Turbocharger with reduced coking

Details Turbocharger with reduced coking Turbocharger with reduced coking

2005-04-05

2005-04-05

Trieu, Thai-Ba (Department: 3748)

Pumps

Motor driven

Fluid motor

C060S602000, C415S111000, C415S112000, C428S315900

Reexamination Certificate

active

06874998

ABSTRACT:
A turbocharger including means for preventing or reducing coking, particularly following engine shutdown, without noticeably increasing weight or volume of the turbocharger. The turbocharger bearing housing (14) has defined therein a lubrication flow path for bearing lubricant and a lubricant drain gallery (40) below a shaft (20), and in accordance with the invention at least a portion of a wall (42) of the lubricant drain gallery (40) is coated with an oil repellant and/or heat insulating coating (44).

REFERENCES:
patent: 3845619 (1974-11-01), O'Neill
patent: 4364717 (1982-12-01), Schippers et al.
patent: 4776167 (1988-10-01), Kawamura
patent: 5998521 (1999-12-01), Fan et al.
patent: 6261678 (2001-07-01), von Fragstein et al.
patent: 20020047326 (2002-04-01), Higuchi
patent: 20020173431 (2002-11-01), Hirata
patent: 3235538 (1984-03-01), None

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