Method of removing impurities from EGR by air blowing, EGR system, and vehicle including the same
AssigneeHyundai Motor Company
InventorsDong-Sun Kim, Young-Sun Nam, Min-Kyu Won
Life of this patent
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Abstract
A method of removing impurities from EGR by air blowing may include performing an air-blowing mode in which, when a current intake system pressure detected by a controller exceeds a target intake system pressure in an intake system, in which a mixture is supplied to an engine, a portion of the mixture, serving as compressed air, flows into an EGR path, through which a portion of exhaust, serving as EGR gas and flowing in the intake system and an exhaust system connected to the intake system, is supplied to the engine.
Claims14
A method of removing impurities from exhaust gas recirculation (EGR) by air blowing, comprising:
- comparing a current intake system pressure with a target intake system pressure;
- checking an EGR valve opening condition of an EGR valve mounted at an EGR path when the current intake system pressure exceeds the target intake system pressure;
- opening the EGR valve and a dump valve mounted at a dump valve path connecting an intake system to the EGR path such that compressed air flows into the EGR path, when the EGR valve opening condition is satisfied;
- and
- closing the EGR valve and opening the dump valve mounted at the dump valve path connecting the intake system to the EGR path such that the compressed air flows into the EGR path, when the EGR valve opening condition is not satisfied,
- wherein the target intake system pressure is set based on an operating condition of an engine, and the operating condition is an accelerator pedal sensor stroke, an RPM of the engine, a gear-shift position, or a vehicle speed.
Dependencies are inferred from the claim text.