Diesel Engines By: Douglas Aycock April 8, 2009. 2 History Named after Dr. Rudolf Diesel Originally replaced the stationary steam engine –75% efficient.

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Presentation transcript:

Diesel Engines By: Douglas Aycock April 8, 2009

2 History Named after Dr. Rudolf Diesel Originally replaced the stationary steam engine –75% efficient compared to10% by steam engine 1894 filed for a paten for his new invention By 1898 Diesel was a millionaire –Used to power anything from electrical and water plants to marine craft About 50 % of new cars in Europe are Diesel (2007) Diesel Engines, By: Douglas Aycock

3 How the Diesel Engine Works Diesel Engines, By: Douglas Aycock Four Stroke –Intake - air enters –Compression – compresses and heats air –Combustion – fuel combusts, and pushes piston down –Exhaust – pushes exhaust out

4 Differences Diesel Engines Compression Ignition Higher compression ratio –14:1 - 25:1 Can burn petroleum diesel, synthetic, and biodiesel Fuel ignites when mixed with air Gas Engines Spark plug ignited Lower compression ratio –Up to 14:1 (high performance) Can burn gasoline Fuel and air mixed then ignites Diesel Engines, By: Douglas Aycock

5 Advantages Over Gas Engines More torque and less RPM’s (revolutions per minute) Better fuel economy – 20% - 30% over gas Easier maintenance - no tune-ups Tougher engine components Last longer – average 350,000 miles (gas – 250,000) Higher energy density fuel –one gallon Diesel fuel = 147,000 BTU –One gallon Gasoline = 125,000 BTU Diesel Engines, By: Douglas Aycock

6 Applications Diesel Engines, By: Douglas Aycock

7 References stroke.gif&imgrefurl= ArfF9KrIRBCIaeZDkhroCzPmk=&h=412&w=325&sz=26&hl=en&start=1&um=1&tbnid=jPMiIyCBKY- m3M:&tbnh=125&tbnw=99&prev=/images%3Fq%3DDiesel%2BEngines%26hl%3Den%26safe%3Doff% 26client%3Dfirefox-a%26channel%3Ds%26rls%3Dorg.mozilla:en- US:official%26sa%3DN%26um%3D1Sample slide bullet one graphics/Diesel-model.jpg&imgrefurl= engine.html&usg=__EH4PSNVRM8w_jFT- 0ukVAXn_vW8=&h=300&w=400&sz=24&hl=en&start=3&um=1&tbnid=m8gNjACUXInLWM:&tbnh=93&tb nw=124&prev=/images%3Fq%3DDiesel%2BEngines%26hl%3Den%26safe%3Doff%26client%3Dfirefox- a%26channel%3Ds%26rls%3Dorg.mozilla:en-US:official%26sa%3DN%26um%3D1 stroke.gif&imgrefurl= ArfF9KrIRBCIaeZDkhroCzPmk=&h=412&w=325&sz=26&hl=en&start=1&um=1&tbnid=jPMiIyCBKY- m3M:&tbnh=125&tbnw=99&prev=/images%3Fq%3DDiesel%2BEngines%26hl%3Den%26safe%3Doff%26client %3Dfirefox-a%26channel%3Ds%26rls%3Dorg.mozilla:en-US:official%26sa%3DN%26um%3D1 Diesel Engines, By: Douglas Aycock