HPAcademy Understanding AFR Course
Original price was: $89.00.$50.00Current price is: $50.00.
Description
Taking this course will give you a solid understanding of how and where to set the air fuel ratio when tuning any engine. A key aspect to choosing the correct AFR is understanding that every engine is different and you can’t approach each tuning job with the same air fuel ratio targets. This course will explain how the air fuel ratio effects combustion, economy and emissions, and in turn how this effects our tuning requirements. You will learn about the different areas of engine operation and how the fuel requirements of the engine vary as load and rpm change. Most importantly though, you will learn a simple four-step approach to deciding on the correct air fuel ratio for your engine. These steps include:
- Analysing the operating specifics of your engine
- Defining a starting target AFR map
- Tuning the engine
- Evaluating changes in AFR
At the end of this course you will have the confidence to choose the correct air fuel ratio for any engine and any application, ensuring maximum performance and reliability.
WHAT YOU WILL LEARN
- What AFR (Air Fuel Ratio) and Lambda mean
- How the AFR requirements change with load and rpm
- How the AFR requirements vary for different fuels
- How to find the correct AFR for your particular engine
- How AFR effects power
- How AFR effects the knock
Course Curriculum
INTRODUCTION
Introduction
What is AFR?
Disclaimer
How to use this Course
TOOLS OF THE TRADE
Tools of the Trade
Calibrating Your Wideband
DEFINING AFR
Defining AFR
Stoichiometric AFR
AFR vs Lambda
Setting the Stoichiometric AFR
HOW AFR EFFECTS THE ENGINE
How AFR Effects The Engine
Effect of AFR on Knock Threshold
Effect of AFR on Emissions
Effect of AFR on Economy
Effect of AFR on Power
AFR vs Fuel Type
Lean Tuning
Effect on Exhaust Gas Temperature (EGT)
THE AFR TARGET MAP
The AFR Target MAP
Idle, Cruise and High RPM Vacuum
Start-up and Dead Zones
Full Load N/A – Transition F/I
Medium Boost/High Boost
Filling In The Gaps
Special Circumstances
HOW TO CHOOSE THE CORRECT AFR
How to Choose the Correct AFR
Step 1 – Operation Specifics
Step 2 – Target AFR MAP
Step 3 – Tune The Engine
Step 4 – Evaluating Changes in AFR
FUEL COMPENSATIONS
Fuel Compensations
Air Temperature Compensation
Engine Load Compensation
Ignition Compensation
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