Cruise control - Revision history

24.186.170.199: /* Autonomous cruise control system */

2009-08-16T16:52:34Z

Autonomous cruise control system

← Older revision		Revision as of 16:52, 16 August 2009
Line 29:		Line 29:
	Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For 2006, Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.		Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For 2006, Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.

	[[Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].		[[Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[Audi Q7]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].

	[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the DTS series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.		[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the DTS series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.

MQuan: /* Autonomous cruise control system */

2006-11-20T20:25:44Z

Autonomous cruise control system

← Older revision		Revision as of 20:25, 20 November 2006
Line 31:		Line 31:
	[[Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].		[[Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].

	[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the [[DTS]] series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.		[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the DTS series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.

	==External links==		==External links==

MQuan: /* Autonomous cruise control system */

2006-11-20T20:25:27Z

Autonomous cruise control system

← Older revision		Revision as of 20:25, 20 November 2006
Line 29:		Line 29:
	Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For 2006, Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.		Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For 2006, Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.

	[[~~Toyota Motor Corporation\|~~Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].		[[Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].

	[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the [[DTS]] series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.		[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the [[DTS]] series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.

MQuan: /* Autonomous cruise control system */

2006-11-20T20:25:02Z

Autonomous cruise control system

← Older revision		Revision as of 20:25, 20 November 2006
Line 27:		Line 27:

	==Autonomous cruise control system==		==Autonomous cruise control system==
	Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For [[2006]], Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.		Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For 2006, Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.

	[[Toyota Motor Corporation\|Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their [[2006]] [[VW Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].		[[Toyota Motor Corporation\|Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their 2006 [[Volkswagen Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].

	[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the [[DTS]] series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.		[[General Motors Corporation\|General Motors]] [[Cadillac]] division now offers Adaptive Control on the [[DTS]] series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.



	==External links==		==External links==

MQuan at 20:24, 20 November 2006

2006-11-20T20:24:23Z

← Older revision		Revision as of 20:24, 20 November 2006
Line 42:		Line 42:
	*[http://www.snopes.com/autos/techno/cruise.asp Cruise Control: Driver sets the cruise control on his vehicle, then slips into the backseat for a nap. (Snopes.com)]		*[http://www.snopes.com/autos/techno/cruise.asp Cruise Control: Driver sets the cruise control on his vehicle, then slips into the backseat for a nap. (Snopes.com)]

	[[Category:~~Automotive accessories]]~~		[[Category:Technology]]
	~~[[Category:Automotive technologies]]~~
	~~[[Category:Auto parts]]~~
	~~[[Category:Automobiles~~]]

MQuan: /* References */

2006-11-20T20:23:56Z

References

@@ Line 33: / Line 33: @@
 [[General Motors Corporation|General Motors]] [[Cadillac]] division now offers Adaptive Control on the [[DTS]] series of its luxury vehicles. This is most notable by sensors mounted on the front bumper of the DTS. One must look closely because they are seamlessly integrated into the front of the vehicle. The 2007 [[Volvo S80]] will have such a system.
-== References ==
 ==External links==

MQuan: /* Autonomous cruise control system */

2006-11-20T20:23:14Z

Autonomous cruise control system

← Older revision		Revision as of 20:23, 20 November 2006
Line 27:		Line 27:

	==Autonomous cruise control system==		==Autonomous cruise control system==
	Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a [[radar]] or [[laser]] setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For [[2006]], Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.		Some modern vehicles have '''autonomous cruise control (ACC)''' systems. These use either a radar or laser setup to allow the vehicle to slow when approaching another vehicle and accelerate again to the preset speed when traffic allows. Some systems also allow the driver to choose a preset headway or following distance. [[Mercedes-Benz]] was the first to offer such a system, under the ''Distronic'' name, but similar adaptive systems are now offered by other manufacturers. For [[2006]], Mercedes-Benz refined the Distronic system to completely halt the car if necessary (now called 'Distronic Plus'), a feature not offered by any other implementation.

