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Biodiesel can be used as alternative to replace fossil diesel. However, usage of biodiesel in an unmodified diesel engine can cause higher in nitrogen oxides (NOx) emission. In order to reduce the harmful emission, certain injection strategies can be carried out. In this paper, the effects of biodiesel blends, fuel injection timing and split injection schemes on the engine performance, emissions and...
Bioethanol can potentially replace gasoline because of its lower exhaust emissions. The purpose of this study was to investigate the engine performance and exhaust emissions of Manihot glaziovii bioethanol–gasoline blends at different blend ratios (5%, 10%, 15%, and 20%). Tests were performed on a single-cylinder, four-stroke spark-ignition engine with engine speed was varied from 1600 to 3400rpm,...
Nowadays, the development of biodegradable products is important in improving energy efficiency and green environment, particularly in energy conservation and rotation of machinery systems. In the case of sliding components, lubrication system and lubricant quality plays an important role for energy efficiency as it is directly involved with frictional force and components wear characteristics. The...
Biodiesel is an alternative diesel fuel that is produced from renewable resources. Energy studies conducted over the last two decades focused on solutions to problems of rising fossil fuel price, increasing dependency on foreign energy sources, and environmental concerns. Palm oil biodiesel is mostly used in Malaysia. Engine performance and emission tests were conducted with a single-cylinder diesel...
Use of pure alcohols or alcohols blended with petroleum-based fossil fuel or biodiesel blends as engine fuel is an attractive alternative solution for internal combustion engines. This study conducted an experiments in a single cylinder, four-stroke, water-cooled, direct-injection diesel engine. Engine performance and emission characteristics of diesel–Alexandrian laurel biodiesel blends with 15 and...
The non-edible oil from Schleichera oleosa possesses the potential as a feedstock for biodiesel production. In this study, the biodiesel production was performed using two-step transesterification process on a laboratory scale. The parameters studied were reaction temperature, molar ratio of methanol to oil, catalyst concentration, reaction time and catalysts type. An analysis of variance (ANOVA)...
The diminishing supply of fossil fuels reserves and the environmental concerns have made renewable energy an alternative energy source for the future. Sterculia foetida is one of the possible non-edible feedstocks for biodiesel production. This paper explores and examines the potential biodiesel production from S. foetida. Besides, this study also aimed to optimize the biodiesel production parameters...
This paper investigates the opportunity of biodiesel characterization and production from Ceiba pentandra seed oil. The biodiesel production was conducted by two step acid–base transesterification. The process was carried out using acid catalyst (H 2 SO 4 ) and alkaline catalyst (NaOH). It has been found that the properties of C. pentandra methyl ester fell within the recommended biodiesel...
Increased biodiesel production is being proposed as one solution to the need to ease the impact of increased demand for crude oil and to reduce emissions of greenhouse gases. Despite this, biodiesel has yet to reach its full commercial potential, especially in the developing countries. Besides technical barriers, there are several nontechnical limiting factors which impede the development of biodiesel...
Use of biodiesel in automobile can significantly reduce our dependence of fossil fuel and help reduce environmental pollution. However, there are concerns over the compatibility of currently used automotive materials in biodiesel. A few automobile manufacturers extended their warranty only to lower blends of biodiesel (e.g. B5). Higher blends (e.g. B50 or B100) are still not covered by warranty. In...
This paper presents test results obtained from running a 1.5L, 4-cylinder Proton Magma retrofitted spark ignition car engine with dynamometer. Performance, fuel consumption and exhaust emissions measurements were recorded under steady state operating conditions for gasoline and compressed natural gas (CNG). The engine was converted to computer integrated bi-fueling system from a gasoline engine and...
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