Patent ID: 6805093
Filing Date: 2004-10-19
Classification: F02D,F02M

Abstract:
A method of providing engine exhaust braking and exhaust gas recirculation for an engine having an exhaust manifold and a plurality of exhaust valves per cylinder during a four stroke engine cycle, comprising the steps of:(a) carrying out an exhaust braking event, comprising the steps of: (a1) actuating a single exhaust valve beginning during a second half of a compression stroke and a first half of an expansion stroke, and (a2) closing said exhaust valve beginning during a second half of an exhaust stroke; and (b) carrying out an exhaust gas recirculation event, comprising the steps of: (b1) reactuating said exhaust valve beginning during a first half of an intake stroke, and (b2) closing said exhaust valve beginning during a second half of said intake stroke, wherein said exhaust valve does not completely close during said exhaust braking event and said exhaust gas recirculation event.