Patent US3830211A successfully refreshed from Google Patents.
US3830211A
Expired / Lapsed
US
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Centrifugal governor for controlling the rpm of injection type internal combustion engines
Assignee: Robert Bosch GmbH
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Filing: 1973-05-21
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Granted: 1974-08-20
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Expires: 1993-05-21
Abstract
Abstract A centrifugal governor for controlling the rpm of an injection type internal combustion engine having a fuel injection pump is described which governor has a housing and a regulator member being displaceable as a function of the rpm, and the regulating movements of which member are transmitted, by means of a twoarmed cam lever having lever arms which are adjustable dependent upon the position given an externally turnable operating lever, to fuel delivery control means associated with the fuel injection pump, wherein the fuel delivery control means, upon completing a first part of its movement against the force of a first control spring, acts on a force-transmitting lever which is biassed by at least one second control spring; the force-transmitting lever bears an adjusting screw for setting the first control spring to a low rpm, and is adapted for swivelling about an axis which is stationary in the governor housing, and wherein the neutral position of the force-transmitting lever is determined by a stop fixed in the housing. This governor is improved by providing therein (A) A BEARING LEVER ADJUSTABLE FOR SETTING A MAXIMUM RPM AND BEARING A SPRING SEAT FOR THE AFORESAID SECOND CONTROL SPRING, (B) A SECOND ADJUSTING SCREW FOR THE BEARING LEVER, AND (C) AND ADJUSTING ELEMENT FOR LIMITING THE FIRST PART OF THE MOVEMENT OF THE REGULATOR MEMBER, THE BEARING LEVER, SECOND ADJUSTING SCREW AND ADJUSTING ELEMENT BEING IN ENGAGEMENT WITH THE FORCE-TRANSMITTING LEVER.
Inventors
- 👤 H Bechstein
- 👤 E Ritter
- 👤 H Staudt
- 👤 H Jaenke
- 👤 R Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:46
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/02; F02D1/04; F02D1/045; F02D1/08; F02D1/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
232 words
In a centrifugal governor for controlling the rpm of an injection type internal combustion engine having a fuel injection pump, which governor has a housing and a regulator member being displaceable as a function of the rpm, and the regulating movements of which member are transmitted, by means of a twoarmed cam lever having lever arms which are adjustable dependent upon the position given an externally turnable operating lever, to fuel delivery control means associated with said fuel injection pump, wherein said fuel delivery control means, upon completing a first part of its movement against the force of a first control spring, acts on a force-transmitting lever which is biassed by at least one second control spring, and said forcetransmitting lever bears an adjusting screw for setting said first control spring to a low rpm, and is adapted for swivelling about an axis which is stationary in said housing, and wherein the neutral position of said force-transmitting lever is determined by a stop fixed in said housing, the improvement comprising a. a bearing lever adjustable for setting a maximum rpm and bearing a spring seat for said second control spring, b. a second adjusting screw for said bearing lever, and c. an adjusting element for limiting the first part of the movement of said regulator member, said bearing lever, second adjusting screw and adjusting element being in engagement with said force-transmitting lever.
Claim 2
Dependent Claim
232 words
In a centrifugal governor for controlling the rpm of an injection type internal combustion engine having a fuel injection pump, which governor has a housing and a regulator member being displaceable as a function of the rpm, and the regulating movements of which member are transmitted, by means of a twoarmed cam lever having lever arms which are adjustable dependent upon the position given an externally turnable operating lever, to fuel delivery control means associated with said fuel injection pump, wherein said fuel delivery control means, upon completing a first part of its movement against the force of a first control spring, acts on a force-transmitting lever which is biassed by at least one second control spring, and said forcetransmitting lever bears an adjusting screw for setting said first control spring to a low rpm, and is adapted for swivelling about an axis which is stationary in said housing, and wherein the neutral position of said force-transmitting lever is determined by a stop fixed in said housing, the improvement comprising a. a bearing lever adjustable for setting a maximum rpm and bearing a spring seat for said second control spring, b. a second adjusting screw for said bearing lever, and c. an adjusting element for limiting the first part of the movement of said regulator member, said bearing lever, second adjusting screw and adjusting element being in engagement with said force-transmitting lever.
