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2. Compression release engine brake - Wikipedia

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

   No Jake brakes sign. The use of engine compression brakes may cause a vehicle to make a loud "growling", "machine gun", or "jackhammer" like exhaust noise, especially vehicles having no mufflers, which has led many communities in the United States, Canada, and Australia to prohibit compression braking within municipal limits.

3. 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 ...

4. 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 ...

5. Challenged by electric cars, Brembo aims to put the brakes on ...

   www.aol.com/news/challenged-electric-cars-brembo...

   Brembo's <BRBI.MI> distinctive colored brakes stop many of the world's fastest cars but when it comes to the electric vehicles of the future it faces a problem - traditional brakes are noisy.

6. Exhaust brake - Wikipedia

   en.wikipedia.org/wiki/Exhaust_brake

   An exhaust brake is a valve which essentially creates a back-pressure in the exhaust system, which applies enough force onto the engine's pistons to slow the engine. In most cases, an exhaust brake is so effective that it can slow a heavily-loaded vehicle on a downgrade without ever applying the vehicle’s service brakes.

7. Noise, vibration, and harshness - Wikipedia

   en.wikipedia.org/wiki/Noise,_vibration,_and...

   The sources of noise in a vehicle can be classified as: Aerodynamic (e.g., wind, cooling fans of HVAC) Mechanical (e.g., engine, driveline, tire contact patch and road surface, brakes) Electrical (e.g., electromagnetically induced acoustic noise and vibration coming from electrical actuators, alternator, or traction motor in electric cars)