Affordable Access

Publisher Website

Water injection effects on the performance and emission characteristics of a CI engine operating with biodiesel

Authors
Journal
Renewable Energy
0960-1481
Publisher
Elsevier
Publication Date
Volume
37
Issue
1
Identifiers
DOI: 10.1016/j.renene.2011.06.035
Keywords
  • Bio-Diesel
  • Engine Performance
  • Emission
  • Water Injection
Disciplines
  • Ecology
  • Geography

Abstract

Abstract Biodiesel is one of the most promising renewable, alternative and environmentally friendly biofuels that can be used in diesel engine without any need for any modification in the engine. However, researchers have reported that the engines running with biodiesel emit NO x in higher concentrations. To address this problem, in the present study an experimental investigation has been carried out on the combustion, performance and emission characteristics of a compression ignition (CI) engine running with biodiesel under steady state conditions with a novel NO x reducing mechanism involving a water injections system. The experimental work has been conducted on a four-cylinder, four-stroke, direct injection (DI) as well as turbocharged diesel engine. In this investigation, biodiesel (produced from the rapeseed oil by transesterification process) has been used. During the experiments the in-cylinder pressure, specific fuel consumption, water injection flow rate, fuel flow rate and exhaust emission (NO x , CO, CO 2 and THC) were measured. The experimental results clearly indicate that water injection at a rate of 3 kg/h results in the reduction of NO x emission by about 50% without causing any significant change in the specific fuel consumption. Furthermore, the water injection in the intake manifold has little effect on the in-cylinder pressure and heat release rate of the CI engine under different operating conditions.

There are no comments yet on this publication. Be the first to share your thoughts.