Turbocharger having nozzle ring locating pin and an integrated locator and heat shield
DRIVE
January 26, 2011
A turbocharger with a variable nozzle includes a pin (220) mounted in the center housing (150) and extending axially therefrom and engaged in a hole in the nozzle ring (170) to orient the nozzle ring rotationally relative to the center housing. A portion of a length of the pin has a substantially greater compliance than the remainder of the length such that the pin has a flexible tip that engages the hole in the nozzle ring. The flexible tip reduces constraint of thermal deformation of the nozzle ring. The pin portion of greater compliance can be a section of the tube that is slit and expanded. The turbocharger can also include a one-piece locator and heat shield (190) having a locating portion abutting the center housing and the nozzle ring for radially locating the nozzle ring relative to the center housing, and having a shield portion shielding the center housing (150) from hot exhaust gas.
Discussion in the ATmosphere