Evaluation of Engine Operating Characteristics on a Fluidic Device Based Fuel Injection System

Paper #:
  • 930324

Published:
  • 1993-03-01
Citation:
Huang, Q., Jones, B., and Leighton, N., "Evaluation of Engine Operating Characteristics on a Fluidic Device Based Fuel Injection System," SAE Technical Paper 930324, 1993, https://doi.org/10.4271/930324.
Pages:
19
Abstract:
A prototype multipoint fuel injection system which utilises fluidic injection devices as fuel injectors for spark ignition engines is described in this paper. The unique fluidic injector unit combines four no-moving-part, monostable fluidic devices controlled by a solenoid valve interface and air-fuel mixing nozzles for well atomised air-fuel mixture.The design philosophy and operating characteristics of the novel integrated fluidic injector unit for engine applications are discussed in details in this paper. The initial engine tests on this fluidic injection system show that it provides an extended lean limit of the air/fuel mixture (by 2.2 air/fuel ratio), 7% improvement in fuel economy and 10% reduction in HC emissions compared with a base line carburetted system. These results confirmed that the use of the fluidic fuel injection system resulted in improved fuel distribution, better air/fuel mixture preparation and faster flame propagation speed.
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