We need to know a little about torque, traction and wheel slip before we can understand the different four-wheel-drive systems found on cars.
Torque
Torque is the twisting force that the engine produces. The torque from the engine is what moves your car. The various gears in the transmission and differential multiply the torque and split it [...]
The sending unit is located in the fuel tank of the car. It consists of a float, usually made of foam, connected to a thin, metal rod. The end of the rod is mounted to a variable resistor. A resistor is an electrical device that resists the flow of electricity. The more resistance there is, [...]
The main parts of any four-wheel-drive system are the two differentials (front and rear) and the transfer case. In addition, part-time systems have locking hubs, and both types of systems may have advanced electronics that help them make even better use of the available traction.
Differentials
A car has two differentials, one located between the two front [...]
Gears are used in several mechanical devices. They do many important jobs, but one of their most crucial functions is that they provide a gear reduction in motorized equipment.
This is key because, often, a small motor spinning very fast can provide enough power for a device, but not enough torque. Another thing gears do is [...]
There are almost as many different types of four-wheel-drive systems as there are four-wheel-drive vehicles. It seems that every manufacturer has several different schemes for providing power to all of the wheels. The language used by the different carmakers can sometimes be a little confusing, so before we get to understanding how they work, here [...]
Since the power-steering pump on most cars today runs constantly, pumping fluid all the time, it wastes horsepower. This wasted power translates into wasted fuel. We can expect to see several innovations that will improve fuel economy:
Variable Displacement Power Steering Pump
Some cars already utilize this pump. It reduces the volume of fluid being pumped [...]
An engine has a number of systems that help it do its job of converting fuel into motion. Most of these subsystems can be implemented using different technologies, and better technologies can improve the performance of the engine. Here’s a look at the different subsystems used in modern engines
Valve Train
The valve train consists of the [...]
To understand the basic idea behind how a reciprocating internal combustion engine works, it is helpful to have a good mental image of how “internal combustion” works. One good example is an old war cannon. You have probably seen these in movies, where the soldiers load the cannon with gun powder and a cannon ball [...]
Have you ever opened the hood of your car and wondered what was going on inside?
A car engine can look like a big confusing jumble of metal, tubes and wires to the uninitiated. You might want to know what’s going on in there simply out of curiosity. After all, you ride in your car every [...]
The main job of the fuse is to protect the wiring. Fuses should be sized and located to protect the wire they are connected to. If a device like your car radio suddenly draws enough current to blow the fuse, the radio is probably already blown. The fuse is there to protect the wire, which [...]
| 1 | you drive your vehicle day & night? |
| 2 | burn fuel and spoil money. |
| 3 | lets write something on your bike or car. |
| 4 | at least you can  Spoiling money. |
| 5 | just now! |