US4192271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating apparatus for a fuel supply system for a mixture-compressing, externally ignited internal combustion engine
Assignee: Robert Bosch GmbH
•
Filing: 1978-05-02
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Granted: 1980-03-11
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Expires: 1998-05-02
Abstract
Abstract A regulating apparatus is proposed for a fuel supply system for a mixture-compressing, externally ignited internal combustion engine, which serves to enrich the fuel-air mixture furnished to the engine when it is started cold and while it warms up. The regulating apparatus comprises a pressure-regulating valve which sets the fuel pressure, the closing force of which on the movable valve part is influenced by a temperature-dependent element by means of a relay device and a regulating spring coaxially correlated therewith. Accordingly in a predetermined temperature range, the temperature-dependent element and the movable valve part are connected only by the regulating spring.
Inventors
- 👤 Klaus-Jurgen Peters
- 👤 Michael Wissmann
- 👤 Peter Schelhas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:35
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/30; F02M69/36; F02M69/42; F02M69/16; F02M69/18; F02M69/22; Y; Y10; Y10S; Y10S261/00; Y10S261/74
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A regulating apparatus for a fuel supply system for a mixture-compressing externally ignited internal combustion engine with a pressure-regulating valve, whose movable valve member is influenced from one direction by fuel pressure and a pressure spring and from the other by a temperature-dependent element which effects a temperature-dependent alteration of pressure, further wherein said temperature-dependent element and said movable valve member cooperate with a relay pin, a regulating spring means arranged to encompass said relay pin, means supporting said regulating spring means, said last-named means being associated with said temperature-dependent element and wherein said temperature-dependent element is connected with said movable valve member below a predetermined temperature indirectly by means of said regulating spring means and above said predetermined temperature also directly by means of said relay pin.
Claim 2
Dependent Claim
128 words
A regulating apparatus for a fuel supply system for a mixture-compressing externally ignited internal combustion engine with a pressure-regulating valve, whose movable valve member is influenced from one direction by fuel pressure and a pressure spring and from the other by a temperature-dependent element which effects a temperature-dependent alteration of pressure, further wherein said temperature-dependent element and said movable valve member cooperate with a relay pin, a regulating spring means arranged to encompass said relay pin, means supporting said regulating spring means, said last-named means being associated with said temperature-dependent element and wherein said temperature-dependent element is connected with said movable valve member below a predetermined temperature indirectly by means of said regulating spring means and above said predetermined temperature also directly by means of said relay pin.
Claim 3
Dependent Claim
27 words
A regulating apparatus as claimed in claim 1, wherein said regulating spring is positioned in a capsule member which engages a stop affixed to said relay pin.
Claim 4
Dependent Claim
22 words
A regulating apparatus as claimed in claim 2, wherein said temperature-dependent element includes a bimetallic arm heated by an electrical heating element.
Claim 5
Dependent Claim
25 words
A regulating apparatus as claimed in claim 3, wherein said bimetallic arm includes a tab having an activating pin vertically aligned with said relay pin.
Claim 6
Dependent Claim
25 words
A regulating apparatus as claimed in claim 4, wherein said activating pin engages said relay pin at temperatures above the operating temperature of the engine.
References Cited (Backward Citations)
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Cited
US3993034A
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US4122813A
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US4090486A
Cited
US4131099A
Cited
US4105000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |