Edelbrock Pro-Tuner, User Manual

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Appendices 225
7.5 Glossary
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Glossary of Terms
Term Definition
A
Adaptive Learn An advanced engine control strategy that performs adjustment
of volumetric efficiency map based on feed forward information
from a Mass Air Flow (MAF) sensor and feedback information
from the Oxygen sensor.
Air Fuel Ratio Ratio of air to fuel being ingested by the engine.
Alpha N A simplistic strategy that uses throttle angle and RPM to look
up an injector pulse width from a table. A simple compensation
scheme is used based on MAP, Air Inlet Temperature (IAT),
and coolant temperature (ECT). This mostly used if the engine
has very low engine vacuum, causing a weak MAP signal.
Oftentimes, the Speed/Density strategy is a better fit for all
around drivability and ease of tuning.
Auto Table Refresh Optional feature that is especially useful in the Volumetric
Efficiency Map. The entire table values (and associated 3D
chart) are refreshed to show any Adaptation that may have
occurred.
B
Baro Barometric Pressure : Local atmospheric pressure.
Battery Volts Electrical voltage as measured by the ECU.
Bottom Dead Center (BDC): Piston at its lowest point of travel.
Brake Specific Fuel
Consumption (BSFC): Brake Specific Fuel Consumption; in an engine, the
ratio of the rate at which fuel is flowing into the engine to the
brake horsepower being generated
C
Cam Sensor Sensor that indicates camshaft position and used to determine
cylinder intake events and position of the engine cylinders
within its cycle (compression stroke or overlap), since the
camshaft is rotating at ½ crank speed in a 4 cycle automotive
engine. This allows for individual cylinder control.
CAN Controller Area Network: An electronic communications
method for connecting various controllers.