US4586471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control mechanism for internal combustion engine
Assignee: Isuzu Motors Ltd
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Filing: 1984-12-04
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Granted: 1986-05-06
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Expires: 2004-12-04
Abstract
Abstract An internal combustion engine fuel control system including a fuel supply means for controlling the supply of fuel to an internal combustion engine, a first operator mechanically coupled to the control means and operative to adjust the level of fuel supplied thereby, a second operator, and a coupling mechanically coupling the first and second operators so as to alternatively provide either common or independent movement thereof. A sensor detects the position of a manually controlled accelerator pedal for the engine and a control mechanism responsive to the sensor provides an output dependent upon the accelerator position sensed thereby. Responsive to the output of the control mechanism is a driver that produces movement of the second operator.
Inventors
- 👤 Osamu Horada
- 👤 Yasusuke Anda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:19
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; B; B60; B60K; B60K26/00; B60K26/04; F02D2011/101; F02D2011/103
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
173 words
An internal combustion engine fuel control system comprising: fuel supply means for controlling the supply of fuel to an internal combustion engine; a first operator means mechanically coupled to said supply means and operative to adjust the level of fuel supplied thereby; a second operator means; sensor means for sensing the position of a manually actuated accelerator pedal for the engine; control means responsive to said sensor means and providing an output dependent upon the accelerator position sensed thereby; driving means responsive to said control means and producing a degree of movement of said second operator means dependent upon said output of said control means; and coupling means mechanically coupling said first and second operator means so as to alternatively provide either common or independent movement thereof; said coupling means permitting a predetermined degree of independent movement of said second operator means in response to initial actuation of the pedal and coupling said first and second operator means so as to produce common movement thereof in response to further actuation of the pedal.
Claim 2
Dependent Claim
173 words
An internal combustion engine fuel control system comprising: fuel supply means for controlling the supply of fuel to an internal combustion engine; a first operator means mechanically coupled to said supply means and operative to adjust the level of fuel supplied thereby; a second operator means; sensor means for sensing the position of a manually actuated accelerator pedal for the engine; control means responsive to said sensor means and providing an output dependent upon the accelerator position sensed thereby; driving means responsive to said control means and producing a degree of movement of said second operator means dependent upon said output of said control means; and coupling means mechanically coupling said first and second operator means so as to alternatively provide either common or independent movement thereof; said coupling means permitting a predetermined degree of independent movement of said second operator means in response to initial actuation of the pedal and coupling said first and second operator means so as to produce common movement thereof in response to further actuation of the pedal.
Claim 3
Dependent Claim
26 words
A system according to claim 1 wherein said fuel supply means comprises a rotatable shaft, and said first operator means is fixed to for rotation therewith.
Claim 4
Dependent Claim
45 words
A system according to claim 2 wherein said first operator comprises a first lever having one end fixed to said shaft, and said second operator comprises a second lever having one end coupled to an opposite end of said first lever by said coupling means.
Claim 5
Dependent Claim
68 words
A system according to claim 3 wherein said coupling means is adapted to permit one sense of pivotal movement by said first lever independently of said second lever and to produce said movement of said first lever in response to pivotal movement of said one sense by said second lever, and including bias means inducing pivotal movement of said first lever in a sense opposite said one sense.
Claim 6
Dependent Claim
23 words
A system according to claim 4 wherein an opposite end of said second lever is freely mounted for pivotal movement on said shaft.
Claim 7
Dependent Claim
49 words
A system according to claim 5 wherein said coupling comprises an abutment surface on said one end of said second lever, said abutment surface shaped and arranged to engage said opposite end of said first lever in response to pivotal movement of said one sense by said second lever.
Claim 8
Dependent Claim
30 words
A system according to claim 6 wherein said coupling comprises adjustment means manually adjustable to vary the spacing between said abutment surface and said opposite end of said first lever.
Claim 9
Dependent Claim
14 words
A system according to claim 7 wherein said adjustment means comprises a threaded coupling.
Claim 10
Dependent Claim
22 words
A system according to claim 8 wherein said threaded coupling couples said abutment surface to said one end of said second lever.
Claim 11
Dependent Claim
34 words
A system according to claim 3 wherein said drive means comprises an electrical stepping motor responsive to said control means and operatively coupled to said second lever so as to produce pivotal movement thereof.
Claim 12
Dependent Claim
68 words
A system according to claim 10 wherein said coupling means is adapted to permit one sense of pivotal movement by said first lever independently of said second lever and to produce said movement of said first lever in response to pivotal movement of said one sense by said second lever, and including bias means inducing pivotal movement of said first lever in a sense opposite said one sense.
Claim 13
Dependent Claim
23 words
A system according to claim 11 wherein an opposite end of said second lever is freely mounted for pivotal movement on said shaft.
Claim 14
Dependent Claim
49 words
A system according to claim 12 wherein said coupling comprises an abutment surface on said one end of said second lever, said abutment surface shaped and arranged to engage said opposite end of said first lever in response to pivotal movement of said one sense by said second lever.
Claim 15
Dependent Claim
30 words
A system according to claim 13 wherein said coupling comprises adjustment means manually adjustable to vary the spacing between said abutment surface and said opposite end of said first lever.
Claim 16
Dependent Claim
14 words
A system according to claim 14 wherein said adjustment means comprises a threaded coupling.
Claim 17
Dependent Claim
21 words
A system according to claim 10 wherein said control means comprises memory means for storing information received from said sensor means.
Claim 18
Dependent Claim
68 words
A system according to claim 16 wherein said coupling means is adapted to permit one sense of pivotal movement by said first lever independently of said second lever and to produce said movement of said first lever in response to pivotal movement of said one sense by said second lever, and including bias means inducing pivotal movement of said first lever in a sense opposite said one sense.
Claim 19
Dependent Claim
23 words
A system according to claim 17 wherein an opposite end of said second lever is freely mounted for pivotal movement on said shaft.
Claim 20
Dependent Claim
72 words
A system according to claim 18 wherein said coupling comprises an abutment surface on said one end of said second lever, said abutment surface shaped and arranged to engage said opposite end of said first lever in response to pivotal movement of said one sense by said second lever, said coupling comprises adjustment means manually adjustable to vary the spacing between said abutment surface and said opposite end of said first lever.
Claim 21
Dependent Claim
62 words
A system according to claim 3 wherein said second lever comprises a cam surface moved during said pivotal movement of said second lever; and including a cam follower means and a switch means responsive thereto, said cam follower shaped and arranged to actuate said switch means in response to movement of said second lever into either of two oppositely directed angular positions.
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) | 1989-05-05 | 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 |