Correlations between the coefficient of variations (COV) of ion current integrals and COV of indicated mean effective pressure (IMEP) are investigated. The investigations are made to see if there is a possibility to use ion sense technique for closed loop combustion control to maximize Exhaust Gas Recirculation (EGR) level with remaining combustion stability. The engine studied in this thesis i...

In this paper, an experimental investigation on achieving ultra-low raw emissions in a diesel/methanol dual fuel engine based dual-loop EGR was carried out. The effect of (High pressure and low EGR) the combustion, performance methanol has been studied comprehensively. results show that NO x (<0.4g/kWh) PM (<10 mg/kWh) can be achieved simultaneously diesel with help EGR. combustion phase ...

Exhaust Gas Recirculation (EGR) concept is the most simple and Abstract more economical method for NO pollutant reduction in spark ignition engines. However, when the higher amount of the EGR gas enters into the engine, the power, torque and fuel economy of the engine decrease. One effective solution for reduction of undesirable effect of this method is to use cooled EGR, that results in more r...

This paper addresses the application of high exhaust gas recirculation (EGR) for reduced nitrogen oxide emissions from diesel engines. The research objective is to develop fundamental information about the relationship between EGR parameters and diesel combustion instability and particulate formation so that options can be explored for maximizing the practical EGR limit, thereby further reducin...

The primary aim of this study is to alternate between conventional fossil fuels and reduce the emissions greenhouse gases sulphur dioxide from diesel engine. In current study, in order mitigate NOx emissions, EGR technique was implemented utilizing hybrid biodiesel at three varying proportions 5%, 10% 15% an optimum compression ratio 20:1. findings demonstrate that for a alternative 20:1 fully ...

The authors applied one-dimensional (1-D) simulation and 3-D Computational Fluid Dynamics (CFD) simulation to evaluate the potential of in-cylinder control methods on a low-speed 2-stroke marine engine to reach the International Maritime Organization (IMO) Tier 3 NOx emissions standards. Reducing the combustion temperature is an important in-cylinder measure to decrease NOx emissions of marine ...

We present a computational tool to develop an exhaust gas recirculation (EGR) – air-fuel ratio (AFR) operating range for homogeneous charge compression ignition (HCCI) engines. A single cylinder Ricardo E-6 engine running in HCCI mode, with external EGR is simulated using an improved probability density function (PDF) based engine cycle model. For a base case, the incylinder temperature and unb...

The amount of pollutant gases in the atmosphere has reached a critical state due to an increase in industrial development and the rapid growth of automobile industries that use fossil fuels. The combustion of fossil fuels produces harmful gases such as carbon dioxide, nitrogen monoxide (NO), soot, particulate matter (PM), etc. The use of Dimethyl Ether (DME) biofuel in diesel engines or other c...

There is a potential for synergy effects in utilizing CO2 both enhanced gas recovery (EGR) and geothermal energy extraction (CO2-plume geothermal, CPG) from natural reservoirs. In this study, we carried out reservoir simulations using TOUGH2 to evaluate the sensitivity of recovery, pressure buildup, power generation performance combined CO2-EGR–CPG system key operational parameters. The paramet...