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Internal Combustion Engine
Transcript of Internal Combustion Engine
of the Internal Combustion
Engine outweigh the negatives? Aims Give an insight into how the internal
combustion engine works.
Explain the advantages of the internal
Explain the disadvantages of the
internal combustion engine.
Summarize my ideas and come to a conclusion. Jean Joseph Etienne Lenoir
was the man who created the first
commercially successful design of the
internal combustion engine in 1858. There are many different types of internal combustion engine, main 6 are: 4 stroke, 2 stroke, 6 stroke, diesel, jet engine and gas turbine. 4 stroke engines are mainly used commercially and as the name suggest consists of 4 process'. Advantages Efficiency
The internal combustion engine
is able to create a much greater
amount of power than any steam
engine, due to it's high compression
ratio. Large number of
pistons allows for a
high compression ratio Safety
Casing is made from cast iron,
high pressures and temperatures kept
inside casing. Much safer than using
a steam engine, steam engines had a chance
of exploding. Disadvantages Air pollution Sulphur dioxide which leads to formation
of acid rain in the atmosphere. Carbon monoxide adheres to haemoglobin in red blood
cells to form carboxyhaemoglobin, meaning they can no longer carry oxygen. Oxides of nitrogen are also formed, mainly in the form of nitrogen dioxide and nitrogen oxide (shown above). These gases cause respiratory problems. NO is also a greenhouse gas and is also formed via the zeldovich mechanism. Other particulates formed consist of lead (Pb),
unburnt hydrocarbons and carbon soot.
Carbon soot is carcinogenic, formed by incomplete
Lead impurities in fuel can act as an endocrine
disruptor. (inhibits hormone action in mammals)
Leading to cancer and birth defects.
Unburned hydrocarbons are also carcinogenic and
react with NO's, 02 and H20 to form ozone which
acts as a greenhouse gas. The catalytic converter is an external addition
to the internal combustion engine which helps
to get rid of these poisonous gases. The gases produced from the catalytic converter may
be safer that the gases that went in, but they cause long term damage. Water vapour and carbon dioxide are greenhouse gases and are larger contributors to global warming. The main fuel source for power in the internal combustion engine is either gasoline or diesel depending on the type of engine.
These both come from the fractional distillation of crude oil, a non renewable source.
The reserves of crude oil will eventually run out, so new fuel sources are needing to be developed. Hydrogen Fuel
Can be produced in a number of different ways. Pound for pound better energy source than gasoline or diesel. Biofuel
Available in large quantities, renewable
energy source, saves environment. Alcohol fuels
Renewable, production of ethanol (main fuel)
is almost carbon neutral. High levels of resources
left. Motor sport
The use of the internal combustion engine in
motor sport has been around for just over 120 years.
The high compression ratio of the engine means a
huge power output. High speeds are achieved,
opening the door to competition. Death of Aytron Senna 1st May 1994 So to conclude...