Effect of hydrogen fuel at higher flow rate under dual fuel mode in CRDI diesel engine

Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine

“…Published studies on H 2 -diesel dual-fuel engines also report similar results, where it could be noted maximum reductions of 45.7 %, 11.5 %, and 39.0 % with different engines and hydrogen contribution percentages [ 25 , 39 , 40 ]. A common rail direct injection diesel engine featured a CO 2 maximum reduction of 14% [ 42 ]. Other studies showed a maximum reduction of 17 % in a single-cylinder diesel engine with a higher capacity [ 43 ].…”

Research on pressure control method for braking system of urban rail transit vehicles based on intelligent control principle

“…railway air brake control unit PBCU is usually composed of air charging solenoid valve and exhaust solenoid valve, emergency braking solenoid valve, empty and load vehicle valve, relay valve and several pressure sensors, pressure switches, etc. [8][9][10] . The schematic diagram of pressure control principle for traffic vehicle braking system is shown in Figure 1.…”

Effects of the fuel blend flow rate on engine combustion performance

“…The technique of dualfuel engine mode with little or no adjustment of the engine system was studied by Feroskhan et al (2017); Mahla et al (2017); Ambarita, (2018); Parthasarathy et al (2019); Estrada et al (2022); and Jamrozik et al (2022). To date, dual-fuel injection and combustion studies have focused on the gas fuel flow rate and mixing techniques of homogeneous charge compression ignition (HCCI) technology (Kumar and Rehman, 2014;Gnanamoorthi and Vimalananth, 2020;Atelge et al, 2022;Park et al, 2022;Zardoya et al, 2022). All these studies target the manipulation of fluid flow or its properties for investigating the effect on engine combustion and performance.…”

“…In this regard, Jamrozik et al (2022) stated the difference between the effect of both modes, i.e., the flame front will usually form around the injected stream and spread to the filled areas with a single engine; however, the limitations of fuel type will hinder this spread in a dual-fuel engine. Gnanamoorthi and Vimalananth (2020) concluded that the heat release rate (HRR), cylinder pressure, and NOx increased by 28.66%, 28.9%, and 7.3%, respectively, under 30 L/min of hydrogen fuel at brake power variation. A microscopic spray investigation discussed the effect of fuel physical properties and control parameters on atomization and submitted that the spray angle and droplet velocity depend on fuel viscosity (Sun et al, 2021).…”