US3745982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control means for an internal combustion engine
Assignee: Denso Corp
•
Filing: 1971-07-01
•
Granted: 1973-07-17
•
Expires: 1991-07-01
Abstract
Abstract In an internal combustion engine including a centrifugal or fluid type mechanical governor for normal engine operation, fuel control means additionally comprises, for constant speed operation, electrical control means for comparing the actual and reference engine speeds and producing an output which is used to control an accelerator mechanism of the engine.
Inventors
- 👤 T Suda
- 👤 S Nagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:18
CPC Classifications
F; F02; F02D; F02D1/00; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284; F02D2700/0289
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
363 words
A fuel control for an internal combustion engine having a throttle valve for use with a fuel tank comprising: a fluid tank, detector means for generating a signal which varies as a function of engine speed, electrical knob means for setting a desired speed and haviNg a position for manually controlling fuel, electric control means connected to said detector means and knob means and having a pair of output terminals, said control means comparing the actual engine speed as indicated by said engine speed signal and the desired engine speed as indicated by the setting of said electrical knob means and generating an output signal on one of said output terminals when the desired engine speed exceeds the actual engine speed and on the other output terminal when the actual engine speed exceeds the desired engine speed, a diaphragm chamber having a member movable as a function of the fluid pressure therein, first conduit means including pump means and a first electric valve means and connected between said fluid tank and said diaphragm chamber for supplying fluid from said fluid tank to said diaphragm chamber, said first electric valve means connected to a terminal of said electric control means and opening said conduit when an output signal is on that terminal, second conduit means including second electric valve means and connected between said fluid tank and said diaphragm chamber, said second conduit means venting the fluid from said diaphragm chamber to said tank, said second electric valve means being connected to the terminal of said electric control means other than the terminal connected to said first valve means and opening said second conduit when an output signal is on that terminal, an auxiliary tank having a vent hole, a conduit connected to said diaphragm chamber, and third electric solenoid valve means, said auxiliary tank introducing the fluid from said diaphragm chamber thereto, said third electric solenoid valve opening its conduit when said knob means is in said manually controlling means, and a link member connected between said throttle valve and said movable member of said diaphragm to control said throttle valve of the engine in response to the movement of said movable member.
Claim 2
Dependent Claim
363 words
A fuel control for an internal combustion engine having a throttle valve for use with a fuel tank comprising: a fluid tank, detector means for generating a signal which varies as a function of engine speed, electrical knob means for setting a desired speed and haviNg a position for manually controlling fuel, electric control means connected to said detector means and knob means and having a pair of output terminals, said control means comparing the actual engine speed as indicated by said engine speed signal and the desired engine speed as indicated by the setting of said electrical knob means and generating an output signal on one of said output terminals when the desired engine speed exceeds the actual engine speed and on the other output terminal when the actual engine speed exceeds the desired engine speed, a diaphragm chamber having a member movable as a function of the fluid pressure therein, first conduit means including pump means and a first electric valve means and connected between said fluid tank and said diaphragm chamber for supplying fluid from said fluid tank to said diaphragm chamber, said first electric valve means connected to a terminal of said electric control means and opening said conduit when an output signal is on that terminal, second conduit means including second electric valve means and connected between said fluid tank and said diaphragm chamber, said second conduit means venting the fluid from said diaphragm chamber to said tank, said second electric valve means being connected to the terminal of said electric control means other than the terminal connected to said first valve means and opening said second conduit when an output signal is on that terminal, an auxiliary tank having a vent hole, a conduit connected to said diaphragm chamber, and third electric solenoid valve means, said auxiliary tank introducing the fluid from said diaphragm chamber thereto, said third electric solenoid valve opening its conduit when said knob means is in said manually controlling means, and a link member connected between said throttle valve and said movable member of said diaphragm to control said throttle valve of the engine in response to the movement of said movable member.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |