Proton smoking exhaust Wikipedia facts - electric motor
An electric motor uses electrical energy to produce mechanical energy, usually through the interaction of magnetic fields and current-carrying conductors. The reverse process, producing electrical energy from mechanical energy, is accomplished by a generator or dynamo. Traction motors used on vehicles often perform both tasks. Electric motors can be run as generators and vice versa, although this is not always practical. Electric motors are ubiquitous, being found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives. They may be powered by direct current (for example a battery powered portable device or motor vehicle), or by alternating current from a central electrical distribution grid. The smallest motors may be found in electric wristwatches. Medium-size motors of highly standardized dimensions and characteristics provide convenient mechanical power for industrial uses. The very largest electric motors are used for propulsion of large ships, and for such purposes as pipeline compressors, with ratings in the thousands of kilowatts. Electric motors may be classified by the source of electric power, by their internal construction, and by their application.
Źródło: https://en.wikipedia.org/wiki/Engine#Electric_motor
Why restored old cars attract the eye?
More and more people are interested in really ancient models of cars. There is no shortage connoisseurs of such cars among the real car fans, but also a person not associated in any way with passion about cars or other vehicles also willing to peek at these cars. The car after renovation will attract the eyes of everyone in the vicinity. There is no doubt that this is a very good way to stand out in the environment around us. Although often these cars are very expensive and driving them is quite uneconomical, you can also treat it as an investment. It is true that we have obtained through this investment a quick profit, but in the long term we really expect lots of money - if not for us, if only for our children and grandchildren.
Surfaces in contact and relative motion
Lubrication
Diagram of an engine using pressurized lubrication
Wikimedia Commons has media related to Internal combustion piston engine lubrication systems.
Surfaces in contact and relative motion to other surfaces require lubrication to reduce wear, noise and increase efficiency by reducing the power wasting in overcoming friction, or to make the mechanism work at all. At the very least, an engine requires lubrication in the following parts:
Between pistons and cylinders
Small bearings
Big end bearings
Main bearings
Valve gear (The following elements may not be present):
Tappets
Rocker arms
Pushrods
Timing chain or gears. Toothed belts do not require lubrication.
Źródło: https://en.wikipedia.org/wiki/Internal_combustion_engine