Topic
Four-stroke engine
About: Four-stroke engine is a research topic. Over the lifetime, 6392 publications have been published within this topic receiving 54920 citations. The topic is also known as: four-stroke cycle & four-stroke cycle engine.
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01 Jan 2009
TL;DR: In this article, the performance and emission characteristics of a compression ignition engine while using cerium oxide nanoparticles as additive in neat diesel and diesel-biodiesel-ethanol blends are analyzed.
Abstract: An experimental investigation is carried out to establish the performance and emission characteristics of a compression ignition engine while using cerium oxide nanoparticles as additive in neat diesel and diesel-biodiesel-ethanol blends. In the first phase of the experiments, stability of neat diesel and diesel-biodiesel-ethanol fuel blends with the addition of cerium oxide nanoparticles are analyzed. After series of experiments, it is found that the blends subjected to high speed blending followed by ultrasonic bath stabilization improves the stability. The phase separation between diesel and ethanol is prevented using vegetable methyl ester (Biodiesel) prepared from the castor oil through transesterification process. In the second phase, performance characteristics are studied using the stable fuel blends in a single cylinder four stroke computerised variable compression ratio engine coupled with an eddy current dynamometer and a data acquisition system. The cerium oxide acts as an oxygen donating catalyst and provides oxygen for the oxidation of CO or absorbs oxygen for the reduction of NOx. The activation energy of cerium oxide acts to burn off carbon deposits within the engine cylinder at the wall temperature and prevents the deposition of non-polar compounds on the cylinder wall results reduction in HC emissions. The tests revealed that cerium oxide nanoparticles can be used as additive in diesel and diesel-biodieselethanol blend to improve complete combustion of the fuel and reduce the exhaust emissions significantly.
236 citations
TL;DR: In this article, an artificial neural network (ANN) was used to predict the engine brake power, output torque and exhaust emissions (CO, CO2, NOx and HC) of a four-cylinder, four-stroke test engine.
232 citations
TL;DR: In this paper, the effect of antioxidant additives on NOx emissions in a jatropha methyl ester fuelled direct injection diesel engine have been investigated experimentally and compared with conventional diesel fuel.
223 citations
TL;DR: In this paper, the effects of fuel preheating to 100°C on the engine performance and emission characteristics of a CI engine fueled with rapeseed oil diesel blends were clarified.
213 citations
Book•
15 Aug 1999TL;DR: In this paper, the authors provide design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission.
Abstract: This book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission.
200 citations