Ammonia Emissions in SI Engines Fueled with LPG

Effects of LPG on the performance and emission characteristics of SI engine - An Overview

IC engines are considered as major contributors to the deterioration of the environment, therefore there is an increasing demand to go for alternative fuels for both SI and CI engine so as to maintain the ecological balance as well as reduce dependency on petroleum and socio economic aspects. The gaseous fuel such as LPG has been widely used throughout the world in SI engines as it impacts gree...

Controlling Cyclic Combustion Variations in Lean-Fueled Spark-Ignition Engines

Under conditions of lean fueling or high exhaust gas recirculation, interactions between residual cylinder gas and freshly injected fuel and air produce undesirable combustion instabilities in spark-ignition engines. The resulting dynamics can be described as noisy bifurcations of a nonlinear map and are complicated by cylinder-to-cylinder coupling. We discuss the key dynamic features relevant ...

Nanoparticle Emissions from Engines

Recently concerns about possible increases in emissions of ultrafine and nanoparticles and their environmental impact have been voiced. A major problem with assessing the significance of such emissions is that, unlike the carbonaceous soot particles associated with older Diesel engines, many of these particles are not formed in the engine but instead by gas-to-particle conversion processes from...

Effect of Intake Primary Runner Blockages on Combustion Characteristics and Emissions with Stoichiometric and EGR-Diluted Mixtures in SI Engines

Ammonia emissions from dairy production in Wisconsin.

Ammonia gas is the only significant basic gas that neutralizes atmospheric acid gases produced from combustion of fossil fuels. This reaction produces an aerosol that is a component of atmospheric haze, is implicated in nitrogen (N) deposition, and may be a potential human health hazard. Because of the potential impact of NH3 emissions, environmentally and economically, the objective of this st...