Idle speed control of ultra-lean burn engines continues to be a major focus of automotive engineers owing to the benefits offered in terms of fuel economy and emissions reduction. This paper applies a recently proposed linear time varying model predictive approach for the idle speed control of ultra-lean burn internal combustion engines. Unlike conventional gasoline engines, the approach uses f...

This paper discusses the issues of measuring formaldehyde on rich burn natural gas engines typically used in the gas compression industry in the United States. Recently, the EPA passed the final rule for reciprocating internal combustion engines to meet the national emission standards for hazardous air pollutants (i.e. RICE NESHAP rule) for both compression ignition (CI) and spark ignited (SI) ...

Introduction Current and upcoming environmental policy in the developed countries is imposing significant decreases in NOX emissions from combustion processes such as vehicle engines. Traditional three-way catalysts are ineffective under O2 rich atmosphere lean-burn engines operate under. Lean NOx trap (LNT) technology developed for treating lean automotive exhaust emission is considered one of...

Considering the disadvantages of gasoline and natural gas as mono-fuel in SI engines has made the researchers to improve the performance and reduce the pollutant as the advantages of the application of dual fuel engines. On the other hand, lean-burn in engine may lead to the reduced pollutant. In the present study various mixtures of gasoline and natural gas with the gasoline as the dominant fu...

We have studied the ignition of fuel sprays and simulated solid rocket fuels (SRF) by the photoignition of single wall carbon nanotubes (SWCNTs) with an ordinary camera flash. Our investigation includes the effect of solid additives such as aluminum nano-particles and solid oxidizers such as ammonium perchlorate (AP) on the photoignition characteristics. We have shown that by mixing CNT with ot...

we report the development of different types of oxygen sensors based on yittria-stabilized zirconia (ysz) as a solid electrolyte. the conventional oxygen sensor is a concentration cell with two porous pt electrodes, one of which is exposed to air as a constant (reference) oxygen concentration and the other is exposed to automobile exhaust gas of variable oxygen concentration, depending on the a...

Cu/Ba/bauxite possesses superior NOx storage and reduction (NSR) performances, high thermal stability, strong resistance against SO₂ poisoning and outstanding regeneration ability in comparison with Pt/Ba/Al₂O₃. It can serve as a cheap and promising alternative for traditional Pt/Ba/Al₂O₃ in NOx removal from lean-burn engines.

We report the development of different types of oxygen sensors based on yittria-stabilized zirconia (YSZ) as a solid electrolyte. The conventional oxygen sensor is a concentration cell with two porous Pt electrodes, one of which is exposed to air as a constant (reference) oxygen concentration and the other is exposed to automobile exhaust gas of variable oxygen concentration, depending on the a...

BACKGROUND In Iran, burns are the second most common cause of death, after traffic accidents in individuals under the age of 15 years. Many burned patients die or suffer injury due to lack of immediate care, so we need to use an alternative resuscitations to cure them immediately. Telemedicine describes the use of medical information exchanged from one site to another via electronic communicati...