HOW CAR WORKS

HOW CAR WORKS

COMBUSTION CHAMBER

A combustion chamber is part of an internal combustion engine in which the fuel/air mix is burned.

In spark ignition engines, such as petrol (gasoline) engines, the combustion chamber is usually located in the cylinder head. The engines are often designed such that the bottom of combustion chamber is approximately in line with the top of the engine block.

One C.C. is directly above each cylinder, with a piston sliding in each cylinder. The explosive force created pushes the piston down, creating the motion which moves car.

As an engine runs, pistons pump up and down, one after another, in a carefully arranged order. This up and down movement changes to spinning motion by the action of a crankshaft. The spin motion rotates the wheels.

An automobile engine really has just one job - to create spinning motion.

CRANKSHAFT

A crankshaft changes the pumping motion of the pistons into spinning motion.

It has smooth surfaces for connecting to a block and tiny passageways inside for delivering lubricating oil.

Balancing lobes are used as counterweights to balance a crankshaft and prevent damage from wobbling.

It fits lengthwise to the underside of an engine block. At the front of an engine, rubber drive belts attach to the end of a crankshaft to deliver power to other car accessories.

At the rear of a block, drive train parts attach to the crankshaft-end and transfe power to the wheels.

Oil seals prevent oil leaks where a crankshaft extends through a block. These rubber "o-rings" fit around the end of a crankshaft to prevent oil from leaking out, even while a crankshaft turns.

A oil pan covers and protects a crankshaft from road dirt and moisture.

The area inside an oil pan is called the crankcase and holds the engine oil.

An oil plug is threaded into the bottom of a oil pan to drain engine oil.

CYLINDER

In a reciprocating engine (MOTORE A MOVIMENTO ALTERNATIVO), the cylinder is the space in which a piston travels.

The piston slides inside the cylinder, propelled to the energy generated from the combustion of the air/fuel mixture in the combustion chamber.

In an air-cooled engine, the walls of the cylinders are exposed to the airflow, to provide the primary method of cooling to the engine. 

PISTON

Its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via  connecting rod

An internal combustion engine is acted upon by the pressure of the expanding combustion gases in the combustion chamber space ,at the top of the cylinder. This force then acts downwards through the connecting rod and onto the crankshaft. The connecting rod is attached to the piston by a wrist pin.