eli5: what are engine brakes and Jake brakes.

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I tried to Google engine brakes after seeing all the avoid use of engine brake signs and now I’m more confused. Can someone explain what engine brakes are, what Jake brakes are (if they are different), and why they are loud. Thanks.

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7 Answers

Anonymous 0 Comments

engine breaking is stepping off the accelerator and changing to a lower gear than appropriate for the speed of the car to use the vacuum/compression in the cylinders and friction in the drive train to slow the car, the point is to avoid wearing out the brakes and also old brakes weren’t so powerful, it doesn’t really apply to new cars but it’s useful to know how in case your brakes should fail. Jakes brakes are similar but a more deliberate system installed in diesel cars https://en.wikipedia.org/wiki/Compression_release_engine_brake

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