eli5: How does engine braking in cars work?

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Like, what is the mechanism that slows the car considering the hydraulic brakes aren’t involved at all? How does it vary by transmission type (manual, regular auto, CVT)?

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Anonymous 0 Comments

The engine continues doing the work of intaking air then pushing out exhaust, it just skips the step where it adds fuel into the engine. Pulling air in and pushing it out of the engine cylinders is still a lot of work to do, especially given that its happening 10-50 times a second, thats a lot of air being pushes and that creates a good amount of resistance.

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