Browse Publications Technical Papers 890565
1989-02-01

A Model for Predicting Engine Torque Response during Rapid Throttle Transients in Port-injected Spark-ignition Engines 890565

Equations describing the transient behaviour of air and liquid fuel in the intake system of port injected engines are used to predict firstly the variations in air/fuel ratio and ultimately the variations in engine torque that result from rapid throttle openings. Corresponding values of measured and predicted data are compared over a range of conditions and show that the model predicts essentially the correct trends.

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