Claim 3
Dependent Claim
28 words
The improvement as described in claim 1, wherein said force-transmitting lever is arranged, in its neutral position, at least approximately perpendicular to the axis of said regulator member.
Claim 4
Dependent Claim
15 words
The improvement as described in claim 1, wherein said regulator member is an adaptor sleeve.
Claim 5
Dependent Claim
25 words
The improvement as described in claim 1, wherein said bearing lever is an angle lever having a pivot axis stationary relative to said force-transmitting lever.
Claim 6
Dependent Claim
62 words
The improvement as described in claim 1, wherein said adjusting screw for setting said first control spring, said adjusting element and said second adjusting screw for said bearing lever are disposed in parallel with one another and at least approximately in parallel with the axis of said regulator member, and are screw-connected to said force-transmitting lever and secured in their position thereon.
Claim 7
Dependent Claim
44 words
The improvement as described in claim 1, further comprising a stop screw screwed into said governor housing in a position at least approximately in parallel with said adjustment screws and with said adjusting element, said stop screw forming an abutment for said force-transmitting lever.
Claim 8
Dependent Claim
28 words
The improvement as described in claim 1, wherein said second control spring is a tension spring which is disposed at least approximately in parallel with said force-transmitting lever.
Claim 9
Dependent Claim
47 words
The improvement as described in Claim 7, further comprising a bearing bolt mounted in said governor housing in parallel with the axis of said regulator member and being turnable for changing the active direction of said tension spring and thereby adjusting the proportional range of the governor.
Claim 10
Dependent Claim
27 words
The improvement as described in claim 8, wherein said tension spring engages at its one end said bearing bolt, and at its other end said bearing lever.
Claim 11
Dependent Claim
28 words
The improvement as described in claim 9, wherein said bearing bolt is provided with a helicoidal groove in which said one end of said tension spring is held.
Claim 12
Dependent Claim
29 words
The improvement as described in claim 1, wherein said force-transmitting lever is of U- or H-type cross sectional configuration and has two parallel legs facing toward said injection pump.
Claim 13
Dependent Claim
29 words
The improvement as described in claim 11, further comprising a pivot pin mounted traversely in said legs of said force-transmitting lever and serving as pivot for said bearing lever.
Claim 14
Dependent Claim
38 words
The improvement as described in claim 11, wherein each of said legs is provided with a guiding slot, and said regulator member is provided with a pair of guide-pins being inserted each in one of said guiding slots.
Claim 15
Dependent Claim
56 words
The improvement as described in claim 13, wherein said first control spring is a leaf spring, wherein a fixed spring seat for one end of said leaf spring is located on said force-transmitting lever between the two legs thereof, and wherein the other end of said leaf spring abuts said guide pins of said regulator member.
Claim 16
Dependent Claim
45 words
The improvement as described in claim 14, wherein said adjusting screw for said first control spring is screw-connected to and secured in position at said force-transmitting lever in the cross part thereof intermediate said two legs and engages said leaf spring intermediate the ends thereof.
Claim 17
Dependent Claim
100 words
the improvement as described in claim 1, further comprising an additional no-load control spring supported on said force-transmitting lever and adapted for engagement by said first control spring so as to increase the bias of the latter, and a third adjusting screw screwed into said force-transmitting lever and adapted for changing the effective range of engagement of said additional no-load spring with said first control spring, said latter spring being adapted for affecting the operation of said regulator member during at least a part of the travel of said regulator member from rest position into contact with said adjusting element.
Claim 18
Dependent Claim
22 words
The improvement as described in claim 16, wherein said first control spring and said additional no-load control spring are both leaf springs.
Claim 19
Dependent Claim
30 words
The improvement as described in claim 16, further comprising a bi-metal spring supported on said force-transmitting lever and adapted for acting via said first control spring on said regulator member.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |