BR8707900A - ELECTRONIC FUEL INJECTION CONTROL CIRCUIT FOR AN INTERNAL COMBUSTION ENGINE - Google Patents
ELECTRONIC FUEL INJECTION CONTROL CIRCUIT FOR AN INTERNAL COMBUSTION ENGINEInfo
- Publication number
- BR8707900A BR8707900A BR8707900A BR8707900A BR8707900A BR 8707900 A BR8707900 A BR 8707900A BR 8707900 A BR8707900 A BR 8707900A BR 8707900 A BR8707900 A BR 8707900A BR 8707900 A BR8707900 A BR 8707900A
- Authority
- BR
- Brazil
- Prior art keywords
- output
- signal
- throttle
- vacuum
- control circuit
- Prior art date
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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- 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
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Interpreted intake-manifold vacuum and engine speed are used to produce an electrical output signal that reflects throttle position. Since the device has no mechanical tie to the throttle, there is none of the hysteresis or mechanical wear that are characteristic of conventional throttle-position sensors. The device comprises a tachometer circuit which is modulated by the signal from a differential-pressure transducer, connected to track the instantaneous hydraulic pressure drop across the engine throttle. The tachometer output controls the duty cycle of a pulse generator which , in turn, drives an ouput transistor; a reference potential is applied across the load resistor and emitter of this output transistor, and the output signal is obtained as a d-c control signal, upon filtering the signal from the collector of the output transducer. The transfer function of the device yields maximum output when there is little or no intake vacuum, e.g., at sustained high speed, and minimum output is obtained from minimum speed and maximum vacuum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US93659286A | 1986-12-01 | 1986-12-01 | |
| PCT/US1987/003121 WO1988004361A2 (en) | 1986-12-01 | 1987-11-24 | Throttle-position sensor for an electronic fuel-injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR8707900A true BR8707900A (en) | 1989-10-31 |
Family
ID=25468864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR8707900A BR8707900A (en) | 1986-12-01 | 1987-11-24 | ELECTRONIC FUEL INJECTION CONTROL CIRCUIT FOR AN INTERNAL COMBUSTION ENGINE |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0334894B1 (en) |
| JP (1) | JPH02501399A (en) |
| AT (1) | ATE58206T1 (en) |
| BR (1) | BR8707900A (en) |
| CA (1) | CA1286752C (en) |
| DE (1) | DE3766112D1 (en) |
| WO (1) | WO1988004361A2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3888458A (en) * | 1972-08-09 | 1975-06-10 | Gen Motors Corp | Mass flow air meter |
| FR2406727A1 (en) * | 1977-10-21 | 1979-05-18 | Herbault Patrick | Electronic fuel injection system for IC engine - has air flow detector responding to pressure upstream of throttle, with signal fed to circuit which also receives tachometer output |
| JPS5820948A (en) * | 1981-07-29 | 1983-02-07 | Mikuni Kogyo Co Ltd | Fuel supplying system for internal-combustion engine |
| JPS60178948A (en) * | 1984-02-24 | 1985-09-12 | Honda Motor Co Ltd | Abnormality detecting and displaying device in electronic fuel supply control device for internal-combustion engine |
-
1987
- 1987-11-24 DE DE8888900903T patent/DE3766112D1/en not_active Expired - Fee Related
- 1987-11-24 JP JP88501064A patent/JPH02501399A/en active Pending
- 1987-11-24 AT AT88900903T patent/ATE58206T1/en not_active IP Right Cessation
- 1987-11-24 BR BR8707900A patent/BR8707900A/en unknown
- 1987-11-24 EP EP88900903A patent/EP0334894B1/en not_active Expired - Lifetime
- 1987-11-24 WO PCT/US1987/003121 patent/WO1988004361A2/en active IP Right Grant
- 1987-11-30 CA CA000553166A patent/CA1286752C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1988004361A2 (en) | 1988-06-16 |
| ATE58206T1 (en) | 1990-11-15 |
| EP0334894A1 (en) | 1989-10-04 |
| CA1286752C (en) | 1991-07-23 |
| JPH02501399A (en) | 1990-05-17 |
| EP0334894B1 (en) | 1990-11-07 |
| DE3766112D1 (en) | 1990-12-13 |
| WO1988004361A3 (en) | 1988-07-14 |
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