Fuel Transport Characteristics of Spark Ignition Engines for Transient Fuel Compensation

The fuel transfer characteristic of the intake port of a fuel-injected spark ignition engine have been determined for engine warm-up conditions following cold starts at temperature down to -30°C and extending to fully-warm states, using a method based upon perturbing fuel injection rate and recordin...

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Bibliographic Details
Published in:SAE transactions 1995-01, Vol.104, p.36-43
Main Authors: Shayler, P.J., Teo, Y. C., Scarisbrick, A.
Format: Article
Language:English
Subjects:
Air flow
Coolants
Cylinders
Engines
Fuel injection
Fuels
Low temperature
Sensors
Surface temperature
Throttles
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Summary:The fuel transfer characteristic of the intake port of a fuel-injected spark ignition engine have been determined for engine warm-up conditions following cold starts at temperature down to -30°C and extending to fully-warm states, using a method based upon perturbing fuel injection rate and recording AFR response. The variation of τ and x parameters over a range of temperatures, engine speeds, AFR, and engine loads has been evaluated. Temperature and speed have greatest influence, AFR and load effects are small. Applications of the data to define transient fuel compensation requirements has been examined.
ISSN:0096-736X
2577-1531