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Topic: Differential (automotive)


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In the News (Wed 23 Dec 09)

  
  Differential (mechanics) - Wikipedia, the free encyclopedia
Differentials are typically composed of a gear mechanism in which a ring gear receives input power, which is transferred to two side gears by means of usually two opposing central pinion gears on a common shaft.
Vehicles without a center differential should not be driven on dry, paved roads in all wheel drive mode, as small differences in rotational speed between the front and rear of the vehicle cause a torque to be applied across the transmission.
The oldest known example of a differential, in the Antikythera mechanism, used such a train to produce the difference between two inputs, one input related to the position of the sun on the zodiac, and the other input related to the position of the moon on the zodiac.
en.wikipedia.org /wiki/Differential_(mechanics)   (1242 words)

  
 Automotive - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-11-07)
Through the period from 1900 to the mid 1920s, development of automotive technology was rapid, due in part to a huge (hundreds) number of small manufacturers all competing to gain the world's attention.
For the most part, "new" automotive technology was a refinement on earlier work, though these refinements were sometimes so extensive as to render the original work nearly unrecognizable.
Early in automotive history, before gasoline was widely available at corner pumps, cars ran on many fuels, including kerosene (paraffin) and coal gas.
encyclopedia.worldsearch.com /automotive.htm   (2114 words)

  
 Autoworld.com - BMW M3 - The Variable M Differential Lock   (Site not responding. Last check: 2007-11-07)
Differentials are essential, of course, because the two drive wheels of a car cover distances different in length in a corner, the inner wheel not traveling as far as the outer wheel.
A further advantage of the Variable M Differential Lock is the increase in locking forces parallel to any increase in differential speed between the drive wheels.
The Variable M Differential Lock functions according to a simple principle: The difference in rotational speed that builds up between the two drive wheels whenever one of the drive wheels loses grip, either because it has become unloaded or hit a slippery surface, generates pressure spontaneously in an integrated shear pump.
www.autoworld.com /news/bmw/m_difflock.asp   (695 words)

  
 Motor Age: Traction control: limited slip differential   (Site not responding. Last check: 2007-11-07)
The differential housing acts as a common combination ring gear and planet carrier, so all of the input torque is applied to the planet gears all the time, and it's up to the planet gears to split the torque.
Tiffs type of differential is commonly used in vehicles that use ABS for electronic traction control and also as the center differential in full-time four-wheel drive.
Obviously, a viscous clutch differential is extremely smooth, and it's often used as the center differential in full-time four-wheel drive.
www.findarticles.com /p/articles/mi_m3102/is_9_123/ai_n6221223   (1111 words)

  
 CanadianDriver: Auto Tech - Subaru brings rally car technology to the street
The rear axle differential is a mechanical limited slip unit, and the third differential is located at the rear of the manual transmission and can be controlled by the driver.
This centre differential can automatically vary the ratio of the power split between the front and the rear axles, or the split can be set by the driver with a switch on the console.
As the driver turns into the corner, the differential provides a 65/35% front to rear torque split for optimum traction and continues to vary the torque split until the gripping point of the corner is reached.
www.canadiandriver.com /articles/jk/031210.htm   (788 words)

  
 Musclecarclub.com - Library - Tech - Differential
The differential is located between the two wheels, and is attached to each wheel by a half-shaft rotated through a bevel gear.
Part-time four-wheel-drive systems don't have a differential between the front and rear wheels; instead, they are locked together so that the front and rear wheels have to turn at the same average speed, which makes these vehicles are hard to turn on concrete when the four-wheel-drive system is engaged.
The differential pinion (a pinion is a small gear that either drives a larger gear or is driven by one) shaft turns the ring gear, which is fastened to the differential case.
www.musclecarclub.com /library/tech/differential.shtml   (2326 words)

  
 Behring Auto Keys Online Automotive Glossary   (Site not responding. Last check: 2007-11-07)
HYPOID GEARS A type of differential final drive using a spiral bevel gear on the drive shaft, allowing it to be located below the center of the ring gear on the axle.
A differential that uses cone or disc clutches to lock the two separate axle shafts.
The assembly of springs, shock absorbers, torsion bars, joints, arms, etc., that cushions the shock of bumps on the road and serves to keep the wheels in constant contact with the road, thereby improving control and traction.
www.blackhawkauto.org /keys/resources/glossaries/autog.html   (3358 words)

  
 CARS Light Vehicle Automotive CDROM   (Site not responding. Last check: 2007-11-07)
When a vehicle is turning, a standard differential allows the two drive shafts and the driving road wheels to rotate at different speeds while still applying an equal turning effort to both.
The differential gears are bevel gears which are mounted at right angles to each other inside the differential case.
Limited slip differentials allow differential action under normal driving conditions but reduce or prevent differential action when conditions are not normal so that a wheel cannot spin.
homepages.ihug.co.nz /~educate1/CDX/Mod14D1.htm   (537 words)

  
 differential gear --  Encyclopædia Britannica   (Site not responding. Last check: 2007-11-07)
in automotive mechanics, gear arrangement that permits power from the engine to be transmitted to a pair of driving wheels, dividing the force equally between them but permitting them to follow paths of different lengths, as when turning a corner or traversing an uneven road.
The Differential Analyzer, as he called it, was an analog calculator that could be used to solve certain classes of differential equations, a type of problem common in physics and engineering applications that is often very tedious to...
The differential applies power as needed to the wheels while they turn at different speeds on curves.
www.britannica.com /eb/article?tocId=9030413   (810 words)

  
 Eaton Automotive-FAQs   (Site not responding. Last check: 2007-11-07)
The Eaton locker is an automatic locking differential for rear wheel, and four wheel drive vehicles.
As long as there is no wheel slip, the locker performs as a standard open differential which merely allows the vehicle's rear drive wheels to rotate at the different speeds necessary for cornering.
The Eaton limited slip differential is currently available for several GM, Ford, and Import vehicle and/or light duty truck applications.
www.traction.eaton.com /prod6.htm   (464 words)

  
 DICTIONARY OF AUTOMOTIVE TERMS - D   (Site not responding. Last check: 2007-11-07)
differential unit is bolted to the frame and is connected to the driving wheels by drive axles using
A diaphragm is used in pumps to create a pressure differential that causes a fluid to be pushed or pulled from one point to another.
In an automotive clutch the diaphragm spring is part of the clutch pressure plate.
automotivebee.com /glossary/d.htm   (12794 words)

  
 Automotive Transmissions and other Automotive Parts at TopTimeTools.com   (Site not responding. Last check: 2007-11-07)
Good automotive transmissions can be very important for the general quality of your automotive, and for that reason you may want to look closely at the better automotive differentials that you consider buying.
When you are trying to decide on a type of automotive differential, it pays to review the list of possible better automotive differentials carefully to make sure your selection is ideal.
You may find that the price of the automotive transmissions you are shopping for can have a range, depending both on the features and the brand that you are considering.
www.toptimetools.com /Automotive/Automotive-Transmission-Product.htm   (464 words)

  
 CanadianDriver: Auto Tech - BMW Variable M-differential lock
The traction advantages of this differential lock are limited by the maximum traction torque of the slipping wheel.
As soon as the two sheer discs turn at different rates, the silicone oil is sheered by the grooves in the sheer plates and this generates a pressure dependent on the speed differential of the two plates.
Conventional limited slip differentials use a little constant pressure on their clutches to preload the differential.
www.canadiandriver.com /articles/jk/at_011219.htm   (688 words)

  
 AUTOS & BOATS : Replica & Kit Cars : 1962 Fort T-Bird: Limited-Slip Differential : DIY Network
The original differential that came standard on the 1962 roadster was an open differential with a 3-to-1 gear ratio.
Once the differential is drained, lift it off its studs and carefully lower it from the vehicle.
Open the differential fill-plug, then add enough gear-lube to fill the chamber up to the hole where the plug was installed.
www.diynet.com /diy/ar_replica_car_kits/article/0,2021,DIY_13707_2826367,00.html   (1029 words)

  
 Serdes chipset survives automotive environments: News from National Semiconductor
Harsh automotive and industrial environments require a serdes that can withstand high temperatures, and includes testability for continuous, reliable operation.
'Automotive and industrial data transfer and display applications demand robust products, and National will continue to meet those needs through innovations in ruggedness and testability'.
The chipset also features an at-speed BIST (built-in self-test) mode which allows the data transmission path between the serialiser and deserialiser to be verified at speed.
www.electronicstalk.com /news/nat/nat318.html   (517 words)

  
 Enjoy The Drive -- Differential Gears   (Site not responding. Last check: 2007-11-07)
Manufacturer of finned, aluminum differential covers for trucks, 4x4s and street rods, plus tooling (foundry patterns) for the automotive and aircraft industries.
Automotive repair facility, specializing in Porsche, Audi, Volkswagen, Mercedes-Benz, BMW, Land Rover and domestic vehicles.
Complete automotive restyling center specializing in suspension lifts, lowering kits and wheel and tire packages for the automotive industry.
www.enjoythedrive.com /directory/detail.asp?id=26879   (1502 words)

  
 Auburn Gear - Home
OEM Differentials meet exacting performance requirements for light trucks, passenger cars and industrial/off-road vehicle needs.
Automotive Aftermarket products offer a full range of limited-slip differentials that deliver optimum vehicle performance.
The D-REX Program, D ifferential R eplacement EX change program, provides our limited-slip differential customers the ability to replace their existing differential at a price comparable to that of a competitor's clutch-pack service kit.
www.auburngear.com   (197 words)

