Patent US4483285A successfully refreshed from Google Patents.
US4483285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel engine cold starting arrangement
Assignee: Deere and Co
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Filing: 1983-03-01
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Granted: 1984-11-20
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Expires: 2003-03-01
Abstract
Abstract A return line communicates excess fuel from the injectors of a diesel engine to a fuel tank and is connected to a nipple on a filler pipe of the fuel tank. A dam wall is provided inside the pipe over an inlet from the nipple and forms a small reservoir for fuel which can be fed via a T-connection and branch line to a known nozzle and ignition system which burns fuel in the intake manifold to facilitate cold starting.
Inventors
- 👤 Hans Donnerstag
- 👤 Werner Donnerstag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
F; F02; F02N; F02N19/00; F02N19/02; F02N19/04; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
In a diesel engine cold starting system having a fuel injector, a main fuel tank, a return line for returning fuel from the injector to the main tank via a return inlet, a reservoir for storing a quantity of cold start fuel, burning means for burning fuel in an intake manifold of the engine and a branch line for communicating fuel from the reservoir to the burning means, the improvement wherein: the reservoir is formed by a wall which forms a dam around the return inlet so that a quantity of fuel for cold starting trapped by the dam flows to the burning means via a portion of the return line and via the branch line.
Claim 2
Dependent Claim
116 words
In a diesel engine cold starting system having a fuel injector, a main fuel tank, a return line for returning fuel from the injector to the main tank via a return inlet, a reservoir for storing a quantity of cold start fuel, burning means for burning fuel in an intake manifold of the engine and a branch line for communicating fuel from the reservoir to the burning means, the improvement wherein: the reservoir is formed by a wall which forms a dam around the return inlet so that a quantity of fuel for cold starting trapped by the dam flows to the burning means via a portion of the return line and via the branch line.
Claim 3
Dependent Claim
37 words
The invention of claim 1, wherein: the main tank receives fuel via a filler pipe, the return inlet being located in the filler pipe, and the dam wall is located on the inside of the filler pipe.
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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |