US3568652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanisms
Assignee: SRM Hydromekanik AB
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Filing: 1969-02-03
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Granted: 1971-03-09
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Expires: 1989-02-03
Abstract
Abstract An apparatus for regulating fuel consumption of an internal combustion engine. A valve mechanism forms a part of the connecting linkage between the throttle pedal and a fuel consumption regulating mechanism. Fluid impulses are provided by opening and closing passages through the valve mechanism in response to movement of the throttle pedal and the throttle linkage. Such a valve mechanism may include first and second valve passages, a valve means for placing each of these passages in an open condition or closed condition wherein a biasing force is exerted on the valve means for placing the passages in one of said conditions and an actuating member is provided for displacing the valve means against the biasing force such that in a first position of the actuating member, the first passage is open and the second passage is closed and in a second position of the actuating member the first and second passages are closed and in a third position of the actuating member the second passage is open and the first passage is closed. The elements are arranged such that the force required to displace the actuating member from the second position to the third position is greater than the force required to displace the actuating member from the first position to the second position.
Inventors
- 👤 Karl Gustav Ahlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:52
CPC Classifications
F; F02; F02D; F02D29/00; F02D2700/00; F02D2700/07; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
98 words
In combination, a combustion engine, a regulating mechanism for regulating the fuel consumption of the engine, a throttle pedal, a connecting linkage connecting the throttle pedal to the regulating mechanism to operate the same to regulate the fuel consumption of the engine, and a valve mechanism, fluid passages through the valve mechanism for passing fluid for producing fluid impulses, said passages being opened and closed in response to movement of the throttle pedal and the connecting linkage, said valve mechanism forming a part of said connecting linkage between the throttle pedal and the regulating mechanism for movement therewith.
Claim 2
Dependent Claim
98 words
In combination, a combustion engine, a regulating mechanism for regulating the fuel consumption of the engine, a throttle pedal, a connecting linkage connecting the throttle pedal to the regulating mechanism to operate the same to regulate the fuel consumption of the engine, and a valve mechanism, fluid passages through the valve mechanism for passing fluid for producing fluid impulses, said passages being opened and closed in response to movement of the throttle pedal and the connecting linkage, said valve mechanism forming a part of said connecting linkage between the throttle pedal and the regulating mechanism for movement therewith.
Claim 3
Dependent Claim
32 words
The invention of claim 1, including a hydraulic transmission means operatively connected to the engine, said valve mechanism being operatively connected to the said transmission to operate the transmission by said impulses.
Claim 4
Dependent Claim
158 words
The invention of claim 1, wherein said passages include first and second valve passages, valve means for placing each of said passages in an open condition or a closed condition, means for exerting a biasing force on the valve means for placing the passages in one of said conditions and an actuating member for displacing said valve means against said biasing force so that, in a first position of the actuating member the first valve passage is open and the second valve passage is closed, in a second position of the actuating member the first and second valve passages are closed and in a third position of the actuating member the second valve pAssage is open and the first valve passage is closed, the force required to displace the actuating member from the second position to the third position being greater than the force required to displace the actuating member from the first position to the second position.
Claim 5
Dependent Claim
41 words
A combination according to claim 3 wherein the valve means is enclosed in a casing and wherein the displaceable actuating member is connected to one part of the connecting linkage and said casing is connected to another part of said linkage.
Claim 6
Dependent Claim
51 words
A combination according to claim 3 wherein the first position of the actuating member corresponds to zero throttle and the first valve passage is then open to provide a fluid impulse, and wherein initial displacement of the actuating member closes said first valve passage without influencing the said engine regulating mechanism.
Claim 7
Dependent Claim
23 words
A combination according to claim 3 wherein a lost-motion device is included in the connection between the actuating member and the valve means.
Claim 8
Dependent Claim
50 words
A combination according to claim 3 including a transmission operatively connected to said engine, and wherein movement of the throttle linkage effects the setting of said transmission by means of fluid impulses which causes air to be supplied to or vented from said transmission through said first and second passages.
Claim 9
Dependent Claim
79 words
A combination according to claim 3 wherein the movement of the throttle linkage comprises an initial movement changing the position of the first valve passage, a second movement during which the valve means transfers said movement of the throttle linkage to the said regulating mechanism without changing the position of the first or second valve passages and a final movement wherein the force in the linkage exceeds a predetermined value and changes the position of the second valve passage.
Claim 10
Dependent Claim
21 words
A combination according to claim 3 wherein the valve means comprises separate valve members operated individually by the said actuating member.
Claim 11
Dependent Claim
98 words
A combination according to claim 9 including a casing, first and second chambers in said casing, first and second passages leading from the first and second chambers, respectively, to a source of pressure fluid, one of said valve members in each chamber, a spring means urging each valve member to close its respective passage and also to open an aperture from its respective chamber to atmosphere, and said actuating member being operable during its first and third positions to move the valve members of the first and second chambers, respectively, to open the first and second passages, respectively.
Claim 12
Dependent Claim
33 words
A combination according to claim 3 wherein the valve means comprises axially spaced parts of a common piston type valve member having sections of different diameter for opening and closing the said passages.
