US3749065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration enrichment circuit for electronic fuel control systems
Assignee: Bendix Corp
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Filing: 1970-02-17
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Granted: 1973-07-31
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Expires: 1990-02-17
Abstract
Abstract An acceleration enrichment circuit is disclosed which is operative to sense a demand for engine acceleration and which subsequently lengthens the duration of the fuel injection command to reduce or eliminate response time largs. The circuit includes a first circuit to provide an immediate pulse of fuel to the injector group most recently energized and a second circuit to lengthen the injection commands to each injector for a period of time sufficient to accomplish the desired acceleration.
Inventors
- 👤 R Rothfusz
- 👤 J Nagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:07
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/10; F02D41/105
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
183 words
A fuel control for engines comprising: sensor means responsive to engine operating parameters operative to generate signals having variable characteristics indicative of the engine operating parameters; computation circuit means responsive to said sensor meaNs signals operative to generate a first output signal having a variable characteristic indicative of the engine demand for fuel and adapted to actuate injector valve means to control fuel delivery to the engine in accord with the output signal variable characteristic; means for generating a signal whose presence is indicative of a demand for engine acceleration and whose absence is indicative of a lack of a demand for engine acceleration; and acceleration circuit means mutually responsive to the acceleration signal and to selected variations in the first output signal variable characteristic operative to generate acceleration output signals having a variable characteristic which resembles the first output signal variable characteristic and which is independent of the characteristics of the acceleration signal including means to additively combine the first output signal variable characteristic and the acceleration output signal variable characteristic to form an injector valve means signal having a variable characteristic.
Claim 2
Dependent Claim
183 words
A fuel control for engines comprising: sensor means responsive to engine operating parameters operative to generate signals having variable characteristics indicative of the engine operating parameters; computation circuit means responsive to said sensor meaNs signals operative to generate a first output signal having a variable characteristic indicative of the engine demand for fuel and adapted to actuate injector valve means to control fuel delivery to the engine in accord with the output signal variable characteristic; means for generating a signal whose presence is indicative of a demand for engine acceleration and whose absence is indicative of a lack of a demand for engine acceleration; and acceleration circuit means mutually responsive to the acceleration signal and to selected variations in the first output signal variable characteristic operative to generate acceleration output signals having a variable characteristic which resembles the first output signal variable characteristic and which is independent of the characteristics of the acceleration signal including means to additively combine the first output signal variable characteristic and the acceleration output signal variable characteristic to form an injector valve means signal having a variable characteristic.
Claim 3
Dependent Claim
58 words
The system as claimed in claim 1 wherein said variable characteristics are variable time duration pulses and said acceleration circuit means are mutually responsive to the acceleration signal and the termination of said computation circuit means pulse to produce an acceleration output pulse whose origin substantially coincides in time with the termination of the computation circuit means pulse.
Claim 4
Dependent Claim
82 words
The system as claimed in claim 2 wherein said computation circuit means is adapted to sequentially actuate the injector valve means in a predetermined manner and including further a secondary circuit responsive to the acceleration signal and operative to produce an output signal having a predetermined duration and means for communicating said output signal to the computation circuit means whereby the most recently actuated injector valve means is a re-actuated for a period of time corresponding to said predetermined duration output signal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |