Automotive Diesel Engine

Automotive Diesel Engine - Michigan State University...

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THE AUTOMOTIVE DIESEL ENGINE THE AUTOMOTIVE DIESEL ENGINE Roger B. Krieger Powertrain Systems Research Laboratory GM R&D CENTER (Retired) Adjunct Professor Engine Research Center University of Wisconsin Michigan State University Michigan State University College of Engineering College of Engineering Fall 2011 - ME 444 Roger Krieger
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Lecture Outline Lecture Outline Overview Combustion systems Fuel injection systems Fuel characteristics Performance issues Emissions control Summary & future trends Roger Krieger
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The Diesel Engine The Diesel Engine “.... an internal combustion engine in which air is compressed to a temperature sufficiently high to ignite fuel injected into the cylinder where the combustion actuates a piston.” Webster’s Dictionary Roger Krieger
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Diesel Combustion Diesel Combustion Fuel sprayed in cylinder near TDC Atomization, vaporization & mixing delay ignition Ignition occurs wherever conditions right Combustion rate controlled by injection characteristics (injection rate, spray angle, injection pressure, nozzle size and shape), chamber shape, mixture motion, & turbulence Glow plug may be used to aid cold starting Power output controlled only by amount of fuel injected Roger Krieger
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Roger Krieger
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Roger Krieger
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Roger Krieger
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Roger Krieger Lecture Outline Lecture Outline Overview Combustion systems Fuel injection systems Fuel characteristics Performance issues Emissions control Summary & future trends
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Typical DI Chambers Typical DI Chambers Heavy duty - 4-valve, central injector, low swirl, wide shallow bowl Light duty - 4-valves, central vertical injector, high swirl, deep narrow bowl Spray Outline Roger Krieger
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Overview Combustion systems Fuel injection systems Fuel characteristics Performance issues Pressure-volume comparisons Emissions control Summary & future trends Lecture Outline Lecture Outline Roger Krieger
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This note was uploaded on 01/29/2012 for the course ME 444 taught by Professor Staff during the Fall '08 term at Michigan State University.

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Automotive Diesel Engine - Michigan State University...

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