Patent US3973536A successfully refreshed from Google Patents.
US3973536A
Expired / Lapsed
US
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Device for feeding fuel to a diesel engine
Assignee: Van Doorne S Bedrijfswagenfabriek Daf BV
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Filing: 1974-05-28
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Granted: 1976-08-10
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Expires: 1994-05-28
Abstract
Abstract A device for feeding fuel to a diesel engine including a fuel storage tank, a feed pump provided in a conduit between the fuel storage tank and the engine, and an injection pump for atomization. The injection pump is provided with a pressure control valve for reducing the excessive pressure to that of the pressure prevailing in the conduits and with a device for measuring the fuel consumption. Means are provided for substantially equalizing the temperature of the fuel in a return conduit and in the feed conduit, and for holding the fuel under excessive pressure in the feed conduit.
Inventors
- 👤 Wim Zelders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:35
CPC Classifications
F; F02; F02M; F02M53/00; F02M55/00; F02M55/007; G; G01; G01F; G01F9/00; F02B; F02B3/00; F02B3/06; F02D; F02D2200/00; F02D2200/02; F02D2200/06; F02D2200/0606
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
In a fuel system for feeding fuel to a diesel engine and including a fuel storage tank, a fuel feed line including a feed pump leading from said storage tank to an injection pump connected to at least one atomizer, a return line for returning non-injected fuel to the fuel supply, a pressure control valve connected to said injection pump for reducing the pressure in said return line, and a flow measuring means in said fuel feed line for measuring consumption of fuel from said storage tank; the improvement comprising: means connected to said return line for equalizing the temperature of the fuel therein with the temperature of the fuel in said feed line; and means connected to said feed line for creating an over pressure condition in the fuel therein.
Claim 2
Dependent Claim
131 words
In a fuel system for feeding fuel to a diesel engine and including a fuel storage tank, a fuel feed line including a feed pump leading from said storage tank to an injection pump connected to at least one atomizer, a return line for returning non-injected fuel to the fuel supply, a pressure control valve connected to said injection pump for reducing the pressure in said return line, and a flow measuring means in said fuel feed line for measuring consumption of fuel from said storage tank; the improvement comprising: means connected to said return line for equalizing the temperature of the fuel therein with the temperature of the fuel in said feed line; and means connected to said feed line for creating an over pressure condition in the fuel therein.
Claim 3
Dependent Claim
14 words
The improvement claimed in claim 1, wherein said temperature equalizing means comprises a cooler.
Claim 4
Dependent Claim
18 words
The improvement claimed in claim 2, wherein said cooler is a heat exchanger positioned in said storage tank.
Claim 5
Dependent Claim
49 words
The improvement claimed in claim 1, wherein over pressure creating means comprises a further feed pump in said feed line, the capacity of said further feed pump being greater than the maximum fuel consumption; and an excess flow valve in said return line and connected to said feed line.
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) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |