US3638628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control assembly for internal combustion engines having fuel injectors
Assignee: Individual
•
Filing: 1970-09-18
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Granted: 1972-02-01
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Expires: 1990-09-18
Abstract
Abstract A fuel control assembly is described for injector fed internal combustion engines having a common injector control tube connected to a plurality of injector racks to normally move the racks in unison. Control rack levers are mounted on the control tube and extend radially therefrom to connect with the racks. A safety feature is provided to enable the control tube to move the remaining racks to an idle position when one of the racks become frozen to prevent the engine from overspeeding. The safety feature is incorporated in the control rack levers to release the connection between the tube and the frozen rack and enable the tube to control the remaining racks.
Inventors
- 👤 Henry Stanford Stolworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
F; F01; F01L; F01L1/00; F02; F02M; F02M57/00; F02M57/02; F01L2710/00; F01L2710/006; F02B; F02B3/00; F02B3/06; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1335
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
229 words
In a fuel control system for a multicylinder internal combustion engine having: a plurality of spaced fuel injectors associated with corresponding cylinders, in which each injector has an injector control rack movably extending therefrom for controlling the amount of fuel injected into a cylinder; an injector control tube extending alongside more than one injector and rotatably mounted for rotation about an axis normal to the movement of the injector control racks; a plurality of collared injector rack control levers mounted on the injector control tube at spaced intervals corresponding to the spacing between the fuel injectors and projecting radially from the tube connecting with associated injector control racks for normally moving the injector control racks in unison in response to the rotation of the injector control tube; an injector control tube lever affixed to the tube and extending radially therefrom; a fuel rod connected to the injector control tube lever for rotating the injector control tube in response to the movement of the fuel rod; in which the improvement includes a safety means associated with each collared injector rack control lever for operatively disconnecting the corresponding injector control rack lever from a frozen injector control rack to permit the injector control tube to rotate to enable the other movable injector control racks to be responsive to the movement of the fuel rod and thereby prevent the engine from overspeeding.
Claim 2
Dependent Claim
229 words
In a fuel control system for a multicylinder internal combustion engine having: a plurality of spaced fuel injectors associated with corresponding cylinders, in which each injector has an injector control rack movably extending therefrom for controlling the amount of fuel injected into a cylinder; an injector control tube extending alongside more than one injector and rotatably mounted for rotation about an axis normal to the movement of the injector control racks; a plurality of collared injector rack control levers mounted on the injector control tube at spaced intervals corresponding to the spacing between the fuel injectors and projecting radially from the tube connecting with associated injector control racks for normally moving the injector control racks in unison in response to the rotation of the injector control tube; an injector control tube lever affixed to the tube and extending radially therefrom; a fuel rod connected to the injector control tube lever for rotating the injector control tube in response to the movement of the fuel rod; in which the improvement includes a safety means associated with each collared injector rack control lever for operatively disconnecting the corresponding injector control rack lever from a frozen injector control rack to permit the injector control tube to rotate to enable the other movable injector control racks to be responsive to the movement of the fuel rod and thereby prevent the engine from overspeeding.
Claim 3
Dependent Claim
49 words
In the fuel control system defined in claim 1 wherein the safety means has torque responsive means for enabling the injector control tube to rotate independent of a frozen injector control rack when the torque on the injector control tube exerted by the fuel rods exceeds a preselected value.
Claim 4
Dependent Claim
161 words
In the fuel control system defined in claim 2 wherein each of the collared injector rack control levers includes: a collared section affixed to the injector control rack; an arm section extending radially from the collared section having an end connected with an associated rack; and wherein the safety means interconnects the arm section and the collar section in which the torque responsive means engages the arm section and the collar section to lock the arm section to the collar section when the torque exerted on the control tube is below the preselected value to translate the rotation of the control tube into movement of the control racks and to release the arm section from the collared section when an associate control rack becomes frozen and the torque on the control tube reaches the preselected value to permit the control tube to rotate and control the movement of the unfrozen injector racks in response to the movement of the fuel rod.
Claim 5
Dependent Claim
42 words
In the fuel control system defined in claim 3 wherein the torque responsive means includes a detent mechanism engaging the collared section and arm section that is spring biased to release when the torque on the control tube reaches the preselected value.
Claim 6
Dependent Claim
78 words
In the fuel control system defined in claim 4 wherein the arm section is pivotally mounted on the collar section for pivotal movement about an axis parallel with the axis of rotation of the control tube and wherein the detent mechanism engages the collar section and the arm section to prevent the arm section from pivoting about the parallel axis until the associated control rack becomes immovable and the torque on the control tube reaches the preselected value.
Claim 7
Dependent Claim
53 words
In the fuel control system defined in claim 4 wherein the fuel rod is operatively connected to a speed limiting governor having a high speed spring set at a selected preload condition, in which the detent mechanism is designed to release before the selected preload condition of the high speed spring is exceeded.
References Cited (Backward Citations)
US2645474A
Cited
US3388695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |