Improvement in performance of CI engine using various techniques with alternative fuel

ABSTRACT

As a renewable, sustainable, and alternative fuel for combustion ignition (CI) engines, researchers are more prone to accept biodiesel as fuel compared to diesel. Auto-ignition, as well as decomposition reactions, significantly rely on spray characteristics and air-fuel mixing in conventional diesel engines. While the accumulation of fuel-rich mixture in the combustion chamber, also strongly responsible for lesser performance and emissions of carbon mono oxide (CO), hydrocarbon (HC), nitrogen oxide (NOx), and particulate matters (PM) of the diesel engine. CI engines running on alternative fuels (AFs) such as biodiesel, vegetable-based fuels do not meet satisfactory performance due to higher rheological properties and lower heating value. Strict emission regulation from CI engines has transferred the conventional combustion to advanced combustion by intending to lower harmful emissions. Thus, this is the mandate to question what are the techniques and modification which may improve the performance and emissions from a diesel engine. In this article, the effect of noncircular orifices were assessed to analyze the atomization and air-fuel mixing of fuel and their impact on performance and emissions. The advantages and disadvantages of modification in the intake manifold, injection parameter, and fuel modification were thoroughly analyzed based on performance and emissions. In the end, this is worth to note that noncircular orifices especially elliptical orifice imparted better atomization and fuel-air mixing than a circular orifice. In addition, air swirl through guide vanes in the intake manifold exhibited several benefits. It revealed an increase in thermal efficiency and reduced NOx than nonswirling in a diesel engine.

KEYWORDS:

• Spray characteristics
• airflow characteristics
• nozzle geometry
• performance

Additional information

Notes on contributors

Prem Yadav

Prem Shanker Yadav is working as an Assistant Professor in the Department of Mechanical Engineering, JSS Academy of Technical Education, Noida. He did B.Tech in Mechanical Engineering from JSS Academy of Technical Education, Noida; M.Tech in Applied Mechanics from IIT Delhi. His research interest includes; Alternative fuel, special emphasis on spray characteristics of fuel in CI engine, Computational Fluid Dynamics.

Naveen Kumar

Naveen Kumar was born in August 1967 in Uttar Pradesh, India; Prof. Naveen Kumar did B.Tech from Dayal Bagh Educational Institute, Agra. M.Tech from IIT Delhi and PhD from the University of Delhi. He is a fellow of the Institute of Mechanical Engineers(FIMechE), UK. Fellow of Institute of Engineer(FIE), India and Charted Engineer, Engineering Council, UK. His research interest includes; Alternative fuels with special emphasis on biofuel, decentralized energy system, renewable energy, waste recycling and sustainable development. Presently working as Professor in the Department of Mechanical Engineering since 1996; Prof. Kumar possesses 27 years of academic, industry and research experience. He has published more than 100 research papers in the international journal of repute and more than 100 in Indian journal and conferences.

Raghvendra Gautam

Raghvendra Gautamis working as an Assistant Professor in the Department of Automobile Engineering in Delhi Technological University. He did B.E in Mechanical Engineering Department from Delhi College of Engineering and M.Tech in thermal Engineering from Delhi College of Engineering; PhD from Delhi Technological University. He worked as Sr. Engineer in Shree Cement Ltd. He has published more than 20 research paper in international journal repute and conferences.