Fast Cars and a Clean Environment Essay

3889 Words 16 Pages
Fast Cars and a Clean Environment

Many people would love the idea of having the fastest car ever or just having a speedy and sleek sports car to drive around for that matter. The idea of being able to “flex” the power of your car every time the light turns green make people long for a high-speed car. Many automakers are making faster and faster or cars with more horsepower for this demand. For instance, BMW’s E36 (1996- 1999) M3 models peaked at an amazing 234 horsepower and 226 pounds per feet of torque, but this wasn’t enough for many BMW enthusiasts. So in 2001 BMW came out with its E46 M3 model that housed an astonishing 333 horsepower and 270 pounds per feet of torque engine, which is an increase of almost 100 horsepower from the
…show more content…
Yet all the fast cars our there pollute and destroy the environment.

Types of Engines: Internal Combustion Engines (4-stroke piston combustion)

Most, if not all cars on the road today, are powered by some variation of a four stroke internal combustion engine. Invented by Nikolaus Otto in 1867, a four stroke internal combustion engine powers a car by first taking in oxygen from the external air and mixing it with a small drop of gasoline into a small chamber(2). A piston also located inside that chamber takes the gas and air mixture and compresses it to form a more powerful reaction and is ignited by a spark plug. The energy from the explosion of the gasoline and air pushes the piston downwards and turns the cam which ultimately rotates the wheels. After the explosion, the combusted air is released into the exhaust pipe which then goes to the outside air. The engine is then ready to restart the whole cycle again: taking in new air, compressing it, combusting it and releasing the combusted air into the exhaust pipe. This process is basically repeated over and over to keep the wheels spinning and the car moving.

Although internal combustion engines are what powers most cars on the road today, its efficiency is very low. An average combustion engine today is only able to convert 20% of the thermal energy content of gasoline into doing mechanical work (3). Most of the energy is lost to heat which
Open Document