Exhaust Brake
Exhaust Brakes are used on diesel engines to provide vehicle retardation by choking the exhaust gas flow downstream of the turbocharger.
The exhaust brake has a throttle valve which is actuated by a pneumatic operating cylinder.
The back pressure realized by a conventional uncontrolled exhaust brake is proportional to the engine speed. The controlled exhaust brake however is equipped with a mechanism that maintains a constant counter-pressure downstream of the turbocharger in a defined gas flow range. This consequently allows constant retardation that is independent of engine load and speed.

Exhaust Brake
Exhaust Brakes are used on diesel engines to provide vehicle retardation by choking the exhaust gas flow downstream of the turbocharger.
The exhaust brake has a throttle valve which is actuated by a pneumatic operating cylinder.
The back pressure realized by a conventional uncontrolled exhaust brake is proportional to the engine speed. The controlled exhaust brake however is equipped with a mechanism that maintains a constant counter-pressure downstream of the turbocharger in a defined gas flow range. This consequently allows constant retardation that is independent of engine load and speed.