- TI
- Acronym for Transistorized ignition
- TI-B
- Acronym for Breaker-triggered transistorized ignition
- TIC
- Acronym for Thermal ignition control
- Tickler
- A carburetor starting aid. When starting at low temperatures, the float may be pushed below the fuel level in the float chamber by depressing the tickler, so that more fuel is supplied than is required for normal operation
- Tick over
-
- To run at low speed with the throttle control closed and the transmission disengaged.
- To idle
- Tie-down system
- Equipment which secures someone who uses a wheelchair to the floor of the van or bus. There are many kinds of devices used including brackets, straps, wheel locks, and belts.
- Tie rod
-
- Any connecting red or bar, usually under tension.
- A rod, or rods, connecting the Steering arms together. It links the Pitman arm and the Idler arm to the Steering knuckle arms. When the tie rod is moved, the wheels pivot.
- Tie rod ends
- A type of Ball joint which transfers the movements of the Steering wheel to the wheels. Grease fittings or Ball joints located on the ends of the Steering linkage.
- Tier 1 Supplier
- Manufacturer to the vehicle assemblers who are responsible for delivery of the finished assembly, product development and continued technology renewal.
- Tier 3 Supplier
- Supplier of engineered materials and special services, such as rolls of sheet steel, bars and heat treating, surface treatments.
- Tight
-
- A handling condition in which the car's front end wants to go straight when the wheel is turned. Also called understeer or push.
- A description of a vehicle indicating its ability to easily negotiate curves at high speed.
Also see
- TI-H
- Acronym for Transistorized ignition with hall generator
- TI-I
- Acronym for Transistorized ignition with inductive pick-up
- Tijuana taxi
- Trucker slang for Well marked police car as in "There's a tijuana taxi about a mile ahead.".
- Tilt
-
- Abbreviation for Tilt steering wheel.
- A cab which tilts up for maintenance. It does not mean the vehicle is necessarily a COE. The engine cowls of some conventional power units tilt although the entire cab does not.
- Tilt/slide sunroof
- A sunroof, made of steel or glass, that slides and tilts and is operated either manually or electrically
- Tilt steering wheel
- (tilt) A Steering wheel which moves up or down or which can be set at a different angle. In this way, the driver can find the most comfortable position and also allows easier entry and exit from the vehicle.
- Time
-
See
- Active braking time
- Block Time
- Brake Snubbing Time
- Brake Stopping Time
- Brake System Actuation Time
- Break time
- Cure time
- Curing time
- Driver Reaction Time
- Drying Time
- Elapsed time
- Flash time
- Glow time
- Jumped Time
- Lockout Ignition Time
- Maximum Ignition Time
- Minimum Ignition Time
- Pulse Time
- Purge Time
- Quench Time
- Running Time
- Setting Time
- Soaking time
- Straight time
- Time delay relay
- A relay which responds to a signal with a certain delay. In some ignition systems, a time delay relay allows for full vacuum advance 20-30 seconds after start-up, after which control is again taken up by the TCS; some cars have an additional time delay relay which delays vacuum advance about 30 seconds after the transmission has been shifted to high gear
- Timer
- Clock-operated mechanism used to control opening and closing of an electrical circuit.
Also see
- Timer-thermostat
- Thermostat control which includes a clock mechanism. Unit automatically controls room temperature and changes temperature range depending on time of day.
- Time Trial
- (TT) A competition where a vehicle seeks to cover a certain distance in the best time possible. In most cases the vehicle proceeds solo (i.e., other vehicles are not on the track at the same time)
- Timing
-
- The capability of the valves, ignition system, and other engine-driven parts of a vehicle to work together for maximum efficiency.
- One of the essential factors in an Internal combustion engine (Fuel, Air, Proper proportion of mixture, Compression Timing, Spark). When the Piston is in the Compression stroke both valves must be closed. If one or more is open, the Valve timing is out. Perhaps a Timing belt or Timing chain has jumped a tooth. If the spark does not arrive at the correct moment, the engine is out of time. If this Ignition timing is only slightly off, the engine may run with less Efficiency. Ignition timing is regulated by checking it with a timing light and then adjusting the distributor.
Also see- Basic ignition setting
- Basic ignition timing
- Basic timing
- Camshaft Timing
- Dynamic ignition timing
- Electronic spark timing
- Engine timing
- Exhaust timing
- Ignition timing
- Mechanical ignition timing
- Port Timing
- Reed valve induction timing
- Static ignition timing
- Static timing
- Valve timing
- Variable valve timing
- Timing belt
- A toothed belt driven by the Crankshaft and operates the Camshaft. It causes the valves to open and close at the proper time. When an engine is rebuilt, it is important to line up the Crankshaft Sprocket with the Camshaft sprocket before applying the belt. When the belt breaks, often a valve will remain open and be hit by the rising Piston causing the valve to bend and other internal damage.
