FDNY CoF – Use of LPG or CNG in Engine Fuel Systems (G-22) Practice Test

The two main components found in an LPG or CNG fuel system are indeed the fuel tanks and fuel delivery systems. Fuel tanks serve the essential purpose of storing the LPG or CNG under pressure, ensuring that there is a sufficient supply of fuel available for the engine's needs. The fuel delivery system, which includes components such as fuel lines, regulators, and injectors, is responsible for transporting the fuel from the tank to the engine while ensuring the correct pressure and flow rates are maintained for optimal performance.

In the context of alternative fuel systems, understanding these components is crucial because they directly influence how efficiently the engine operates. Issues in either the storage or delivery systems can lead to performance problems or safety hazards, making it vital for operators and technicians to be familiar with these critical elements.