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2. Engine braking - Wikipedia

   en.wikipedia.org/wiki/Engine_braking

   A compression release brake (also known as a Jacobs brake or "jake brake"), is the type of brake most commonly confused with real engine braking; it is used mainly in large diesel trucks and works by opening the exhaust valves at the top of the compression stroke, so the large amount of energy stored in that compressed air is not returned to ...

3. Compression release engine brake - Wikipedia

   en.wikipedia.org/wiki/Compression_release_engine...

   A compression release engine brake, compression brake, or decompression brake is an engine braking mechanism installed on some diesel engines. When activated, it opens exhaust valves to the cylinders, right before the compression stroke ends, releasing the compressed gas trapped in the cylinders, and slowing the vehicle.

4. Manumatic - Wikipedia

   en.wikipedia.org/wiki/Manumatic

   This was provided to allow engine braking on downhills or prevent the use of overdrive gears when towing and was typically achieved using positions such as "3", "2", and "1" on the gear selector. An automatic transmission with a manumatic function provides a greater level of control by allowing the driver to request an upshift or downshift at a ...

5. US safety regulations will require better automatic braking - AOL

   www.aol.com/us-safety-regulations-require-better...

   Even though automatic emergency braking, or AEB, is already common on new vehicles sold in the US, these new requirements will save hundreds of lives per year, NHTSA officials said in a statement.

6. Retarder (mechanical engineering) - Wikipedia

   en.wikipedia.org/wiki/Retarder_(mechanical...

   Exhaust brakes are simpler in operation than an engine brake.Essentially, the exhaust pipe of the vehicle is restricted by a valve.This raises the pressure in the exhaust system, forcing the engine to work harder on the exhaust stroke of its cylinders, so again the engine is acting as an air compressor, with the power required to compress the air being withheld from the exhaust pipe, retarding ...

7. US to require automatic emergency braking on new vehicles in ...

   www.aol.com/news/us-require-automatic-emergency...

   In the not-too-distant future, automatic emergency braking will have to come standard on all new passenger vehicles in the United States, a requirement that the government says will save hundreds ...