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There are several variations of semi-autonomous cruise control that include additional convenience features for the driver. In the picture above, you can see two cables connected to a pivot that moves the throttle valve. One cable comes from the accelerator pedal, and one from the actuator.
How Cruise Control Works
But cruise control actuates the throttle valve by a cable connected to an actuator, instead of by pressing a pedal. The throttle valve controls the power and speed of the engine by limiting how much air the engine takes in (see How Fuel Injection Systems Work for more details). Cruise control is far more common on American cars than European cars, because the roads in America are generally bigger and straighter, and destinations are farther apart.
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How To Turn OFF Cruise Control, When To Use It & When Not
The cruise control system controls the speed of your car the same way you do – by adjusting the throttle (accelerator) position. However, cruise control engages the throttle valve by a cable connected to an actuator, rather than by pressing a pedal. The throttle valve controls the power and speed of the engine by limiting how much air it takes in (since it’s an internal combustion engine).
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The new technology also allows the system to automatically adjust the car's speed depending on the speed of the vehicle ahead. It ensures that the car maintains a safe distance from the vehicle ahead despite the constant change in speed of the vehicle moving ahead. It is instrumental in highways or during rush hour traffic and reduces driver fatigue.
The cruise control symbol is one such symbol that may be confusing or unfamiliar to some drivers. In this blog post, we will discuss what the cruise control symbol means and how to use it. Cruise control is safe when operated in safe driving conditions, by drivers with valid licenses who are sober and able to drive and use cruise control.
When the car is going 55 mph, the throttle position opening will be only half of what it was before. The result is that the closer the car gets to the desired speed, the slower it accelerates. Also, if you were on a steep enough hill, the car might not accelerate at all. The cruise control system actually has a lot of functions other than controlling the speed of your car. For instance, the cruise control pictured below can accelerate or decelerate the car by 1 mph with the tap of a button.
Always make sure to keep your eyes on the road, your vehicle cannot make driving decisions - you'll need to step in if need be. Cruise control in a car has been built keeping in mind comfort and safety. However, as a driver driving on cruise control, you must remain attentive with your eyes on the road for a safe drive. Additionally, ensure you have a relevant car insurance policy to protect against third-party liabilities and accidental damages to your car in case of unfortunate events like road accidents and collisions. You can browse our insurance plans and select one according to your specific needs and requirements. Using cruise control while commuting through a highway in clear weather is advisable.
Use It In Good Weather
It connects to the throttle control seen in the previous section, as well as several sensors. The diagram below shows the inputs and outputs of a typical cruise control system. A governor was used by James Watt and Matthew Boulton in 1788 to control steam engines, but the use of governors dates at least back to the 17th century. On an engine, the governor uses centrifugal force to adjust the throttle position to adapt the engine's speed to different loads (e.g., when going up a hill).
Don’t Drive On Slippery Roads
The system constantly maintains the speed set by you (driver) irrespective of road conditions. For example, if there’s an incline ahead, cruise control adjusts the throttle accordingly to maintain the same speed. Cruise control in a car replicates the inputs of a driver to control the vehicle’s speed.
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Do not attempt to set cruise control when you are traveling over the speed limit. Luxury automakers such as Tesla and Audi are implementing the newest rendition of cruise control on their latest vehicle models – Semi-autonomous Cruise Control. It works largely the same as adaptive cruise control, but assists drivers with lane guidance and steering.
It automatically controls the car’s steady speed by taking the control of the throttle body. It comes in cars having a drive-by-wire system where an electronically controlled throttle body is manipulated by a cruise control computer. The cruise control computer is a small computer that you can fit under the hood or in the cabin behind the dashboard. The driver can set the cruise control with the cruise switches, which usually consist of ON, OFF, RESUME, SET/ACCEL and COAST. These are commonly located on the steering wheel or on the windshield wiper or turn signal stalk. Tapping the knob in the opposite direction will decelerate the vehicle.
Cruise control is a feature that comes in handy when you drive at a constant speed. It is an electric system that allows you to set your car to a specific speed, letting you take your foot off the accelerator pedal. Another great benefit to using cruise control is that you are going to have greater fuel efficiency. Your vehicle will consume much less fuel if you cruise at a steady speed rather than accelerating at each section of the open road. When you accelerate sharply, it makes your engine use more energy, and you could be using 60% more fuel than one who uses cruise control. Ultimately, it's not hard to save on fuel if you let your vehicle automatically maintain a steady cruising speed.
However, an additional limiter can be added as an option in many European-made cars, as well as Tesla, Ford, and Nissan. Drivers are still required to keep their foot on the pedal to keep their vehicle in motion, but will not be able to accelerate past a predefined speed limit. Controlling the speed of a car is a classic application of control system theory.
Here, the cruise control system maintains throttle pressure, even in situations where it should be released instead. Older cable-based cruise control systems seem more prone to this rare problem, in which the cable can slip or bind, making the throttle stick into position. More modern vehicles with electronic throttle and monitoring systems make this problem even less likely.
If this is your first time using the cruise control system, and you have no idea how to turn it off, here are the steps you can follow. The below table highlights the key differences between cruise control and adaptive cruise control. You need to know what’s happening even though you’re not actively accelerating. Cruise control won’t brake for you, so if there’s a sudden slowdown ahead, you’ll need to be ready to hit the brakes. One stop place for car electronics reviews, industry trends, news and tips. However smart the cruise control may be, there are some situations where you SHOULD NOT use the feature altogether.
The main system, however, cannot function completely just by pressing the cruise main button. You have to set the other settings of the system, decide on the speed, and perform multiple other operations before you can finally use this system. You might want to turn off your adaptive cruise control for a few reasons. Maybe you’re approaching a stop sign or traffic light and must slow down. Or perhaps you’re going downhill and don’t want the car to speed up too much. You won’t have to worry about constantly adjusting your speed or worrying about traffic.
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