A mark on the output (live) terminal on a generator (contrasts with
"F")
Dab
A bicycle maneuver in which the rider puts a foot down in order to catch his
balance on a difficult section of trail as in, "You will be disqualified if you
dab on this course."
DAB
Acronym for "Digital Audio Broadcast."
Dagmar
Large bullet-shaped protrusion on
bumpers of cars in the 1950s. It was named
after the nickname of a buxom television star, Virginia Ruth Egnor (1921-2001).
Dagmar is an automobile of which only the 25-70 models of 1925-1948
are classic cars.
Daimler
Also called Austro-Daimler. A vehicle brand
of which the 1925-1948 models with required application are
classic cars. The 1949-53 DE-36 Custom Built
models are milestone cars. The 1949-53 2.5
Special Sport Convertible models are milestone
cars.
Dalton's law
Vapor pressure created in a container by a mixture of gases is equal to sum of
individual vapor pressures of the gases contained in mixture.
To reduce the oscillations of spring, carburetor piston, etc.
To reduce the vibration in a crankshaft
Dampening belt
A rubber belt wound around the outside of a brake drum or rotor prior to
machining the drum or rotor. The belt dampens out vibrations that might
affect the quality of the finished surface.
Damper
A friction device sometimes called a
"shock absorber." Used for controlling and
damping spring oscillations. The springs
actually absorb road shocks; the dampers convert the energy imparted to the
springs into thermal energy (by friction), which is dissipated to the atmosphere
or the vehicle's chassis. Dampers are
distinguishable by the type of friction involved, mechanical or
hydraulic but most modern cars used
tubular-shaped hydraulic shock absorbers. Because
they affect up and down wheel motions, dampers are an important link in tuning a
vehicle's ride and handling.
A movable plate which permits or restricts the flow of liquids or
gasses.
A piston in a cylinder whose movement is restricted by a liquid or gas, which
thus also restricts the movement of another member to which it is connected.
Springs in a clutch plate providing a cushion against sudden loads due to abrupt
engagement
Damper strut
A suspension strut whose hub carrier is attached to the spring element rather
than to the damper tube. Compare Macpherson
strut
Damping
Cushioning of force.
The action of suspension to control the speed of movement through its
travel, usually by a piston running through oil and thus gives a smoother ride.
It vastly improves that smoothness of ride offered.
A structural panel with bracing across the width of the car on the
inside of the bulkhead below the windshield that provides the mounting
locations of the dashboard.
A model of automobile manufactured by Nissan Click image for books on Datsun
Datsun Truck
A model of truck manufactured by Nissan Click image for books on Datsun Trucks
Datsun Z
A model of automobile manufactured by Nissan Click image for books on Datsun Z
Davit
A crane arm for handling lifeboats, stores, etc.
Day-night mirror
A mirror which adjusts to prevent the glare from the headlights of following
cars. The British term is "dipping mirror."
Days' supply
Number of days needed to sell all vehicles in inventory, based on the previous
month's sales rate.
Daytime running lights (DRLs)
A safety-oriented lighting system in which the headlights or other front lights
are constantly on even during the day. They help to prevent possible accidents
because oncoming traffic can be seen. December 1, 1989, Canada became the second
country after Norway to require daytime running lights on all new passenger
vehicles. In other countries the implementation of DRLs has had mixed response.
Dazzle
The glare from the headlights of oncoming traffic which can momentarily blind a
driver.