Isn't cylinder deactivation for when you are at constant speed at low throttle? | Hacker News

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		oynqr 10 months ago \| parent \| context \| favorite \| on: Dust from car brakes more harmful than exhaust, st... Isn't cylinder deactivation for when you are at constant speed at low throttle?

landgenoot 10 months ago [–]

They open the exhaust valves of every cylinder while coasting.

Therefore, the engine keeps running, but there is no combustion.

You can see your live fuel consumption go to 0 when you lift the gas pedal on a modern ICE car.

kjkjadksj 10 months ago | [–]

That is whats always happened when you lift your pedal on a manual car at least.

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