US4243004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection pump with electronically controlled full-load stop
Assignee: Robert Bosch GmbH
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Filing: 1979-01-24
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Granted: 1981-01-06
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Expires: 1999-01-24
Abstract
Abstract An injection pump with a full-load stop, preferably electronically controlled, which is adjustable against the force of a prestressed spring as a result of the control exerted by an electromagnet with a controllable stroke and which, when there is no current in the magnet, is displaceable by means of the spring into its terminal position which determines a reduced full-load quantity. Thus the maximum injection quantity is reduced in accordance with operating conditions and with the operational status of the engine; by this means, environmentally safer and smoother engine operation is possible at all operating conditions. The injection pump is also capable of continuing to function if the electrical or electronic parts fail.
Inventors
- 👤 Ernst Ritter
- 👤 Werner Faupel
- 👤 Karsten Hummel
- 👤 Johannes Locher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/44; F02M59/447
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
An injection pump for Diesel fuel injected internal combustion engines wherein the quantity of fuel injected is regulated by displacement of a regulator rod means, the stroke of said regulator rod means having a detent means and being de-limited by means of a full-load stop means, said full-load stop means being settable in accordance with operational values of said engine by electronic control means, further wherein said full-load stop means is coupled with an armature of an electromagnet to provide for a predetermined stroke thereof and further means carried by said full-load stop means arranged to cooperate with prestressed resilient means capable of holding said full-load stop means in a terminal position to reduce full-load quantity of fuel injected.
Claim 2
Dependent Claim
119 words
An injection pump for Diesel fuel injected internal combustion engines wherein the quantity of fuel injected is regulated by displacement of a regulator rod means, the stroke of said regulator rod means having a detent means and being de-limited by means of a full-load stop means, said full-load stop means being settable in accordance with operational values of said engine by electronic control means, further wherein said full-load stop means is coupled with an armature of an electromagnet to provide for a predetermined stroke thereof and further means carried by said full-load stop means arranged to cooperate with prestressed resilient means capable of holding said full-load stop means in a terminal position to reduce full-load quantity of fuel injected.
Claim 3
Dependent Claim
42 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 1, further wherein said terminal position of said full-load stop means can be set by means of a further stop means which limits the stroke of said armature.
Claim 4
Dependent Claim
35 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 1, further wherein at least one terminal position of said full-load stop means is settable relative to said regulator rod means.
Claim 5
Dependent Claim
35 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 1, further wherein the regulator rod means comprises a lost-motion device that is positioned in close proximity to a detent means.
Claim 6
Dependent Claim
40 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 4, further wherein said lost-motion device includes a pre-stressed spring element, said spring element arranged to control the maximum force exerted on said regulator rod means.
Claim 7
Dependent Claim
38 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 1, further wherein said full-load stop means comprises a system of housed levers one of which levers is pivotable by means of said electromagnet.
Claim 8
Dependent Claim
36 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 6, further wherein said pivotable lever is supported in an opening in said housing and said electromagnet is mounted on said housing.
Claim 9
Dependent Claim
29 words
An injection pump for Diesel fuel injected internal combustion engines as claimed in claim 1, further wherein said resilient means is adjustably mounted relative to said regulator rod means.
References Cited (Backward Citations)
US3263662A
Cited
DE2314450A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |