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The Effect of Fuel Composition and Manifold Conditions Upon Spray Formation from an SI Engine Pintle Injector
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English
Abstract
The performance of a pintle-type gasoline injector has been studied. Observations performed on test-rigs and running engines suggest that under conditions of low manifold pressure a ‘pencil-jet’ formation may replace the well atomized spray normally produced by the injector. Importantly, this phenomenon was not observed when using substitute fuels such as n-heptane.
It is concluded that both the mechanical design of the injector and the combination of the liquid properties density, viscosity and surface tension influence the ability of a given injector to produce a well atomized spray at low manifold pressures. The paper discusses measures to prevent pencil-jet formation.
Authors
Citation
Williams, P. and Beckwith, P., "The Effect of Fuel Composition and Manifold Conditions Upon Spray Formation from an SI Engine Pintle Injector," SAE Technical Paper 941865, 1994, https://doi.org/10.4271/941865.Also In
Gasoline: Composition and Additives to Meet the Performance and Emission Requirements of the Nineties
Number: SP-1054; Published: 1994-10-01
Number: SP-1054; Published: 1994-10-01
References
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