GB1301636A - - Google Patents
Info
- Publication number
- GB1301636A GB1301636A GB5122771A GB5122771A GB1301636A GB 1301636 A GB1301636 A GB 1301636A GB 5122771 A GB5122771 A GB 5122771A GB 5122771 A GB5122771 A GB 5122771A GB 1301636 A GB1301636 A GB 1301636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switching device
- frequency divider
- output
- engine
- crankshaft
- 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
- F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
-
- 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
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)
Abstract
1301636 Fuel injection systems ROBERT BOSCH GmbH 4 Nov 1971 [5 Nov 1970] 51227/71 Heading G1N In an I.C. engine intermittant fuel injection system, injection operations are triggered in synchronism with the rotation of the engine crankshaft by the contact breaker of the engine ignition system via a frequency divider 40, a switching device 32 being provided and including a storage device which is charged, at each trigger operation, to a value dependent upon at least one engine operating variable, the discharge time of the storage device determining, in part at least, the injection quantity delivered by at least one solenoid injection valve, energized from the output of the switching device. As shown, the contact breaker includes a fourlobed cam 35, coupled to the camshaft 17, and contacts 36, 38 connected to the ignition coil 39. Each pulse produced during contact opening is supplied to the frequency divider 40 via a pulse shaper 41 which includes a monostable multivibrator and which prevents faulty triggering, Fig.2 (not shown). The frequency divider 40 includes a bi-stable multi-vibrator, Fig.2 (not shown), which provides a triggering signal, at its output, to the switching device 33 at alternate triggerings from the contact breaker, and therefore once during each revolution of the crankshaft. The switching device 32, Fig.2, (not shown) includes a mono-stable multi-vibrator and a capacitor which, each time a triggering signal is received from the frequency divider, is charged by a constant current dependent upon the quantity of intake air provided during each half revolution of the crankshaft and determined by a potentiometer 29 whose wiper 31 is connected to a baffle plate 30 arranged in the intake manifold 25. The capacitor is then discharged with a constant current and the time taken for discharging determines the duration Tp of the output pulses S provided by switching device 32. The pulses S are preferably applied to a multiplication stage 33 where they are prolonged by a factor f dependent upon operating temperature, position of the butterfly valve, battery voltage and, if required individual operations such as starting. Pulse duration limiting means are provided in stage 41, a signal being applied to the output of device 32 via transistor 92 after the maximum permissible duration.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702054435 DE2054435C3 (en) | 1970-11-05 | Electrically controlled fuel injection system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1301636A true GB1301636A (en) | 1973-01-04 |
Family
ID=5787219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5122771A Expired GB1301636A (en) | 1970-11-05 | 1971-11-04 |
Country Status (8)
Country | Link |
---|---|
BR (1) | BR7107393D0 (en) |
CS (1) | CS152405B2 (en) |
FR (1) | FR2113562A5 (en) |
GB (1) | GB1301636A (en) |
IT (1) | IT938997B (en) |
PL (1) | PL75063B1 (en) |
SU (1) | SU466676A3 (en) |
YU (1) | YU33916B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2516347A1 (en) * | 1975-04-15 | 1976-10-28 | Bosch Gmbh Robert | ELECTRICAL CONTROL DEVICE WITH PROTECTION AGAINST GROUND SHORT CIRCUIT |
-
1971
- 1971-10-05 PL PL15090971A patent/PL75063B1/pl unknown
- 1971-10-07 IT IT2961271A patent/IT938997B/en active
- 1971-10-15 YU YU262671A patent/YU33916B/en unknown
- 1971-10-19 CS CS733071A patent/CS152405B2/cs unknown
- 1971-10-22 SU SU1707836A patent/SU466676A3/en active
- 1971-11-04 GB GB5122771A patent/GB1301636A/en not_active Expired
- 1971-11-04 FR FR7139567A patent/FR2113562A5/fr not_active Expired
- 1971-11-05 BR BR739371A patent/BR7107393D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2054435B2 (en) | 1976-01-22 |
YU262671A (en) | 1977-12-31 |
PL75063B1 (en) | 1974-12-31 |
IT938997B (en) | 1973-02-10 |
BR7107393D0 (en) | 1973-04-17 |
FR2113562A5 (en) | 1972-06-23 |
CS152405B2 (en) | 1973-12-19 |
SU466676A3 (en) | 1975-04-05 |
DE2054435A1 (en) | 1972-08-10 |
YU33916B (en) | 1978-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |