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But How Does it Work?

Ram 2500 at All Star Dodge Ram near St. Louis

Have you ever wondered how the engine on the Ram 2500 at All Star Dodge Ram near St. Louis works? Today we would like to provide you with a basic explanation on how the engine works. Remember, there is a lot more going on under the hood of the Ram 2500 than what we can explain here, but we think you are going to like learning about these powerful engines.

Most pickup trucks sold today have internal combustion engines. Passenger vehicles are powered by two main types of engines: compression, aka diesel, and spark ignition, aka gasoline.

Both spark ignition and compression ignition engines can work on a two- or four-stroke cycle. The more common of the two for automobiles, and certainly pickups, is the four-stroke. If we follow the path of the air entering a four-stroke engine, the strokes (or stages) in order are:

  1. Intake: The piston moves from top dead center to bottom dead center with the intake valve(s) open. If fuel is injected into the throttle body or intake manifold, then it is pulled into the cylinder with the air. If fuel is directly injected, then it may be injected near the end of the intake stroke and into the beginning of the compression stroke.
  2. Compression: All valves close and the piston moves from bottom to top dead center. Near the end of the compression stroke the spark plug fires, igniting the air-fuel mixture.
  3. Power: The piston moves from top to bottom dead center with all valves closed. The air inside the cylinder expands from the combustion of the air-fuel mixture. This provides the driving force for the engine.
  4. Exhaust: The piston moves from bottom to top dead center with the exhaust valve(s) open, pushing the exhaust out. (This information is compiled from news.pickuptrucks.com.)

Learn more about the Ram 2500 and its engine options at All Star Dodge Ram!

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