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Showing 1 to 20 of 57 for “"Injection pressure"”.
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The effect of fuel injection pressure and in cylinder temperature on igniton delay, combustion performance and emission
… effects of ambient temperature,Ti and injection pressure, Pinj on the heat release process during ignition delay periods. Rapid compression machine (RCM) was used to simulate actual phenomenon inside the combustion chamber. This study used of 5vol%, 10vol%, and 15vol% blending of palm …
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Assessing the hydrocarbon emissions in a homogeneous direct injection spark ignited engine
… hydrocarbon (HC) emissions in a direct-injection spark ignited (DISI) engine, five experiments were performed. These experiments clarified the role of coolant temperature, injection pressure, and injection timing in HC emissions; the final two experiments illustrated the effect of …
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Effects of split injection and exhaust gas recirculation strategies on combustion and emissions characteristics in a modern V6 diesel engine
… engine emissions through the combined effects of injection strategy (fuel injection pressure, dwell period, pilot fuel quantity) and cooled Exhaust Gas Recirculation (EGR) on a modern V6 common rail direct injection diesel engine. In the case of using EGR (49–52%) at 1500 rpm and 10% of engine …
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Autoignition and emission characteristics of gaseous fuel direct-injection compression-ignition combustion
… high unburned fuel emissions. Natural gas direct-injection engines offer the potential of diesel-like efficiencies, but require further research. To improve understanding of the autoignition and emission characteristics of natural gas direct-injection compression-ignition combustion, the effects …
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Fiber compaction and wetout in tapered resin injection pultrusion manufacturing
… through a resin, possibly folloby a separate injection chamber preforming system, and into a heated die, where the resin undergoes complete wetout. Thus the required pultruded composite is obtained in the desired profile. The main objective of this research is to present a numerical model …
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Estudo paramétrico do processo de extração com solvente (VAPEX) como método de recuperação de óleo pesado
… such as the spacing between wells, the injection pressure, and type of solvent, viscosity oil, residual water saturation and horizontal permeability are addressed in this study. The choice of solvent to be used in the process was the factor that most significantly influenced the process, …
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ASPECTS OF RECYCLING OF CARBON FIBRE REINFORCED POLYETHERETHERKETONE (CF/PEEK)
… was found to be favourable especially using injection moulding method to reprocess the recycled material. In the comminution method, fibre damage from the granulation process was observed. Amount of damage inflicted at the fibre's ends seems to be independent of the fibre length. Using the …
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Transient multiphase flow simulation for unloading of frac hit gas wells
… for unloading horizontal gas wells with gas injection in the annulus. The work investigates unloading non-Newtonian fluids such as those which invade offset wells when a frac hit occurs during hydraulic fracturing operations in unconventional wells. The effect of varying tubing depth and …
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Descaling petroleum production tubing using multiple high-pressure nozzles
The mechanical approach of utilizing high-pressure water for scale removal has gained wider acceptance by multinational despite facing poor downhole performance challenges (cavitation) that need abrasion compensation (sand). Although sand particles have side effect of jeopardize the integrity of …
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Investigation of mould design and process parameter optimisation of plastic injection moulding for thin wall part
In plastic injection moulding industries such as automotive, packaging and medical, demands for thin wall parts increases for the reason of light weight, lower cycle time, lower part cost and higher productivity. However, a lot of challenges faced by the moulders since the mould and processing …
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EVALUATION OF NOVEL PREFORMED PARTICLE GELS FOR CONFORMANCE CONTROL AND ACID STIMULATION THROUGH CORE FLOODING TESTS
… swelling ratio, and fracture width effect on the injection pressure, water breakthrough pressure, and residual resistance factor (Frr). Results show that fiber can increase RPPG strength with an optimized fiber concentration. With increasing swelling ratio, the stable gel injection pressure …
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Understanding the development of a reacting fuel jet inside an automotive-size diesel engine using optical and laser-based diagnostics
… and cylinder liner. Using the common-rail fuel injection system of the engine, the fuel injection was executed for long duration, creating negative ignition dwell conditions in which the start of combustion occurs before the end of injection. A single-hole nozzle was used to isolate the jet-wall …
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Evaluation of hydroxyapatite (HA) from waste eggshell strengthened with ultra high molecular weight polyethylene (UHMWPE) by using injection molding process
… In order to support the process ability of injection molding, the flow ability of the feedstock during injection molding process should be in pseudoplastic form where the viscosity decreased when the shear rate increased [64]. The Taguchi’s Method has been used as the Design of Experiment …
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Optimization processability of ss316l used natural hydroxyapatite from waste tilapia fish bones in metal injection molding
… a Natural Hydroxyapatite (NHAP) powder in metal injection moulding. Feedstock were prepared based on water atomized Stainless steel 316L (SS316L) and combination of NHAP powder bind with Low density Polyethylene (LDPE) and Palm stearin (PS). The results of rheological analysis show feedstocks …
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The reduction of supersonic jet noise using pulsed microjet injection
… of supersonic jet noise using pulsed microjet injection at the nozzle exit. Experimental investigations were carried out using this control method on an ideally expanded Mach 1.8 jet operating at 900, 1300 and 1700'F. Six Bosch fuel injectors were modified and mounted on a toroidal manifold …
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A Lorentz-force actuated controllable needle-free drug delivery system
The advantages of delivering injections via needle-free methods are numerous. However, conventional methods for needle-free injection lack sufficient control over depth of penetration and shape of injection. Thus, a needle-free injector was designed, constructed, and tested, using a controllable …
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Effect of Temperature on Performance of Vapex Process for Heavy Oil
Incorporating some heat injection along with the solvent injection appears to be the most viable option for improving the oil drainage rate of Vapex (Vapor Extraction) in extra-heavy oil formations. This study was aimed at quantifying the upper limit of oil rates achievable with heated solvent …
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Development of an aluminium filled epoxy insert using perfactory rapid prototyping technique and electroless nickel plating for low volume plastic injection moulding
… a rapid tool for low volume production plastic injection moulding is designed, developed, and tested on an injection moulding machine. The tool is designed as a cavity insert of injection mould for plastic parts by an indirect rapid tooling approach. The plastic part is modelled in a CAD system …
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Gate design for injection molds
… be in DOC feed-forward control applications for injection molding cycles. Several improvements can be made on this model. First, a more detailed analysis should yield a better relationship between the volumetric flow rate and the pressure at a given point. This is necessary because the volumetric …
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Processing parameters and chamber length impact on detached die and attached die resin injection pultrusion
<p>Injection pultrusion is an efficient and highly automated continuous process for high-quality, low-cost, high-volume manufacturing of composites. The main objective of this study is to analyze "attached die configuration" and "detached die configuration" for the better injection pultrusion …
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