLEVIJOKI STEPHEN PAUL·Filed 2011·Granted Jan 27, 2015·1 cites·20 claims
- 1056US9103267B2Low coolant temperature fault diagnostic systems and methodsLEVIJOKI STEPHEN PAUL·Filed 2012·Granted Aug 11, 2015·1 cites·18 claims
- 1153US8205440B2Intrusive SCR efficency testing systems and methods for vehicles with low temperature exhaust gasLEVIJOKI STEPHEN PAUL·Filed 2009·Granted Jun 26, 2012·2 cites·16 claims
- 1245US9181844B2Diagnostic system and method for an oxygen sensor positioned downstream from a catalytic converterLEVIJOKI STEPHEN PAUL·Filed 2011·Granted Nov 10, 2015·0 cites·27 claims
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