US3726261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration enrichment signalling means for electronic fuel systems
Assignee: Bendix Corp
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Filing: 1971-01-25
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Granted: 1973-04-10
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Expires: 1991-01-25
Abstract
Abstract An acceleration enrichment signalling means for a fuel system used to supply fuel to an internal combustion engine in which the additional fuel requirement signal is generated so that additional fuel may be provided to the engine before air flow to the engine increases. The present invention provides mechanical and electrical means for working in combination with specialized circuitry to provide an increase in the fuel flow to the engine prior to any increase in air flow to thereby prevent any discontinuity in engine operation which may be caused by lags in fuel flow due to the electrical and mechanical characteristics of the main fuel system and of the engine.
Inventors
- 👤 R Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:39
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/045; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
204 words
In a fuel control system of the type having electronic circuitry to generate electrical signals for controlling actuation of injector valve means to thereby control fuel delivery to an internal combustion engine having a throttle-valve controlled air intake and means externally positionable by an operator controlled linkage mechanism to variabley control the throttle valve position, the improvement comprising means providing a lost-motion mechanical connection between the throttle valve and the operator positionable throttle valve control linkage, resilient means for biasing the lost-motion connection towards one extreme position corresponding to the positon assumed in the absence of an operator signal, and resistive electrical signal generating means connected to the operator positionable throttle valve control linkage operative to generate an electrical signal indicative of the instantaneous throttle valve control linkage setting whereby opening movement of the throttle valve control linkage will cause a change in the generated electrical signal in synchronism with the motion of the throttle valve control linkage and prior to a change in the throttle valve positon and means for communicating said electrical signal to the electronic circuitry for controllably altering the injector valve means actuation whereby fuel delivery may be increased prior to increases in air flow through the air intake means.
Claim 2
Dependent Claim
204 words
In a fuel control system of the type having electronic circuitry to generate electrical signals for controlling actuation of injector valve means to thereby control fuel delivery to an internal combustion engine having a throttle-valve controlled air intake and means externally positionable by an operator controlled linkage mechanism to variabley control the throttle valve position, the improvement comprising means providing a lost-motion mechanical connection between the throttle valve and the operator positionable throttle valve control linkage, resilient means for biasing the lost-motion connection towards one extreme position corresponding to the positon assumed in the absence of an operator signal, and resistive electrical signal generating means connected to the operator positionable throttle valve control linkage operative to generate an electrical signal indicative of the instantaneous throttle valve control linkage setting whereby opening movement of the throttle valve control linkage will cause a change in the generated electrical signal in synchronism with the motion of the throttle valve control linkage and prior to a change in the throttle valve positon and means for communicating said electrical signal to the electronic circuitry for controllably altering the injector valve means actuation whereby fuel delivery may be increased prior to increases in air flow through the air intake means.
Claim 3
Dependent Claim
63 words
The system as claimed in claim 1 wherein said signal generating means comprise resistive potentiometer means having a wiper arm porton and a contact member and said wiper arm portion is coupled to said throttle control means and said contact member is moved in response to said wiper arm portion to provide a variable voltage signal indicative of said wiper arm portion position.
Claim 4
Dependent Claim
214 words
An air intake throttle control for internal combustion engines for use with electronic fuel control systems comprising: a throttle body adapted to be attached to the air intake of the engine; throttle valve means within said body positionable to control air flow therethrough; throttle valve position control means coupled to said throttle valve means responsive to an operator signal operative to variably position said throttle valve means within said throttle body; said throttle valve position control means including a lost-motion linkage member whereby motion of said throttle valve position control means may precede a change in the position of said throttle valve means relative to said throttle body; and electrical means including a resistive element connected to said throttle valve position control means such that the lost-motion linkage member is interposed between the electrical means and the throttle valve means, said electrical means cooperative with the lost-motion member to product an electrical signal indicative of a movement commended by the operator prior to the movement of the throttle valve means ; said electrical means further including means for communicating said electrical signal to the electronic fuel control system whereby fuel delivery to the engine may be increased in response to said electrical signal prior to an increase in air flow through said throttle body.
Claim 5
Dependent Claim
214 words
An air intake throttle control for internal combustion engines for use with electronic fuel control systems comprising: a throttle body adapted to be attached to the air intake of the engine; throttle valve means within said body positionable to control air flow therethrough; throttle valve position control means coupled to said throttle valve means responsive to an operator signal operative to variably position said throttle valve means within said throttle body; said throttle valve position control means including a lost-motion linkage member whereby motion of said throttle valve position control means may precede a change in the position of said throttle valve means relative to said throttle body; and electrical means including a resistive element connected to said throttle valve position control means such that the lost-motion linkage member is interposed between the electrical means and the throttle valve means, said electrical means cooperative with the lost-motion member to product an electrical signal indicative of a movement commended by the operator prior to the movement of the throttle valve means ; said electrical means further including means for communicating said electrical signal to the electronic fuel control system whereby fuel delivery to the engine may be increased in response to said electrical signal prior to an increase in air flow through said throttle body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |