19: Fluid Flow Computations

Command Purpose
avl_link Link to the AVL Indicom combustion analysis system.
blend_scales Manage fuel weighing operations using load cells, including controlling fill valve operations and computing fuel rates based on sampling processes.
change_res Change the formatted resolution of a variable or a list of variables.
cf_scales Provide control functions for a load cell fuel system that also uses a continuous flow meter and flow control valve.
cfv_1065 Compute air mass flow on a continuous basis per the 1065 standard using inputs from a specification file.
critical_flow Compute air mass flow on a continuous basis.
dummy_fr

Simulate fuel reading events by processing an event name to mimic the behavior of a fuel reading device task for testing purposes.

emcon_comm

Communicate with an AVL EMCON6 system to manage dyno control, handling data exchange via sockets, parsing configuration files, and processing input and output variables.

fa_total

Perform continuous fuel and air flow totalizing computations for engine performance, including summing rates and calculating metrics like air-fuel ratio.

fr_log Set a fuel reading log file name.
gas_blend Compute the ratios of three input gas streams to achieve a specified heating value and methane number for the resulting mixture.
gas_distribution Set the values of CyFlex array variables that contain information about emission gases and perform actions based on cylinder states.
gas_mix Compute the gas composition of a stream produced by mixing two or more gas streams, using the composition and mass flow of input streams to determine the mixed stream’s composition and mass flow.
gasfl Compute gaseous mass flow rates for up to 8 meters based on input specifications.
generic_scales Perform control functions for a directly controlled load cell fuel system. These functions include fill valve operation, and timing of a fuel reading. The outputs include the consumption rate, hp-specific consumption, and error statistics of the linear regression performed on the load cell value during the reading.
get_comp Display or return the value of a computed expression in the specified units.
lc_scales Perform control functions for a directly controlled load cell fuel system. These functions include fill valve operation, and timing of a fuel reading.
lfe Compute gas mass flow rates continuously for a Laminar Flow Element based on specified inputs and configuration.
oil_scales Measure the oil consumption rate using a load cell-based system by managing filling operations and computing rates based on measurements.
scales Control the fuel scale system by managing fill valve operations, weight selections, and timing for fuel readings based on transition events.
subsonic Compute continuous gas flow rates for subsonic venturi meters based on inputs from a specification file, performing real-time calculations and handling events for updates.
take_auto Request a single fuel reading with automatic weight selection.
take_autos Request continuous fuel readings and set the fuel weight selection to automatic.
take_dum_fr Take a dummy fuel reading.
take_fr Request a single fuel reading and optionally specify a fuel weight.
take_frs Request continuous fuel readings and optionally specify a fuel weight.
urea_flow Collect and process urea flow data, including monitoring total flow and handling fault events in a continuous background service.
Vcone_flow Compute the air mass flow on from a V-cone meter.
venture Compute Air Mass Flow for a nozzle.
volef Compute volumetric efficiency for a single engine manifold on a continuous basis.
volef2

Compute volumetric efficiency for an engine manifold on a continuous basis using variables specified in a configuration file, focusing on engine displacement as a variable.