Patent ID: 6098596
Filing Date: 2000-08-08
Classification: F02D,F02M,Y02T

Abstract:
A process for operating an internal combustion engine, which comprises introducing air by an intake system of the engine into combustion chambers of the engine during an intake cycle, compressing the introduced air in the combustion chamber during a compression cycle, injecting fuel at a high pressure into the combustion chamber and igniting the introduced fuel with the compressed air by means of self-ignition, expanding the ignited fuel-air during an expansion cycle, and expelling the combustion products in an expulsion cycle of the engine, controlling fuel during injection by an electrical control device that controls fuel injection valves which are associated with a combustion chamber of the engine and which are supplied with fuel brought to a high pressure from a high pressure fuel reservoir during said injection, constantly monitoring the combustion chamber pressure by means of a pressure valve and conducting the gasses of the combustion chamber of the engine via the pressure valves into the intake system at a time that a highest permissible pressure is exceeded.