Engines
Automobile engines are basically internal combustion engines, which must achieve ignition in their cylinders to achieve combustion, which in turn is converted into mechanical energy by means of a power train. They are classified according to the type of fuel used—whether gasoline or diesel.
Space age engine - Corvette
The gasoline ignition process relies on a combination of a lead-acid battery and an ignition coil—the spark plug—to provide a high-voltage electrical spark to ignite the mixture of air and gasoline inside the cylinders. The ignition is timed to coincide with the optimal compression of the fuel-and-air mix by the piston head in the cylinder to 185 psi or even less. The result is a detonation or explosion inside the cylinder that becomes energy to press on and move the applicable parts to propel the vehicle at very high levels of efficiency and power-to-weight ratios. As the engine operates, it also generates electricity to recharge the ignition battery by means of an alternator.
Honda S2000 Engine
Gasoline engines can also run on natural gas, liquefied petroleum gas, ethanol, and bio diesel, a form of diesel fuel based on triglycerides produced from crops (such as soybean oil), without large-scale modifications. Some engines designed for gasoline fuel can be appropriately modified to run on hydrogen gas.
GA14 1.4L Gasoline Engine - Sentra
Diesel engines rely only on the compression of the air and fuel mixture inside the cylinders to produce energy. The levels of compression needed usually are about double those needed in gasoline engines. The heat produced will instantly ignite the fuel that is sprayed into the cylinder through a fuel injector just before peak compression.
one of two 6 cylinder 4-stroke diesel engine with 1,400 HP
Many modern refinements have been made to get more power from automobile engines. The most notable have been the use of turbochargers, intercoolers, high-octane fuel, dual exhausts, efficient fuel injection systems, and lightweight parts. Turbochargers pressurize the incoming air to cram more of the air-and-fuel mixture into the usual-size cylinder, resulting in a more powerful explosion. Because compressing air raises its temperature, intercoolers are used to lower the temperature of incoming air. The hotter the air is, the less it will expand when ignited; thus, the intercooler is added in the form of a special radiator that cools the compressed air before it enters the intake valve. High-octane fuels are specifically intended for this purpose because regular gasoline tends to ignite spontaneously when subjected to higher compression ratios. Dual exhausts, on the other hand, are designed to eliminate “back-pressure” and allow a smoother exit for gases by providing two exhaust pipes instead of one. Super-efficient electronically controlled fuel injection systems allow precise metering and thus improve performance and economy.
Chrome Engine
In addition to these advances, manufacturers are fiercely competing with one another to develop effective measures designed to result in cleaner emissions to combat air pollution and comply with global emissions regulations.
Leave a Comment
Recommended Sites | |