US4586878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerating means and method for turbocharger
Assignee: Individual
•
Filing: 1984-07-20
•
Granted: 1986-05-06
•
Expires: 2004-07-20
Abstract
Abstract Turbocharger acceleration is enhanced by a single element, multi-vane nozzle ring rotatably mounted to the turbine wheel or housing and optimizing exhaust gas flow direction into the turbine wheel at engine idle conditions and other operating conditions, with means to control rotation and speed of the nozzle ring to provide optimum acceleration and cruise conditions by the use of a rotating turbine nozzle ring.
Inventors
- 👤 Eugene S. Witchger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A turbocharger comprising: a housing having an engine exhaust input; shaft means having a longitudinal axis and rotatable in said housing on said axis; a compressor wheel and turbine wheel secrued to said shaft means, said turbine wheel being in communication with said exhaust whereby the compressor wheel is driven by the turbine wheel on said axis; nozzle ring means rotatably mounted in said housing for rotation on an axis, said nozzle ring means having a plurality of vanes disposed in the exhaust gas flow path from the exhaust input of said housing means to said turbine wheel; and brake means on said housing and operable, when actuated, to inhibit rotation of said nozzle ring means.
Claim 2
Dependent Claim
116 words
A turbocharger comprising: a housing having an engine exhaust input; shaft means having a longitudinal axis and rotatable in said housing on said axis; a compressor wheel and turbine wheel secrued to said shaft means, said turbine wheel being in communication with said exhaust whereby the compressor wheel is driven by the turbine wheel on said axis; nozzle ring means rotatably mounted in said housing for rotation on an axis, said nozzle ring means having a plurality of vanes disposed in the exhaust gas flow path from the exhaust input of said housing means to said turbine wheel; and brake means on said housing and operable, when actuated, to inhibit rotation of said nozzle ring means.
Claim 3
Dependent Claim
27 words
The turbocharger of claim 1 wherein: said brake means include a brake engageable with said nozzle ring means to prevent rotation thereof upon actuation of said brake.
Claim 4
Dependent Claim
24 words
The turbo charger of claim 2 wherein: said brake means are variably engageable to control nozzle ring means speed independent of turbine wheel speed.
References Cited (Backward Citations)
US856204A
Cited
US1097729A
Cited
AT121724B
Cited
US3669562A
Cited
US3936241A
Cited
DE2843202A1
Cited
US4455121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |