Let’s explore three of the most important features of a car.
The Engine
The engine is the heart of your car. It is a complex machine built to convert heat from burning gas into the force that turns the road wheels.
The chain of reactions which achieve that objective is set in motion by a spark, which ignites a mixture of petrol vapor and compressed air inside a momentarily sealed cylinder and causes it to burn rapidly. That is why the machine is called an internal combustion engine. As the mixture burns it expands, providing power to drive the car
The Brake
Modern cars have brakes on all four wheels, operated by a hydraulic system. The brakes may be disc type or drum type.
The front brakes play a greater part in stopping the car than the rear ones because braking throws the car weight forward on to the front wheels.
Many cars, therefore, have disc brakes, which are generally more efficient, at the front and drum brakes at the rear.
All-disc braking systems are used on some expensive or high-performance cars and all-drum systems on some older or smaller cars.
The Electrical System
The electrical system of a car is a closed circuit with an independent power source the battery. It operates on a small fraction of the power of a household circuit.
Current flows along a single cable from the battery to the component being powered, and back to the battery through the car’s metal body. The body is connected to the earth terminal of the battery by a thick cable.
This type of circuit is called an earth-return system any part of it connected to the car body is said to be earthed.
The strength of the current is measured in amperes (amps); the pressure that drives it around the circuit is called voltage (volts). Modern cars have a 12-volt battery. Its capacity is measured in amp/hours. A 56 amp/hour battery should be able to deliver a current of 1 amp for 56 hours, or 2 amps for 28 hours.
If the battery voltage drops, less current flows, and eventually there is not enough to make the components work.
Pepo Auto Parts, is an Automobile Parts seller in Ethiopia founded in 2015. Pepo provides selection of high quality genuine spare parts especially focusing on MERCEDES and RENAULT Automobiles.
