搜索结果: 1-13 共查到“动力机械工程 performance”相关记录13条 . 查询时间(0.25 秒)
Effect of Exhaust Gas Recirculation (EGR) on the Performance and Emission Characteristics of Diesel Engine with Sunflower Oil Methyl Ester
Emission Exhaustgas Recirculation Sunflower Oil
2010/1/15
Transesterified fuels (biodiesel) from vegetable oils are alternative fuels for diesel engines. They are renewable and offer potential reduction in CO and HC emissions due to higher O2 contents in veg...
INFLUENCE OF DISTILLATION ON PERFORMANCE, EMISSION, AND COMBUSTION OF A DI DIESEL ENGINE, USING TYRE PYROLYSIS OIL DIESEL BLENDS
diesel fuel tyre pyrolysis oil hydrocarbon
2009/10/14
Conversion of waste to energy is one of the recent trends in minimising not only the waste disposal but also could be used as an alternate fuel for internal combustion engines. Fuels like wood pyrolys...
COMPARISON OF PERFORMANCE OF BIODIESELS OF MAHUA OIL AND GINGILI OIL IN DUAL FUEL ENGINE
alternative fuel mahua oil methyl ester gingili oil methyl ester
2009/10/14
In this work, an experimental work was carried out to compare the performance of biodiesels made from non edible mahua oil and edible gingili oil in dual fuel engine. A single cylinder diesel engine w...
3-D CFD ANALYSIS ON EFFECT OF HUB-TO-TIP RATIO ON PERFORMANCE OF IMPULSE TURBINE FOR WAVE ENERGY CONVERSION
wave energy impulse turbine computational fluid dynamics
2009/10/14
This paper deals with the computational fluid dynamics analysis on effect of hub-to-tip ratio on performance of 0.6 m impulse turbine for wave energy conversion. Experiments have been conducted on the...
Experimental Performance Analysis of Biodiesel,Traditional Diesel and Biodiesel with Glycerine
Alternative fuel Diesel engine Performance Biodiesel Glycerine
2009/10/10
Biodiesel, traditional Diesel and biodiesel with glycerine were used as the fuel of a direct injection compression ignition engine. The torque, brake power and fuel consumption values associated with ...
Performance and Emission Characteristics of LPG-Fuelled Variable Compression Ratio SI Engine
Variable compression ratio engine LPG Performance Emissions Spark Ignition
2009/10/9
The growing concern about the fast depletion of petroleum-based fuels and the environmental pollution caused by their combustion has been a compelling incentive to many researchers to find ways to use...
Comparision of Diesel Engine Performance and Emissions from Neat and Transesterified Cotton Seed Oil
Bio-Diesel Transesterification Cottonseed Oil Methyl Ester
2010/1/15
There is an increasing interest in India to search for suitable alternative fuels that are environmental friendly. Environmental concerns and limited amount of petroleum resources have caused interest...
通过加装液化石油气（LPG）供给系统和设计LPG电控多点喷射系统，对295T型直喷柴油发动机进行了改装，并在相同条件下，以改装后的发动机为试验装置，分别燃用柴油和LPG/柴油双燃料进行了台架性能试验。试验结果表明：LPG/柴油双燃料发动机的动力性能比原机动力性能有较大幅度提高，经济性能明显改善。LPG/柴油双燃料发动机的排放性能与原机相比：Nox排放量有一定减少；CO排放量和原机接近；HC排放量在...
Performance, Emission and Combustion of LPG Diesel Dual Fuel Engine using Glow Plug
Liquefied Petroleum Gas Glow Plug Performance
2010/1/15
A single cylinder vertical air-cooled diesel engine was modified to use LPG in dual fuel mode to study the performance, emission, and combustion characteristics. The primary fuel, liquefied petroleum ...
配流阀容积效率对三缸内燃水泵工作性能的影响（Effect of Distributing Valve’s Volumetric Efficiency on Working Performance of Three Cylinders Internal Combustion Water Pump）
内燃泵 配流阀 容积效率
2009/5/22
综合考虑液体可压缩性与液体连续流条件的影响，建立了三缸内燃泵(ICP)配流阀的动力学模型，研究了配流阀的容积效率特性。样机工作频率与配流阀的固有频率成整数倍关系时，容积效率大幅度降低。样机标定转速与容积效率最低时的转速较为接近，不利于系统正常稳定工作。容积效率的变化对ICP的燃油消耗率、输出流量、有效热效率、有效功率等性能指标影响较大，但对输出压力基本没有影响。
燃烧室结构对稀燃天然气发动机性能的影响（Influence of the Combustion Chamber Structure on the Lean Burn CNG Engine Performance）
天然气发动机 燃烧室 稀薄燃烧
2009/5/22
阐述了稀燃天然气发动机缸内不同气体运动及其产生机理，分析了缸内气体运动对发动机燃烧过程的影响。针对稀燃天然气发动机的燃烧过程,设计了不同结构形状和尺寸的燃烧室,并分别通过数值模拟和试验方法，就不同结构的燃烧室对天然气发动机性能的影响进行了研究。结果显示，产生湍流强度大的燃烧室燃烧速度快，动力性和经济性较好，而NOx排放量也较大。
液力缓速器叶片变角度的缓速性能分析 Performance Analysis for Hydrodynamic Retarder with Different Vanes
液力缓速器 前倾角 湍流模型
2009/5/18
采用雷诺时均N-S方程、标准k-ε模型和SIMPLEC算法对液力缓速器内部流场进行了数值模拟，分析倾角为50°、55°、60°时液体流动的速度分布、压力分布和湍动能分布规律。以Rothalpy值的变化作为损失分析指标，定量比较不同倾角对制动力矩的影响，得出叶片倾角为55°时缓速能力最大，其原因是沿程摩擦阻力损失与冲击损失的叠加使得液力损失最大。
Improving the Performance of Two Stroke Spark Ignition Engine by Direct Electronic CNG Injection
Two-stroke spark ignition engine direct injection CNG
2010/1/15
Two stroke spark ignition engines have high exhaust emissions and low brake thermal efficiency due to the short circuiting losses and incomplete combustion, which occur during idling and at part load ...