Experimental investigation on performance, combustion and emission analysis of a direct injection diesel engine fuelled with rapeseed oil biodiesel

Effect of biodiesel fuels on diesel engine emissions

Comparison of performance and emissions characteristics of DI CI engine fueled with dual biodiesel blends of palm and jatropha

A review on prospective production of biofuel from microalgae

An experimental evaluation of engine performance and emisssion characteristics of CI engine operated with Roselle and Karanja biodiesel

Experimental studies on engine performance and emission characteristics using castor biodiesel as fuel in CI engine

A study on performance, emission and combustion characteristics of diesel engine powered by nano-emulsion of waste orange peel oil biodiesel

Problem statement: The increasing awareness of the environmental haza rds and the alarming levels of air pollution have led to more r estrictive regulations on engines emission control in recent years. Approach: The dwindling resources and rising cost of crude o il had resulted in an intensified search for alternate fuels. In the pres ent study biodiesel (palm oil methyl ester) blends with diesel was investigated in a direct injection stati onary diesel engine. The stationary engine test bed used consists of a single-cylinder four stroke dies el engine, eddy current dynamometer with computer control data acquisition system and exhaust emissio ns analyzer. Results: Engine tests were conducted at constant speed using neat diesel fuel and variou s proportions of biodiesel blends. The exhaust emissions such as CO, HC and NOx were measured using exhaust gas analyzer. Performance characteristics like brake thermal efficiency and s pecific fuel consumption were recorded. The differences in the measured emissions and performance of the biodiesel-diesel fuel blends from the baseline operation of the engine, i.e., when workin g with neat diesel fuel were determined and compared. Conclusion: It is concluded that the lower blends of biodiesel increased the brake thermal efficiency and reduced the fuel consumption. Biodie sel blends produces lower engine emissions than diesel. From the result, it has been established th at 20-40% of palm oil biodiesel can be use as a substitute for diesel without any engine modificati ons.

/pdf/use-of-palm-oil-biodiesel-blends-as-a-fuel-for-compression-4k2zerdlne.pdf

Use of palm oil biodiesel blends as a fuel for compression ignition engine.

In the present investigation a volatile fraction of Pinus resin called Turpentine has been experimented in a direct injection diesel engine under HCCI combustion mode. The engine chosen to experiment is a single cylinder DI diesel engine and modified in such a way to ignite Turpentine in a diesel engine under HCCI mode. As the Turpentine has a higher self ignition temperature the ignition of Turpentine in regular diesel engines with auto-ignition is not possible. Hence, suitable modification is made in the engine to ignite Turpentine in a diesel engine like diesel fuel. The modified engine has ECM controlled fuel spray and an air preheater in the suction side of the engine. The combined effort of adiabatic compression and supply of preheated air ignites turpentine by auto-ignition and its timing of ignition is precisely controlled by changing intake air temperature. This investigation revealed that the engine operated with turpentine performed well with little loss of brake thermal efficiency. And, emitted comparatively lower emissions such as NOx and smoke and proved that the turpentine is a best suited fuel for HCCI operation.

Feasibility and performance study of turpentine fueled DI diesel engine operated under HCCI combustion mode

In this paper, effect of geometric parameters of a centrifugal fan with backward- and forward-curved blades has been investigated. Centrifugal fans are used for enhancing the heat dissipation from the IC engine surfaces. In the process, the fan consumes power generated from the engine. As a first step, an experimental setup was developed and prototypes of fans were made to carry out measurements of flow and power consumed by the fan. The fan mounting setup was such that fan with uniform blades can be tested. Generally, fans have cut blades on the vehicle due to mounting accessories. We describe a patented design of shaft that would enable mounting of fan with uniform blades on the vehicle. Next, a computational fluid dynamics (CFD) model was developed for the above setup and the results are validated with the experimental measurement. Further, parametric studies were carried out to quantify the power coefficient, flow coefficient, efficiency and flow coefficients. The parameters considered in this study are number of blades, outlet angle and diameter ratio. The results suggest that fan with different blades would show same performance under high-pressure coefficient. However, the difference between the performances becomes distinct under low pressure coefficients suggesting that the fan performance testing should not be done on vehicle level where high pressure coefficients is observed due to various resistances in the system. The results show that increase in flow coefficient is accompanied by decrease in efficiency and increase in power coefficient. Effect on the vehicles mileage due to the use of forward and backward fan is also discussed. In summary, this study presents a systematic and reliable strategy to investigate the centrifugal fan performance in automotive applications.

https://www.ijaet.org/media/0001/5PARAMETRIC-STUDY-OF-CENTRIFUGAL-FAN-PERFORMANCE-EXPERIMENTS-AND-NUMERICAL-SIMULATION-Copyright-IJAET.pdf

M. Kannan

Papers

Experimental studies on engine performance and emission characteristics using castor biodiesel as fuel in CI engine

A study on performance, emission and combustion characteristics of diesel engine powered by nano-emulsion of waste orange peel oil biodiesel

Use of palm oil biodiesel blends as a fuel for compression ignition engine.

Feasibility and performance study of turpentine fueled DI diesel engine operated under HCCI combustion mode

Parametric study of centrifugal fan performance: experiments and numerical simulation