Also see
- Timing belt pulley
- A spring-loaded jockey pulley or idler pulley designed to take up the slack in the timing belt
- Timing belt tensioner
- A spring-loaded jockey pulley or idler pulley designed to take up the slack in the timing belt
- Timing chain
- A drive chain driven by the Crankshaft and operates the Camshaft. It causes the valves to open and close at the proper time. When an engine is rebuilt, it is important to line up the CrankshaftSprocketCamshaft sprocket before applying the chain. When the chain often a valve will remain open and be hit by the rising Piston causing the valve to bend and other internal damage. In OHC engines, it is called a camchain chain or cam chain
Also see
- Timing diagram
- A diagrammatic representation of the engine timing, i.e., the times during which the intake and exhaust valves are open and closed
- Timing gear
- Both the gear attached to the Camshaft and the gear on the Crankshaft. They provide a means of driving the Camshaft. This system is used where long life and hard service are expected as in commercial vehicles and race cars. Using gears is generally a noisier method than using a Timing chain or a Cog belt to drive the Camshaft.
- Timing light
- A stroboscopic unit that is connected to the secondary circuit to produce flashes of light in unison with the firing of a specific Spark plug. By directing these flashes of light on the whirling Timing marks the marks appear to stand still. By adjusting the Distributor the timing marks may be properly aligned, thus setting the Timing. xenon timing lights have the advantage over neon lights because they are more visible in daylight.
- Timing marks
-
- Marks or notches, usually located on the Vibration damper used to Synchronize the Ignition system so that the plugs will fire at the precise time.
- One tooth on either the Camshaft or Crankshaft gear will be marked with an indentation or some other mark. Another mark will be found on the other gear between two of the teeth. The two gears must be meshed so that the marked tooth meshes with the marked spot on the other gear.
- Timing rotor
- A rotating part of the pick-up assembly, in the form of a drum with ferrite rods embedded vertically in the outer edge, used instead of a trigger wheel
- Timing valve
- In Bosch CIS, a device that regulates pressure in the lower chamber of the differential-pressure valve, in response to a signal from the lambda (oxygen) sensor. Also called Lambda valve (Bosch's term) or a Frequency valve
- Timken® bearing
- A type of tapered roller bearing
- Timken® roller bearing
- A type of tapered roller bearing
- Tin
- A malleable and ductile metal which increases strength, hardness, and corrosion resistance against salt water when added to brass alloys.
- Tinners Rivet
- A small rivet having a head of the same form as a flat head rivet but larger in diameter, used in sheet metal work.
- Tinning
- Coating a piece of metal with a very thin layer of Solder. This is a pretreating procedure before the application of body lead. To ensure that the body lead adequately covers and takes to the area to be repaired, a flux and a thin coating of tin or a special solder paint are applied
- T intersection
-
A road that no longer goes straight ahead but turns either to the left or the right
T intersection
- Tint tone
- A shade produced when a small amount of color is mixed with a large amount of white; this is required for formulating the ingredients of a certain paint tone
- Tipper
- Rear/side tipper: Specialized dump rig, usually. A roll-off tipper is a roll-off container carrying
setup.
See
- TIR
- Acronym for Total Indicator Reading. In disc brakes, this refers to a rotor runout reading of the entire swing of the dial indicator's needle, both above and below zero.
- Tire
-
- The rubber part of the wheel which contacts the ground. The construction can be Bias-ply Bias-belted or Radial. The Plies are made of rayon, nylon, and polyester. Belting can be Fiberglass steel, or kevlar. The rest of the tire is hard rubber.
- The rubber and cord donut on the wheel rim that is filled with pressurized air and transmits vehicle forces (including braking forces) to the road.
Also see- A-2 tire
- All terrain tire
- All-weather Tire
- Bald tire
- Balloon tire
- Beaded edge tire
- Belted bias tire
- Belted tire
- Bias belted tire
- Bias ply tire
- Bias tire
- Car tire
- Clincher tire
- Collapsible spare tire
- Commercial tire
- Continental tire
- Conti tire system
- Conventional spare tire
- Conventional tire
- Cross-ply tire
- Denovo tire
- Directional tire
- Dual bead tire
- Flat tire
- Front wheel tire clearance
- Green tire
- Grown tire
- Industrial tire
- Knobby tire
- Lateral tire clearance
- Longitudinal tire clearance
- Low-profile tire
- Low pressure tire
- Mountain Tire
- Mud and snow tire
- Off-road tire
- Overinflated tire
- Pneumatic tire
- Radial tire
- Road Tire
- Run-flat tire
- Run-on tire
- Semislick Tire
- Separation solid tire
- Sew-up tire
- Solid tire
- Space saving tire
- Spare tire
- Special mileage tire
- Steel belted radial tire
- Trailer Tire
- Triathlon Tire
- Tubeless tire
- Tubular tire
- Underinflated tire
- Undersize tire
- Whitewall tire
- Winter tire
- Wired-on tire
- X tire
- Tire balance
- Because tires turn at relatively high speeds, they must be carefully weighted so that they do not bounce or vibrate when they rotate. Two basic kinds of balancing are Static balanceDynamic balance.
