ABSTRACT
In this paper, the ignition delay of jojoba bio-diesel and its blends with gas oil was measured. For this purpose, a shock tube test set up was fully instrumented for delay measurement with two piezo-electric pressure transducers, dual mode charge amplifier, data acquisition card, laptop computer with suitable LabVIEW software. The test variables included the type of fuel, equivalence ratio, ignition temperature and ignition pressure. It was found that increasing the percentage of jojoba bio-diesel in the blend with gas oil exhibited a decrease in the ignition delay. Rich and lean mixtures produced long delays whilst the minimum delay occurred near the stoichiometric mixture. Higher ignition pressures and temperatures reduced the delay. Jojoba biodiesel and its blends were considered to be suitable for running the conventional diesel engine without modification.