- Mud and snow tire
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(M+S tire) A winter tire with a deep tread and big ribs that reduce contact area on dry roads, but give a good grip on loose surfaces. It tends to fling off packed-in snow as the tire revolves.
Mud and snow tire
- Mud flap
- A rubber or plastic Shield which is positioned behind a wheel (usually the rear wheels) to prevent mud and small rocks from being thrown up against the body of the vehicle or from being thrown at a following vehicle. Also called splash guard
- Mudflap
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See
- Muffler
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- A unit through which the Exhaust gases are passed to quiet the sounds of the running engine. The British term is silencer.
- A hollow, tubular device used in the discharge line of some systems to muffle the thumping sounds made by the compressor. Sometimes used on the low side too.
- Muffler, compressor
- Sound absorber chamber in refrigeration system. Used to reduce sound of gas pulsations.
- Mullion heater
- Electrical heating element mounted in the mullion. Used to keep mullion from sweating or frosting.
- Multi-function control stalk
- A rod-shaped control mounted on the steering column near the steering wheel. A unit could operate the signal lights, headlight dimmer switch, wipers, windshield washer, cruise control, and horn
- Multigrade oil
- An engine oil that meets the viscosity requirements of several different single-grade engine oil types. Also called Multi-viscosity oil
- Multi-hole nozzle
- A two-hole, three-hole, or four-hole injector nozzle in a direct injection engine.
Also see
- Multileaf spring
- A Leaf spring with several flat leaves bundled together by steel bands.
- Multi-link independent rear suspension
- A special multi-link rear suspension design, developed by Mercedes-Benz for the W 201 series
- Multi-link rear suspension
- A general term for independent rear suspension layouts incorporating several control arms.
- Multilink suspension
- A Rear suspension consisting of at least four links, or arms, and no Struts. Because multilink suspensions assign specific wheel-locating duties to each element, they provide great flexibility for optimizing both ride and handling.
- Multi-piece rim
- A rim type incorporating at least one demountable bead seat and/or rim flange to allow tire mounting. The opposite is a One-piece rim. The bead seats of all multi-piece rims (except flat base rims) have a 5° taper; rims incorporating the semi-drop center, the tapered bead seat or the flat base design are multi-piece rims
- Multi-piece wheel
- A wheel type incorporating at least one demountable bead seat and/or rim flange to allow tire mounting. The opposite is a One-piece wheel. The bead seats of all multi-piece wheels (except flat base rims) have a 5° taper; wheels incorporating the semi-drop center, the tapered bead seat or the flat base design are multi-piece rims
- Multi-plate clutch
- British term for Multiple-disc clutch
- Multiplate clutch
- A clutch with several friction and drive plates. Its compact size makes it ideal for motorcycles
- Multiple disc clutch
- A Clutch which has several Clutch discs in its construction. The greater number of discs allows the size of the Bell housing to be smaller in diameter and still maintain Efficiency. A clutch with more than one driven plate, usually of the oil-immersed type; frequently used in motorcycle drive trains, in automatic transmissions of cars, in power distribution systems of 4WD vehicles, and as locking elements in limited-slip differentials.
Also see
- Multiple-disc limited-slip differential
- Limited-slip differential incorporating multiple discs as locking or slip-inhibiting devices
- Multiple-plate clutch
- British term for Multiple-disc clutch
- Multiple stage compressor
- Compressor having two or more compressive steps. Discharge from each step is the intake pressure of the next in series.
- Multiple system
- Refrigerating mechanism in which several evaporators are connected to one condensing unit.
- Multiplex technology
- In cars, connecting lamps, wipers, horn, etc. to a single power cable via electronically controlled modules, making it easier to diagnose faults and to service the problem
- Multiplier vacuum booster
- A vacuum brake power booster that installs between the master cylinder and the wheel friction assemblies. Actuated by hydraulic pressure from the master cylinder.
- Multi-point fuel injection
- (MPFI) a fuel injection system that uses one injector per cylinder, mounted on the engine to spray fuel near the intake valve are or the combustion chamber. Also called Multi-port injection
- Multi-point injection
- (MPI) Gasoline fuel-injection system in which only air enters the inlet manifold; as the air approaches the inlet valve, an injection valve opens in the valve port, spraying fuel into the airstream.
Also see
- Multi-port injection
- A fuel injection system that uses one injector per cylinder, mounted on the engine to spray fuel near the intake valve are or the combustion chamber. Also called Multi-point fuel injection
- Multi-port injection
- A fuel injection system that uses one injector per cylinder, mounted on the engine to spray fuel near the intake valve are or the combustion chamber. Also called Multi-point fuel injection
- Multi-purpose file
- A flat file with faces featuring different cuts, e.g., coarse cut on one side and smooth cut on the other
- Multipurpose ship
- A ship designed for carrying different types of cargoes requiring different methods of handling.
Also see
- Multi-spark coil
- A type of ignition coil used in static high-voltage distribution, designed as a double-spark or four-spark coil
- Multi-spark ignition coil
- A type of ignition coil used in static high-voltage distribution, designed as a double-spark or four-spark coil
- Multi-stage pump
- A pump with two or more stages (impellers/diffusers or other pumping elements) operating in series. Multi-stage centrifugal pumps are employed to operate against higher pressures, where several impellers are built onto one shaft in the same casing
- Multi-suction pump
- A centrifugal pump with several impellers connected in parallel; i.e., the flow is separated into two or more partial flows. Multi-suction usually means double suction in practice
- Multi-viscosity oil
- Oil meeting SAE Requirements for both low temperature requirements of a light oil and the high temperature requirements of a heavy oil. Example (SAE 10W-30). Also called Multiweight.
- Multi-viscosity oils
- Oils meeting SAE Requirements for both low temperature requirements of a light oil and the high temperature requirements of a heavy oil. Example (SAE 10W-30). Also called Multiweight.
- Muntz
- A vehicle brand of which the 1950-54 Jet models are milestone cars.
- Muscle car
- A two-door car (including hardtop or convertible) built during 1961-1973 usually with a powerful engine. Includes Ford Mustang, Cobra, and Cougars, etc.; General motors GTO, Grand Prix, Camaro, and Firebird, etc.; Chrysler Charger, GTX, and Satellite, etc. It must be in original form with no modern technology, equipment, or refinements except wheels.
- Mush pot
- A container used to keep body lead bars in a semi-liquid state to enable them to be spread directly onto the car body
- Mushroom-shaped dolly
- A dolly with a shank to allow it to be hand-held or clamped in a vice; a more or less rounded head may be fitted to one or both ends of the shank
- Mushroom tappet
- A tappet shaped like a mushroom located on the underside of a pushrod operating the valves of a four-stroke engine.
Also see
- Mustang
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Click image for books on
Ford Mustang- A Ford vehicle brand of which the 1965-67 GT/GTA V-8 models are milestone cars.
- The 1969-70 Boss 302/Mach 1 models are milestone cars
- Mutual inductance
- A condition that takes place when the current in one winding induces an EMF in another winding in the same magnetic circuit