Ceramic Turbocharger Rotor

Turbochargers adopting ceramic turbine rotor s ctr have been successfully introduced for the purpose of improving vehicle acceleration response the first ceramic turbocharger rotor made up o f.

Ceramic turbocharger rotor.

In a method of manufacturing a ceramic turbo charger rotor wherein an inner race of an angular ball bearing and a spacer are integrally secured to a journal portion of a metal shaft for connecting a ceramic turbine rotor and a metal compressor rotor the inner race and the spacer are inserted to the journal portion of the metal shaft under a condition such that a tensile load is applied to. Ceramic turbocharger rotor download pdf info publication number ep0376092b1. A ceramic turbo charger rotor is prepared the same as the rotors of sample numbers 1 7 in table 1 in material and size except the pressure insertion clearance of the ball bearing inner race at the compressor side is arranged to be 2 μm the pressure insertion clearance of the spacer at the turbine side is arranged to be 6 μm and the pressure insertion length l of the spacer to the. A nickel plate 5 is brazed to a shaf.

This turbocharger is modified to incorporate a 4 6 inch diameter ceramic turbine rotor pressureless sintered silicon nitride on the hot end. Ep0376092b1 ep19890123232 ep89123232a ep0376092b1 ep 0376092 b1 ep0376092 b1 ep 0376092b1 ep 19890123232 ep19890123232 ep 19890123232 ep 89123232 a ep89123232 a ep 89123232a ep 0376092 b1 ep0376092 b1 ep 0376092b1 authority ep european patent office prior art keywords shaft brazed joint metal joint layer brazing prior. The ceramic turbocharger rotor 1 produced under the same condition as the examples nos. A nickel plate 5 is brazed to a shaft of a ceramic turbine wheel 3 by way of a brazed joint layer 13 of the composition consisting of 20 to 70 wt of silver 1 to 20 wt of palladium 10 to 60 wt of nickel and 1 to 10 wt of titanium.

For continuous 100 hours. By this test no defect or damage was found in the brazed joint portion of the turbocharger rotor 1. 1 7 and actually installed on an engine was tested for the durability under the condition that it was operated at the speed of 120 000 rpm and in the exhaust gases of 950 c. Development of ceramic turbocharger rotors for high temperature use title.

Development of ceramic turbocharger rotors for high temperature use full record. Performance of a ceramic rotor in a cummins t46 turbocharger 840014 this paper documents the successful operation of a modified cummins t46 turbocharger with a ceramic rotor.