US4353340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection pump for internal combustion engines
Assignee: Robert Bosch GmbH
•
Filing: 1980-09-19
•
Granted: 1982-10-12
•
Expires: 2000-09-19
Abstract
Abstract A fuel injection pump is disclosed in which the minimum injection quantity or idling rpm is determined by an arbitrarily adjustable stop. This stop is adjusted via a heatable bimetallic spiral, which acts counter to a spiral spring for the purpose of force compensation.
Inventors
- 👤 Max Straubel
- 👤 Karl Konrath
- 👤 Gerhard Brink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/44; F02M59/447; F02D; F02D1/00; F02D1/02; F02D1/025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A fuel injection pump for internal combustion engines, including a housing and having an arbitrarily actuatable lever for adjusting injection quantity moving through a lever path and an adjustable stop associated with said lever for determining the minimum injection quantity characterized in that said stop includes a rotatable cam disc displayed perpendicularly relative to the plane of said lever path and a bimetallic spiral for rotational adjustment of said cam disc relative to said stop, wherein said stop further includes a spiral spring which serves to return said cam disc to a restoring position.
Claim 2
Dependent Claim
94 words
A fuel injection pump for internal combustion engines, including a housing and having an arbitrarily actuatable lever for adjusting injection quantity moving through a lever path and an adjustable stop associated with said lever for determining the minimum injection quantity characterized in that said stop includes a rotatable cam disc displayed perpendicularly relative to the plane of said lever path and a bimetallic spiral for rotational adjustment of said cam disc relative to said stop, wherein said stop further includes a spiral spring which serves to return said cam disc to a restoring position.
Claim 3
Dependent Claim
134 words
A fuel injection pump for internal combustion engines, including a housing and having an arbitrarily actuatable lever for adjusting injection quantity moving through a lever path and an adjustable stop associated with said lever for determining the minimum injection quantity characterized in that said stop includes a rotatable cam disc disposed perpendicularly relative to the plane of said lever path and a bimetallic spiral for rotational adjustment of said cam disc relative to said stop, wherein said housing further includes means to house said bimetallic spiral which engages a rotational lever carried by a shaft arranged to cooperate with said cam disc, wherein the fuel injection pump also includes a spiral spring disposed in said means to house said bimetallic spring, wherein said spiral spring includes a free end which engages the rotation lever.
Claim 4
Dependent Claim
134 words
A fuel injection pump for internal combustion engines, including a housing and having an arbitrarily actuatable lever for adjusting injection quantity moving through a lever path and an adjustable stop associated with said lever for determining the minimum injection quantity characterized in that said stop includes a rotatable cam disc disposed perpendicularly relative to the plane of said lever path and a bimetallic spiral for rotational adjustment of said cam disc relative to said stop, wherein said housing further includes means to house said bimetallic spiral which engages a rotational lever carried by a shaft arranged to cooperate with said cam disc, wherein the fuel injection pump also includes a spiral spring disposed in said means to house said bimetallic spring, wherein said spiral spring includes a free end which engages the rotation lever.
Claim 5
Dependent Claim
124 words
A fuel injection pump for internal combustion engines, including a housing and having an arbitrarily actuatable lever for adjusting injection quantity moving through a lever path and an adjustable stop associated with said lever for determining the minimum injection quantity characterized in that said stop includes a rotatable cam disc disposed perpendicularly relative to the plane of said lever path and a bimetallic spiral for rotational adjustment of said cam disc relative to said stop, wherein said housing further includes means to house said bimetallic spiral which engages a rotation lever carried by a shaft arranged to cooperate with said cam disc, and wherein said cam disc is spaced from said means to house said bimetallic spiral and a plastic disc is disposed therebetween.
Claim 6
Dependent Claim
124 words
A fuel injection pump for internal combustion engines, including a housing and having an arbitrarily actuatable lever for adjusting injection quantity moving through a lever path and an adjustable stop associated with said lever for determining the minimum injection quantity characterized in that said stop includes a rotatable cam disc disposed perpendicularly relative to the plane of said lever path and a bimetallic spiral for rotational adjustment of said cam disc relative to said stop, wherein said housing further includes means to house said bimetallic spiral which engages a rotation lever carried by a shaft arranged to cooperate with said cam disc, and wherein said cam disc is spaced from said means to house said bimetallic spiral and a plastic disc is disposed therebetween.
References Cited (Backward Citations)
US2708921A
Cited
GB755314A
Cited
US3033186A
Cited
US3003489A
Cited
GB1328805A
Cited
US3871344A
Cited
US4254753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-11 | 1986-04-12 | 1986-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-11 | 1990-04-12 | 1990-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-11 | 1994-04-12 | 1994-10-12 | $7700.00 | Window Closed / Lapsed |