An experimental investigation into the effect of hydrodynamic cavitation on diesel

Lockett, R. D.; Jeshani, Mahesh

doi:10.1177/1468087413497005

Cited by 11 publications

(12 citation statements)

References 29 publications

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“…Lockett and Jeshani [8] have attempted to separate out the effect of bulk fluid temperature from the effect of cavitation on the rate of degradation by hydrodynamic cavitation flow. They were able to demonstrate separate effects of temperature and cavitation on a number of commercial diesel samples.…”

Section: Discussionmentioning

confidence: 99%

“…The optical arrangement and calibration employed for the laser extinction measurement system was similar to that employed by Lockett and Jeshani [8], with the removal of the final mirror, and the location of the transmission laser power meter along the axis of the laser path.…”

Section: Optical Extinction Measurement Systemmentioning

confidence: 99%

“…The values for tfs 2 and rf were determined through a series of calibration tests described in detail by Lockett and Jeshani [8], they were found to be 0.945 ± 0.010 and 0.093 ± 0.005, respectively.…”

Section: Optical Extinction Measurementsmentioning

confidence: 99%

“…A high-pressure, continuous flow rig similar to the rig described by Lockett and Jeshani [8] was designed to allow continuously recirculating flow of diesel through a permanently open injector nozzle into a receiving cylinder. A schematic of the rig is presented in Figure 1.…”

Section: High-pressure Continuous Cavitation Flow Rigmentioning

confidence: 99%

“…Two cavitation recirculation flow rigs have been designed and manufactured, one of which was described in Lockett and Jeshani [8]. The experimental rig described in this paper is based on a similar design, using a high-pressure diesel pump.…”

Section: Introductionmentioning

confidence: 99%

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An Optical Characterization of the Effect of High-Pressure Hydrodynamic Cavitation on Diesel

Lockett¹,

Fatmi²,

Kuti³

et al. 2016

SAE Technical Paper Series

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Most modern high-pressure common rail diesel fuel injection systems employ an internal pressure equalization system in order to provide the force necessary to support needle lift, enabling precise control of the injected fuel mass. This results in the return of a substantial proportion of the high-pressure diesel back to the fuel tank. The diesel fuel flow occurring in the injector spill passages is expected to be a cavitating flow, which is known to promote fuel ageing. The cavitation of diesel promotes nano-particle formation through induced pyrolysis and oxidation, which may result in deposit formation in the vehicle fuel system.A purpose-built high-pressure cavitation flow rig has been employed to investigate the stability of unadditised crude-oil derived diesel and a paraffin-blend model diesel, which were subjected to continuous hydrodynamic cavitation flow across a single-hole research diesel nozzle. Continuous in-situ spectral optical extinction (405 nm) has been employed to identify, determine and measure variations in fuel composition as a function of the cavitation duration.The results of two high-pressure diesel cavitation experiments are reported. The first dealt with the effect of injection pressure on the rate of induced variation in chemical composition of diesel, and concluded that faster degradation of the fuel occurred at higher pressure.The second experiment involved an investigation into the variation in composition occurring in diesel fuel and the paraffin-blend model diesel, subjected to cavitating flow over a longer duration. Observed differences suggest that the high-pressure cavitation resulted in hydrodynamic sono-chemical destruction of aromatics in the diesel, which is believed to lead to carbonaceous nano-particle formation.

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Section: Discussionmentioning

confidence: 99%

Section: Optical Extinction Measurement Systemmentioning

confidence: 99%