1996-02-01

Fuel Delivery System Model 960076

A fuel delivery system hydraulic model has been developed by coupling a distributed hydraulic network model with lumped models for the various components of the fuel system like the injectors, regulators, accumulators, etc. The resulting governing equations are linearized around the nominal system pressure and integrated using a fourth order Runge-Kutta algorithm with a variable time-stepping scheme. The model assumes isothermal behavior, negligible frictional losses and single-phase flow. The goal of the model is to study small signal type perturbations around the operating system pressure. Typical outputs from exercising the model are presented.
The model can be used to study fuel pressure and velocity transients throughout the system and to design the various fuel system components in a system context.

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