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THE ENGINE IS THE HEART OF YOUR CAR CRANKSHAFT AND VALVETRAIN

The engine is the heart of your car, but instead of pumping blood, the engine pumps air and fuel. The engines main function is to convert air and fuel into rotary motion so it can drive the wheels of the car. How does it do that??.... Well let's start with individual parts of the engine then we will get into the actual mechanics.

Crankshaft:

The crankshaft is connected to the pistons via a connecting rod. As the piston moves up and down in the cylinder it rotates the crankshaft and converts the straight line motion into rotary motion.

Valvetrain:

The valvetrain consists of valves, rocker arms, pushrods, lifters, and the cam shaft. (Shown in above picture in blue, yellow, and green) The valvetrain's only job is that of a traffic cop. It lets air and fuel in and out of the engine at the proper time. The timing is controlled by the camshaft which is synchronized to the crankshaft by a chain or belt.

Now that we have a general overview of the parts involved let's talk about what happens. Most automotive engine today is 4-stroke (or 4-cycle) engines, meaning they have four distinct events which make up the cycle.

Source: Autoeducation.com

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Today's car repair blog: nzymkl - 2018-01-20 21:32:54