Abstract This work evaluated the effect of cooled exhaust gas recirculation (EGR) on fuel consumption and pollutant emissions from a diesel engine fueled with B8 (a blend biodiesel no. 8:92% by volume), experimentally numerically. Experiments were carried out power generator varying loads 5 kW to 35 10% cold EGR ratio. Exhaust (e.g., total hydrocarbons (THCs), nitrogen oxides (NOx), carbon mono...

The objective of this research was to develop advanced diesel combustion strategies for emissions reduction in a multi-cylinder diesel engine. The engine was equipped with an electronically-controlled, common-rail fuel injection system, and an exhaust gas recirculation (EGR) system. This experimental setup allowed a wide range of operating conditions to be explored. Effects of various injector ...

This paper discusses the robust model-based fault detection filter design problem for faults in the air path of diesel engines. Two failure modes in the air path, namely, the Exhaust Gas Recirculation (EGR-Actuator) and Variable Geometry Turbocharger (VGT-Actuator) bias faults were considered. The objective of the design is the detection of failures, which is robust against model uncertainties ...

Nitrogen oxides (NOx) are besides particulate matter (PM), especially for diesel engines, the most relevant emission components. Against this background and the fact that passenger car emission legislation is permanently becoming stricter, there is still a growing interest in minimizing these pollutants. Beside the highly nonlinear behavior of engines also the tradeoff between PM and NOx is a c...

High-pressure isobaric combustion adopted in the double compression expansion engine (DCEE) has prospect to achieve higher thermal efficiency compared conventional diesel combustion. This work numerically explored effects of various injection strategies on and emission characteristics The study developed a mathematical model predict rate profile. After validations, extensive simulations were co...

Small diesel engines are widely used for commercial vehicle and passenger car applications due to their higher torque requirements, fuel economy, and better thermal efficiency. These engines are exposed to different operating and environmental conditions and hence emissions from these engines are erratic. Strategies are required to enhance performance and reduce engine-out emissions considering...

One essential part of automated diagnosis systems for SI engines is due to elements of air path system. The diagnosis task is getting more challenging by including Exhaust Gas Recirculation (EGR) which its transient effects on temperament complexity of the air-path system are quite significant. The faults occur in this subsystem can result in deviation in air-fuel ratio, which causes increased ...

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 ...