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{{More citations needed|date=October 2009}}

The modern usage of the term '''manumatic''' is an [[automatic transmission]] that allows the driver control to select a specific gear, typically using paddle-shifters or "+" and "-" controls on the [[Gear_stick#Automatic_transmission|gear selector]].
The modern usage of the term '''manumatic''' is an [[automatic transmission]] that allows the driver control to select a specific gear, typically using paddle-shifters or "+" and "-" controls on the [[Gear_stick#Automatic_transmission|gear selector]].


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== Automatic transmissions ==
== Automatic transmissions ==
{{refimprove section}}
Since the popularization of the [[Automatic_transmission#Hydraulic_automatic_transmissions|hydraulic automatic transmission]] in the 1940s, many automatic transmissions have allowed indirect control of the gear selection, usually in the form of locking out higher gears. This was provided to allow engine braking on downhills or prevent the use of [[overdrive (mechanics)|overdrive]] gears when towing, and was typically achieved using positions such as "3", "2" and "1" on the gear selector.
Since the popularization of the [[Automatic_transmission#Hydraulic_automatic_transmissions|hydraulic automatic transmission]] in the 1940s, many automatic transmissions have allowed indirect control of the gear selection, usually in the form of locking out higher gears. This was provided to allow engine braking on downhills or prevent the use of [[overdrive (mechanics)|overdrive]] gears when towing, and was typically achieved using positions such as "3", "2" and "1" on the gear selector.


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{{main|Automotive Products#Manumatic and Newtowndrive automated clutch systems {{!}} Automotive Products}}
{{main|Automotive Products#Manumatic and Newtowndrive automated clutch systems {{!}} Automotive Products}}


The Automotive Products company in the United Kingdom produced an automated clutch system for automobiles in the 1950s called the "Manumatic". This system is largely unrelated to the later usage of the term relating to automatic transmissions. The Manumatic was installed in cars with a manual transmission, allowing them to be driven without needing to use a clutch pedal.
The Automotive Products company in the United Kingdom produced an automated clutch system for automobiles in the 1950s called the "Manumatic". This system is largely unrelated to the later usage of the term relating to automatic transmissions. The Manumatic was installed in cars with a manual transmission, allowing them to be driven without needing to use a clutch pedal.<ref>{{cite journal |last1=Abbey |first1=Staton |title=Practical Automobile Engineering - Clutch Systems |pages=193-194}}</ref>


==See also==
==See also==
{{Transmission types}}
⚫
*[[Dual clutch transmission]]
*[[Automated manual transmission]]
*[[Automated manual transmission]]
*[[Automatic transmission]]
⚫
*[[Dual clutch transmission]]
{{clear right}}
{{clear right}}


Revision as of 06:28, 31 October 2020

The modern usage of the term manumatic is an automatic transmission that allows the driver control to select a specific gear, typically using paddle-shifters or "+" and "-" controls on the gear selector.

In the 1950s, the Automotive Products company in the United Kingdom produced an automated clutch system for automobiles called the "Manumatic". This system was installed in cars with a manual transmission, allowing them to be driven without needing to use a clutch pedal.

Automatic transmissions

Since the popularization of the hydraulic automatic transmission in the 1940s, many automatic transmissions have allowed indirect control of the gear selection, usually in the form of locking out higher gears. This was provided to allow engine braking on downhills or prevent the use of overdrive gears when towing, and was typically achieved using positions such as "3", "2" and "1" on the gear selector.

An automatic transmission with a manumatic function provides a greater level of control, by allowing the driver to request an upshift or downshift at a specific time. This is usually achieved using "+" and "-" positions on the gear selector or with paddle-shifters mounted beside of the steering wheel. Manufacturers use a variety of tradenames for the manumatic function, as listed below.

The driver often does not have full control of the gear selection, as most manumatic modes will deny a gear change request that would result in the engine stalling (from too few RPM) or over-revving. Some transmissions will hold the requested gear indefinitely, while others will return to automatic gear selection after a period of time.

Tradenames

1950s automated clutch system

Main article: Automotive Products

The Automotive Products company in the United Kingdom produced an automated clutch system for automobiles in the 1950s called the "Manumatic". This system is largely unrelated to the later usage of the term relating to automatic transmissions. The Manumatic was installed in cars with a manual transmission, allowing them to be driven without needing to use a clutch pedal.[1]

See also

References

  1. ^ Abbey, Staton. "Practical Automobile Engineering - Clutch Systems": 193–194. {{cite journal}}: Cite journal requires |journal= (help)
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