초록 ▼

A turbocharged internal combustion engine assembly with exhaust gas recirculation (EGR) includes an air compressor driven by an exhaust turbine, an EGR line that diverts exhaust gases from an exhaust line leading from the engine to an air intake line leading to the engine from the compressor, and a

A turbocharged internal combustion engine assembly with exhaust gas recirculation (EGR) includes an air compressor driven by an exhaust turbine, an EGR line that diverts exhaust gases from an exhaust line leading from the engine to an air intake line leading to the engine from the compressor, and a combustion bypass line that conveys compressed air from the compressor to the exhaust turbine without combustion. A pressure adjusting feature disposed along at least one of the air intake line and the exhaust line maintains the pressure at the turbine inlet below the pressure at the compressor outlet and above the pressure at the air inlet of the engine. Examples of suitable pressure adjusting features include a venturi placed in the air intake line at the second point, a power turbine located along the exhaust line downstream of the exhaust turbine, a split exhaust manifold feeding unequal turbine inlets, and an orifice located along the exhaust line between the EGR line and the bypass line.

대표청구항 ▼

1. A turbocharged internal combustion engine assembly with exhaust gas recirculation comprisingan internal combustion engine having an air intake and an exhaust gas outlet; an exhaust gas turbine having a turbine inlet and a turbine outlet; an air compressor driven by said exhaust gas turbine; an ai

1. A turbocharged internal combustion engine assembly with exhaust gas recirculation comprisingan internal combustion engine having an air intake and an exhaust gas outlet; an exhaust gas turbine having a turbine inlet and a turbine outlet; an air compressor driven by said exhaust gas turbine; an air intake line extending from said compressor to said engine intake; an exhaust line extending from said exhaust gas outlet to said turbine inlet; an exhaust gas recirculation line extending from a first point on said exhaust line downstream of said engine to a second point on said air intake line upstream of said engine; a combustion bypass line extending directly from a third point on said air intake line upstream of said exhaust gas recirculation line to a fourth point on said exhaust line downstream of said exhaust gas recirculation line; and a pressure adjusting feature disposed along at least one of said air intake line and said exhaust gas line to maintain the pressure at said fourth point below the pressure at said third point and above the pressure at said second point.