A turbocharger is provided and includes a compressor housing and a recirculation slit and a recirculation passage provided at an inlet of the compressor housing to enable air flowing into the compressor to be recirculated. A gas supply part supplies blow-by gas towards the inlet of the compressor housing to allow blow-by gas to be joined with air recirculated through the recirculation slit and the recirculation passage and to guide recirculating air towards a compressor wheel.
1. A turbocharger, comprising:
a compressor housing;
a recirculation slit and a recirculation passage provided at an inlet of the compressor housing to enable air flowing into the compressor to be recirculated; and
a gas supply part in which blow-by gas from an engine flows towards the inlet of the compressor housing to allow blow-by gas to be joined with air recirculated through the recirculation slit and the recirculation passage and to guide recirculating air towards a compressor wheel,
wherein the gas supply part includes a guide passage configured to guide a flow of the blow-by gas from the engine in a direction opposite to a flow direction of air discharged from the recirculation passage, and
wherein a guide protrusion, which guides air discharged through the recirculation passage and gas discharged through the guide passage to allow discharged air and gas to flow towards a center of the inlet of the compressor, is provided on a portion at which the recirculation passage and the guide passage intersect.
2. The turbocharger of claim 1 , wherein the gas supply part further includes:
a gas inlet through which blow-by gas is received;
and
a distribution passage configured to supply the blow-by gas supplied through the gas inlet, to the guide passage.
3. The turbocharger of claim 2 , wherein the recirculation passage is formed in a cylindrical shape surrounding a perimeter of the inlet of the compressor, and the guide passage is formed in a cylindrical shape facing the recirculation passage and forming a concentric axis therewith.
4. The turbocharger according to claim 3 , wherein the guide passage is formed in a conical cylinder shape with a diameter that gradually decreases towards the recirculation passage.
5. The turbocharger of claim 4 , wherein the recirculation passage is formed to have a cross-sectional shape in which an inner surface of the recirculation passage is gradually inclined toward a center of the inlet of the compressor along the guide passage.
6. The turbocharger of claim 3 , wherein the distribution passage is formed in a ring shape surrounding an outer side of the guide passage to be in communication with the gas inlet and to be in communication with the guide passage through a plurality of apertures.
7. The turbocharger of claim 1 , wherein the gas supply part and the guide protrusion are formed integrally on the compressor housing.
8. The turbocharger of claim 1 , wherein the gas supply part and the guide protrusion are formed separately to be coupled to the compressor housing.
9. A vehicle having a turbocharger, the turbocharger comprising,
a compressor housing;
a recirculation slit and a recirculation passage provided at an inlet of the compressor housing to enable air flowing into the compressor to be recirculated; and
a gas supply part in which blow-by gas from an engine flows towards the inlet of the compressor housing to allow blow-by gas to be joined with air recirculated through the recirculation slit and the recirculation passage and to guide recirculating air towards a compressor wheel,
wherein the gas supply part includes a guide passage configured to guide a flow of the blow-by gas from the engine in a direction opposite to a flow direction of air discharged from the recirculation passage, and
wherein a guide protrusion, which guides air discharged through the recirculation passage and gas discharged through the guide passage to allow discharged air and gas to flow towards a center of the inlet of the compressor, is provided on a portion at which the recirculation passage and the guide passage intersect.