  
 Automotive Transmissions and other Automotive Parts at TopEQ.com   (Site not responding. Last check: 2007-11-07)
There are a number of better automotive differentials available, and the power or strength needs of each can vary somewhat.
Don't forget the reason your buying the type of automotive differential in the first place, and ensure that the all sorts of suspension transmissions you are looking at will do the job you need no matter what other fancy features they may offer.
The fact is, one brand of type of automotive differential may have a much better reputation than another, and for good reason.
www.topeq.com /Automotive/Automotive-Transmission-Features.htm   (419 words)

  
 Automotive Industry, Directory of Automotive Industry in India   (Site not responding. Last check: 2007-11-07)
Automotive Components & Parts - Manufacturers & Exporters directory of automobiles components & parts, automobile oils, lubricants and automotive security products.
Pricol Limited - Manufacturers and exporters of automotive dashboard instruments & accessories, oil pumps, disc brakes, sintered components and also provides switches, sensors, speedometer cables and pressure gauges.
Roop Automotives Limited - Manufacturers of differential housings, gears, connecting rods, yokes, proportionating valves, special bolts and high precision bushes.
www.surfindia.com /automotive   (1548 words)

  
 Eaton Automotive Parts at 4 X 4 PLUS
A differential is in place - usually in the center of the axle housing - to allow one wheel to rotate faster than the other.
So, when high torque comes to the differential and both wheels are on a high traction surface, like a drag strip or country road, and high torque is delivered to the axle, the clutch pack clamps the gears to the differential case.
The whole point of the torque sensing limited slip differential is to reduce the likelihood of wheel slip.
www.4x4plus.com /Eaton.htm   (689 words)

  
 Automobile. Everything you wanted to know about Automobile but had no clue how to find it.. Learn about Automobile here!   (Site not responding. Last check: 2007-11-07)
1920s, development of automotive technology was rapid, due in part to a huge (hundreds) number of small manufacturers all competing to gain the world's attention.
1968 which substantially altered the course of automotive development.
Early in automotive history, before gasoline was widely available at corner pumps, cars ran on many fuels, including
encyclopedia.lockergnome.com /s/b/Automobile   (2275 words)

  
 Remanufactured Transmissions and other Automotive Parts at Auto-Parts-And-Repair.com   (Site not responding. Last check: 2007-11-07)
In some cases, the automotive transmissions may not all be the same size, and this could cause a problem once you get your special automotive-style transmissions.
In the old days, the best option people had was to grab their phonebook and look up the sort of store that sells automotive and visit a couple of those to try to find the type of remanufactured differential they wanted to buy.
Naturally, that "in-person" form of shopping for automotive transmissions is not going to go away any time soon, however you may find an even better price on your type...
www.auto-parts-and-repair.com /Automotive/Remanufactured-Transmission-Product.htm   (443 words)

  
 Automatic Transmissions and other Automotive Parts at TopTimeTools.com   (Site not responding. Last check: 2007-11-07)
These are great for automotive and may fulfill your need for a type of automatic differential quite nicely.
If you want to buy automotive transmissions, you can look in your neighbourhood at stores that sell better automatic differentials, but you can also check on the Internet for more automotive transmissions at any of the thousands of websites that offer that sort of thing.
In some cases, the automotive transmissions may not all be the same size, and this could cause a problem once you get your special automotive-style drive shafts.
www.toptimetools.com /Automotive/Transmissions-Product.htm   (457 words)

  
 Automotive Glossary
The main disadvantage of an "open" differential is that the usable torque is restricted by the wheel with the least traction.
A differential lock literally locks out the differential action and forces torque to be split equally between each wheel (or each axle)for maximum traction.
In a full-time or permanent four-wheel drive wehcile, locking the center differential locks the front and rear drive-shafts together, sending equal torque to the front and rear axles.
www.car-list.com /autoglossary/dl.html   (142 words)

  
 Car Transmissions and other Automotive Parts at TopEQ.com   (Site not responding. Last check: 2007-11-07)
You have a range of choices when looking for a car transmission, and the perfect type of car differential for you has a lot to do with what sort of automotive you do or need.
The automotive capability that you need can have an impact on the ultimate price of the car transmissions that you are shopping for.
Shopping for automotive transmissions can be a bit of a chore, but there is no reason why you should need to pay more for your car transmission than absolutely necessary.
www.topeq.com /Automotive/Car-Transmission-Product.htm   (479 words)

  
 Sensor suits automotive engine control: News from Allegro MicroSystems Europe
A novel zero-speed differential gear-tooth sensor is optimised to address the stringent requirements of automotive engine control, especially crank speed and position sensing.
The ATS625 from Allegro MicroSystems Europe is a zero-speed differential gear-tooth sensor which is optimised to address the stringent requirements of automotive engine control, especially crank speed and position sensing.
By means of differential threshold detection and algorithms such as automatic gain control and automatic offset adjustment, the ATS625 offers very high levels of relative edge accuracy and switching, independently of the airgap.
www.engineeringtalk.com /news/alb/alb134.html   (290 words)

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