Claim 13
Dependent Claim
62 words
A combination according to claim 11 wherein the casing surrounding the said valve member is formed with channels for the passage of air, separated by O-rings of elastic material, said channels being arranged to intercommunicate by axial displacement of the piston type valve member, and said channels including said first and second passages, a pressure fluid supply channel and a vent channel.
Claim 14
Dependent Claim
89 words
A combination according to claim 12, including a transmission operatively connected to said engine, and wherein movement of the throttle linkage effects the setting of said transmission by means of said impulses which causes air to be supplied to or vented from said transmission through said first and second passages, and wherein intercommunication of the supply channel and the first channel leads pressure air to one member of the transmission and intercommunication of the supply channel and the third channel leads pressure air to another member of the transmission.
Claim 15
Dependent Claim
42 words
A combination according to claim 13 including a servovalve interposed in each path of flow of pressure air from the valve member to the respective transmission member, said servovalves forming large flow areas, whereby immediate setting of said tranSmission members is obtained.
Claim 16
Dependent Claim
81 words
A combination according to claim 11 including a relatively weak spring urging the valve member to the first position, and wherein the actuating member is operatively connected to the valve member by a lost-motion device and wherein the actuating member moves, on actuation of the throttle pedal, against the force of said weak spring to change the position of the first valve passage and subsequently move as a unit with the valve casing to actuate the regulating mechanism of the engine.
Claim 17
Dependent Claim
47 words
A combination according to claim 15 including an additional spring, stronger than said relatively weak spring, and wherein the actuating member, on reaching the end position of the regulating mechanism, is movable further against said additional spring pressure to change the position of the second valve passage.
Claim 18
Dependent Claim
19 words
A combination according to claim 3 wherein the actuating member is supported in an external casing by roller bearings.
Claim 19
Dependent Claim
52 words
A combination according to claim 3 wherein the movement into the third position of the actuating member to open the second valve passage takes place under a higher pressure than that necessary to move the said regulating mechanism to its maximum limiting position and corresponds to kickdown position of the said throttle.
Claim 20
Dependent Claim
51 words
A combination according to claim 3 having connections for flow of pressure fluid to and from the valve mechanism, said connections comprising U-shaped flexible pipes having the legs of the U-shaped flexible pipes having the legs of the U extending substantially parallel to the direction of displacement of the actuating member.
Claim 21
Dependent Claim
168 words
A valve mechanism having fluid passages, means for producing fluid impulses through the passages, said valve mechanism comprising first and second valve passages, a valve means for placing each of said passages in an open condition or a closed position, means for exerting a biasing force on the valve means for placing the passages in one of said conditions and an actuating member for displacing said valve means against said biasing force so that, in a first position of the actuating member the first valve passage is open and the second valve passage is closed, in a second position of the actuating member the first and second valve passages are closed and in a third position of the actuating member the second valve passage is open and the first valve passage is closed, the force required to displace the actuating member from the second position to the third position being greater than the force required to displace the actuating member from the first position to the second position.
Claim 22
Dependent Claim
168 words
A valve mechanism having fluid passages, means for producing fluid impulses through the passages, said valve mechanism comprising first and second valve passages, a valve means for placing each of said passages in an open condition or a closed position, means for exerting a biasing force on the valve means for placing the passages in one of said conditions and an actuating member for displacing said valve means against said biasing force so that, in a first position of the actuating member the first valve passage is open and the second valve passage is closed, in a second position of the actuating member the first and second valve passages are closed and in a third position of the actuating member the second valve passage is open and the first valve passage is closed, the force required to displace the actuating member from the second position to the third position being greater than the force required to displace the actuating member from the first position to the second position.
Claim 23
Dependent Claim
24 words
A valve mechanism according to claim 20, wherein a lost-motion device is included in the connection between the actuating member and the valve means.
Claim 24
Dependent Claim
22 words
A valve mechanism according to claim 20, wherein the valve means comprises separate valve members operated individually by the said actuating member.
Claim 25
Dependent Claim
99 words
A valve mechanism according to claim 22, including a casing, first and second chambers in said casing, first and second passages leading from the first and second chambers, respectively, to a source of pressure fluid, one of said valve members in each chamber, a spring means urging each valve member to close its respective passage and also to open an aperture from its respective chamber to atmosphere, and said actuating member being operable during its first and third positions to move the valve members of the first and second chambers, respectively, to open the first and second passages respectively.
Claim 26
Dependent Claim
34 words
A valve mechanism according to claim 20, wherein the valve means comprises axially spaced parts of a common piston type valve member having sections of different diameters for opening and closing the said passages.
Claim 27
Dependent Claim
63 words
A valve mechanism according to claim 24, wherein the casing surrounding the said valve member is formed with channels for the passage of air, separated by O-rings of elastic material, said channels being arranged to intercommunicate by axial dispLacement of the piston type valve member, and said channels including said first and second passages, a pressure fluid supply channel and a vent channel.
Claim 28
Dependent Claim
53 words
A valve mechanism according to claim 20, wherein the movement into the third position of the actuating member to open the second valve passage takes place under a higher pressure than that necessary to move the said regulating mechanism to its maximum limiting position and corresponds to kickdown position of the said throttle.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |