UTEP has developed a dedicated E85 vehicle with superior emissions and cold starting characteristics when compared to the original gasoline vehicle, and with no apparent differences in performance and driveability. All fuel system components that were not E85 compatible have been replaced or modified. Cold start characteristics are improved by incorporating a high frequency multiple spark ignit...

In June 2012, an IARC Monographs Working Group reevaluated the carcinogenic hazards to humans of diesel and gasoline engine exhausts, and of some nitroarenes that are found in these emissions. Diesel engine exhaust was classified as “carcinogenic to humans” (Group 1) and gasoline engine exhaust as “possibly carcinogenic to humans” (Group 2B). The most influential epidemiological studies on canc...

This paper describes a method for constructing a model of normal system state for the purpose of providing continuous condition monitoring of an aerospace gas-turbine engine. We show how the model can be visualised in 2D to allow an intuitive identification of abnormal engine and how periods of abnormal engine condition can be identified by means of a novelty score. This approach is illustrated...

In-cylinder exhaust gas recirculation (EGR) stratification, generally achieved by supplying EGR asymmetrically into intake ports on a four-valve diesel engine, is sensitive to trapped exhaust gas in the intake manifold and intake ports that is caused by the continuous supply of EGR during the valve-close periods of the intake valves. The subject of this study is to evaluate the distribution of ...

This is a joint thermodynamicand acoustic study of engines for next-generation supersonic aircraft. It explores Ž xed-cycle concepts with potential for quiet takeoff and efŽ cient cruise. The  owpath is simple, withoutmechanical suppressors.The strategy is to takearepresentative state-of-the-artmilitary turbofanengineandincrease its bypass ratio to a moderate value. The engine core stays the s...

Fleet fuel consumption is greatly reduced through the introduction of the HSDI Diesel engine. The reduced fuel consumption is then reflected in a reduction of CO2 emissions. The drop in fuel consumption and CO2 emissions results in a rise in market acceptance, which is also the result of desirable driving performance and greatly improved NVH behavior. The continuously increasing demands on plac...

Incomplete burning of the fuel and high emission in the engine were the major problems in using the petrol as a fuel. In this Experimental study, the effects of Diethyl Ether, petrol fuel blend investigated on four stroke four cylinder SI engine for analyzing the performance and combustion characteristics. The tests were performed while running the engine at speeds of 1500&1000 rpm and at four ...