A gear also known as “gear wheel” is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque. Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine. Geared devices can change the speed, magnitude, and direction…
· Heat escaping from the cylinders and the engine. Not all of the energy created in combustion is able to drive the car. · Friction between moving parts converts some of the energy to heat which is dissipated to the environment. Keeping your engine well lubricated will help reduce this loss. · Pumping fuel to the engine. Since…
The efficiency of the engine depends to a large extent upon the following criteria: · Compression · Combustion Process · Air/Fuel Mixture · Mechanical Design · Lubrication 1) Compression The higher the Compression Ratio or the pre-compression pressure, then the higher is the thermal efficiency of the internal combustion engine. This results in a better fuel…
Car manufacturers are constantly playing with all of the following variables to make an engine more powerful and/or more fuel efficient. 1. Increase displacement – More displacement means more power because you can burn more gas during each revolution of the engine. You can increase displacement by making the cylinders bigger or by adding more cylinders….
Three fundamental things can happen: a bad fuel mix, lack of compression or lack of spark. Beyond that, thousands of minor things can create problems, but these are the “big three.” Based on the simple engine we have been discussing, here is a quick rundown on how these problems affect your engine: Bad fuel mix – A bad fuel mix can…
1) Camshaft: Camshaft is a type of rotating device or apparatus used in piston engines for propelling or operating poppet valves. Camshaft comprises of series of cams that regulates the opening and closing of valves in the piston engines. The camshaft works with the help of a belt, chain and gears. 2) Crankshaft: Crankshaft is…
Torque is supplied from the engine, via the transmission, to a drive shaft (British term: ‘propeller shaft’, commonly and informally abbreviated to ‘prop-shaft’), which runs to the final drive unit that contains the differential. A spiral bevel pinion gear takes its drive from the end of the propeller shaft, and is encased within the housing of the final drive unit. This meshes with the…
The differential is found on all modern cars and trucks, and also in many all-wheel-drive (full-time four-wheel-drive) vehicles. These all-wheel-drive vehicles need a differential between each set of drive wheels, and they need one between the front and the back wheels as well, because the front wheels travel a different distance through a turn than the…
Advantages of Rear Wheel Drive- 1. Better handling in dry conditions – accelerating force is applied to the rear wheels, on which the down force increases, due to load transfer in acceleration, making the rear tires better able to take simultaneous acceleration and curving than the front tires. 2. More predictable steering in low traction conditions (ie: ice or gravel) because the steering…
Advantages of Front Wheel Drive- 1. Interior space: Since the powertrain is a single unit contained in the engine compartment of the vehicle, there is no need to devote interior space for a driveshaft tunnel or rear differential, increasing the volume available for passengers and cargo. 2. Cost: Fewer components overall 3. Weight: Fewer components mean lower weight 4. Fuel economy: Lower weight means…