Title: Identify the types of fuel delivery systems, system components, and fuel types.
Course: Small Engine Repair (20110-36) > Section: Examining Functions and Types of Fuel Systems

Identification should include

- types of fuel systems
  - carburetion
    - natural draft
    - updraft
    - downdraft
  - fuel injection systems
    - electronic
    - mechanical
    - throttle-body injection (TBI)
    - central fuel injection (CFI)
    - port injection
    - sequential fuel injection
    - multiport fuel injection (MFI)
    - central multiport fuel injection (CMFI)
- fuel delivery system components
  - fuel storage tank and cap
  - fuel pump
  - pressure regulator
  - fuel injectors
  - fuel filters
  - fuel strainers
  - fuel lines
  - hoses
  - fuel shut-off valve
  - fuel manifolds
- types of fuels
- grades of fuels
- alternative fuels (e.g., ethanol, biodiesel, propane, natural gas)
- vapor collection system.

Process/Skill Questions:

- What are the most commonly used fuels in small engines?
- What has influenced fuel usage the most, historically: technology, economics, or politics?
- What are the functions of the individual components of a fuel delivery system?
- How do these components work together to filter and deliver fuel?
- What path does the fuel follow from the tank to the engine through each of these components?