FUEL SUPPLY UNIT
1 Assignment
0 Petitions
Accused Products
Abstract
A fuel supply unit (1) is provided e.g. a carburetor or a low pressure injection system of an internal combustion engine. The fuel supply unit (1) includes a main air passage (3), which has a throttle valve (8, 9) mounted therein and the throttle valve (8, 9) includes a throttle shaft (8) extending between two to one another opposite located shaft sides (6, 7). A control module (2) for the fuel supply (2) is mounted to one (7) of the shaft sides (6, 7), which control module (2) includes throttle position detecting means (30; 300) for monitoring the position of the throttle valve (8, 9), and fuel valve means (60) for controlling the fuel supply to the main air passage (3). Also, an ignition system is provided which is able to control the ignition timing with respect to status of the at least one of the means (30; 300, 40, 60, 100) in the control module (2) in order to at least control the idle speed of the engine. The ignition system further being arranged to power at least one of the means (30; 300, 40, 60, 100) of the control module (2).
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Citations
98 Claims
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1-56. -56. (canceled)
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57. An electrically operated fluid valve for controlling a fluid flow in a fluid passage in a fuel supply unit, e.g. a carburetor or a low pressure injection system, of an internal combustion engine, the fluid valve comprising:
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an axially moveable plunger including a permanent magnet having its magnetic direction axially oriented providing a front pole and a real pole; an axially extending chamber with two opposite located valve seats limiting the axial movement of the plunger, a front valve seat facing the front pole and a rear valve seat facing the rear pole; at least one front ferromagnetic element at the front valve seat and a rear ferromagnetic element at the rear valve seat, enabling two stable valve positions, a closed position, when the plunger rests at the front valve seat, preventing fluid flow in the fluid passage, and an open position, when the plunger rests at least one rear valve seat, allowing fluid flow in the fluid passage, by designing the forces between the magnet and respectively ferromagnetic element so that the magnetic force between the front pole and the front ferromagnetic force between the front pole and the front ferromagnetic element is stronger than the magnetic force between the rear pole and the rear ferromagnetic element when the plunger is at the front valve seat and so that the magnetic force between the rear pole and the rear ferromagnetic element is stronger than the magnetic force between the front pole and the front ferromagnetic element when the plunger is at the rear valve seat; electromagnetically operating means to axially snap the plunger between the two stable valve positions when energized; and at the closed respectively open position the magnet of the plunger and the ferromagnetic element of the corresponding valve seat are distanced from direct contact with each other. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
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77. A fuel supply unit, e.g. a carburetor or a low pressure injection system of an internal combustion engine, comprising:
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a main air passage the main air passage having a throttle valve mounted therein including a throttle shaft extending between two to one another opposite located shaft sides, and a control module for the fuel supply mounted to one of the shaft sides, the control module including;
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throttle position detecting means for monitoring the position of the throttle valve, and a fuel valve for controlling the fuel supply to the main air passage, the fuel valve comprising;an axially moveable plunger including a permanent magnet having its magnetic direction axially oriented providing a front pole and a real pole; an axially extending chamber with two opposite located valve seats limiting the axial movement of the plunger, a front valve seat facing the front pole and a rear valve seat facing the rear pole; at least one front ferromagnetic element at the front valve seat and a rear ferromagnetic element at the rear valve seat, enabling two stable valve positions, a closed position, when the plunger rests at the front valve seat, preventing fluid flow in the fluid passage, and an open position, when the plunger rests at least one rear valve seat, allowing fluid flow in the fluid passage, by designing the forces between the magnet and respectively ferromagnetic element so that the magnetic force between the front pole and the front ferromagnetic force between the front pole and the front ferromagnetic element is stronger than the magnetic force between the rear pole and the rear ferromagnetic element when the plunger is at the front valve seat and so that the magnetic force between the rear pole and the rear ferromagnetic element is stronger than the magnetic force between the front pole and the front ferromagnetic element when the plunger is at the rear valve seat; electromagnetically operating means to axially snap the plunger between the two stable valve positions when energized; and at the closed respectively open position the magnet of the plunger and the ferromagnetic element of the corresponding valve seat are distanced from direct contact with each other wherein the fluid valve is a fuel valve for controlling the fuel supply to a main air passage of the fuel supply unit.
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78. A control module for a fuel supply unit, e.g. a carburetor or a low pressure injection system of an internal combustion engine including a throttle position detecting means for monitoring the position of a throttle valve mounted in a main air passage of the fuel supply unit, a fuel valve for controlling the fuel supply to the main air passage, the fuel valve comprising:
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an axially moveable plunger including a permanent magnet having its magnetic direction axially oriented providing a front pole and a real pole; an axially extending chamber with two opposite located valve seats limiting the axial movement of the plunger, a front valve seat facing the front pole and a rear valve seat facing the rear pole; at least one front ferromagnetic element at the front valve seat and a rear ferromagnetic element at the rear valve seat, enabling two stable valve positions, a closed position, when the plunger rests at the front valve seat, preventing fluid flow in the fluid passage, and an open position, when the plunger rests at least one rear valve seat, allowing fluid flow in the fluid passage, by designing the forces between the magnet and respectively ferromagnetic element so that the magnetic force between the front pole and the front ferromagnetic force between the front pole and the front ferromagnetic element is stronger than the magnetic force between the rear pole and the rear ferromagnetic element when the plunger is at the front valve seat and so that the magnetic force between the rear pole and the rear ferromagnetic element is stronger than the magnetic force between the front pole and the front ferromagnetic element when the plunger is at the rear valve seat; electromagnetically operating means to axially snap the plunger between the two stable valve positions when energized; and at the closed respectively open position the magnet of the plunger and the ferromagnetic element of the corresponding valve seat are distanced from direct contact with each other wherein the fluid valve is a fuel valve for controlling the fuel supply to a main air passage of the fuel supply unit. - View Dependent Claims (79)
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80. A throttle position sensor for sensing the position of a throttle valve and its throttle shaft in a fuel supply unit, e.g. a carburetor or a low pressure injection system, of an internal combustion engine, the internal combustion engine having an idle and a full throttle state, said throttle position sensor comprising:
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at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux; at least one magnetic sensing element, such as a digital hall sensor, for sensing the magnetic flux density generated by the magnetic flux generating means, said magnetic sensing element being configured to generate one of two possible values depending on whether the magnetic flux density has reached a threshold value or not; a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being movable in relation to the fixed portion and the fuel supply unit, said movable portion moving with the throttle shaft when it turns, the magnetic sensing element and thereby also the throttle position sensor being arranged to generate a unique value when actuated by the magnetic flux generating means in a first end position of the movable portion, corresponding to an end position of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected through motion transfer elements to have an adapted motion, and each magnetic sensing element being configured to generate one of two possible values depending on the magnetic flux density, and at least two magnetic sensing elements being mounted on either of the two portions, i.e. the fixed portion or the movable portion, and at least one magnetic flux generating means being mounted on the other of said two portions, or at least two magnetic flux generating means and the at least two magnetic sensing elements being mounted on the fixed portion, and a magnetic flux guide being mounted on or being part of the movable portion such that it moves with the throttle shaft and the throttle shaft and the throttle valve and the magnetic flux guide being arranged to strengthen or weaken the magnetic flux density at a magnetic sensing element, so as for the magnetic sensing elements and thereby also the throttle position sensor to generate unique values for both the first and second end position of the movable portion corresponding to the two predetermined end positions of the throttle shaft and the throttle valve, which in turn correspond to the idle and full throttle states of the internal combustion engine. - View Dependent Claims (81, 82)
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83. A throttle position sensor for sensing the position of a throttle valve and its throttle shaft in a fuel supply unit e.g. a carburetor or a low pressure injection system, of an internal combustion engine, the internal combustion engine having an idle and a full throttle state, said throttle position sensor comprising:
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a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being moveable in relation to the fixed portion and the fuel supply unit, and the fuel supply unit, and moves with the throttle shaft when it turns; at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux; a magnetic sensing element, such as an analogous hall sensor, for sensing the magnetic flux generated by the magnetic flux generating means, the magnetic sensing element and the magnetic flux generating means being arranged so that the magnetic flux density at the magnetic sensing element varies in a substantially linear manner with angular displacement of the movable portion, and therefore also with angular displacement of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected though motion transfer elements to have an adapted motion, and the magnetic flux generating means being mounted on either of the two portions, i.e. the fixed or the moveable portion, and the magnetic sensing element being mounted on the other of said two portions, so as for the magnetic sensing element and therefore also the throttle position sensor to generate continuous values depending on the position of the movable portion and therefore also on the position of the throttle shaft and the throttle valve. - View Dependent Claims (84, 85, 86, 87, 88, 89, 90, 91, 92)
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93. A fuel supply unit, e.g. a carburetor or a low pressure injection system of an internal combustion engine, comprising:
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a main air passage the main air passage having a throttle valve mounted therein including a throttle shaft extending between two to one another opposite located shaft sides, and a control module for the fuel supply mounted to one of the shaft sides, the control module including;
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fuel valve means for controlling the fuel supply to the main air passage, and a throttle position sensor for sensing the position of a throttle, said throttle position sensor comprising;at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux, —
at least one magnetic sensing element, such as a digital hall sensor, for sensing the magnetic flux density generated by the magnetic flux generating means, said magnetic sensing element being configured to generate one of two possible values depending on whether the magnetic flux density has reached a threshold value or not;a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being movable in relation to the fixed portion and the fuel supply unit, said movable portion moving with the throttle shaft when it turns, the magnetic sensing element and thereby also the throttle position sensor being arranged to generate a unique value when actuated by the magnetic flux generating means in a first end position of the movable portion, corresponding to an end position of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected through motion transfer elements to have an adapted motion, and each magnetic sensing element being configured to generate one of two possible values depending on the magnetic flux density, and at least two magnetic sensing elements being mounted on either of the two portions, i.e. the fixed portion or the movable portion, and at least one magnetic flux generating means being mounted on the other of said two portions, or at least two magnetic flux generating means and the at least two magnetic sensing elements being mounted on the fixed portion, and a magnetic flux guide being mounted on or being part of the movable portion such that it moves with the throttle shaft and the throttle shaft and the throttle valve and the magnetic flux guide being arranged to strengthen or weaken the magnetic flux density at a magnetic sensing element, so as for the magnetic sensing elements and thereby also the throttle position sensor to generate unique values for both the first and second end position of the movable portion corresponding to the two predetermined end positions of the throttle shaft and the throttle valve, which in turn correspond to the idle and full throttle states of the internal combustion engine.
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94. A control module for a fuel supply unit, e.g. a carburetor or a low pressure injection system of an internal combustion engine including:
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fuel valve means for controlling the fuel supply to the main air passage, and a throttle position sensor for sensing the position of a throttle, said throttle position sensor comprising;at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux, —
at least one magnetic sensing element, such as a digital hall sensor, for sensing the magnetic flux density generated by the magnetic flux generating means, said magnetic sensing element being configured to generate one of two possible values depending on whether the magnetic flux density has reached a threshold value or not;a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being movable in relation to the fixed portion and the fuel supply unit, said movable portion moving with the throttle shaft when it turns, the magnetic sensing element and thereby also the throttle position sensor being arranged to generate a unique value when actuated by the magnetic flux generating means in a first end position of the movable portion, corresponding to an end position of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected through motion transfer elements to have an adapted motion, and each magnetic sensing element being configured to generate one of two possible values depending on the magnetic flux density, and at least two magnetic sensing elements being mounted on either of the two portions, i.e. the fixed portion or the movable portion, and at least one magnetic flux generating means being mounted on the other of said two portions, or at least two magnetic flux generating means and the at least two magnetic sensing elements being mounted on the fixed portion, and a magnetic flux guide being mounted on or being part of the movable portion such that it moves with the throttle shaft and the throttle shaft and the throttle valve and the magnetic flux guide being arranged to strengthen or weaken the magnetic flux density at a magnetic sensing element, so as for the magnetic sensing elements and thereby also the throttle position sensor to generate unique values for both the first and second end position of the movable portion corresponding to the two predetermined end positions of the throttle shaft and the throttle valve, which in turn correspond to the idle and full throttle states of the internal combustion engine.
