TY  - JOUR
SN  - 03603199
IS  - 37
JF  - International Journal of Hydrogen Energy
N1  - cited By 21
TI  - Effect of fuel injection timing of hydrogen rich syngas augmented with methane in direct-injection spark-ignition engine
N2  - The product of gasification of solid biomass, also called syngas is believed to be good fuel for internal combustion engines in the move from the carbon based fuel to zero emission fuels. The only problem is its lower calorific value which is placed at one third of that of compressed natural gas (CNG). There are latest efforts to enhance the hydrogen rich syngas by augmenting it with methane so that the calorific value can be improved. This paper presents experimental results of the effect of the start of fuel injection timing (SOI) on the combustion characteristics, performance and emissions of a direct-injection spark-ignition engine fueled with a 20 methane augmented hydrogen rich syngas of molar ratio of 50 H2 and 50 CO composition. The engine was operated at fully open throttle and the start of fuel injection (SOI) was varied at 90, 120 and 180° before top dead center (BTDC). The experiment was conducted at lean mixture conditions in the low and medium engine speed ranges (1500â??2400 RPM). The spark advance was set to the minimum advance for a maximum brake torque in all the test parameters. The methane augmented hydrogen rich syngas was observed to perform well over wide range of operation with SOI = 180°CA BTDC. However, SOI = 120°CA BTDC performed well at lower speeds recording improved performance and emissions. Limitation of operable load was observed for both SOI = 120°CA BTDC and 90°CA BTDC due to an insufficient time for complete injection of fuel at lower relative airâ??fuel ratio (λ) with higher speeds. © 2017 Hydrogen Energy Publications LLC
ID  - scholars8387
EP  - 23855
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017354453&doi=10.1016%2fj.ijhydene.2017.03.091&partnerID=40&md5=2652df7eca14da633aa6368dd4be7e10
KW  - Calorific value; Combustion; Compressed natural gas; Engines; Hydrogen; Hydrogen fuels; Ignition; Methane; Molar ratio; Particulate emissions; Synthesis gas; Timing circuits
KW  -  Combustion characteristics; Compressed natural gasses (CNG); Direct injection spark ignition engines; Injection timing; Maximum brake torques; Performance; Performance and emissions; Syn-gas
KW  -  Direct injection
A1  - Hagos, F.Y.
A1  - Aziz, A.R.A.
A1  - Sulaiman, S.A.
A1  - Firmansyah
A1  - Mamat, R.
SP  - 23846
PB  - Elsevier Ltd
AV  - none
Y1  - 2017///
VL  - 42
ER  -