US3592177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel-injection apparatus for internal-combustion engines
Assignee: Rockwell Collins Deutschland GmbH
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Filing: 1969-10-06
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Granted: 1971-07-13
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Expires: 1989-10-06
Abstract
Abstract Fuel-injection apparatus for use with internal-combustion engines having an intermediate reservoir which stores and makes available the quantity of fuel to be injected for each fuelinjection operation. The intermediate reservoir is provided with two chambers separated from each other by a movable dividing wall. The first of these chambers is connected between a pressurized fuel supply and/or the second of these chambers. The second chamber is selectively connected between the first chamber and at least one fuel-injection nozzle. A spring is arranged in the second chamber to bias the movable wall in the direction of enlargement of the second chamber. The first chamber may be selectively connected by one three-way valve or by two one-way valves. Means are provided to adjust the quantity of fuel injected in response to the requirements of the engine. The devices may be used individually, or grouped together for multicylinder engines.
Inventors
- 👤 Heinz Wehde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:10
CPC Classifications
F; F02; F02D; F02D9/00; F02M; F02M59/00; F02M59/12; F02M59/14; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0261; F02D2700/0266; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1323
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
172 words
Fuel-injection apparatus for internal-combustion engines comprising, in combination: a. reservoir means comprising: 1. a housing, and 2. dividing means arranged within said housing and dividing the same into first and second chambers, said dividing means being movable to and fro to increase the volume of one of said chambers while decreasing the volume of the other of said chambers, 3. spring means arranged within said housing and biasing said dividing means in the direction of enlargement of said second chamber; b. injection means connected to said second chamber to inject fuel into at least one engine cylinder; c. connection means, connected to said first chamber, to a constant-pressure, pressurized fuel supply and to said second chamber for establishing communication between said first chamber and said fuel supply, and for establishing selective communication between said first chamber and said second chamber for equalizing the pressure in said first and second chambers and permitting said dividing means to be moved in the direction of enlargement of said second chamber only by said spring means.
Claim 2
Dependent Claim
172 words
Fuel-injection apparatus for internal-combustion engines comprising, in combination: a. reservoir means comprising: 1. a housing, and 2. dividing means arranged within said housing and dividing the same into first and second chambers, said dividing means being movable to and fro to increase the volume of one of said chambers while decreasing the volume of the other of said chambers, 3. spring means arranged within said housing and biasing said dividing means in the direction of enlargement of said second chamber; b. injection means connected to said second chamber to inject fuel into at least one engine cylinder; c. connection means, connected to said first chamber, to a constant-pressure, pressurized fuel supply and to said second chamber for establishing communication between said first chamber and said fuel supply, and for establishing selective communication between said first chamber and said second chamber for equalizing the pressure in said first and second chambers and permitting said dividing means to be moved in the direction of enlargement of said second chamber only by said spring means.
Claim 3
Dependent Claim
42 words
dividing means arranged within said housing and dividing the same into first and second chambers, said dividing means being movable to and fro to increase the volume of one of said chambers while decreasing the volume of the other of said chambers,
Claim 4
Dependent Claim
42 words
dividing means arranged within said housing and dividing the same into first and second chambers, said dividing means being movable to and fro to increase the volume of one of said chambers while decreasing the volume of the other of said chambers,
Claim 5
Dependent Claim
15 words
Fuel-injection device as defined in claim 1 wherein said connection means includes a three-way valve.
Claim 6
Dependent Claim
123 words
Fuel-injection device as defined in claim 2, further comprising: d. means, connected to said reservoir means, for producing a first electrical signal having a value which is dependent upon the position of said dividing means; e. means for producing a second electrical signal having a value which is dependent upon the desired quantity of fuel to be injected into the engine; f. comparator means, connected to receive said first and second electrical signal, for producing a third electrical signal which is dependent upon the relative values of said first and second electrical signals; g. control means, connected to said comparator means, and to said three-way valve, for stopping the movement of said dividing means when the desired quantity of fuel has been injected.
Claim 7
Dependent Claim
112 words
spring means arranged within said housing and biasing said dividing means in the direction of enlargement of said second chamber; b. injection means connected to said second chamber to inject fuel into at least one engine cylinder; c. connection means, connected to said first chamber, to a constant-pressure, pressurized fuel supply and to said second chamber for establishing communication between said first chamber and said fuel supply, and for establishing selective communication between said first chamber and said second chamber for equalizing the pressure in said first and second chambers and permitting said dividing means to be moved in the direction of enlargement of said second chamber only by said spring means.
Claim 8
Dependent Claim
112 words
spring means arranged within said housing and biasing said dividing means in the direction of enlargement of said second chamber; b. injection means connected to said second chamber to inject fuel into at least one engine cylinder; c. connection means, connected to said first chamber, to a constant-pressure, pressurized fuel supply and to said second chamber for establishing communication between said first chamber and said fuel supply, and for establishing selective communication between said first chamber and said second chamber for equalizing the pressure in said first and second chambers and permitting said dividing means to be moved in the direction of enlargement of said second chamber only by said spring means.
Claim 9
Dependent Claim
31 words
Fuel injection device as defined in claim 1 wherein said connection means includes two two-way valves, one of said two-way vaLves, being connected between said first chamber and said second chamber.
Claim 10
Dependent Claim
28 words
Fuel injection device as defined in claim 4 wherein the other of said two two-way valves is connected between said first chamber and said constant-pressure, pressurized fuel supply.
Claim 11
Dependent Claim
26 words
Fuel injection device as defined in claim 4 wherein the other of said two two-way valves is connected between said second chamber and said injection means.
Claim 12
Dependent Claim
14 words
Fuel injection device as defined in claim 4 wherein said valves are electromagnetic valves.
Claim 13
Dependent Claim
131 words
Fuel injection device as defined in claim 4, further comprising: d. means, connected to said reservoir means, for producing a first electrical signal having a value which is dependent upon the volume of said second chamber. e. means for producing a second electrical signal having a value which is dependent upon the desired quantity of fuel to be injected into the engine; f. comparator means, connected to receive said first and second electrical signal, for producing a third electrical signal which is dependent upon the relative values of said first and second electrical signals; g. control means, connected to said comparator means, and to said first valve, for interrupting the filling of said second chamber when the volume thereof is substantially equal to the volume of said desired quantity of fuel.
Claim 14
Dependent Claim
38 words
Fuel injection device as defined in claim 4, further comprising: d. timing means which is controlled by the operational parameters of said engine and which controls the opening times, and thus the fuel dosaging, of said first valve.
Claim 15
Dependent Claim
38 words
Fuel injection device as defined in claim 1 wherein said reservoir means includes a plurality of housing, with a plurality of said second chambers connected with one another so that they can be emptied through said injection means.
Claim 16
Dependent Claim
26 words
Fuel injection device as defined in claim 10 wherein said injection means includes a common injection line connected to a plurality of electromagnetically controlled injection valve.
Claim 17
Dependent Claim
14 words
Fuel injection device as defined in claim 10 wherein said housing have different capacities.
Claim 18
Dependent Claim
35 words
Fuel injection device as defined in claim 10 comprising selecting means by which dependent upon the desired quantity of fuel those housing are selected for evacuation whose capacities together approach the desired quantity of fuel.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |