Performance of Diesel Engine Fuelled With Four Vegetable Oils, Preheated and at Engine Working Temperature

Abstract

ABSTRACT:With the rise of restrictions imposed by law for gases emission, several technologies both for petrodiesel (PD) or diesel engines are been applied, such as the sulfur reduction and the injection electronic command, followed of gases recirculation and/or after-treatment. The utilization of biofuels is considered as an interesting option for pollutants reduction. In this study was evaluated the performance on short duration tests (minor period than the factory indication of the lubricant lifespan) of the Diesel engine fueled with four vegetable oils. With the aim to select the most interesting oils for future evaluations in long duration tests. The analyzed variables were fuel consumption, power relative loss and opacity, for oils of linseed, crambe, rapseed, jatropha , with 100 °C preheating and engine work temperature (60 °C) comparing those with the PD. It was verified that the vegetable oils, on average, present a lower consumption than the PD for the cases of working without load, however with load, they presented higher consumption. In addiction were observed that the oils show a higher relative power loss in relation of PD and provides lower emission of particulate matter. Crambe and canola presented the best performance among the evaluated oils.

Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels

“…Similar trend and range of exhaust gas temperatures were reported by Delalibera et al 6 The amount of fuel injected increases with the engine load in order to provide the power output and hence the heat release with increase in load applied. 6,36,38 At all loads, diesel and SVOs are found to have alternate lowest temperature. The SVO fuels contain oxygen which enables the combustion process and hence the exhaust gas temperatures are higher.…”

“…[1][2][3] The use of plant oils in diesel engines will support the utilization of indigenous renewable energy resources in not only achieving sustainable economic development but also promoting ''clean and green energy'' for preserving the natural environment. [4][5][6][7] Vanuatu suffers from the disadvantages of small population, distance from the world market, scattered nature of archipelagos and frequent natural disasters. At the same time, coconut (cocos nucifera), tamanu (calaphyllum inophyllum), and nangae (canarium indicum) are good natural resources in Vanuatu.…”

“…7,16 The process of combustion of alternative forms of fuel in a diesel engine can prove quite demanding in terms of engine response, system reliability and exhaust emissions compared to neat diesel fuel. 6,16,17 Fuel is injected by the fuel-injection system into the cylinder towards the end of the compression stroke. The liquid fuel is usually injected at high velocity in the form of one or more jets through small orifices or nozzles in the injector tip to atomize into small drops and penetrate into the combustion chamber.…”

Impact of Diethyl Ether/Rapeseed Oil Blends on Performance and Emissions of a Light-Duty Diesel Vehicle

“…Therefore, fuel modification in the way of blending, emulsification or oxygenation is the simplest solution for emission reduction, neither engine modification for alternative fuel use. Furthermore, preheating of oil is not the best solution due to increase of fuel consumption for preheated oils than those without preheating, while no effect of this heating process was noticed on diesel engine opacity [5].…”

Fuel consumption in an air blower for agricultural use under different operating conditions

“…In Diesel cycle engines, recent studies have equally demonstrated the importance of the parameters of consumption, performance and emissions for diesel/alcohol blends (ethanol, methanol and butanol) and little is known (Kumar et al, 2013;Putrasaria et al, 2013;Gonca, 2014;Abedim et al, 2016;Fayyazbakhsh & Pirouzfar;Kumar & Saravanan, 2016); and also fuel preheating when considering vegetable oils (Delalibera et al, 2017).…”