GB1356060A - Electrically controlled fuel injection systems for internal com bustion engines - Google Patents
Electrically controlled fuel injection systems for internal com bustion enginesInfo
- Publication number
- GB1356060A GB1356060A GB5976971A GB5976971A GB1356060A GB 1356060 A GB1356060 A GB 1356060A GB 5976971 A GB5976971 A GB 5976971A GB 5976971 A GB5976971 A GB 5976971A GB 1356060 A GB1356060 A GB 1356060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- fuel injection
- capacitor
- heating current
- engine
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
- F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor
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)
- Measuring Volume Flow (AREA)
Abstract
1356060 Fuel injection systems ROBERT BOSCH GmbH 22 Dec 1971 [23 Dec 1970] 59769/71 Heading G1N In an I. C. engine intermittant fuel injection system, the duration of the injection valve actuating pulse S is controlled in dependence upon air intake quantity Q which is determined by a temperature dependent resistor 30 arranged in the intake 25 of the engine 10 and provided with a heating current Jh so as to maintain its temperature substantially constant, a voltage Us dependent upon the heating current Jh being applied to a plurality of amplifying networks A1-A4 having different responses and amplification factors so that a summing amplifier 40 provides a voltage Uk, as shown in Fig. 3, which is matched to the air intake quantity Q. This voltage is applied to an integrating device 37 which is charged, over a predetermined crankshaft angle, in dependence upon the voltage Uk, the discharge time then determining the duration ti of the injection valve actuating pulses S provided by a differentiating device 38. As shown, the resistor 30 is included in a bridge network whose out-of-balance voltage is applied to a regulator R for regulating the heating current Jh. The integrator 37, Fig.6 (not shown), includes a capacitor in the feedback of an operational amplifier, the capacitor being charged in synchronism with engine rotation by a switch 46 and bi-stable multi-vibrator 48, for 180 degrees crank-shaft rotation, the capacitor then being discharged. The bi-stable multi-vibrator operates transistor switches in the integrator for this function. The amplifying networks A1 - A4, Fig. 4 (not shown) each include an operational amplifier whose response and amplification factor is adjustable to provide the desired voltage function Uk in the summing amplifier 40, Fig. 5 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702063331 DE2063331C3 (en) | 1970-12-23 | Fuel injection system for an internal combustion engine with an electrical control device for adapting the injection quantity to the intake air quantity |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1356060A true GB1356060A (en) | 1974-06-12 |
Family
ID=5791910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5976971A Expired GB1356060A (en) | 1970-12-23 | 1971-12-22 | Electrically controlled fuel injection systems for internal com bustion engines |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2119713A5 (en) |
GB (1) | GB1356060A (en) |
IT (1) | IT944280B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT980092B (en) * | 1972-04-04 | 1974-09-30 | Cav Ltd | FUEL SUPPLY SYSTEM FOR ENGINES WITH COMPRESSION IGNITION |
DE2507917C2 (en) * | 1975-02-24 | 1986-01-02 | Robert Bosch Gmbh, 7000 Stuttgart | Device for regulating the optimal operating behavior of an internal combustion engine |
FR2315614A1 (en) * | 1975-06-26 | 1977-01-21 | Lebre Eugene | Electronic control for fuel injection system - has circuit to measure air flow to determine quantity of fuel required |
IT1218996B (en) * | 1988-02-05 | 1990-04-24 | Weber Srl | CONVERSION SYSTEM OF A SIGNAL COMING FROM A LINEAR CHARACTERISTIC TRANSDUCER TO OBTAIN MODIFIED ACQUISITION RESOLUTIONS |
US5018385A (en) * | 1990-03-26 | 1991-05-28 | Siemens Automotive L.P. | I.C. engine airflow meter having speed-based automatic gain control |
-
1971
- 1971-12-22 GB GB5976971A patent/GB1356060A/en not_active Expired
- 1971-12-22 IT IT3280871A patent/IT944280B/en active
- 1971-12-23 FR FR7146465A patent/FR2119713A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2063331B2 (en) | 1977-03-10 |
DE2063331A1 (en) | 1972-07-06 |
IT944280B (en) | 1973-04-20 |
FR2119713A5 (en) | 1972-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |