US3884205A — Centrifugal RPM governor for fuel injected intern…

Claim 1

Independent Claim 290 words

In a centrifugal rpm regulator for fuel injected internal combustion engines, especially diesel engines, including a housing mounting; centrifugal weight means, an adaptor sleeve slidably displaceable under the influence of the centrifugal weight means and as a function of engine rpm, at least one twoarmed intermediate lever, an operating lever, a fuel quantity control rod, the adaptor sleeve transmitting the forces associated with its controlled motions resulting from its slidable displacement through the intermediate lever to the fuel quantity control rod for adjusting the fuel quantity delivered by an injection pump used in conjunction with the regulator, the intermediate lever having a pivot point which is changeable in dependence on the pivotal position of the operating lever, the movement of the control rod being limited in the direction of increasing fuel supply by an abutment structure including a cam plate, and at least one control arm through which the abutment structure is connected to the adaptor sleeve, the abutment structure being fixedly connected to the regulator housing and being pivotable as a function of engine rpm to thereby determine the maximum fuel quantity, the improvement comprising: a. an abutment lever having a cam follower member at one end thereof; b. means connecting said abutment lever to said control rod; c. a control lever having a lever arm; d. means mounting said abutment lever to said lever arm for free pivotal movement relative to said lever arm; and e. means mounting said control lever to the housing for pivotal movement relative thereto, said abutment lever being pivotable due to its connecting and mounting means thereby causing said cam follower member to abut said cam plate and limit the maximum fuel quantity delivered by the injection pump for a given engine rpm.

Claim 2

Dependent Claim 290 words

In a centrifugal rpm regulator for fuel injected internal combustion engines, especially diesel engines, including a housing mounting; centrifugal weight means, an adaptor sleeve slidably displaceable under the influence of the centrifugal weight means and as a function of engine rpm, at least one twoarmed intermediate lever, an operating lever, a fuel quantity control rod, the adaptor sleeve transmitting the forces associated with its controlled motions resulting from its slidable displacement through the intermediate lever to the fuel quantity control rod for adjusting the fuel quantity delivered by an injection pump used in conjunction with the regulator, the intermediate lever having a pivot point which is changeable in dependence on the pivotal position of the operating lever, the movement of the control rod being limited in the direction of increasing fuel supply by an abutment structure including a cam plate, and at least one control arm through which the abutment structure is connected to the adaptor sleeve, the abutment structure being fixedly connected to the regulator housing and being pivotable as a function of engine rpm to thereby determine the maximum fuel quantity, the improvement comprising: a. an abutment lever having a cam follower member at one end thereof; b. means connecting said abutment lever to said control rod; c. a control lever having a lever arm; d. means mounting said abutment lever to said lever arm for free pivotal movement relative to said lever arm; and e. means mounting said control lever to the housing for pivotal movement relative thereto, said abutment lever being pivotable due to its connecting and mounting means thereby causing said cam follower member to abut said cam plate and limit the maximum fuel quantity delivered by the injection pump for a given engine rpm.

Claim 3

Dependent Claim 26 words

The regulator as defined in claim 1, wherein the improvement further comprises a shaft on which the operating lever and the abutment structure are pivotably mounted.

Claim 4

Dependent Claim 67 words

The regulator as defined in claim 1, wherein the improvement further comprises a set screw and a play-compensating spring, said set screw being adjustable from outside the regulator housing to thereby adjust the pivotal position of said control lever in the direction of an increasing fuel quantity, with said play-compensating spring being adapted to urge said control lever to maintain the position attained by said set screw.

Claim 5

Dependent Claim 54 words

The regulator as defined in claim 3, wherein the improvement further comprises a second lever arm extending from said control lever and at least one setting member which acts upon said second lever and by means of which the pivotal position of said control lever is varied against the force of the play-compensating spring.

Claim 6

Dependent Claim 33 words

The regulator as defined in claim 4, wherein the improvement further comprises a correcting instrument for actuating said setting member, said correcting instrument being dependent upon a physical parameter such as manifold pressure.

Claim 7

Dependent Claim 33 words

The regulator as defined in claim 4, wherein the improvement further comprises a correcting instrument for actuating said setting member, said correcting instrument being dependent upon a physical parameter such as air pressure.

Claim 8

Dependent Claim 32 words

The regulator as defined in claim 4, wherein the improvement further comprises a correcting instrument for actuating said setting member, said correcting instrument being dependent upon a physical parameter such as temperature.

Claim 9

Dependent Claim 26 words

The regulator as defined in claim 4, wherein the improvement further comprises an arresting mechanism for actuating said setting member, said arresting mechanism being operated electromagnetically.

Claim 10

Dependent Claim 26 words

The regulator as defined in claim 4, wherein the improvement further comprises an arresting mechanism for actuating said setting member, said arresting mechanism being operated pneumatically.

Claim 11

Dependent Claim 26 words

The regulator as defined in claim 4, wherein the improvement further comprises an arresting mechanism for actuating said setting member, said arresting mechanism being operated hydraulically.

Claim 12

Dependent Claim 55 words

The regulator as defined in claim 1, wherein the improvement further comprises a lever shaft coaxial with the pivot axis of said control lever and extending outwardly from the regulator housing, said lever shaft having a stop lever attached thereto and being coupled with said control lever at least in the direction of fuel stoppage.

Claim 13

Dependent Claim 123 words

The regulator as defined in claim 1, wherein the intermediate lever is formed as a cam lever having lever arms whose extent is changeable in dependence on the pivotal position of the operating lever, the cam plate includes a full load quantity sector and a stepped supplementary starting quantity sector, and the abutment structure further includes an engaging arm, and wherein the regulator further comprises a first drag link mounted on said control arm, said first drag link having a drag lever and a return spring, said drag lever having a bolt extending therefrom which acts upon said engaging arm, and said return spring serving to render said drag lever resiliently yielding in the increasing rpm direction of motion of said control arm.

Claim 14

Dependent Claim 61 words

The regulator as defined in claim 12, wherein the regulator further comprises an adjustment screw mounted to said drag lever, said adjustment screw defining a stop which establishes along with said return spring a normal position for said drag link, said adjustment screw being adjustable to vary the position of said stop and consequently the normal position of said drag link.

Claim 15

Dependent Claim 118 words

The regulator as defined in claim 12, wherein said control arm forms a U-shaped stirrup, and wherein the regulator further comprises two pivotal studs mounting said control arm to the regulator housing, a second drag link, and A return spring for said second drag link, said first drag link being mounted on one leg of said stirrup and said second drag link being mounted on the other leg of said stirrup, with said second drag link acting in the same direction as said first drag link and connecting said adaptor sleeve with said intermediate lever and with the return spring of said second drag link having a pre-tension greater than the return spring of said first drag link.

Claim 16

Dependent Claim 70 words

The regulator as defined in claim 14, wherein said second drag link has a drag lever, wherein the drag links of said first and second drag levers are mounted on said pivotal studs, and wherein each said return spring is configured as a spiral spring having one end mounted on a respective leg of said stirrup and its other end mounted on the drag lever of its respective drag link.

Claim 17

Dependent Claim 142 words

The regulator as defined in claim 12, further comprising a third resiliently yielding drag link which cooperates with said first and second drag links, said third drag link includes a return spring and is connected between said control rod and said intermediate lever and serves as an energy storage, wherein the pre-tension of said return spring of said third drag link is greater than the resistance to motion of said control rod but small enough so that the pivotal motion of said cam plate is not impeded during increasing rpm outside of the start-up range, when said intermediate lever attempts to move said control rod beyond its position as determined by said abutment structure, and wherein the pre-tension of the return spring of said first drag link is sufficiently large so that the frictional force occurring at said cam plate is overcome.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-05-19	1978-11-18	1979-05-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-05-19	1982-11-18	1983-05-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-05-19	1986-11-18	1987-05-20	$7700.00	Window Closed / Lapsed

Centrifugal RPM governor for fuel injected internal combustion engines

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