초록 ▼

A turbocharger for an internal combustion engine comprises an air intake, a compressor, a compressor housing (2), a plurality of bypass channels (1) formed in the compressor housing (2) providing a short cut to air from the air intake into the turbine, and elements for controlling the extent to whic

A turbocharger for an internal combustion engine comprises an air intake, a compressor, a compressor housing (2), a plurality of bypass channels (1) formed in the compressor housing (2) providing a short cut to air from the air intake into the turbine, and elements for controlling the extent to which the bypass channels are open, for example by a slidable or rotatable sleeve (5) having a pattern of slots (6) corresponding to the pattern of channels. This results in increased stability and overall efficiency.

대표청구항 ▼

1. A turbocharger for an internal combustion engine, he turbocharger comprising an air intake (8), a compressor housing (2), a plurality of bypass channels (1) formed in the compressor housing (2) providing a short cut to air from the air intake (8) through the housing 2) and means or controlling ai

1. A turbocharger for an internal combustion engine, he turbocharger comprising an air intake (8), a compressor housing (2), a plurality of bypass channels (1) formed in the compressor housing (2) providing a short cut to air from the air intake (8) through the housing 2) and means or controlling air flow through the bypass channels (1). 2. A turbocharger according to claim 1 wherein the means for controlling air flow through the repass channels (1) comprises a movable sleeve (5) having a pattern of openings (6). 3. A turbocharger according to claim 2 wherein the pattern of openings (6) in the sleave (5) corresponds to the pattern of channels (1) in the housing (2). 4. A turbo charger according to claim 1, wherein the sleeve (5) is movable axially to control air flow through the channels (1). 5. A turbocharger according to claim 1, wherein the sleeve (5) is slidable in a rotating motion to effect control of air flow through the channels (1). 6. A turbocharger according to claim 1 wherein the channels (1) are formed in a circular pattern. 7. A turbocharger according to claim 1 wherein the channels (1) are formed in an axial pattern. 8. A turbocharger according to claim 1 wherein the air flow control means (5) is operated electronically, under control of a microprocessor to match the operating conditions of the vehicle engine. 9. A turbocharger according to claim 1 wherein the channels (1) are arranged so that the leading channel is opened first and the or each other channels are opened in sequence. 10. A turbocharger according to claim 1 wherein the channels (1) are formed with generally circular openings. 11. A turbocharger according to claim 1 wherein the channels (1) are formed with generally elongated openings. 12. A turbocharger according to claim 1 wherein the channels (1) are circumferential. 13. A turbocharger according to claim 1 wherein the channels (1) subtend an acute angle to the axis of the compressor housing (2).