Device for increasing the braking power of a multi-cylinder combustion engine of a vehicle during the operation of the engine brake

摘要

An exhaust valve braking system for an IC engine supplements the engine braking effect by taping off a controlled amount of exhaust flow when the exhaust ducts are closed by the braking control valve. The exhaust system includes two ducts, each with a shutoff valve and a bypass. The two bypass ducts end tangentially in the turbocharger housing to provide a controlled tangential exhaust flow to keep the turbocharger rotating and prevent the engine from stalling.