Patent US3557765A successfully refreshed from Google Patents.
US3557765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection pump
Assignee: Ambac Industries Inc
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Filing: 1968-11-29
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Granted: 1971-01-26
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Expires: 1988-11-29
Abstract
Abstract A fuel injection pump for injecting metered quantities of liquid fuel in timed sequence into the cylinders of an internal combustion engine through suitable nozzles. The pump is characterized by a single reciprocating and rotating pumping plunger, the rotation of which by means of an axial distributing slot thereon provides an accurately metered distribution of fuel to the engine nozzles. The pump includes an integral hydraulic governor which senses changes in engine speed by reference to fuel pressure. A centrifugal regulator maintains a control fuel pressure which is an accurate indication of engine speed. A hydraulic torque control is provided in association with the hydraulic governor to restrict full load fuel delivery to predetermined levels. An automatic hydraulic excess fuel device is coupled with the hydraulic torque control to permit the necessary excess starting fuel required during cranking of the engine.
Inventors
- 👤 Carl H Nystrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:29
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/02; F02D1/08; F02D1/12; F02M; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/123; F02M41/125; F02M41/126; F02M41/128
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
302 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger slidably and rotatably disposed within said bore, pump drive means for driving said plunger in rotation and reciprocation, a fuel control sleeve on said plunger axially adjustable to control the end of injection by opening a spill port in the plunger, and a fuel supply pump, the improvement comprising hydraulic governing means and torque control means for said pump, said governing means including a governor piston and cylinder, means for delivering fuel into said cylinder at a pressure proportional to the pump speed, means linking said piston with said fuel control sleeve, a spring acting on said governor piston opposed to the fuel pressure, a throttle linkage connected with said spring for selectively varying the force exerted on said governor piston by said spring, said torque control means comprising a torque control piston slidably disposed in a cylinder, means for delivering fuel under pressure into said cylinder at a pressure proportional to the pump speed, a spring acting on said torque control piston to oppose said fuel pressure, means operatively connecting said torque control piston with said fuel control sleeve during full load fuel delivery of said pump, and means permitting an overriding of said governor means by said torque control means, said means for delivering fuel at a pressure proportional to pump speed to said governor and torque control cylinders comprising an auxiliary pump fed by said fuel supply pump and coupled to said pump drive means, conduit means connecting said auxiliary pump with said governor and torque control cylinders, and a centrifugal fuel pressure regulator driven by said pump drive means connected with said fuel conduit means for regulating the pressure of fuel therein in accordance with the speed of said pump.
Claim 2
Dependent Claim
302 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger slidably and rotatably disposed within said bore, pump drive means for driving said plunger in rotation and reciprocation, a fuel control sleeve on said plunger axially adjustable to control the end of injection by opening a spill port in the plunger, and a fuel supply pump, the improvement comprising hydraulic governing means and torque control means for said pump, said governing means including a governor piston and cylinder, means for delivering fuel into said cylinder at a pressure proportional to the pump speed, means linking said piston with said fuel control sleeve, a spring acting on said governor piston opposed to the fuel pressure, a throttle linkage connected with said spring for selectively varying the force exerted on said governor piston by said spring, said torque control means comprising a torque control piston slidably disposed in a cylinder, means for delivering fuel under pressure into said cylinder at a pressure proportional to the pump speed, a spring acting on said torque control piston to oppose said fuel pressure, means operatively connecting said torque control piston with said fuel control sleeve during full load fuel delivery of said pump, and means permitting an overriding of said governor means by said torque control means, said means for delivering fuel at a pressure proportional to pump speed to said governor and torque control cylinders comprising an auxiliary pump fed by said fuel supply pump and coupled to said pump drive means, conduit means connecting said auxiliary pump with said governor and torque control cylinders, and a centrifugal fuel pressure regulator driven by said pump drive means connected with said fuel conduit means for regulating the pressure of fuel therein in accordance with the speed of said pump.
Claim 3
Dependent Claim
76 words
A fuel injection pump as claimed in claim 1 wherein said means linking said governor piston with said fuel control sleeve comprises a control shaft rotatably mounted in said hydraulic head perpendicularly to said plunger, an eccentric pin on the inner end of said control shaft operatively connected to said control sleeve, and a lever on the outer end of said control shaft extending radially therefrom and operatively connected with said governor piston for movement thereby.
Claim 4
Dependent Claim
52 words
A fuel injection pump as claimed in claim 2 wherein said means operatively connecting said torque control piston with said fuel control sleeve comprises a fuel control arm extending from said control shaft, and an extending portion of said torque control piston aligned with and adapted to engage said fuel control arm.
Claim 5
Dependent Claim
50 words
A fuel injection pump as claimed in claim 3 wherein said means permitting an overriding of said governor means by said torque control means comprises a spring connection oF said lever to said control shaft, said control arm engageable by said torque control device being secured to said control shaft.
Claim 6
Dependent Claim
48 words
A fuel injection pump as claimed in claim 4 including excess fuel means actuated by said speed-regulated fuel pressure for reducing the spring force applied to said torque control piston during engine cranking to permit an excess fuel setting of said fuel control arm by said throttle linkage.
Claim 7
Dependent Claim
222 words
A torque control device for controlling the maximum fuel output of a fuel injection pump comprising a torque control piston slidably disposed in a cylinder, means for delivering a fluid under pressure into said cylinder on one side of said piston at a pressure varying proportionately with pump speed, said means including an auxiliary fuel pump driven by said fuel injection pump means and fed by the fuel supply pump, conduit means connecting said auxiliary pump with said cylinder, and a centrifugal fuel pressure regulator driven by the pump drive means connected with said fuel conduit means, spring means acting on said piston to oppose said fluid pressure, means operatively connecting said piston with the pump fuel control during full load fuel delivery of the pump over at least a portion of the operating speed range of the pump, the piston movement under the influence of said spring means serving to decrease pump fuel delivery, excess fuel means comprising an excess fuel piston and cylinder axially aligned with said torque control piston and cylinder, means for delivering the speed regulated fluid pressure to said excess fuel cylinder to urge said piston toward said torque control piston, said spring means extending between said torque control and said excess fuel piston, and supplemental spring means urging said excess fuel piston against said fluid pressure.
Claim 8
Dependent Claim
222 words
A torque control device for controlling the maximum fuel output of a fuel injection pump comprising a torque control piston slidably disposed in a cylinder, means for delivering a fluid under pressure into said cylinder on one side of said piston at a pressure varying proportionately with pump speed, said means including an auxiliary fuel pump driven by said fuel injection pump means and fed by the fuel supply pump, conduit means connecting said auxiliary pump with said cylinder, and a centrifugal fuel pressure regulator driven by the pump drive means connected with said fuel conduit means, spring means acting on said piston to oppose said fluid pressure, means operatively connecting said piston with the pump fuel control during full load fuel delivery of the pump over at least a portion of the operating speed range of the pump, the piston movement under the influence of said spring means serving to decrease pump fuel delivery, excess fuel means comprising an excess fuel piston and cylinder axially aligned with said torque control piston and cylinder, means for delivering the speed regulated fluid pressure to said excess fuel cylinder to urge said piston toward said torque control piston, said spring means extending between said torque control and said excess fuel piston, and supplemental spring means urging said excess fuel piston against said fluid pressure.
Claim 9
Dependent Claim
184 words
A torque control device for controlling the maximum fuel output of a fuel injection pump comprising a torque control piston slidably disposed in a cylinder, means for delivering a fluid under pressure into said cylinder on one side of said piston at a pressure varying proportionately with pump speed, spring means acting on said piston to oppose said fluid pressure and means operatively connecting said piston with the pump fuel control during full load fuel delivery of said pump over a portion of the operating speed range of said pump, piston movement under the influence of said spring means serving to decrease pump fuel delivery, a second piston and cylinder, means for delivering fluid at a pressure proportional to the pump speed into said second cylinder, spring means acting against said second piston in opposition to said fluid pressure, and means operatively connecting said second piston with the pump fuel control during pump full load fuel delivery over a second portion of the pump operating speed range, movement of said second piston under the influence of said fuel pressure serving to increase fuel delivery.
Claim 10
Dependent Claim
184 words
A torque control device for controlling the maximum fuel output of a fuel injection pump comprising a torque control piston slidably disposed in a cylinder, means for delivering a fluid under pressure into said cylinder on one side of said piston at a pressure varying proportionately with pump speed, spring means acting on said piston to oppose said fluid pressure and means operatively connecting said piston with the pump fuel control during full load fuel delivery of said pump over a portion of the operating speed range of said pump, piston movement under the influence of said spring means serving to decrease pump fuel delivery, a second piston and cylinder, means for delivering fluid at a pressure proportional to the pump speed into said second cylinder, spring means acting against said second piston in opposition to said fluid pressure, and means operatively connecting said second piston with the pump fuel control during pump full load fuel delivery over a second portion of the pump operating speed range, movement of said second piston under the influence of said fuel pressure serving to increase fuel delivery.
Claim 11
Dependent Claim
187 words
A torque control device for controlling the maximum fuel output of a fuel injection pump comprising a torque control piston slidably disposed in a cylinder, means for delivering a fluid under pressure into said cylinder on one side of said piston at a pressure varying proportionately with pump speed, spring means acting on said piston to oppose said fluid pressure, means operatively connecting said piston with the pump fuel control during full load fuel delivery of said pump over at least a portion of the operating speed range of said pump, the piston movement under the influence of said spring means serving to decrease pump fuel delivery, an override device for providing fuel cutback upon rapid acceleration of the pump engine, said override device comprising a piston and cylinder adjacent and aligned with the pump fuel control, said latter piston including a plunger extending therefrom, spring means urging said piston and plunger toward engagement with the pump fuel control, and conduit means connected with the engine manifold for delivering engine manifold pressure iNto said latter cylinder to urge said piston in opposition to said latter spring means.
Claim 12
Dependent Claim
187 words
A torque control device for controlling the maximum fuel output of a fuel injection pump comprising a torque control piston slidably disposed in a cylinder, means for delivering a fluid under pressure into said cylinder on one side of said piston at a pressure varying proportionately with pump speed, spring means acting on said piston to oppose said fluid pressure, means operatively connecting said piston with the pump fuel control during full load fuel delivery of said pump over at least a portion of the operating speed range of said pump, the piston movement under the influence of said spring means serving to decrease pump fuel delivery, an override device for providing fuel cutback upon rapid acceleration of the pump engine, said override device comprising a piston and cylinder adjacent and aligned with the pump fuel control, said latter piston including a plunger extending therefrom, spring means urging said piston and plunger toward engagement with the pump fuel control, and conduit means connected with the engine manifold for delivering engine manifold pressure iNto said latter cylinder to urge said piston in opposition to said latter spring means.
Claim 13
Dependent Claim
195 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger slidably and rotatably disposed within said bore, pump drive means for driving said plunger in rotation and reciprocation, a fuel control sleeve on said plunger axially adjustable to control the end of injection by opening a spill port in the plunger, and a fuel supply pump, the improvement comprising hydraulic governing means for said pump, said governing means including a piston and cylinder, means for delivering a fluid into said cylinder at a pressure proportional to the pump speed, said latter means including an auxiliary pump fed by said fuel supply pump and coupled to said pump drive means, conduit means connecting said auxiliary pump with said cylinder, and a centrifugal fluid pressure regulator driven by said pump drive means connected with said conduit means, means linking said piston with said fuel control sleeve to control the movement of said sleeve, a spring means acting on said piston opposed to the pressure of said fluid, and throttle linkage means associated with said spring means for selectively varying the force exerted on said piston by said spring means.
Claim 14
Dependent Claim
195 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger slidably and rotatably disposed within said bore, pump drive means for driving said plunger in rotation and reciprocation, a fuel control sleeve on said plunger axially adjustable to control the end of injection by opening a spill port in the plunger, and a fuel supply pump, the improvement comprising hydraulic governing means for said pump, said governing means including a piston and cylinder, means for delivering a fluid into said cylinder at a pressure proportional to the pump speed, said latter means including an auxiliary pump fed by said fuel supply pump and coupled to said pump drive means, conduit means connecting said auxiliary pump with said cylinder, and a centrifugal fluid pressure regulator driven by said pump drive means connected with said conduit means, means linking said piston with said fuel control sleeve to control the movement of said sleeve, a spring means acting on said piston opposed to the pressure of said fluid, and throttle linkage means associated with said spring means for selectively varying the force exerted on said piston by said spring means.
Claim 15
Dependent Claim
208 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger slidably and rotatably disposed within said bore, pump drive means for driving said plunger in rotation and reciprocation, and a fuel control sleeve on said plunger axially adjustable to control the end of injection by opening a spill port in the plunger, the improvement comprising hydraulic governing means for said pump, said governing means including a piston and cylinder, means for delivering a fluid into said cylinder at a pressure proportional to the pump speed, means linking said piston with said fuel control sleeve to control the movement of said sleeve, spring means acting on said piston opposed to the pressure of said fluid, and throttle linkage means associated with said spring means for selectively varying the force exerted on said piston by said spring means, said means linking said piston with said fuel control sleeve comprising a control shaft rotatably mounted in said hydraulic head perpendicularly to said plunger, an eccentric pin on the inner end of said control shaft operatively connected to said control sleeve, and a lever on the outer end of said control shaft extending radially therefrom and operatively connected with said piston for movement thereby.
