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Cruise Control minimum speed

Cruise Control minimum speed

The minimum speed for the cruise control on my Tesla Roadster is 30 mph. I prefer for Model S this minimum speed will to be lower. Using Cruise Control, even at low speeds, makes driving safer. It is better to look outside the car and scan for what is going on on the road with your right foot ready to brake instead of concentrating on your speedometer and your right foot on the accelerator to avoid a ticket.

Brian H | September 19, 2012

jerry3;
The calculus may be different for a BEV. Accel makes for inefficiency in ICE engines because of the uneven torque curve, etc. (hence the gear changes). The EV's flat power curve makes it much more a simple physics equation, without the wastage penalties.

Braking unnecessarily always wastes energy -- but regen mitigates that in an EV.

The details of how the cruise control is set up probably makes considerable difference, especially in regards to how different terrains are handled. Data on side-by-side trials would be interesting.

But in the end, cruise control is a convenience, not a hyper-miling aid.

jerry3 | September 19, 2012

Brian,

- The calculus may be different for a BEV

It may be. And it may vary with different BEVs. There really isn't enough experience to know.

- Braking unnecessarily always wastes energy -- but regen mitigates that in an EV

To some extent. It depends on the efficiency of the regen. Of course, any regen is better than throwing all the energy away as heat the way friction brakes do.

- But in the end, cruise control is a convenience, not a hyper-miling aid

That's certainly correct. But the original question was "isn't CC more efficient than human driving". And the answer is "no" assuming the human is driving for efficiency.

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