Instantaneous Fuel Flow Rates Measured in High Pressure Pipeline of Gasoline Direct Injection Engine AutoSpace Corporation

Format:

Conference/Event

Author/Creator:

Ismailov, Murad M., author.

Conference Name:

International Spring Fuels & Lubricants Meeting (2001-05-07 : Orlando, Florida, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

AbstractTransient dynamics of two injection flows, upstream and downstream from a swirl injector, are investigated. Capillary n-heptane pipe flow is measured using laser Doppler anemometer to obtain the instantaneous time series of centerline velocity and to reconstruct a series of instantaneous and integrated flow rates and pressure gradients. A collimated laser sheet and a high-speed video camera visualize injected spray flow. Finally, the phase Doppler anemometer measurements are introduced to analyze instantaneous patterns of droplets, velocity-size and number density in the fuel spray.All measurements are employed at similar temporal resolution close to 30 μs. Results indicate that both flows are strongly time-dependent and well correlated in time-phases. Initial transitions are completed by 100 μs. Opening or closing of the injector valve affects both flows as strong delta oscillation causes spray penetration dynamics and a post injection effect.A combination of non-intrusive laser-based techniques allows indication of the basic injection and spraying characteristics needed to optimize high-pressure fuel injectors and the late injection combustion mode

Notes:

Vendor supplied data

Publisher Number:

2001-01-1973

Access Restriction:

Restricted for use by site license