Glossary 173
Soot
Carbonaceous particulate matter, black in color, found in diesel exhaust. Soot
particles are extremely fine. Captured by the diesel particulate filter, their chemical
characteristics are changed by the heat to which they are exposed, turning the soot
into ash.
Variable Geometry Turbocharger (VGT)
Turbo turbine housing has moving components to control flow of exhaust gas and
build back pressure in the exhaust system for EGR flow. The VGT also performs
as an engine brake.
VGT Wheel Speed
A sensor mounted in the turbo bearing housing that detects turbine and compressor
wheel speed and relays this data to the EECU.
Vehicle Electronic Control Unit (VECU)
A microprocessor-based controller, sometimes referred to as a module, mounted in the
cab, inside the passenger-side dash panel. The VECU controls engine speed, cruise
control, accessory relay controls, idle shutdown and trip recorder functions.
Summary of Contents for EPA2007 D13F
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Page 35: ...SPECIFICATIONS 29 Bearing Cap Camshaft Rocker Arm Shaft T2022796 ...
Page 101: ...ENGINE COMPONENT AND LOCATION 95 Fuel System W2033327 ...
Page 134: ...128 ENGINE COMPONENT AND LOCATION Rear Engine Components W2032470 ...
Page 136: ...130 ENGINE COMPONENT AND LOCATION Oil Pan and Stiffing Frame W2032451 ...
Page 138: ...132 ENGINE COMPONENT AND LOCATION Lower Engine Components W2032471 ...
Page 140: ...134 ENGINE COMPONENT AND LOCATION Replacement Kits Engine Replacement Kits W2032452 ...