- SW
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- Abbreviation for station wagon.
- An abbreviation for switch which is found on the coil terminal connected to the ignition switch
- Swage
- To shape metal by hammering or pressure with the aid of a form or anvil called a 'swage block'
- Swaged
- A method of locking a part in place by permanently deforming a portion of it or the surrounding material.
- Swage line
- A narrow profiled line in outer body panels, e.g., above the upper edge of the wheel cutouts, that helps to enhance the flowing lines of the bodywork
- Swan neck
- The course followed by a vehicle when the driver passes the correct point for taking a right turn and needs to make a bigger effort to correct the position when completing the turn
- Swansea
- The location for the British Driver and Vehicle Licensing Agency. Sometimes Swansea is a substitute for this agency.
- Swash bulkhead
- Longitudinal or transverse nonwatertight bulkheads fitted in a tank to decrease the swashing action of the liquid contents as a ship rolls and pitches at sea
- Swash plate
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- A plate serving the purpose of a Swash bulkhead, but not extending to the bottom of the tank.
- A rotating disc or face plate on a shaft that is inclined at an oblique angle to the axis of rotation and either imparts reciprocating motion to push rods or plungers parallel to the shaft axis, as in a swash plate pump or, conversely, converts reciprocating motion to rotation (replacing the crankshaft), as in a swash plate motor
- Swash plate-wobble plate
- Device used to change rotary motion to reciprocating motion. Used in some refrigeration compressors.
- Sway bar
- A round bar which connects the left wheel suspension assembly with the right side. It may be found at the front and/or rear. Its main function is to keep both wheels rolling at the same rate when meeting bumps; but it also affects handling. A front anti-roll bar increases understeer and a rear bar increases oversteer. See
- Sweating
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- Joining two pieces of metal together by placing Solder between them and then clamping them tightly together while heat, sufficient to melt the solder, is applied. Method of soldering in which the parts to be joined are first coated with a thin layer of solder.
- Condensation of moisture from air on cold surface.
- Sweeper
- A type of seal used along moving surfaces, e.g., door windows, that is often provided with a lip to ensure sealing.
- Sweeping leaves
- Trucker slang for Bringing up the rear as in 'Who's that sweeping leaves behind me?'
- Sweet gas
- Natural gas that no longer contains hydrogen sulfide (H2S). Contrast Sour gas
- Swelling
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- A paint fault condition that occurs when an excessively rapid thinner is used in a paint and the soft paint sinks into cuts.
- An increase of volume conditioned by the absorption of liquids, vapors or gases in the coating film of plastics.
- Sweptside
- Dodge's term for a pickup truck style in which the side of the bed blends smoothly with the doors and fenders
- Swept volume
- That part of the cylinder capacity that is swept by the pistons on their up and down strokes (i.e., the volume through which a piston moves in one stroke) formed by the bore diameter and the piston stroke. Also called displacement volume. See
- Swingarm
- A motorcycle or bicycle suspension member pivoted at one end and supporting the wheel at the other. In most cases the swingarm is more accurately described as a pivoted fork, as the wheel is supported on both sides. It works in conjunction with the shock absorbers to absorb the impact of bumps in the road. It attaches the rear wheel to the frame of the bike with a single pivot point. It connects to the frame near the rear of the motorcycle engine.
- Swing arm suspension
- An independent suspension system in which each axle pivots near the center of the vehicle and the movement of the axle changes the angle of camber. Also called Swing axle
- Swing axle
- An Independent rear suspension system in which each driving wheel can move up or down independently of the other. The differential unit is bolted to the frame and various forms of linkage are used upon which to mount the wheels. Drive axles, using one or more Universal joints, connect the differential to the drive wheels. When cornering hard, cars with swing axles are prone to wheel jacking which can lead to large positive Camber at the outside rear wheel and can induce sudden oversteer.
- Swinging caliper
- A type of floating caliper with wedge-shaped disc pads (only one of which is activated by hydraulic pressure from the piston, the other being fixed), which can pivot on its hinge pin to equalize the pressure on both pads
- Swirl
- A rotary or swirling motion given to the charge mixture as it enters a cylinder by offsetting the inlet tract
- Swirl chamber
- A small chamber or cavity in the cylinder head to promote swirl in the indirect injection combustion system of a diesel engine
- Swirl Combustion
- A combustion chamber configuration which uses curved mixing ridges in the intake ports and/or a re-entrant piston bowl (a bowl whose top edges curve inward). Some swirl combustion chambers have a larger rim around the outside of the piston and a more compact combustion chamber or bowl. The swirl is used to reduce particulate emissions.
- Swirl marks
- A circular pattern produced by an orbital sander on a paint surface; it must be hand-sanded with a sandpaper of finer grit, otherwise it will remain visible through the respray coat
- Switch
- A device that opens and closes an electric circuit. See
- Actuating switch
- All-insulated Switch
- Ambient Switch
- Ambient temperature switch
- Antenna Changeover Switch
- Authority Limit Switch
- Auxiliary Switch
- Battery master switch
- Battery Regulating Switch
- Brake Light Switch
- Branch Switch
- Bus-coupler Switch
- Chain Switch
- Cut-off Switch
- Deceleration Switch
- Differential Switch
- Dimmer switch
- Dipper switch
- Door pillar switch
- Flasher Switch
- Fuel cut-off switch
- Fuel pump shut-off switch
- Fuel pump switch
- Glow plug starter switch
- Hall-effect switch
- Hall vane switch
- Hamlin switch
- Hazard flasher switch
- Hazard warning switch
- Headlight dimmer switch
- Headlight Dipper Switch
- Horn switch
- Icing Switch
- Idle Tracking Switch
- Ignition switch
- InertiaFuel Cut-off Switch
- Inhibitor Switch
- Interior light switch
- Jamb switch
- Kickdown switch
- Kill switch
- Lateral Acceleration Switch
- Lean Authority Limit Switch
- Light Switch
- Limit Switch
- Lock-out Switch
- Low-pressure Cut-out Switch
- Manifold Vacuum Zone Switch
- Master Switch
- Mercury switch
- Neutral Drive Switch
- Neutral safety switch
- Oil pressure switch
- Oil Thermal Vacuum Switch
- Park safety switch
- Pillar Switch
- Plug Starter Switch
- Ported Vacuum Switch
- Power cut-off switch
- Power window lock-out switch
- Pressure differential switch
- Pressure Sensing Switch
- Pressure Switch
- Pump Shut-off Switch
- Pump Switch
- Quick-break Switch
- Quick Make-and-break Switch
- Remote starter switch
- Safety Switch
- Shut-off Switch
- Single-pole Double-throw Switch
- Single-pole Single-throw Switch
- Snow chain switch
- Solenoid starter switch
- Starter inhibitor switch
- Starter Switch
- Starting switch
- Stoplight Switch
- Superheat Switch
- Temperature Switch
- Temperature Vacuum Switch
- Tether kill switch
- Thermal Switch
- Thermal vacuum switch
- Thermo-time switch
- Thermostatic Switch
- Thermostatic Vacuum Switch
- Throttle Valve Switch
- Toggle switch
- Vacuum control switch
- Vacuum Switch
- Valet switch
- Valve Switch
- Vane Switch
- Warning Switch
- Wash wipe Switch
- Wash/wipe switch
- Wide Open Throttle Switch
- Window Lock-out Switch
- Switching transistor
- Used in some electronic ignition system, it acts as a switch for high current in response to a low voltage signal applied to the base terminal
- Swivel caster
- Small wheel assembly found on the front of a shopping cart or the front of a wheelchair. The stem or fork is set at an angle and is allowed to pivot.
Wheelchair caster