US5094208A
Expired / Lapsed
US
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Fuel control system
Assignee: Robert Bosch GmbH
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Filing: 1988-12-10
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Granted: 1992-03-10
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Expires: 2008-12-10
Abstract
Abstract An internal combustion engine 30 capable of operating on petrol an/or methanol has an adaptive control system responsive to a lambda-sensor (23), a limiter device (21) and a multiplier device (22) which, in response to the richness of the air/fuel mixture, produce a signal (FMCOR) for influencing the fuel injection times (t i ).
Inventors
- 👤 Klaus Adam
- 👤 Heinz Bohmler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:10
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/0025; F02D19/00; F02D19/06; F02D19/08; F02B; F02B1/00; F02B1/02; F02D19/082; F02D19/084; F02D19/085; F02D19/087; F02D19/088; F02D2200/00; F02D2200/02; F02D2200/06; F02D2200/0611; F02D2200/0612; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
55 words
An internal combustion engine capable of operating on different kinds of fuel, the engine comprising: sensor means for producing a signal representative of the richness of the air/fuel mixture; processing means for processing said signal to influence an operating parameter of the engine; and, said processing means includes a limiter device and a multiplier device.
Claim 2
Dependent Claim
55 words
An internal combustion engine capable of operating on different kinds of fuel, the engine comprising: sensor means for producing a signal representative of the richness of the air/fuel mixture; processing means for processing said signal to influence an operating parameter of the engine; and, said processing means includes a limiter device and a multiplier device.
Claim 3
Dependent Claim
31 words
The engine of claim 1, comprising: a loop for providing an adaptive system for controlling the air/fuel supply ratio; and, said processing means producing a feedback signal (FMCOR) in said loop.
Claim 4
Dependent Claim
17 words
The engine of claim 2, wherein said processing means controls the fuel injection times of the engine.
Claim 5
Dependent Claim
39 words
The engine of claim 1, wherein the fuel has a methanol content, the engine further comprising: means for calculating the methanol content of the fuel; and, means for controlling the spark timing in dependence on the calculated methanol content.
Claim 6
Dependent Claim
20 words
The engine of claim 1, wherein said sensor means includes a lambda probe arranged in the exhaust of the engine.
Claim 7
Dependent Claim
25 words
The engine of claim 1, wherein the different kinds of fuel include a fuel selected from methanol, petrol and a mixture of methanol and petrol.
Claim 8
Dependent Claim
24 words
The engine of claim 1, wherein said limiter device and the multiplier device are connected to the output of an integrator for adaptive correction.
Claim 9
Dependent Claim
22 words
The engine of claim 7, wherein the output of the limiter device is fed back to said integrator for resetting said integrator.
Claim 10
Dependent Claim
58 words
A control arrangement for an internal combustion engine capable of operating on different kinds of fuel, the control arrangement comprising: sensor means for producing a signal representative of the richness of the air/fuel mixture; processing means for processing said signal to influence an operating parameter of the engine; and, said processing means including limiter means and multiplier means.
Claim 11
Dependent Claim
58 words
A control arrangement for an internal combustion engine capable of operating on different kinds of fuel, the control arrangement comprising: sensor means for producing a signal representative of the richness of the air/fuel mixture; processing means for processing said signal to influence an operating parameter of the engine; and, said processing means including limiter means and multiplier means.
Claim 12
Dependent Claim
26 words
The control arrangement of claim 9, wherein the different kinds of fuel include a fuel selected from methanol, petrol and a mixture of methanol and petrol.
Claim 13
Dependent Claim
33 words
The control arrangement of claim 9, further comprising: a loop for providing an adaptive system for controlling the air/fuel supply ratio; and, said processing means producing a feedback signal (FMCOR) in said loop.
Claim 14
Dependent Claim
18 words
The control arrangement of claim 11, wherein said processing means controls the fuel injection times of the engine.
Claim 15
Dependent Claim
31 words
The control arrangement of claim 11, further comprising: means for calculating the methanol content of the fuel; and, means for controlling the spark timing in dependence on the calculated methanol content.
Claim 16
Dependent Claim
21 words
The control arrangement of claim 9, wherein said sensor means includes a lambda probe arranged in the exhaust of the engine.
Claim 17
Dependent Claim
25 words
The control arrangement of claim 9, wherein said limiter means and said multiplier means are connected to the output of an integrator for adaptive correction.
Claim 18
Dependent Claim
23 words
The control arrangement of claim 15, wherein the output of said limiter means is fed back to said integrator for resetting said integrator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |