نتایج جستجو برای: injection angle

تعداد نتایج: 286118  

In this computational research, the separate and simultaneous impacts of diesel direct injection timing, fuel spraying cone angle, and hydrogen gas addition on combustion characteristics, output emissions, and performance in a single-cylinder direct injection diesel engine was studied. In order to conduct the simulations, valid and reliable models for combustion, break-up, and for turbulence wa...

ژورنال: تحقیقات موتور 2018
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with developing of optical technologies, using of different imaging methods to study various properties of gasoline direct injection spray is under development. Scope of this article is  to study the effect of overall spray angle and spray projected area for determination of spray propagation and investigate the effectiveness of this criterion.  The injector was a multi-hole direct injection in...

Increase of environmental pollution and restricted emission legislations have forced companies to produce automobiles with lower air pollutants. In this respect, discharge of blowby gases into the environment has been prohibited and their recirculation into the combustion chamber is proposed as an alternative solution. In addition, using EGR technique to control and reduce nitrogen oxides in in...

Journal: :medical hypothesis, discovery and innovation ophthalmology journal 0
kimia ziahosseini ian bruce marsh

to evaluate the effectiveness of a single injection of bupivacaine (bpx) application for correction of eso/exodeviations this study has been performed. a retrospective review of 30 patients with eso/exodeviations less than 20 prism diopters (pd). preoperative deviations were recorded in pd, using the alternate prism cover test. postoperative angles at 1 and 3 months were measured in the same ma...

The purpose of this paper is to analyze the flow field structure in transient state and performance of secondary injection system for thrust vectoring in divergent section of a two-dimensional nozzle. Secondary injection for thrust vectoring in a two-dimensional nozzle is studied by solving three-dimensional Reynolds-averaged equations by means of fluent solver. Spalart-allmaras model was used ...

2010
Bharat Raj Singh Onkar Singh

Globally faster consumption of hydrocarbon fuel in the transport sector is posing threat to environmental and ecological imbalances and thereby depletion of hydro-carbon fuel is causing another challenge to oil reserves. In view of these issues extensive researches are being carried out to explore the alternative energy source and or to find out appropriate energy conversion system. The atmosph...

2007
Ronald H. Miller Dan Winske Tamas I. Gombosi

Low frequency magnetic fluctuations generated by solar wind/cometary ion distributions cause pitch-angle scattering of cometary ions. The nature of this pitch angle scattering is examined by means of one-dimensional hybrid simulations, in which newborn ions are created at a constant rate, and for various injection angles, o•, relative to the magnetic field. Pitch angie scattering in the quasipe...

2012
Nilza Minguini Keila M. M. de Carvalho Fábio L. S. Bosso Fábio Endo Hirata Newton Kara-José

Some patients with large-angle strabismus may refuse or may not meet the criteria for binocular surgical correction. A second option for these patients involves a monocular procedure, which can be performed under peribulbar anesthesia and offers certain advantages (1). Improved surgical outcomes for conventional procedures may enhance the effectiveness of monocular surgery. In theory, this enha...

ژورنال: مواد پرانرژی 2014

In this paper, the effect of secondary fluid injection on deviation and control of thrust vector with use of sprayed liquid fluid multi injection in to divergence nozzle flow is studied. Freon fluid as injection fluid have been chosen that more applicable and the fluent software is used for simulation flow field. In this investigation after grid study, different simulations in order to obtain t...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2012
m. v. s. murali krishna v. v. r. seshagiri rao p. v. k. murthy t. k. k. reddy

experiments were conducted to evaluate the performance of a low heat rejection (lhr) diesel engine. performance parameters and emission levels were determined at various magnitudes of brake mean effective pressure. combustion characteristics of the engine were measured with tdc (top dead centre) encoder, pressure transducer, console and special pressure-crank angle software package at peak load...

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