A Review of the Utilisation of Natural Gas with High Carbon Dioxide Content as Automotive Fuel in an Indirect Injection Diesel Engine

Rasheed Adewale Opatola,A Rashid A Aziz,Morgan Raymond Heikal,Mior Azman Meor Said

doi:10.1051/matecconf/20141302026

Rasheed Adewale Opatola, A Rashid A Aziz + Show 2 more

Open Access

https://doi.org/10.1051/matecconf/20141302026

Copy DOI

Abstract

The persistent consumption of fossil fuels by modern transportation tends toward feared depletion in crude oil and infliction of health risks on human beings and the environment due to the noxious emissions from the combustion of fossil fuels. This work examines the prospects of fuel modification in improving engine performance by utilising compressed natural gas (CNG) mixed with varying proportions of carbon dioxide (CO2) as fuel in Diesel engines. The extent to which the addition of CO2 to CNG could help simulate the effects of exhaust gas recirculation (EGR) as employed in modern engine technology will be established.

Highlights

Diesel engines are the most reliable and fuel-efficient internal combustion engines in the automotive industry; its high emissions drawbacks and the rising cost of fossil fuels have elicited concerns among automotive engineers
The past decades have witnessed upsurges in modern engine technology, which are aimed at utilising alternative fuels and abating emissions from Diesel engines, such as advanced fuel injection equipment, piezo-injection, injector nozzle modification, after-treatment devices and etc. [2]–[6]
Further advances in modern engine technology have led to the emergence of the low temperature combustion techniques, which are aimed at improved fuel consumption and reduced emissions through modification of combustion processes [7]

Summary

Introduction

Diesel engines are the most reliable and fuel-efficient internal combustion engines in the automotive industry; its high emissions drawbacks and the rising cost of fossil fuels have elicited concerns among automotive engineers. Further advances in modern engine technology have led to the emergence of the low temperature combustion techniques, which are aimed at improved fuel consumption and reduced emissions through modification of combustion processes [7]. In the work of Bedoya et al [32], the effects of mixing system and the pilot fuel quality on performance using biogas (60% CH4 + 40% CO2) as primary fuel in a stationary, dual-fuel Diesel engine were investigated Their findings revealed that full diesel substitution was attainable using biogas and biodiesel as power sources for all loads evaluated. Thermal efficiency and substitution of pilot fuel were increased, while CH4 and CO emissions were reduced by using supercharged mixing system combined with biodiesel as pilot fuel

Inferences from literature

Materials and methods

Findings

Conclusion