Analysis of the effect of syngas substitution of diesel on the Heat Release Rate and combustion behaviour of Diesel-Syngas dual fuel engine

The Heat Release Rate (HRR) model of ICEs is known to be most sensitive the ratio specific heats, ?, which depended on temperature and excess air ratio, ?. HRR cannot measured directly. As such, accurate models, as well expressions ? ? are required behaviour mathematically. In this work, an improved based ?(T,?) was used investigate effect syngas substitution diesel at constant energy combustion phasing in a 5.7 kW engine out 4.3 generator output, single cylinder, dual fuel, Reactivity Controlled Compression Ignition (RCCI) mode CI engine. An global ?g analysis fuel run 10, 25, 45% (by energy) 1, 2, 3, 4 loads (generator output) for each substitution. validated by comparing consumption (input per (thermodynamic) cycle predicted tested conditions. values Leeds were also compared predictions models that ?(T). overall average error input 2.41% with standard deviation 1.65. errors other ranged from 6.26 8.29%. SoC, MFB50, PP, PHRR occurred later diesel-syngas fuels baseline due increased ignition delay fraction increased. current work showed use engines Nigeria (a developing country) can potentially reduce CO2 emissions up ?0.26 million tonnes.