Patent ID: 8281587
Filing Date: 2012-10-09
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A method of controlling engine braking in a vehicle powered by an engine, the engine having a plurality of pistons reciprocating within a plurality of cylinders, reciprocation of the pistons causing rotation of a crankshaft, and an intake valve and an exhaust valve associated with at least one of the cylinders, the intake valve opening the cylinder to an intake manifold and the exhaust valve opening the cylinder to an exhaust manifold, the engine having a turbocharger having a turbine with a turbine inlet and a turbine outlet, the turbine inlet connected to the exhaust manifold and the turbine outlet connected to an exhaust outlet path, the turbine driven by exhaust gas passing from the turbine inlet to the turbine outlet, and a compressor mechanically driven by the turbine, during engine operation the compressor drawing ambient air through a compressor inlet and delivering pressurized air through a compressor outlet into the intake manifold, the comprising the step of: using power taken off the rotation of the crankshaft, pumping air during engine braking to increase the flow of compressed air into the intake manifold.