Welcome Guest. Sign in or Signup

1 Answers

advantage of fuel injection system

Asked by: 4193 views Aircraft Systems


my question is why the starting engine is easy in cold weather if aircraft has fuel injection system.

but in hot weather, it is difficult to start.

i've been learned that carburetor system is opposite..(cold weater difficult, hot weather easy)

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

1 Answers

  1. John D. Collins on Mar 24, 2013

    The primary advantage of a fuel injection system is that fuel is more evenly distributed to the cylinders than through a carburetor which uses the induction system. Also a carburetor uses the venturi to mix the fuel air mixture. There is a drop in temperature at this point and it can cause carburetor ice.

    Fuel injected engines are not difficult to start when the air temperature is hot, but they can be cantankerous when the engine itself is hot from being recently used. The normal problem is that the fuel in the injector and fuel lines vaporizes and won’t flow from the tank to the engine. Starting under these conditions often involves using a boost pump to purge the vapor while the mixture is set to not allow the fuel to enter the cylinders. Once the vapor is purged, then a more normal starting sequence is followed.

    +2 Votes Thumb up 2 Votes Thumb down 0 Votes

The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.