GB1266803A - - Google Patents
Info
- Publication number
- GB1266803A GB1266803A GB1266803DA GB1266803A GB 1266803 A GB1266803 A GB 1266803A GB 1266803D A GB1266803D A GB 1266803DA GB 1266803 A GB1266803 A GB 1266803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- fuel
- release signal
- throttle
- flop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2403—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially up/down counters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
- F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
- F02D2700/02—Controlling by changing the air or fuel supply
- F02D2700/0217—Controlling by changing the air or fuel supply for mixture compressing engines using liquid fuel
- F02D2700/022—Controlling the air or the mixture supply as well as the fuel supply
- F02D2700/0223—Engines with fuel injection
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
1,266,803. Fuel injection systems. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES. Feb.6, 1970 [Feb. 14, 1969; April 28, 1969], No.5701/70. Heading G1N. [Also in Division F1] In an I.C. engine fuel injection control system, the quantity of fuel injected is determined by the position of an auxilliarly throttle member 8 positioned in the air intake manifold 1 upstream of the main throttle member 2. A rotary member 5, which may be driven at a constant speed or by the engine, provides a release signal, e.g. by a magnet 24 and sensor 23, for a predetermined constant fraction of rotation, this release signal then causing a generator 6 to provide a signal for energizing the electromagnet(s) 4 of the injection valve(s) 3. As shown, during the release signal a capacitor 19 is charged through a switch 21 by a battery 22, and at the end of the release signal the capacitor is discharged through a resistor varied by the auxilliarly throttle position and a threshold circuit 46 thus energizing the electromagnet 4 as long as the discharge current exceeds the threshold. In another embodiment, Figs. 3-5 (not shown), the release signal energizes a flip-flop (57) to provide an output signal whose duration is determined by comparing the signal on the wiper of a potentiometer positioned by the auxilliary throttle member with the feedback signal of a modulating member (50) actuated by the flip-flop (57). The output signal is then compared in an AND gate (65) with a signal whose duration is representative of that required to provide fuel during idling, thus providing a fuel inhibition facility. In a further embodiment, Figs. 6 and 7 (not shown), the release signal is applied to one input of a flip-flop (103) whose other input is connected to the output of a read-out device (91) and decoding member (93). The read-out device is supplied with the number of counts stored in a read-in device (90) during a previous release signal this number of counts being determined by the position of the auxilliary throttle. The number of counts in (91) is then reduced to zero at a constant frequency, an output signal being provided by the flip-flop 103 during this time. The output pulse may again be compared with the idling value pulse. The energizing pulse duration may be increased during starting and the fuel pressure may be adapted to the pressure between the two throttle members 2, 8 to adapt the fuel-flow to conditions of acceleration.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6903791A FR2032021A5 (en) | 1969-02-14 | 1969-02-14 | |
FR6913514A FR2041532A6 (en) | 1969-04-28 | 1969-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1266803A true GB1266803A (en) | 1972-03-15 |
Family
ID=26214843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1266803D Expired GB1266803A (en) | 1969-02-14 | 1970-02-06 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4943657B1 (en) |
DE (1) | DE2006651B2 (en) |
ES (1) | ES376338A1 (en) |
GB (1) | GB1266803A (en) |
SE (1) | SE351898B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2738992A1 (en) * | 1977-08-30 | 1979-03-15 | Volkswagenwerk Ag | FUEL INJECTOR |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1422775A (en) * | 1972-02-25 | 1976-01-28 | Lucas Electrical Co Ltd | Fuel injection systems |
IT1021083B (en) * | 1974-07-16 | 1978-01-30 | Alfa Romeo Spa | ELECTRONIC INDIRECT PETROL INJECTION SYSTEM FOR OTTO CYCLE ENGINES |
DE2551681C2 (en) * | 1975-11-18 | 1986-10-02 | Robert Bosch Gmbh, 7000 Stuttgart | Electrically controlled fuel injection system for internal combustion engines |
-
1970
- 1970-01-14 SE SE42970A patent/SE351898B/xx unknown
- 1970-01-28 ES ES376338A patent/ES376338A1/en not_active Expired
- 1970-02-06 GB GB1266803D patent/GB1266803A/en not_active Expired
- 1970-02-13 DE DE19702006651 patent/DE2006651B2/en not_active Ceased
- 1970-02-14 JP JP1305270A patent/JPS4943657B1/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2738992A1 (en) * | 1977-08-30 | 1979-03-15 | Volkswagenwerk Ag | FUEL INJECTOR |
Also Published As
Publication number | Publication date |
---|---|
SE351898B (en) | 1972-12-11 |
ES376338A1 (en) | 1972-09-01 |
DE2006651B2 (en) | 1976-10-28 |
JPS4943657B1 (en) | 1974-11-22 |
DE2006651A1 (en) | 1971-01-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |