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D |
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Differential
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A
gear assembly that permits either
side of an axle, or two separate
driveshafts, to rotate at different
speeds, which allows different
wheels to rotate at different
speeds as the vehicle turns |
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Direct
Fuel Injection |
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A
fuel-supply system that has taken
the carburetor's place, increasing
vehicle reliability, efficiency
and emissions performance |
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Disc
Brake |
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A
brake system that slows a wheel's
rotation by squeezing an attached
metal disc in a vicelike hydraulic
caliper |
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Displacement
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The
volume of an engine's cylinders,
a general indicator of its size
and power |
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Double-Wishbone
Suspension |
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A
suspension design borrowed from
Formula One racecars that uses
two wishbone-shaped, hinged control
arms to guide each wheel's up-and-down
motion |
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Drag
Coefficient |
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A
measure of a vehicle's resistance
to the air through which it passes
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Driveline
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The
parts of the drivetrain excluding
the engine and transmission |
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Drivetrain
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All
components that generate power
and propel a vehicle |
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Drum
Brake |
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A
brake system that slows a wheel's
rotation by pressing curved brake
shoes against the inside of an
attached metal drum |
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Dualie
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A
pickup truck with dual wheels
on each side of its rear axle
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Dynamic
Stability Control / Dynamic Stability
Traction Control |
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An
antilock braking system that uses
computer control to keep a vehicle
on the intended course |
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