Turbo-expander cooling for NOX control in diesel engines

The influence of advanced boosting on transient NOx control in Light Vehicle Diesel engines

2017 and 2020 will represent major milestones for the light vehicle Diesel engine in Europe and other regions that are committed to WLTP. The Diesel engines’ position as the most efficient prime mover and the need for it to be included in a balanced and aggressive CO2 roadmap is not really disputed. Diesel however faces significant challenges in WLTC / RDE to deliver low ‘real world’ engine out...

prediction of ignition delay period in d.i diesel engines

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

A New Approach for NOx Soft Sensors for the Aftertreatment of Diesel Engines

Semi-physical mean-value NOx model for diesel engine control

In this paper, a new physics-based model for the prediction of NOx emissions produced by diesel engines is presented. The aim of this work is to provide a Mean-Value Model (MVM) adapted for control design and online estimation. The proposed approach is based on the simplification of a zero-dimensional thermodynamic model. Only the main phenomena taking part in NOx formation are kept and they ar...

Assessment of Ring Injectors for Reducing NOx and PM Emissions of Diesel Engines FINAL REPORT

Transportation assume no liability for the contents or use thereof. The contents do not necessarily reflect the official views or policies of the State of California or the Department of Transportation. This report does not constitute a standard, specification, or regulation. Abstract The effects of ring injectors on the performance of a selective catalytic reduction (SCR) system have been inve...