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Transcript

Difference Between Automatic

and Standard Transmissions

By Hassly Pacheco

pd. 5

gear shifter

Citations

  • Wikimedia Foundation, Inc. "Manual Transmission." Wikipedia. 1-13. Print
  • - - -. "Manual Transmission." Wikipedia. 1-13. Print.
  • www.cardealerexpert.com
  • Lutzenberger, Tom. "Manaul Transmission vs Automatic Transmissions." Ehow. ehow, 1999-2012. Web. 24 Oct. 2012. <http://www.ehow.com/ about_6301414_manual-transmissions-vs_-automatic-transmissions.html>.

Fast Facts

  • Cars with manual transmissions get about 10 percent better gas mileage
  • Manual transmission vehicles are usually about $700 less
  • Manual Transmissions give you more control in tough driving conditions.
  • the manual transmission requires very little engine power to function.
  • there is a much smaller likelihood that it will need repairs as compared to an automatic transmission. Automatic transmission repairs also can be very costly.

Power Shift Gear box

History

Gear shifter

Gear Shift types:

Manual Transmissions were the first transmission used in cars all over the globe. They were used from commercial cars to family cars, up until 1939 when the automatic transmissions were introduced.

Floor-mounted shifter- In most vehicles with manual transmission, gears are selected by manipulating a lever called a gear stick, shift stick, gearshift, gear lever, gear selector, or shifter connected to the transmission via linkage or cables and mounted on the floor, dashboard, or steering column. Moving the lever forward, backward, left, and right into specific positions selects particular gears.

Column-mounted shifter-mounted on the steering column of the car. If a U.S. vehicle was equipped with overdrive, it was very likely to be a Borg-Warner type, operated by briefly backing off the gas when above 28 mph to enable, and momentarily flooring the gas pedal to return to normal gear. The control simply disables overdrive for such situations as parking on a hill or preventing unwanted shifting into overdrive.[

Different types of auto transmissions

Definition

Fast Facts

The manual Transmission, otherwise know as the "stick shift" or "standard transmission", was the first type of transmissions available in vehicles. A manual transmission relies on the driver to disengage, change, and reengage the transmission.

  • Continuously variable transmission- is a transmission that can change steplessly through an infinite number of effective gear ratios between maximum and minimum values. This contrasts with other mechanical transmissions that offer a fixed number of gear ratios. The flexibility of a CVT allows the driving shaft to maintain a constant angular velocity over a range of output velocities.
  • Semi-automatic transmission-is an automobile transmission that does not change gears automatically, but rather facilitates manual gear changes by dispensing with the need to press a clutch pedal at the same time as changing gears. It uses electronic sensors, pneumatics, processors and actuators to execute gear shifts on the command of the driver or by a computer.
  • Most cars sold in North America since the 1950s have had an automatic transmission.
  • Automatic transmissions are less energy efficient than manual transmissions due mainly to viscous and pumping losses, both in the torque converter and the hydraulic actuators
  • The modern automatic transmission is by far, the most complicated mechanical component in today's automobile.
  • It is easier to drive and Automatic car

History

Definition

The first automatic transmission were developed by General Motors During the 1930s and introduced in the 1940 Oldsmobile as the "Hydra-Matic" transmission. They were incorporated into GM-built tanks during WW-II and, after the war, GM marketed them as beign "battle tested".

An automatic(also called automatic gear box, or automatic transmission)is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually.

The are two major differences in automatic transmissions that aren't in manual transmissions:

-There is no clutch pedal

-there is no gear shift

Once you put the transmission into drive, everything else is automatic.

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