US4615172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for regenerating the exhaust-gas particle filter of internal-combustion engines
Assignee: BBC BROWN BOVERI Ltd
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Filing: 1985-02-19
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Granted: 1986-10-07
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Expires: 2005-02-19
Abstract
Abstract A process for continuous regeneration of an exhaust-gas filter of an internal combustion engine having a supercharger unit is described. Operating parameters of the engine are compared to pre-set values in a control device to adjust the position of a throttle flap valve preceding the supercharger unit in order to maintain a high temperature on the exhaust-gas filter.
Inventors
- 👤 Andreas Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:26
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/0002; F02D41/0007; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/023; F01N3/031; F01N9/00; F01N9/002; F02B; F02B33/00; F02B33/32; F02B33/42; F02B37/00; F02B37/12; F02D41/02; F02D41/021; F02D41/0235; F02D41/027; F02D41/029; F01N2340/00; F01N2340/06; F01N2410/00; F01N2410/10; F02D2200/00; F02D2200/02; F02D2200/04; F02D2200/0414; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A process for regenerating an exhaust-gas particle filter of an internal-combustion engine of the type including a supercharging unit with a preceding throttle valve, an exhaust-gas particle filter located on a high-pressure side of the supercharging unit, a starting valve, a waste gate, and an exhaust-gas return valve, comprising the steps of: comparing the parameters of engine speed, engine torque, supercharging pressure, supercharging temperature, exhaust-gas pressure in front of the exhaust-gas particle filter, oxygen concentration, and pressure drop across the exhaust-gas particle filter to pre-set values of said parameters; adjusting the throttle valve to a pre-set position to cause a rapid temperature rise in said supercharger unit; and adjusting said throttle valve as a function of said comparing of said parameters to maintain a burn-off temperature on said exhaust-gas particle filter so that regeneration of said exhaust-gas particle filter is continous.
Claim 2
Dependent Claim
141 words
A process for regenerating an exhaust-gas particle filter of an internal-combustion engine of the type including a supercharging unit with a preceding throttle valve, an exhaust-gas particle filter located on a high-pressure side of the supercharging unit, a starting valve, a waste gate, and an exhaust-gas return valve, comprising the steps of: comparing the parameters of engine speed, engine torque, supercharging pressure, supercharging temperature, exhaust-gas pressure in front of the exhaust-gas particle filter, oxygen concentration, and pressure drop across the exhaust-gas particle filter to pre-set values of said parameters; adjusting the throttle valve to a pre-set position to cause a rapid temperature rise in said supercharger unit; and adjusting said throttle valve as a function of said comparing of said parameters to maintain a burn-off temperature on said exhaust-gas particle filter so that regeneration of said exhaust-gas particle filter is continous.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |