This paper describes a multi-point fuel injection system utilizing fiuidic devices as fuel injector stages for spark ignition engines. The novel fuel injector unit consists of no-moving-part fluidic devices controlled by a solenoid valve interface and unique air/fuel mixing nozzles for good fuel atomization.
The results of laboratory tests show that the fluidic device stage has a fast dynamic response and its on/off switching delay to the control flow signal is within 1 ms. A balanced fuel distribution at the four fluidic injector stages (for a four-cylinder engine) and well-atomized air/fuel mixture at the mixing nozzles were obtained from this injection system.
The engine tests show that this fuel injection system provides an extended lean limit of the air/fuel mixture, 7 per cent improvement in fuel economy and 10 per cent reduction in hydrocarbon (HC) emissions compared with a base-line carburetted fuelling system due to the improved fuel distribution and air/fuel mixing quality by the multi-point fluidic injection system.
Hybrid Solid State Fluidic Technique in Engine Fuel Injection Systems
1993-01-01
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Hybrid solid state fluidic technique in engine fuel injection systems
Online Contents | 1993
|Hybrid solid state fluidic technique in engine fuel injection systems
Kraftfahrwesen | 1993
|Electro-fluidic Devices as Fuel Injectors for Spark-ignition Engine Fuel Injection Systems
SAE Technical Papers | 1991
|Electro-fluidic device as fuel injectors for spark-ignition engine fuel injection systems
Kraftfahrwesen | 1991
|Evaluation of Engine Operating Characteristics on a Fluidic Device Based Fuel Injection System
SAE Technical Papers | 1993
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