Basic engine building?

Question

I want to know the baisic of engine building. The parts needed, what they do and the cost. Plz keep in mind i know almost nothing about engines now so don't go conplicated. Treat me as if i'm 13.

A blond 13.

Answer 1

Before explaining the operation of the four-stroke engine, some of the internal parts must be identified. Refer to the drawing of the basic internal combustion engine. Throughout the presentation, these parts are mentioned, so an understanding of what they do should be helpful. The Intake Valve opens at a precise time to allow the air/fuel mixture to enter the cylinder. The Exhaust Valve opens at a precise time to allow the burned gases to leave the cylinder. The Spark Plug ignites the air/fuel mixture in the cylinder, which creates an explosion. The force of the explosion is transferred to the Piston. The piston travels up and down in a Reciprocation Motion. The force from the piston is then transferred to the Crankshaft through the Piston Rod (connecting rod). The piston rod converts the reciprocating motion of the piston, to the Rotating Motion of the crankshaft. Now that the basic parts are identified, lets go through the four strokes of the internal combustion engine, which are Intake, Compression, Power, and Exhaust.

Answer 2

The pistons go up and down in the cylinders, which are the holes in the engine block. They are attached to the crankshaft so that the up/down motion causes the crankshaft to go round. The pistons are connected to the crankshaft by connecting rods that are pinned to the pistons.

To make the pistons leakproof in the cylinders, they have special piston rings around them that seal the sides. There are usually three, the bottom ring being the oil ring that spreads a thin film of oil on the cylinder wall.

The crankshaft causes the camshaft to rotate via a timing chain (or gear) and the rotating cams on the rotating camshaft then open and close the valves that let in the air for burning, or let out the exhaust (there are valves for both). Exhaust gasses travel out the exhaust manifold, or exhaust header, to the exhaust pipe.

The camshaft also gear-drives the distributor shaft, which rotates and thus supplies the spark to each cylinder in its turn. the spark ignites the air-gas charge and starts it burning (charge burns, it does not explode).
The camshaft also gear-drives an oil pump located down in the oil pan, which is attached to the bottom of the block and holds the oil resevoir. The oil pump sends lubricating oil through the oil filter and around the engine to the moving parts. Most moving parts have bearings and they get lubricated also.

The crankshaft is also bolt-connected to the flywheel, a weighed disk that helps the engine spin smoothly, and it is belt-connected to the water pump which drives the cooling solution through the block and into the radiator to cool the engine.

The block is capped off on top by the heads which seal the tops of the cylinder holes and also hold the valves (intake and exhaust) and the spark plugs. Gaskets are used to create a perfect seal. Rocker covers cover the tops of the heads.
Intake air moves through the air cleaner, through the intake manifold, through the heads, past the open intake valves, and into the cylinders, where it then mixes with injected fuel. The air is drawn in by the downward suction of the pistons in their cylinders.

Fuel is supplied through fuel injectors. They squirt fuel directly into the cylinders, timed properly with the piston stroke, usually timed from the camshaft.


I tried to make a lot of information plain and simple, there are a lot of new vocabulary words there. Hope it all helps.

Answer 3

You don't even say what type of engine.....
I'm afraid you bite off more than a 13 Yr. old can chew.
Google or Wiki:
Steam engine, Turbine engine, Otto cycle
Diesel Engine,
And you'll get some clear explanations and diagrams.
As to building one, ... there's a lot of calculation that goes into that.

Answer 4

buy an hanes manual for the particular engine and get some parts look for the engine first on the internet