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advantage of fuel injection system

Asked by: 7259 views Aircraft Systems

hello.

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)

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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.

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