Implementation of Oxy-Fuel Combustion (OFC) Technology in a Gasoline Direct Injection (GDI) Engine Fueled with Gasoline–Ethanol Blends

Abstract

Nowadays, to mitigate the global warming problem, the requirement of carbon neutrality has become more urgent. Oxy-fuel combustion (OFC) has been proposed as a promising way of carbon capture and storage (CCS) to eliminate carbon dioxide (CO 2 ) emissions. This article explores the implementation of OFC technology in a practical gasoline direct injection (GDI) engine fueled with gasoline−ethanol blends, including E0 (gasoline), E25 (25% ethanol, 75% is gasoline in mass fraction), and E50 (50% ethanol, 50% is gasoline in mass fraction). The results show that with a fixed spark timing, φ CA50 (where 50% fuel is burned), of E50 and E25 is about 4.5 and 1.9°later than that of E0, respectively. Ignition delay (θ F ) and combustion duration (θ C ) can be extended with the increase of the ethanol fraction in the blended fuel. With the increase of the oxygen mass fraction (OMF) from 23.3 to 29%, equivalent brake-specific fuel consumption (BSFC E ) has a benefit of 2.12, 1.65, and 1.51% for E0, E25, and E50, respectively. The corresponding increase in brake-specific oxygen consumption (BSOC) is 21.83, 22.42, and 22.58%, respectively. Meanwhile, θ F , θ C , and the heat release rate (HRR) are not strongly affected by the OMF. With the increase of the OMF, the increment of θ F is 0.7, 1.8, and 2.2°for E0, E25, and E50, respectively. θ C is only extended by 1, 1.1, and 1.4°, respectively. Besides, by increasing the intake temperature (T I ) from 298 to 358 K under all of the fuel conditions, BSFC E and BSOC present slight growth trends; θ F and θ C are slightly reduced; in the meantime, φ CA50 , φ Pmax (crank angle of peak cylinder pressure), and the position of the HRR peak are advanced by nearly 1°.

Oxyfuel Combustion in IC Engines

“…This case is about a practical application of diesel oxyfuel combustion engine on an inland boat where there is possible space for installing the exhaust gas after treatment system [16,17]. As shown in Figure 21, the oxygen supply has no difference from that as used in Case Study 1.…”

Interactions of graphene with oxidants in a mixed atmosphere: synergistic effects of O2/H2O and O2/CO2 on gasification reactivity and kinetics

“…Controlling the kinetics of carbon gasification with O 2 , CO 2 , and H 2 O oxidants is a key technical challenge in applications such as the oxyfuel combustion (OFC) system, 1,2 integrated gasification combined cycle (IGCC), 3 underground coal gasification (UCG), 4,5 net-zero emissions steel production system, 6,7 etc. In the context of future low-carbon scenarios, these processes play a pivotal role in the transformation of coal utilization resources.…”

Comparative investigation on macroscopic and microscopic characteristics of impingement spray of gasoline and ethanol from a GDI injector under injection pressure up to 50 MPa

“…Regarding the powertrain system of ICE vehicles, owing to the benefits for engine thermal efficiency, Gasoline Direct Injection (GDI) engine has been the most popular choice instead of Port Fuel Injection (PFI) over the last few decades [6][7][8][9][10][11]. However, compared to PFI engines, the relatively high PM emissions from GDI engines become worthy of more attention, particularly the Euro 6c standard released in 2017 further restricted the PM number of GDI-powered vehicles from 6×10 12 #/km to 6×10 11 #/km [12][13] [14].…”