Combined Effect of Compression Ratio, Injection Pressure, and Injection Timing on Performance and Emission of a DI Compression Ignition Engine Fueled with Diesel–Aegle Marmelos Oil–Diethyl Ether Blends Using Response Surface Methodology

Abstract

Renewable energy research in support of the generously developing choice for diesel fuel automobiles has been concentrated because of environmental causes and hurly burly into petroleum combat. The test has been conducted in a light-duty single cylinder variable compression ratio (VCR) naturally aspirated multifuel research engine. Three input parameters, compression ratio (CR), injection pressure (IP), and injection timing (IT), are taken as input amends. In this study parameters are taken as 16, 17, and 18 for CR and 210 bar, 230 bar, and 250 bar for IP and 21°, 23°, and 25° before top dead center (bTDC) for IT. Experimental trials have been planned via statistical tool like design of experiments (DoE) to outline the resulting output, such as performance and emission. Better performance and lesser exhaust pollution are the desirable output factors by optimizing the injection system and compression ratio parameters by factorial design. The confirmatory tests validated that the models developed using response surface methodology (RSM) are adequate to describe the effects of CR, IP, and IT on the performance and emission characteristics using all test fuels. The error in prediction using RSM is within 5%.

Effect of exhaust gas recirculation and charge inlet temperature on performance, combustion, and emission characteristics of diesel engine with bael oil blends

“…29 Incomplete combustion occurs at lower IP due to insufficient atomization and too much IP leads to wall quench and charge dilution. 6,30 At higher IP and CR, the fuel particles hit the surfaces of combustion chamber due to lower clearance volume leading to HC emission. 6 The retardation of IT positively affects the BSFC, HC, and CO emissions.…”

“…6,30 At higher IP and CR, the fuel particles hit the surfaces of combustion chamber due to lower clearance volume leading to HC emission. 6 The retardation of IT positively affects the BSFC, HC, and CO emissions. 31 Advancing of IT enhances the combustion, lowers NOx emissions and opacity but reduces the maximum cylinder gas pressure and BTE.…”

“…3,4 Biofuels made from agricultural products support local industries, reduce the dependence on oil imports, improve farming incomes, and reduce the exhaust emissions. 5,6 Renewability, lower sulfur and aromatic contents, higher lubricity, biodegradability, and nontoxicity are the advantages of biofuels. Whereas the major disadvantage of vegetable oil is that higher kinematic viscosity which does not comply with standards of American Society for Testing and Materials (ASTM).…”

“…Ashok et al 13 examined the influence of IT and EGR on diesel engine fueled with biofuels and found that 10% EGR rate could reduce the NOx emissions effectively. Krishnamoorthi and Malayalamurthi 6 investigated the effect of compression ratio (CR), injection pressure (IP), and IT on performance, combustion, and emission behavior. The report shows that the addition of DEE in the ternary blends reduces the peak combustion temperature, hydrocarbon (HC), and smoke whereas increases BTE and carbon dioxide (CO 2 ).…”

Biodiesel at the Crossroads: A Critical Review

“…This isomer of butanol has several favorable properties for blending with diesel fuel, including very high cetane number, reasonable energy density for on-board storage, high oxygen content, low autoignition temperature, broad flammability limits, and high miscibility with vegetable oils and diesel fossil. Thus, DEE has been recently reported as a low-emission renewable fuel and high-quality combustion improver, for the utilization of several vegetable oils, as a biofuel in blends with diesel fossil [419,[442][443][444][445][446][447][448][449][450][451][452][453][454][455][456][457]. Similarly, dimethyl carbonate has been used as a component of triple mixtures to reduce the viscosity of straight vegetable oils [458,459].…”