DICTIONARY OF AUTOMOTIVE TERMS - "Ou"


Ounce
See
Troy ounce
Ounce inches
An expression of the force exerted by a heavy spot (or counterbalance weight) on a tire. Multiply the weight times its distance from the axle center, i.e., 3 oz. x 7" = 21 ounce inches.
Outage
Space left in a product container to allow for expansion during the temperature changes it may undergo during shipment and application. Measurement of space that is NOT occupied in a drum.
Outboard
  1. Something away from the center of a vehicle.
  2. Away from the centerline and towards the side. Outside the hull
Outboard contre pente
Safety contour for tubeless passenger car wheel rims, featuring a Contre pente on the outer bead seat
Outboard flat hump
A safety contour for tubeless passenger car rims, featuring a flattened hump on the outer bead seat
Outboard flat pente
A safety contour for tubeless passenger car rims, featuring a flattened contre pente on the outer bead seat
Outboard motor
A boat motor which is attached to the rear of a small boat
Outboard round hump
A safety contour for tubeless passenger car rims, featuring a round hump on the outer bead seat
Outdoor temperature gauge
(otg) A gauge which indicates the ambient air temperature outside the vehicle
Outer bulb
See
Outer envelope
Outer cap nut
A securing device on a dual mounted disc wheel type where it threads directly on the Inner cap nut and holds the outer wheel in place against the hub.
Outer construction
The basic skin of a vehicle's body, i.e., those parts which are visible from the outside of the vehicle. In contrast to the Inner construction
Outer dead center
See
Bottom dead center
Outer diameter
(OD) The external diameter of a cylinder or tube
Outer electrode
  1. The outer terminal.
  2. The ground electrode
Outer envelope
The bulb of a gas discharge lamp which protects and supports the arc tube; either filled with gas or evacuated to avoid oxidation of the arc tube
Outer headlight
On a headlight system where there are four lights (two on each side), the outer headlights (low beam) are at the extreme outside (i.e., the furthest away from the center of the car). Also see Inner headlight
Outer race
Bearing Race

Bearing Race

The outer track or ring that provides a contact surface for the balls or Rollers in a bearing.

Outer sill
A ledge below the doors visible from the outside; often referred to as the sill, whereas the inner sill is actually the side member
Outer terminal
The electrode on the inside of the distributor cap, one outer terminal being assigned to each spark plug; the distributor rotor distributes the firing voltage from the central electrode to the outer terminals. The opposite is Center electrode
Outer tower
A socket on the distributor cap corresponding to the outer terminal, one per cylinder, to connect the spark plug leads
Outer wrap
Something that surrounds the converter shell of a catalytic converter and serves as a retainer and provides mechanical protection for the insulation
Outlast®
A fabric by Outlast Technologies that absorbs, stores and releases body heat, making this thermal layer critical technical equipment for all your cold weather adventures.

Outlet
  1. Synonymous with vehicle dealership.
  2. The Exhaust port of 4-stroke engine.
  3. The rear opening of a catalytic converter or muffler.
  4. The last pipe of an exhaust system (i.e., the tailpipe).

Also See
Air outlet
HT outlet
Outlet pipe
A pump discharge pipe
Outlet side
That side of the pump or pumping system on which the liquid pumped leaves the pump or system. The opposite is suction side
Outlet valve
  1. See Exhaust valve.
  2. See Discharge valve
Outline
To mold plastic material around something. Compare Insert
Out-Of-Pocket Cost
See
Total Out-Of-Pocket Cost
Out of round
  1. Something that is not completely circular. For instance a wire wheel may be true in that it does not wobble from side to side, but it may have a flat spot. A condition where engine cylinder bore has greater wear at one diameter than another
  2. The condition of brake drum when it has become distorted and is no longer perfectly round. In many cases an out of round brake drum can be salvaged by resurfacing on a brake lathe
Out of true
Something inaccurately made or incorrectly adjusted, e.g., of a wheel with side-to-side deviation or wobble
Out of tune
An engine which is not running ideally and needs a Tune up
Output
See
Gearbox output shaft
Pump power output
Output driver
A transistor in the output control area of the computer that is used to turn various actuators on and off
Output shaft
The shaft delivering power from within a mechanism. The shaft leaving the Transmission, attached to the Propeller shaft or Driveshaft, is the transmission output shaft.
Also See
Gearbox output shaft
Transmission output shaft
Output speed
The speed of the transmission output shaft which is transmitted to the driven wheels via the final drive; as the final drive provides a constant gear ratio, output speed is proportional to vehicle road speed
Output voltage
The fundamental rms (root mean square) voltage between the output terminals.
Out-rigger
  1. A device with retractable mechanical legs used to stabilize equipment such as cranes, ditch diggers, etc., while working.
  2. A short angle or box section member that runs across part of the car. On cars with separate frames, outriggers are used to link the main chassis or the longitudinal members with the sill or running board area. An outrigger is far shorter and often of a smaller section than a crossmember
Outrigger
  1. A device with retractable mechanical legs used to stabilize equipment such as cranes, ditch diggers, etc., while working.
  2. A short angle or box section member that runs across part of the car. On cars with separate frames, outriggers are used to link the main chassis or the longitudinal members with the sill or running board area. An outrigger is far shorter and often of a smaller section than a crossmember
Outside caliper
A machinists' caliper used to check outside dimensions. See Caliper.
Outside calipers
See
Caliper.
Outside corner weld
Fusing two pieces of metal together, with the fusion taking place on the underpart of the seam.
Outside diameter
The external diameter of a cylinder or tube
Outside spring caliper
An Outside caliper with a spring for accurate setting
Outside temperature gauge
(otg) A gauge which indicates the ambient air temperature outside the vehicle