A car powered by an internal combustion engine moves by transmitting the engine's rotational movement to the wheels via the transmission, driveshaft and differential. Front-wheel drive cars do not require a driveshaft, but rear-wheel drive and four-wheel drive cars use driveshafts to transmit power to the rear wheels.Know More
The system that transfers power from the engine to a car's wheels is called the drivetrain. The exact configuration of a drivetrain varies depending on which of the car's wheels power the car. The most common model found in many vehicles today is the front-wheel drive system. Another system, common in older vehicles, but also found in many sports cars, is rear-wheel drive. Lastly, some cars, especially those designed for off-road driving, use all four wheels to move the car.
In a front-wheel drive car, the front-mounted engine powers the front wheels, which pull the car forward. A component called the "transaxle" combines the functions of the transmission and differential and distributes the engine's power to the wheels using halfshafts. Since the front wheels must steer and drive the car, they use constant velocity, or CV, joints that maintain smooth power distribution even when wheels are turned completely to the left or right.
In a classic rear-wheel drive car, power is transmitted from a front-mounted engine to the rear wheels, which push the car forward. The transmission is directly attached to the engine, which is longitudinally mounted, and a long driveshaft connects it to the differential, which is located at the rear axle. The differential then transfers the engine's power to the rear wheels.Learn more about Engine
A crankshaft on a car is one of the major components of the engine that powers the drivewheels. The pistons create power in the engine using an up and down, or reciprocating, motion, and the crankshaft converts this to a circular or rotational motion.Full Answer >
Complete engine failure, unusual noises, low oil pressure, loss of power, misfiring, hard starting and overheating are all common signs of a seized engine. Acting on these signs by taking the vehicle to a mechanic or automotive professional is crucial to avoid potential long-term problems.Full Answer >
Poorly functioning fans and fan belts, low coolant levels and a dry engine can cause a car to overheat. Drivers can reverse some causes, whereas others are best left to a professional.Full Answer >
There are many potential causes for engine knocking noises, and they vary slightly from one vehicle to another. However, there are a few causes of knocking noises that are much more common than others. Some of the usual causes for a knocking sound from a vehicle's engine are low-quality fuel, incorrect spark plugs and deposits forming on the engine's cylinder walls, according to HowStuffWorks.Full Answer >