초록 ▼

An exhaust gas turbine portion of a vehicle engine turbocharger is provided with at least one variable guide-blade cascade with guide blades in a nozzle opening to the turbocharger rotor for effectively changing the cross section of the exhaust flow to the rotor wherein the angle of the guide blades

An exhaust gas turbine portion of a vehicle engine turbocharger is provided with at least one variable guide-blade cascade with guide blades in a nozzle opening to the turbocharger rotor for effectively changing the cross section of the exhaust flow to the rotor wherein the angle of the guide blades is selectively settable by an adjusting device. The width dimension of the gap between the ends of the guide-blade cascade and the casing wall defining the nozzle is adjustable between a substantially zero gap dimension and a maximum gap dimension.

대표청구항 ▼

[ We claim:] [1.]1. In an turbocharger for an internal combustion engine having a housing defining an exhaust gas turbine portion including a rotor and defining a surrounding exhaust flow inlet duct with an annular nozzle opening therefrom to the rotor for directing exhaust gas flow to the rotor and

[ We claim:] [1.]1. In an turbocharger for an internal combustion engine having a housing defining an exhaust gas turbine portion including a rotor and defining a surrounding exhaust flow inlet duct with an annular nozzle opening therefrom to the rotor for directing exhaust gas flow to the rotor and having a guide-blade cascade of guide blades with their angular orientation relative to the flow direction through the nozzle opening being selectively settable by means of a guide-blade adjusting device for varying the effective flow cross-section of the nozzle opening, characterized by a gap setting device (14, 15, 16, 17) for selectively changing dimension of the gap at the ends of the guide-blade cascade (11) and the casing (10) between a substantially zero gap dimension and a maximum gap dimension.