Optimization of Injection Pressure and Injection Timing of a Diesel Engine Fuelled with Optimized Blend of B25 Cotton Seed Oil Biodiesel

Investigations were carried out to evaluate the performance of a medium grade low heat rejection (LHR) diesel engine consisting of air gap insulated piston with 3-mm air gap, with superni (an alloy of nickel) crown and air gap insulated liner with superni insert with different operating conditions of crude tobacco seed oil with varied injection timing and injection pressure. Performance parameters of brake thermal efficiency (BTE), exhaust gas temperature (EGT), volumetric efficiency (VE), coolant load (CL) and sound intensity were determined at various values of brake mean effective pressure (BMEP) of the engine. Exhaust emissions of smoke and oxides of nitrogen (NOx) were noted at different values of BMEP of the engine. Combustion characteristics of peak pressure (PP), time of occurrence of peak pressure (TOPP), maximum rate of pressure rise (MRPR) and time of occurrence of maximum rate of pressure (TOMRPR) were measured with TDC (top dead centre) encoder, pressure transducer, console and special pressure-crank angle software-package at the peak load operation of the engine. Conventional engine (CE) showed deteriorated performance, while LHR engine showed improved performance with crude tobacco seed oil (CTSO) operation when compared with pure diesel operation at recommended injection timing and pressure. The optimum injection timing was found to be 32°bTDC (before top dead centre) with CE while it was 30°bTDC with LHR engine with vegetable oil operation. The performance of both version of the engine improved with advanced injection timing and higher injection pressure with test fuels. Peak brake thermal efficiency increased by 4%, volumetric efficiency decreased by 8%, smoke levels decreased by 4% and NOx levels increased by 37% with vegetable oil operation on LHR engine at its optimum injection timing, when compared with pure diesel operation on CE at manufacturer’s recommended injection timing of 27°bTDC.

Download Full-text

Performance of Diesel Engine Fueled with Biodiesel (Coconut Oil and Cotton Seed Oil Blended With Diesel) and Analysis of Combustion Products

IOSR Journal of Mechanical and Civil Engineering ◽

10.9790/1684-1403057786 ◽

2017 ◽

Vol 14 (3) ◽

pp. 77-86

Author(s):

S. Nagendra ◽

A.V.N.S. Kiran ◽

D. Swetha ◽

S.M. Saleemuddin

Keyword(s):

Diesel Engine ◽

Cotton Seed ◽

Seed Oil ◽

Coconut Oil ◽

Combustion Products ◽

Cotton Seed Oil

Download Full-text

Influence of Metal Oxide Additives on Cotton Seed Biodiesel Fueled In CI Diesel Engine

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.a1061.1291s419 ◽

2019 ◽

Vol 9 (1S4) ◽

pp. 876-880

Keyword(s):

Diesel Engine ◽

Metal Oxide ◽

Experimental Analysis ◽

Cotton Seed ◽

Seed Oil ◽

Nano Particles ◽

Direct Infusion ◽

Performance And Emission ◽

Analysis Of Performance ◽

Cotton Seed Oil

Biodiesel is a standout amongst the most encouraging sustainable, elective and ecologically well disposed bio fuels that can be utilized in diesel engine without any modification. The exploratory work has been led on a four-chamber, four - stroke, direct infusion (DI) diesel motor. In this examination, biodiesel (Produced from cotton seed oil by transesterification procedure) and typical diesel have been utilized as a reference fuel. In this examination, two diverse nanoparticle fuel added substances in particular MgO2 and CeO2 were added to biodiesel at the option measurement of 250 and 500ppm. An experimental analysis of performance and emission for present of metal oxide nano-particles with cotton seed biodiesel used as a fuel in CI diesel engine and also optimized the quantity of dosing metal oxide can be effective for better performance. In this investigation could be done with present and absent of metal oxide additives are likewise displayed. The present of MgO2 nano-particles has been increased the flash point and viscosity of the biodiesel. It was clearly noticed that the Expansion of MgO2 nanoparicles resulted lower HC and NOx outflows.

Download Full-text