US4729354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply control system for use in engine
Assignee: Mazda Motor Corp
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Filing: 1987-03-02
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Granted: 1988-03-08
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Expires: 2007-03-02
Abstract
Abstract A fuel supply control system for use in an engine includes a feeder for supplying fuel to the engine in an amount suitable for operating conditions of the engine, a detector for detecting a decelerating state of the engine, and a correcting device for, upon detecting the deceleration, increasing a rate of fuel supply so that combustion may be stabilized to prevent car-bucking. The system further includes a brake detector for detecting an operative state of a brake device of the vehicle, and a limiter for, upon operation of the brake device, limiting the increase of fuel supply whereby the fuel consumption efficiency can be improved. During operation of the break device, car-bucking is restricted by a braking force so that substantially no vibration is transmitted to a driver.
Inventors
- 👤 Hideki Tominaga
- 👤 Kazuya Takaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:51
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/12; B; B60; B60W; B60W10/00; B60W10/04; B60W10/18; B60W30/00; B60W30/18; B60W30/1819
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
104 words
A fuel supply control system for use in an engine comprising: means for supplying fuel to the engine in an amount suitable for operating conditions of the engine; means for detecting a decelerating state of the engine; means for increasing a rate of fuel supply by said supply means when the decelerating state is detected by said deceleration detecting means; means for detecting an operative state of a brake device mounted on a vehicle; and means for limiting said increase in rate of fuel supply by said increasing means when the operative state of the brake device is detected by said brake detecting means.
Claim 2
Dependent Claim
104 words
A fuel supply control system for use in an engine comprising: means for supplying fuel to the engine in an amount suitable for operating conditions of the engine; means for detecting a decelerating state of the engine; means for increasing a rate of fuel supply by said supply means when the decelerating state is detected by said deceleration detecting means; means for detecting an operative state of a brake device mounted on a vehicle; and means for limiting said increase in rate of fuel supply by said increasing means when the operative state of the brake device is detected by said brake detecting means.
Claim 3
Dependent Claim
47 words
A system as claimed in claim 1, wherein said fuel supply increasing means includes means for detecting an engagement between an output shaft of the engine and a driving wheel of the vehicle and for limiting said increase in rate of fuel supply when disengagement is detected.
Claim 4
Dependent Claim
45 words
A system as claimed in claim 1, wherein said fuel supply increasing means includes means for detecting the number of revolutions of the engine and for limiting said increase in rate of fuel supply when the number of revolutions is higher than a predetermined value.
Claim 5
Dependent Claim
45 words
A system as claimed in claim 1, wherein said fuel supply increasing means includes means for measuring a temperature of cooling water circulating in the engine and for limiting said increase in rate of fuel supply when the temperature is higher than a predetermined value.
Claim 6
Dependent Claim
156 words
A fuel supply control system for use in an engine comprising: means for supplying fuel to the engine in an amount suitable for operating conditions of the engine; means for detecting a fully closed state of a throttle valve disposed in an intake pipe of the engine; means for detecting an engagement between an output shaft of the engine and a driving wheel of a vehicle; means for increasing a rate of fuel supply by said supply means when said throttle valve is found to be fully closed by said closed state detecting means and when said engagement detecting means detects the engaging state between said output shaft and said driving wheel; means for detecting an operative state of a brake device mounted on the vehicle; and means for limiting said increase in rate of fuel supply by said increasing means when the operative state of the brake device is detected by said brake detecting means.
Claim 7
Dependent Claim
156 words
A fuel supply control system for use in an engine comprising: means for supplying fuel to the engine in an amount suitable for operating conditions of the engine; means for detecting a fully closed state of a throttle valve disposed in an intake pipe of the engine; means for detecting an engagement between an output shaft of the engine and a driving wheel of a vehicle; means for increasing a rate of fuel supply by said supply means when said throttle valve is found to be fully closed by said closed state detecting means and when said engagement detecting means detects the engaging state between said output shaft and said driving wheel; means for detecting an operative state of a brake device mounted on the vehicle; and means for limiting said increase in rate of fuel supply by said increasing means when the operative state of the brake device is detected by said brake detecting means.
Claim 8
Dependent Claim
22 words
A system as claimed in claim 5, wherein said closed state detecting means comprises an idle switch connected to said throttle valve.
Claim 9
Dependent Claim
61 words
A system as claimed in claim 5, further comprising means for measuring a flow rate of suction air and for detecting a deceleration of the vehicle based on a reduction of the flow rate of the suction air, and wherein said fuel supply increasing means includes means for adjusting a rate of increase in cooperation with said flow rate measuring means.
Claim 10
Dependent Claim
45 words
A system as claimed in claim 5, wherein said fuel supply increasing means includes means for detecting the number of revolutions of the engine and for limiting said increase in rate of fuel supply when the number of revolutions is higher than a predetermined value.
Claim 11
Dependent Claim
45 words
A system as claimed in claim 5, wherein said fuel supply increasing means includes means for measuring a temperature of cooling water circulating in the engine and for limiting said increase in rate of fuel supply when the temperature is higher than a predetermined value.
Claim 12
Dependent Claim
48 words
A system as claimed in claim 5, wherein said fuel supply increasing means includes means for checking the state of said supply means and for limiting said increase in rate of fuel supply when said supply means has already carried out the increase other than by the deceleration.
References Cited (Backward Citations)
JPS5218535A
Cited
US4305365A
Cited
US4445603A
Cited
JPS58217736A
Cited
JPS58222930A
Cited
JPS59200026A
Cited
US4640243A
Cited
US4644923A
Cited
US4628883A
Cited
US4671240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |