NEED

THE OTTO CYCLE

OBJECTIVE

• To have a basic understanding of how the internal combustion engine works
• Know and understand internal engine parts
• To have a basic understanding of spark ignition and compression ignition

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SUCK

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SQUEEZE

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BANG

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BLOW

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THE FACTS

• The first working four-stroke engine was built by German engineer Nicolaus Otto in 1876.
• This is why the four-stroke principle today is commonly known as the Otto cycle
• A four-stroke engine is an internal combustion engine in which the piston completes four separate strokes
• A similar engine was built in 1893 by Rudolph Diesel, also of Germany.
• Diesel created his engine to improve efficiency compared with the Otto engine.

SPARK IGNITION

COMPRESSION IGNITION

CONCLUSION

QUESTIONS