Claim 16
Dependent Claim
208 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger slidably and rotatably disposed within said bore, pump drive means for driving said plunger in rotation and reciprocation, and a fuel control sleeve on said plunger axially adjustable to control the end of injection by opening a spill port in the plunger, the improvement comprising hydraulic governing means for said pump, said governing means including a piston and cylinder, means for delivering a fluid into said cylinder at a pressure proportional to the pump speed, means linking said piston with said fuel control sleeve to control the movement of said sleeve, spring means acting on said piston opposed to the pressure of said fluid, and throttle linkage means associated with said spring means for selectively varying the force exerted on said piston by said spring means, said means linking said piston with said fuel control sleeve comprising a control shaft rotatably mounted in said hydraulic head perpendicularly to said plunger, an eccentric pin on the inner end of said control shaft operatively connected to said control sleeve, and a lever on the outer end of said control shaft extending radially therefrom and operatively connected with said piston for movement thereby.
Claim 17
Dependent Claim
296 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger rotatably and slidably disposed within said bore, drive means for providing a reciprocating and rotating motion of the plunger, a closed end of the bore defining a fuel distribution chamber in conjunction with one end of the plunger, means for introducing fuel into the fuel distribution chamber, means in the head and the plunger for distributing fuel from the fuel distribution chamber sequentially to a plurality of outlet ports in the head, passage means in said plunger extending from said fuel distribution chamber to a spill port opening into a fuel sump in the hydraulic head, and a fuel control sleeve slidably disposed on said plunger in said sump for controlling the injection cutoff by varying the plunger position at which said spill port opens, the improvement comprising a hydraulic governor for controlling the fuel delivery of said pump in conjunction with the pump throttle, said governor including a governor piston slidable within a cylinder, means for delivering fuel into said cylinder at a pressure proportional to the pump speed, said latter means comprising a fuel pump coupled to the plunger drive means, conduit means connecting said fuel pump with said cylinder, and a centrifugal fuel pressure regulator driven by said pump drive means connected with said fuel conduit, means mechanically linking said governor piston to said fuel control sleeve to control the movement of said sleeve, a compression spring connected to said piston urging said piston against the fluid in said cylinder, said spring being operatively connected with the pump throttle operating lever whereby the force exerted on said piston by said spring may be selectively varied in accordance with the desired fuel output of the pump.
Claim 18
Dependent Claim
296 words
In a fuel injection pump including a hydraulic head having a bore therein, a pumping and distributing plunger rotatably and slidably disposed within said bore, drive means for providing a reciprocating and rotating motion of the plunger, a closed end of the bore defining a fuel distribution chamber in conjunction with one end of the plunger, means for introducing fuel into the fuel distribution chamber, means in the head and the plunger for distributing fuel from the fuel distribution chamber sequentially to a plurality of outlet ports in the head, passage means in said plunger extending from said fuel distribution chamber to a spill port opening into a fuel sump in the hydraulic head, and a fuel control sleeve slidably disposed on said plunger in said sump for controlling the injection cutoff by varying the plunger position at which said spill port opens, the improvement comprising a hydraulic governor for controlling the fuel delivery of said pump in conjunction with the pump throttle, said governor including a governor piston slidable within a cylinder, means for delivering fuel into said cylinder at a pressure proportional to the pump speed, said latter means comprising a fuel pump coupled to the plunger drive means, conduit means connecting said fuel pump with said cylinder, and a centrifugal fuel pressure regulator driven by said pump drive means connected with said fuel conduit, means mechanically linking said governor piston to said fuel control sleeve to control the movement of said sleeve, a compression spring connected to said piston urging said piston against the fluid in said cylinder, said spring being operatively connected with the pump throttle operating lever whereby the force exerted on said piston by said spring may be selectively varied in accordance with the desired fuel output of the pump.
Claim 19
Dependent Claim
77 words
A fuel injection pump as claimed in claim 11 wherein said means mechanically linking said governor piston with said fuel control sleeve comprises a control shaft rotatably mounted in said hydraulic head perpendicularly to said plunger, an eccentric pin on the inner end of said control shaft operatively connected to said control sleeve, and a lever on the outer end of said control shaft extending radially therefrom and operatively connected with said governor piston for movement thereby.
References Cited (Backward Citations)
US2771066A
Cited
US2869529A
Cited
US2767700A
Cited
US3358662A
Cited
US3405700A
Cited
US3385276A
Cited
US3443554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |