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Understanding Diesel Engine Parts: Top 4 Things You Need to Know

Do you know the difference between a diesel and a gasoline engine?

It seems like a simple question if you’re a car enthusiast. However, if you’re new to the automobile scene, talking about diesel vehicles can be confusing if you don’t know much about them.

Here are the things to know about diesel engine parts that keep them running.

Keep reading to learn about diesel engine parts and their functions.

1. Pistons

When it comes to diesel engine parts, one of the essential components is the piston. Pistons are responsible for converting the energy created by fuel combustion into mechanical energy, which in turn powers the engine.

Pistons are from solid and durable materials such as forged steel or cast iron connected to the crankshaft via a connecting rod, and they move up and down in the cylinder.

The piston’s up and down motion creates the pressure necessary to power the engine subject to a lot of wear and tear, and they must be replaced as part of routine maintenance.

2. Connecting Rods

The connecting rods are what connect the pistons to the crankshaft. The crankshaft converts the up and down movement of the pistons into a rotational force, which turns the car’s wheels.

Connecting rods are very strong steel, but they are also flexible. This flexibility is necessary because as the pistons move up and down, the connecting rods need to be able to bend so that they can continue to connect the pistons to the crankshaft.

The connecting rods connect the pistons using piston pins. The other end of the connecting rod connects to the crankshaft using a connecting rod bearing.

3. Injectors

Diesel engines rely on fuel injectors as part of the fuel system to deliver a precise amount of fuel into the engine cylinders. The engine computer controls the injectors and must withstand the engine’s high-pressure environment.

Fuel injectors are essential parts of a diesel engine that needs to maintain to keep the engine running smoothly. Over time, the injectors can become clogged or damaged and need to replace.

When replacing injectors, it is essential to use a set that is compatible with your engine. Incompatible injectors can cause engine damage or poor performance. Be sure to consult a professional or check BD Diesel if unsure which injectors to use.

4. Engine Block

Diesel engine blocks are typically made from cast iron or cast aluminum. The iron block is the more durable of the two, but it is also heavier. The aluminum block is lighter and easier to work with but is not as durable.

Both blocks will have four main bearings to support the crankshaft. The crankcase is the lower part of the engine block that contains the crankshaft and the pistons.

The cylinder heads bolt to the top of the engine block and house the valves. The oil pan is at the bottom of the engine block and holds the engine oil for the lubrication system.

Importance of These Diesel Engine Parts

To understand how a diesel engine works, it is essential to know these main parts. The piston, connecting rod, injectors, and engine block. Each of these diesel engine parts has a specific function that helps the engine to run smoothly.

By familiarizing yourself with these parts, you will better understand how your diesel engine works.

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