GB1445709A - Electrically controlled fuel injection systems for internal combustion engines - Google Patents
Electrically controlled fuel injection systems for internal combustion enginesInfo
- Publication number
- GB1445709A GB1445709A GB4086073A GB4086073A GB1445709A GB 1445709 A GB1445709 A GB 1445709A GB 4086073 A GB4086073 A GB 4086073A GB 4086073 A GB4086073 A GB 4086073A GB 1445709 A GB1445709 A GB 1445709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- conductive
- voltage
- pulse
- capacitor
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
-
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/503—Battery correction, i.e. corrections as a function of the state of the battery, its output or its type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (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)
- Ignition Installations For Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
1445709 Transistor pulse circuits ROBERT BOSCH GmbH 30 Aug 1973 [31 Aug 1972] 40860/73 Heading H3T [Also in Division G3] In/an I.C. engine electronic fuel injection system (see Division G3) injection valves opening pulses are provided, via a power stage, by a monostable multivibrator 23 triggered in synchronism with engine rotation by a switch 30, a pulse-shaper 21 and a frequency divider 22. The multivibrator 23 includes a timing capacitor C which is charged with constant current Ia from a source A, Fig. 4 (not shown), over a fixed angle of crank-shaft rotation. The transistors T1 and T11 are blocked during the charging period whereas the transistors T2 and T12 are conductive, the transistor T4 being maintained in its non-conductive state by way of transistor T3 which is then conductive. This state is ensured by the control of the transistor T3 by means of the switching voltage 80 from divider 22 and thus prevents the charging operation from being terminated prematurely by any voltage surges on line 35. The charging operation is terminated only when voltage 80 jumps to zero. The differentiating capacitor 87 then transmits a negative pulse k to the base of T1 which becomes conductive. The second switching voltage 81 from divider 22 at the same time blocks source A and the charge on capacitor C blocks the transistors T2 and T12 so that transistor T3 becomes non-conductive and T4 conductive. During the discharge of C which then commences, the source E of discharge current, Fig. 5 (not shown), supplies a constant discharge current Ie which causes the voltage Uc across capacitor C to drop linearly. As soon as this voltage has attained zero value, the transistor T2 assumes its conductive state and, despite the zero value of the voltage 80 still prevailing, its collector current flowing through resistor 94 puts transistor T3 into its conductive state. Transistor T3 then renders the feedback loop effective and blocks transistor T4 and at this instant the previously existing control pulse Jo is terminated. The control pulse Jo has a duration proportional to the quantity of air entering the cylinder at each induction stroke, and either the charging current or the discharging current can be made dependent upon this quantity.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722242795 DE2242795C3 (en) | 1972-08-31 | Electrically controlled fuel injection system for an internal combustion engine with a pulse lengthening stage |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1445709A true GB1445709A (en) | 1976-08-11 |
Family
ID=5855071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4086073A Expired GB1445709A (en) | 1972-08-31 | 1973-08-30 | Electrically controlled fuel injection systems for internal combustion engines |
Country Status (8)
Country | Link |
---|---|
US (1) | US3898964A (en) |
JP (1) | JPS4967016A (en) |
AU (1) | AU473216B2 (en) |
BE (1) | BE804249A (en) |
FR (1) | FR2163205A5 (en) |
GB (1) | GB1445709A (en) |
IT (1) | IT973296B (en) |
NL (1) | NL7311934A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278061A (en) * | 1977-01-08 | 1981-07-14 | Robert Bosch Gmbh | Method and apparatus for adjusting fuel injection control |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3919916A (en) * | 1974-09-12 | 1975-11-18 | Illinois Tool Works | Drive rivet assembly |
DE2517233C2 (en) * | 1975-04-18 | 1984-03-15 | Robert Bosch Gmbh, 7000 Stuttgart | Electrically controlled fuel injection system for internal combustion engines |
DE2530308C2 (en) * | 1975-07-08 | 1984-05-24 | Robert Bosch Gmbh, 7000 Stuttgart | Device for limiting the minimum duration of injection control commands in an electrically controlled fuel injection system for internal combustion engines |
FR2332431A1 (en) * | 1975-11-20 | 1977-06-17 | Sibe | IMPROVEMENTS TO FUEL SUPPLY DEVICES FOR INTERNAL COMBUSTION ENGINES |
JPS53143826A (en) * | 1977-05-19 | 1978-12-14 | Japan Electronic Control Syst | Operating system of fuel injection valve for internal combustion engine |
JPS5474924A (en) * | 1977-11-28 | 1979-06-15 | Nippon Denso Co Ltd | Electronically-controlled fuel injection apparatus |
DE2815780C2 (en) * | 1978-04-12 | 1986-10-23 | Robert Bosch Gmbh, 7000 Stuttgart | Safety device for controlling switching means in the supply line of electrical consumers in connection with a fuel metering system in an internal combustion engine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3005447A (en) * | 1959-10-07 | 1961-10-24 | Bosch Gmbh Robert | Fuel injection arrangement for internal combustion engines |
US3705572A (en) * | 1968-04-05 | 1972-12-12 | Brico Eng | Fuel injection systems for internal combustion engines |
US3636931A (en) * | 1968-04-17 | 1972-01-25 | Hitachi Ltd | Fuel injection controlling system for internal combustion engine |
US3665900A (en) * | 1968-11-07 | 1972-05-30 | Bosch Gmbh Robert | Electronic control system for shaping the fuel-speed characteristics of an internal combustion engine |
US3692003A (en) * | 1969-08-09 | 1972-09-19 | Nippon Denso Co | Fuel control system for internal combustion engines |
US3612008A (en) * | 1970-02-16 | 1971-10-12 | Acf Ind Inc | Vacuum-responsive voltage generator for a fuel injection system |
US3817226A (en) * | 1970-07-14 | 1974-06-18 | Nippon Denso Co | Fuel control system for internal combustion engines |
-
1972
- 1972-12-15 FR FR7244907A patent/FR2163205A5/en not_active Expired
- 1972-12-29 IT IT34097/72A patent/IT973296B/en active
-
1973
- 1973-08-30 GB GB4086073A patent/GB1445709A/en not_active Expired
- 1973-08-30 NL NL7311934A patent/NL7311934A/en not_active Application Discontinuation
- 1973-08-30 BE BE135140A patent/BE804249A/en unknown
- 1973-08-30 AU AU59849/73A patent/AU473216B2/en not_active Expired
- 1973-08-31 JP JP48098141A patent/JPS4967016A/ja active Pending
- 1973-09-21 US US392811A patent/US3898964A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278061A (en) * | 1977-01-08 | 1981-07-14 | Robert Bosch Gmbh | Method and apparatus for adjusting fuel injection control |
Also Published As
Publication number | Publication date |
---|---|
NL7311934A (en) | 1974-03-04 |
FR2163205A5 (en) | 1973-07-20 |
DE2242795B2 (en) | 1977-04-14 |
IT973296B (en) | 1974-06-10 |
AU473216B2 (en) | 1976-06-17 |
DE2242795A1 (en) | 1974-03-21 |
BE804249A (en) | 1973-12-17 |
JPS4967016A (en) | 1974-06-28 |
US3898964A (en) | 1975-08-12 |
AU5984973A (en) | 1975-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |