27 results for “injection pressure”

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Research ArticleOpen accessIn the abstractThe Effects of Excess Oxygen to Mixture on the Gasses Emissions of a Gasoline EngineWaleed MomaniProblem statement: The effects of excess feeding oxygen to the fuel-air mixture on the exhausts gasses emissions concentrations are investigated here. It is known that spark-ignition and diesel engines are considered as major sources of urban air pollution; such pollutants are CO2, CO, HC. Hence, many techniques have been used to decrease such emissions such as: Catalytic converters, oxidizers, traps … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 7,513 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDiesel Engine Convert to Port Injection CNG Engine Using Gaseous Injector Nozzle Multi Holes Geometries Improvement: A ReviewSemin, Abdul Rahim Ismail, Rosli Abu BakarThe objective of this study was to review the previous research in the development of gaseous fuel injector for port injection CNG engine converted from diesel engine. Problem statement: The regular development of internal combustion engines change direction to answer the two most important problems determining the development trends of engines technology and in particular, their combustion systems. They were … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Apr 2009 · 8,631 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDevelopment of an Air Assisted Fuel Atomizer (Liquid Siphon Type) for a Continuous CombustorPipatpong Watanawanyoo, Sumpun Chaitep, Hiroyuki HiraharaThis research was the study of a fuel injection system in continuous combustor. Air atomizing nozzle is developed to good efficiency injection and used low air pressure (68.95-275.79kPa) to assist the atomizing nozzle. Refined palm oil and automotive diesel oil were the fuels for the experiment for the system of atomization. The atomizer was designed in a manner that air … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,544 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAn Investigation of Valve Lift Effect on Air Flow and Coefficient of Discharge of Four Stroke Engines Based on ExperimentAbdul Rahim Ismail, Rosli Abu Bakar, SeminThe coefficient of discharge (CD) is defined as the ratio of actual discharge to ideal discharge. In an engine environment, ideal discharge considers an ideal gas and the process to be free from friction, surface tension, etc. Coefficients of discharge are widely used to monitor the flow efficiency through various engine components and are quite useful in improving the performance … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 7,431 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAcute Hypotensive and Diuretic Activities of Chamaemelum nobile Aqueous Extract in Normal RatsN. A. Zeggwagh, J. B. Michel, M. EddouksThis study aims to evaluate the effect of Chamaemelum nobile (Cn) intravenous injection on cardiovascular and renal function of normal rats. Intravenous bolus injection of Cn at the dose of 50, 100 and 200 mg kg-1, produced dose dependent reduction in arterial blood pressure (p<0.001). Significant reduction in heart frequency was observed after Cn injection at a dose of 100 … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 3 · 30 Sep 2007 · 7,115 accessesView PDF Cite

Research ArticleOpen accessIn the abstractIncreased Production of Nitric Oxide Contributes to Renal Oxidative Stress in Endotoxemic RatBahar Tunçtan, Belma Korkmaz, Hatice Yıldırım et al.Overproduction of reactive oxygen and nitrogen species leads to oxidative stress and decreased total antioxidant capacity, which is responsible for high mortality from several diseases such as endotoxic shock. Nitric oxide (NO) produced by inducible NO synthase (iNOS) during endotoxemia is the major cause of vascular hyporeactivity, hypotension and multiple organ failure. In this study, we investigated whether increased production … …American Journal of Infectious Diseases, Vol. 1, Issue 2 · 30 Jun 2005 · 8,638 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordEnvironmental Pollution Assessment of Different Diesel Injector Location Of Direct-Injection Diesel Engines: Theoretical StudyEyad S. M. Abu-Nameh, Jehad A. A. YaminAn Analytical investigation on the effect of injector location of a four-stroke DI diesel engine on its pollutants’ emissions was carried out under different injector locations ranging from central to peripheral at different engine speeds ranging from 1000 rpm to 3000 rpm. The simulation results clearly indicated the advantages and disadvantages of the central location over the peripheral one. It … …American Journal of Environmental Sciences, Vol. 4, Issue 2 · 30 Apr 2008 · 6,467 accessesView PDF Cite