	[[Toyota Motor Corporation\|Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their [[2006]] [[VW Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].		[[Toyota Motor Corporation\|Toyota]]'s [[Lexus]] vehicles were second to market with "DLCC" (Dynamic Laser Cruise Control). [[Volkswagen]] will bring the technology to the mainstream with their [[2006]] [[VW Passat\|Passat]]. Other vehicles with adaptive cruise control include the [[Acura RL]], [[Audi A6]], [[Audi A8]], [[BMW 3 Series]] (called Active Cruise Control), [[BMW 5 Series]], [[BMW 7 Series]], [[Cadillac STS]], [[Cadillac XLR]], [[Infiniti M]], [[Infiniti Q45]], [[Jaguar XK8\|Jaguar XK-R]], Jaguar S, [[Lexus LS\|Lexus LS430/460]], [[Lexus ES\|Lexus ES-350]], [[Nissan Primera]] T-Spec Models (called Intelligent Cruise Control), [[Mercedes-Benz S-Class]], E55 AMG, CLS, SL, CL, [[Toyota Sienna]] XLE (limited availability), and [[Volkswagen Phaeton]].

MQuan: /* Advantages and disadvantages */

2006-11-20T20:22:58Z

Advantages and disadvantages

← Older revision		Revision as of 20:22, 20 November 2006
Line 17:		Line 17:

	Some of those advantages include:		Some of those advantages include:
	* Its usefulness for long drives across sparsely populated ~~[[road]]s~~. This usually results in better fuel efficiency.		* Its usefulness for long drives across sparsely populated roads. This usually results in better fuel efficiency.
	* Some drivers use it to avoid unconciously violating speed limits. A driver who otherwise tends to unconsciously increase speed over the course of a highway journey may avoid a speeding ticket. Such drivers should note, however, that a cruise control may go over its setting on a downhill which is steep enough to accelerate with an idling engine.		* Some drivers use it to avoid unconciously violating speed limits. A driver who otherwise tends to unconsciously increase speed over the course of a highway journey may avoid a speeding ticket. Such drivers should note, however, that a cruise control may go over its setting on a downhill which is steep enough to accelerate with an idling engine.

	However, cruise control can also lead to accidents due to several factors, such as:		However, cruise control can also lead to accidents due to several factors, such as:
	* The lack of need to maintain constant pedal pressure, which can help lead to accidents caused by [[highway hypnosis]] or incapacitated drivers; future systems may include a [[penalty switch]] to avoid this.		* The lack of need to maintain constant pedal pressure, which can help lead to accidents caused by [[highway hypnosis]] or incapacitated drivers; future systems may include a penalty switch to avoid this.
	* When used during inclement weather or while driving on wet or snow- and/or ice-covered roads, the vehicle could go into a skid. Stepping on the brake – such as to disengage the cruise control – often results in the driver losing control of the vehicle.		* When used during inclement weather or while driving on wet or snow- and/or ice-covered roads, the vehicle could go into a skid. Stepping on the brake – such as to disengage the cruise control – often results in the driver losing control of the vehicle.

MQuan: /* Theory of operation */

2006-11-20T20:22:34Z

Theory of operation

← Older revision		Revision as of 20:22, 20 November 2006
Line 11:		Line 11:
	In modern designs, the cruise control may or may not need to be turned on before use — in some designs it is always "on" but not always enabled, others have a separate "on/off" switch, while still others just have an "on" switch that must be pressed after the vehicle has been started. Most designs have buttons for "set", "resume", "accelerate", and "coast" functions. Some also have a "cancel" button. Or simply tapping the brake on most cars equipped with cruise control will disable it. The system is operated with controls easily within the driver's reach, usually with two or more buttons on the [[steering wheel]] or on the [[turn signal]] stalk.		In modern designs, the cruise control may or may not need to be turned on before use — in some designs it is always "on" but not always enabled, others have a separate "on/off" switch, while still others just have an "on" switch that must be pressed after the vehicle has been started. Most designs have buttons for "set", "resume", "accelerate", and "coast" functions. Some also have a "cancel" button. Or simply tapping the brake on most cars equipped with cruise control will disable it. The system is operated with controls easily within the driver's reach, usually with two or more buttons on the [[steering wheel]] or on the [[turn signal]] stalk.

	The driver must bring the car up to speed manually and use a button to set the cruise control to the current speed. The cruise control takes its speed signal from a rotating [[driveshaft]], [[speedometer]] cable or from the engine's [[RPM]]. Most systems do not allow the use of the cruise control below a certain speed (normally 35 mph/55 km/h) to discourage use in city driving. The car will maintain that speed by pulling the [[throttle]] cable with a solenoid or a [[vacuum]] driven [[servomechanism]]. On the latest vehicles fitted with [[electronic throttle control]], cruise control can be easily integrated into the vehicle's engine management system. Most systems can be turned off both explicitly and automatically, when the driver hits the [[brake]] or [[clutch]]. Cruise control often includes a memory feature to resume the set speed after braking and a coast feature to reset the speed lower without braking. When the cruise control is in effect, the throttle can still be used to accelerate the car, but once it is released the car will then slow down until it reaches the previously set speed.		The driver must bring the car up to speed manually and use a button to set the cruise control to the current speed. The cruise control takes its speed signal from a rotating [[driveshaft]], [[speedometer]] cable or from the engine's [[RPM]]. Most systems do not allow the use of the cruise control below a certain speed (normally 35 mph/55 km/h) to discourage use in city driving. The car will maintain that speed by pulling the [[throttle]] cable with a solenoid or a vacuum driven servomechanism. On the latest vehicles fitted with [[electronic throttle control]], cruise control can be easily integrated into the vehicle's engine management system. Most systems can be turned off both explicitly and automatically, when the driver hits the [[brake]] or [[clutch]]. Cruise control often includes a memory feature to resume the set speed after braking and a coast feature to reset the speed lower without braking. When the cruise control is in effect, the throttle can still be used to accelerate the car, but once it is released the car will then slow down until it reaches the previously set speed.

	==Advantages and disadvantages==		==Advantages and disadvantages==

MQuan: /* History */

2006-11-20T20:22:02Z

History

← Older revision		Revision as of 20:22, 20 November 2006
Line 4:		Line 4:

	==History==		==History==
	Speed control with a [[centrifugal governor]] was used in automobiles as early as the [[1910s]], notably by [[Peerless]]. Peerless advertised that their system would "maintain speed whether up hill or down". The technology was invented by [[James Watt]] and [[Matthew Boulton]] in [[1788]] for use in ~~[[locomotive]]s~~. It uses [[centrifugal force]] to adjust throttle position as the speed of the engine changes with different loads (e.g. when going up a hill).		Speed control with a centrifugal governor was used in automobiles as early as the 1910s, notably by Peerless. Peerless advertised that their system would "maintain speed whether up hill or down". The technology was invented by James Watt and Matthew Boulton in 1788 for use in locomotives. It uses centrifugal force to adjust throttle position as the speed of the engine changes with different loads (e.g. when going up a hill).

	Modern cruise control was invented in [[1945]] by the blind inventor and mechanical engineer [[Ralph Teetor]]. His idea was born out of the frustration of riding in a car driven by his lawyer, who kept speeding up and slowing down as he talked. The first car with Teetor's system was the [[Chrysler Corporation]] [[Chrysler Imperial\|Imperial]] in [[1958]]. This system calculated ground speed based on [[driveshaft]] rotations and used a [[solenoid]] to vary throttle position as needed.		Modern cruise control was invented in 1945 by the blind inventor and mechanical engineer Ralph Teetor. His idea was born out of the frustration of riding in a car driven by his lawyer, who kept speeding up and slowing down as he talked. The first car with Teetor's system was the [[Chrysler Corporation]] [[Chrysler Imperial\|Imperial]] in 1958. This system calculated ground speed based on [[driveshaft]] rotations and used a [[solenoid]] to vary throttle position as needed.

	==Theory of operation==		==Theory of operation==