- Tire bead
- That portion of the tire that bears against the rim Flange. The bead has a number of turns of steel wire in it to provide great strength.
- Tire bead lock
- The tire bead and rim of a TD rim are designed so that an enlarged and reinforced toe on the tire bead engages in a small circumferential groove in the bead seat area of the rim; the bead thus remains locked in position under both inflated and deflated conditions
- Tire casing
-
- The main body of the tire exclusive of the Tread tube, etc.
- Layers of cord, called plies, shaped in a tire form and impregnated with rubber, to which the tread is applied.
- Tire contact patch
- The area of tire rubber that actually touches the road at any one time. Also called the tire footprint.
- Tire deviation angle
- An angle formed by the direction of travel of a vehicle and the steered direction (that which the wheels are pointing). It is produced by distortions within the tire, due to external forces. Not to be confused by actual slipping or skidding. Also called Slip angle.
- Tier growth
- The stretching of textile tire cord materials due to heat and loss of strength, resulting in the Casing increasing in size.
- Tire iron
-
- A tool for removing a tire from the rim of a wheel.
Also see
- A tool for removing the nuts holding a wheel to the hub since one end is flat and the other has a socket.
Also see - A tool for removing a tire from the rim of a wheel.
- Tire jack
- A device which is used to lift one corner of a vehicle so that a wheel can be removed and replaced in the event of a flat tire.
Also see
- Jack.
- Tire lever
- A British term for a tool used to remove and install tires by lever action or to pry off parts.
Also see
- Tire paint
- A black paint, compatible to tire bodies, used to enhance the appearance of a tire after retreading.
- Tire plies
- The layers of nylon, rayon, etc., cloth that are used to form the casing. Most vehicle tires are two ply with a four ply rating. Two ply indicates two layers of cloth or plies.
- Tire pressure
- The manufacturer's recommended pressure for a tire, dependent on load, speed, etc., usually given in bar or pound-force per square inch (psi). (1.8 bar = 26 psi; 2 bar = 29 psi; 2.2 bar = 32 psi; 2.4 bar = 35 psi; 2.7 bar = 39 psi)
- Tire Pressure Monitor System
- (TPMS) Pressure sensors located in each wheel to directly measure the pressure in each tire and warn the driver when the air pressure in any tire drops at least 25% below the recommended cold tire inflation pressure identified on the vehicle placard.
- Tire roll-off
- A condition in which the bead unseats because a tire was run while flat. Also, the sudden loss of air due to side forces, such as hard cornering, combined with underinflation. The Safety ledge on passenger rims (a necessity for tubeless mountings) guards against a roll-off.
- Tire rotation
- Moving the wheel and tire assemblies to different locations (e.g., front
wheels to the rear and the rear to the front) to equalize any wear
irregularities in the tires.
Also see
- Tire sidewall
- That portion of the tire between the Tread and the bead.
- Tire size designation
- A designation specified on the tire sidewall; e.g., P205160 R 15, where P=Passenger car; 205 = tire width in millimeters; 60 = tire section height to width ratio; R = radial ply; 15 = nominal rim diameter in inches
- Tire Size Markings
- Those designations that appear on the side of a tire to indicate its basic dimensions; width, and rim diameter.
- Tire slip
- The difference between the speed of the vehicle and the speed between the tire and the ground, expressed in a percentage.
- Tire spreader
- Any device, manual or hydraulic, used to spread tire beads for inspection, repair, service, etc.
- Tire squeal
- The noise made by the tires when experiencing sudden acceleration or braking or when cornering too fast
- Tire store
- Retail outlet selling and installing tires and often offering other vehicle repair services.
- Tire tube
- An inflatable rubber device mounted inside some tires to contain air at sufficient pressure to inflate the casing and support the vehicle weight.
- Tire unbalance
- A tire that is not weighted properly can cause vibration. The condition is exaggerated by centrifugal force which increases as speed is increased and by the distance the heave spot is from the wheel axis.
- Tire valve
-
A small valve, mounted on the wheel rim of a Tubeless tire that allows air to be added to the tire with an air hose and allows air to be withdrawn from an over-inflated tire by pressing on the little stem at the end of the valve. Some tire valves have little caps to protect against leaks and keep dirt from fouling the valve. On tires with Inner tubes the tire valve is mounted on the inner tube. There are two kinds of valves used Presta and Schrader.
Tire valve
- Tire wear
- The amount by which, for example, the tread of a tire is worn down, or the sidewall damaged by impact with the curb
- Titanium
- A silvery gray metal with high corrosion resistance against salt waters, chlorides, and many acids. It is strong, though lightweight, and very expensive.