Multi-input multi-output machine learning predictive model for engine performance and stability, emissions, combustion and ignition characteristics of diesel-biodiesel-gasoline blends. (1st January 2023)

• Record Type: Journal Article
• Authors: Zandie, Mohammad; Ng, Hoon Kiat; Gan, Suyin; Muhamad Said, Mohd Farid; Cheng, Xinwei
• Is Part Of: Energy. Volume 262:Part A(2023)
• Publication Date: 2023-01-01
• Subjects: Artificial neural networks -- Diesel-biodiesel-gasoline mixtures -- Combustion characteristics -- Engine performance -- Exhaust emissions; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2022.125425
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: In this research, a multi-input multi-output artificial neural network (MIMO-ANN) is developed, in which 14 features associated with the engine performance and stability, emissions, combustion and ignition characteristics of diesel-biodiesel-gasoline mixtures are meant to be modelled by a diverse combination of engine/combustion parameters. The selected targets comprise brake specific fuel consumption (BSFC), brake thermal efficiency (BTE), combustion efficiency, coefficient of variance (COV), NOx, CO2, CO and HC emissions, exhaust temperature (Texh ), in-cylinder pressure (Pcyl ), maximum pressure rise rate (MPRR), heat release rate (HRR), combustion duration (CD) and ignition delay (ID). The inputs variables entail the load, speed, compression ratio, gasoline, biodiesel and diesel ratios, crank angle (CA), injection temperature (Tinj ), injection pressure (Pinj ), brake mean effective pressure (BMEP) and start of injection (SOI). Sensitivity analysis and outlier detection are applied in order to eliminate less-effective inputs/data points. The prepared data sets are then used to train and test the ANN model, in conjunction with benchmarking the model outcomes using coefficient of determination ( R 2 ), average absolute relative deviation ( AARD ) and relative mean squared errors ( RMSE ). The R 2 ranged within 0.9804–0.9998, which is close to unity, proving that the proposed network is accurately capable of predicting the intended combustion characteristics. Highlights: A MIMO-ANN model is developed for diesel-biodiesel-gasoline blends combustion. Four data sets are prepared along with outlier detection and sensitivity analysis. Engine/combustion features are predicted for diesel-biodiesel-gasoline blends. The training algorithm, transfer function and number of neurons are optimised. The model outputs are compared to the experimental data using R 2, AARD and RMSE.