초록 ▼

An exhaust manifold integrally cast with a turbine housing for a turbocharger has pipe portions having exhaust gas flow paths and a plurality of ports adapted to receive an exhaust gas; flanges respectively extending from the ports; a converged portion connected to the pipe portions and adapted to c

An exhaust manifold integrally cast with a turbine housing for a turbocharger has pipe portions having exhaust gas flow paths and a plurality of ports adapted to receive an exhaust gas; flanges respectively extending from the ports; a converged portion connected to the pipe portions and adapted to converge the exhaust gas flow paths in the pipe portions; and a turbine housing integrally connected to the converged portion and having a circular exhaust gas flow path therein. The exhaust gas flow path in the converged portion is in a tangent direction relative to the circular exhaust gas flow path in the turbine housing. A neck portion that connects an outer surface of the turbine housing to an outer surface of the converged portion at a particular angle has a radius of curvature that is relative to the distance in a tangent direction of the exhaust gas flow path from the center of the turbine housing to the converged portion. Namely, the ratio of the radius of the curvature to the distance in the tangent direction of the exhaust gas flow path from the center of the turbine housing to the converged portion is 0.13 or more.

대표청구항 ▼

[ What is claimed is:] [1.]1. An exhaust manifold integrally cast with a turbine housing for a turbocharger comprising:pipe portions having exhaust gas flow paths and a plurality of ports adapted to receive an exhaust gas;flanges respectively extending from said ports;a converged portion connected t

[ What is claimed is:] [1.]1. An exhaust manifold integrally cast with a turbine housing for a turbocharger comprising:pipe portions having exhaust gas flow paths and a plurality of ports adapted to receive an exhaust gas;flanges respectively extending from said ports;a converged portion connected to said pipe portions and adapted to converge the exhaust gas flow paths in said pipe portions; anda turbine housing integrally connected to said converged portion and having a circular exhaust gas flow path therein,wherein the exhaust gas flow path in said converged portion is in a tangent direction relative to the circular exhaust gas flow path in said turbine housing,wherein a neck portion connects an outer surface of said turbine housing to an outer surface of said converged portion, andwherein a ratio of r:L is 0.13 or more,r being a radius of curvature of said neck portion, andL being a distance in a tangent direction of said exhaust gas flow path from a center of said turbine housing to a centerline of said converged portion.