EFI-101 Outline INTRODUCTION About EFI University ENGINE TUNING BASICS The Four-Stroke Cylce Engine Revs vs Engine Cycles Volumetric Efficiency What are Standard Conditions? What are “Absolute” Conditions? What is Air Density? What is Air Flow (Volume vs Mass)? KPA/BAR vs InHg/PSI Brake Specific Fuel Consumption Brake Specific Air Consumption What is Air/Fuel Ratio? What is Lambda? BASICS OF ELECTRONICS Voltage Resistance Amps Vermont = Rhode Island WAVE FORMS Sine Wave Square Wave Amplitude Frequency Pulse Width Duty Cycle Output Control EFI SYSTEM COMPONENTS Sensors Map Sensor Throttle Position Sensor Coolant Temperature Sensor Intake Air Temperature Sensor Engine Speed Camshaft Position Sensor Knock Sensor Oxygen Sensor Actuators Ignition Outputs Fan Relays Air Conditioning Relays Injectors Choosing an Injector Control Tables Base Fuel Base Ignition Boost Control Idle Control HOW DOES IT ALL WORK? PV = NrT Calculating Injector Pulse Width TUNING THE ENGINE What Air/Fuel Ratio Does My Engine Want? Understanding Ignition Timing Cold Starting Fuel Requirements Ignition Requirements Dyno Tuning Road Tuning TOOLS OF THE TRADE DVOM Test Light Powered Test Light Vacuum Pump Fuel Pressure Gauge Oscilloscope Dynomometer Air/Fuel Ratio Monitor FUNDAMENTALS OF WIRING Wire Sizes Solder or Crimp? Using Relays Covering Wires Crimping Tools TUNING PROCESS: START TO FINISH Fuel Type Compression Ratio Induction Type Set Fuel Pressure Getting Started and Running Set Mechanical Base Timing Tune engine to idle properly after Warm-up Tune No-Load RPM sites Tune No-Load acceleration enrichment Tune light load RPM sites Tune medium to heavy load RPM sites Tune Full load RPM sites Review Data Logs and Power Graphs Make final changes Street or Track tuning and testing FUN FORMULAS Horsepower and Torque Horsepower Volumetric Efficiency Cubic Inch Displacements Rev Limits Fuel Injectors By: efi101 | March 4, 2014 in
