| Diesel engine principles are pretty
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| | allows compression to take place, the
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| straight forward for the experienced
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| | HEAT OF COMPRESSION is reached when the
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| mechanic but what about regular everyday
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| | piston reaches the top of the cylinder,
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| people who have never taken the time to
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| | the diesel fuel is then injected into the
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| find out more about a diesel engine and
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| | cylinder at the precise time.
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| how it works?
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| | 3} POWER STROKE:
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| I am going to explain in layman's terms
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| | After injection takes place an explosion
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| the basic principles of a diesel engine.
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| | occurs in the cylinder because of the
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| WHAT'S THE DIFFERENCE BETWEEN A GASOLINE
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| | combination of heat and atomized diesel
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| ENGINE AND A DIESEL ENGINE?...a quick
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| | fuel. This causes the piston to be forced
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| overview.
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| | downward which produces torque and the
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| The first thing you should know is a
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| | horsepower required from a typical diesel
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| gasoline engine and a diesel engine are
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| | engine.
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| totally different. A gasoline engine is
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| | 4} EXHAUST STROKE:
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| constructed much lighter than the heavier
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| | After the power stroke the piston moves
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| built diesel engine and runs on an air
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| | upward once again while the exhaust
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| fuel mixture combined with a high energy
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| | valves open allowing the previously
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| spark that is timed to ignite the air
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| | ignited gases to escape to the atmosphere
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| fuel mixture inside each engine cylinder
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| | out the exhaust system.
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| at the precise time creating power and
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| | As mentioned before each cylinder goes
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| torque [turning force] which drives your
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| | through this exact sequence over and over
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| vehicle.
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| | in a set firing order. For instance, a 6
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| A diesel engine uses high compression
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| | cylinder diesel engine has a firing order
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| [intake air that is compressed /
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| | 1- 5- 3- 6- 2- 4 This is the order that
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| squished] into a very small space inside
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| | each cylinder goes by, following the 4
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| each cylinder causing extreme heat! This
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| | strokes mentioned above. This sequence
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| is called 'Heat Of Compression' which
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| | has been engineered to allow the diesel
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| ignites a very fine high pressure mist of
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| | engine to run smoothly with no imbalance.
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| diesel fuel that is injected into the
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| | DIESEL ENGINE TRIVIA: Today's high
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| cylinder at the exact time.
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| | performance diesel engines.
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| So you now know that a gasoline engine
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| | Fuel passes through the injector at
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| needs a high energy spark to run while a
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| | speeds of nearly 1500 miles per hour - as
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| diesel uses 'Heat Of Compression'
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| | fast as a jet plane at top speed.
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| THE FOUR STROKE PRINCIPLE
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| | Fuel is injected into the combustion
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| Every engine today runs on FOUR STROKES
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| | chamber in less than 1.5 milliseconds,
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| or FOUR CYCLES- both these terms mean the
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| | the same time it takes for a camera flash
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| same. Here is how the four stroke diesel
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| | to go off.
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| engine operates.
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| | The minimum amount of fuel injected into
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| The four strokes are:
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| | a diesel engine is one cubic millimetre -
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| INTAKE-COMPRESSION-POWER-EXHAUST. The
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| | about the same volume as the head of a
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| pistons, valves and injectors work
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| | pin.
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| together in each cylinder in a set
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| | Volkswagen has developed a 1 litre diesel
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| sequence over and over.
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| | powered car that got 100 kilometres out
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| 1} INTAKE STROKE:
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| | of .89 litres of fuel {60 miles on
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| Intake valves in the cylinder head open
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| | approxiamately 3/4 of a quart of fuel!}
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| allowing pressurized air to enter each
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| | There is much to learn about diesel
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| cylinder while the piston is travelling
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| | engines and a ton of information online.
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| downward.{the pressurized air supply is
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| | If you have ever considered buying a
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| made possible by the TURBOCHARGER which
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| | vehicle with a diesel engine you have my
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| pushes air into the intake system giving
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| | blessing! The extra cost will be to your
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| the diesel engine a boost of air to keep
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| | benefit, so I recommend finding out more
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| up with instantaneous injection of fuel}
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| | about diesel engines before you decide
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| 2} COMPRESSION STROKE:
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| | which one to choose..
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| When the piston starts to make it's way
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| | I hope you have found this information on
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| back upward the valves close which traps
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| | diesel engines helpful!
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| the intake air in the cylinder which
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|
