Ways to reduce nitrogen oxide emissions In order to comply with the increasingly tough emission standards worldwide, engine manufacturers are forced not only to substantially reduce emissions of particulate matter (PM), but also emissions of nitrogen oxides. The main approach pursued by MTU is low-emission combustion, in other words an internal engine solution. However, this means taking into a...

We address the control of the airpath of a turbocharged S.I. engine equipped with Variable Valve Timing actuators (VVT). Compared to standard configurations, the engine does not possess any external EGR (Exhaust Gas Recirculation) loop. Rather, VVT are used to produce internal EGR, providing similar beneficial effects in terms of emissions reduction. The airpath dynamics takes the form of a sin...

Stringent CAFÉ regulations along with technological advances in materials, high-pressure fuel injection and complex turbo charging systems have rekindled interest in the area of Diesel engines for passenger vehicle applications. A modern Diesel engine is not only clean and quiet but also allows comparable drivability relative to gasoline engines with considerable improvements in fuel economy. H...

A motion planning based control strategy is proposed for the airpath control of turbocharged Diesel engines using exhaust gas recirculation (EGR). The considered model uses simple balance equations. The fully actuated dynamics are easily inverted, yielding straightforward open-loop control laws. This approach is complemented by experimentally derived look-up tables to cast the drivers requests ...

Biography I pursued my under-graduate studies from NIT Bhopal, India and work under Prof. Ameenur Rehman on analysis of fuel spray pattern. After my graduation I had joined VE Commercial Vehicles Ltd. (part of the VOLVO group) and worked for 5 years in engine controls and calibration. I had lead the development of a 4-cylinder light duty Selective Catalytic Reduction (SCR) Euro IV OBDII engine ...

The dual fuel engines at part loads inevitably suffer from lower thermal efficiency and higher carbon monoxide and unburned fuel emission. This work is carried out to investigate combustion characteristics of a dual fuel (dieselgas) engine at part loads, using a single zone combustion model with detailed chemical kinetics for combustion of natural gas fuel. The authors developed software in ...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Teemu Sarjovaara Name of the doctoral dissertation Studies on Heavy Duty Engine Fuel Alternatives Publisher School of Engineering Unit Department of Energy Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 208/2015 Field of research Internal combustion engines Manuscript submitted 11 September 2015 D...