How many fuel injectors per engine?

How many fuel injectors per engine?

• A. 18
• B. 12
• C. 24
• D. 20

Answer: (A)

Fuel injectors are the spray nozzles that introduce fuel into the combustor, and the number of injectors per engine is determined by how the flame is distributed across the burner area. You need enough spray points to cover all burners evenly so combustion remains stable from idle to full power. For this engine family used on the CRJ-550, there are eighteen fuel injectors per engine. This arrangement provides uniform fuel distribution around the combustion chamber, supporting efficient burning and reliable performance across operating conditions. Counts other than eighteen would imply a different burner configuration that isn’t used on this engine, so eighteen is the correct specification.

Fuel injectors are the spray nozzles that introduce fuel into the combustor, and the number of injectors per engine is determined by how the flame is distributed across the burner area. You need enough spray points to cover all burners evenly so combustion remains stable from idle to full power. For this engine family used on the CRJ-550, there are eighteen fuel injectors per engine. This arrangement provides uniform fuel distribution around the combustion chamber, supporting efficient burning and reliable performance across operating conditions. Counts other than eighteen would imply a different burner configuration that isn’t used on this engine, so eighteen is the correct specification.