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95. An ignition system of an internal combustion engine, wherein the ignition system being in communication with a electronic control unit, the ignition system being able to control the ignition timing for the internal combustion engine, the ignition system being arranged to receive information from the electronic control unit about the status of at least one of means and said ignition system being arranged to control the ignition timing at least with respect to the status of the throttle position detecting means comprising:
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at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux, —
at least one magnetic sensing element, such as a digital hall sensor, for sensing the magnetic flux density generated by the magnetic flux generating means, said magnetic sensing element being configured to generate one of two possible values depending on whether the magnetic flux density has reached a threshold value or not;a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being movable in relation to the fixed portion and the fuel supply unit, said movable portion moving with the throttle shaft when it turns, the magnetic sensing element and thereby also the throttle position sensor being arranged to generate a unique value when actuated by the magnetic flux generating means in a first end position of the movable portion, corresponding to an end position of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected through motion transfer elements to have an adapted motion, and each magnetic sensing element being configured to generate one of two possible values depending on the magnetic flux density, and at least two magnetic sensing elements being mounted on either of the two portions, i.e. the fixed portion or the movable portion, and at least one magnetic flux generating means being mounted on the other of said two portions, or at least two magnetic flux generating means and the at least two magnetic sensing elements being mounted on the fixed portion, and a magnetic flux guide being mounted on or being part of the movable portion such that it moves with the throttle shaft and the throttle shaft and the throttle valve and the magnetic flux guide being arranged to strengthen or weaken the magnetic flux density at a magnetic sensing element, so as for the magnetic sensing elements and thereby also the throttle position sensor to generate unique values for both the first and second end position of the movable portion corresponding to the two predetermined end positions of the throttle shaft and the throttle valve, which in turn correspond to the idle and full throttle states of the internal combustion engine.
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96. A fuel supply unit, e.g. a carburetor or a low pressure injection system of an internal combustion engine, comprising:
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a main air passage the main air passage having a throttle valve mounted therein including a throttle shaft extending between two to one another opposite located shaft sides, and a control module for the fuel supply mounted to one of the shaft sides, the control module including;
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fuel valve means for controlling the fuel supply to the main air passage, and a throttle position sensor for sensing the position of a throttle, said throttle position sensor comprising;a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being moveable in relation to the fixed portion and the fuel supply unit, and the fuel supply unit, and moves with the throttle shaft when it turns; at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux; a magnetic sensing element, such as an analogous hall sensor, for sensing the magnetic flux generated by the magnetic flux generating means, the magnetic sensing element and the magnetic flux generating means being arranged so that the magnetic flux density at the magnetic sensing element varies in a substantially linear manner with angular displacement of the movable portion, and therefore also with angular displacement of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected though motion transfer elements to have an adapted motion, and the magnetic flux generating means being mounted on either of the two portions, i.e. the fixed or the moveable portion, and the magnetic sensing element being mounted on the other of said two portions, so as for the magnetic sensing element and therefore also the throttle position sensor to generate continuous values depending on the position of the movable portion and therefore also on the position of the throttle shaft and the throttle valve.
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97. A control module for a fuel supply unit, e.g. a carburetor or a low pressure injection system of an internal combustion engine including:
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fuel valve means for controlling the fuel supply to the main air passage, and a throttle position sensor for sensing the position of a throttle, said throttle position sensor comprising;a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being moveable in relation to the fixed portion and the fuel supply unit, and the fuel supply unit, and moves with the throttle shaft when it turns; at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux; a magnetic sensing element, such as an analogous hall sensor, for sensing the magnetic flux generated by the magnetic flux generating means, the magnetic sensing element and the magnetic flux generating means being arranged so that the magnetic flux density at the magnetic sensing element varies in a substantially linear manner with angular displacement of the movable portion, and therefore also with angular displacement of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected though motion transfer elements to have an adapted motion, and the magnetic flux generating means being mounted on either of the two portions, i.e. the fixed or the moveable portion, and the magnetic sensing element being mounted on the other of said two portions, so as for the magnetic sensing element and therefore also the throttle position sensor to generate continuous values depending on the position of the movable portion and therefore also on the position of the throttle shaft and the throttle valve.
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98. An ignition system of an internal combustion engine, wherein the ignition system being in communication with a electronic control unit, the ignition system being able to control the ignition timing for the internal combustion engine, the ignition system being arranged to receive information from the electronic control unit about the status of at least one of means and said ignition system being arranged to control the ignition timing at least with respect to the status of the throttle position detecting means comprising:
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a fixed portion, being fixed in relation to the fuel supply unit; a movable portion, being moveable in relation to the fixed portion and the fuel supply unit, and the fuel supply unit, and moves with the throttle shaft when it turns; at least one magnetic flux generating means, such as a magnet, for generating a magnetic flux; a magnetic sensing element, such as an analogous hall sensor, for sensing the magnetic flux generated by the magnetic flux generating means, the magnetic sensing element and the magnetic flux generating means being arranged so that the magnetic flux density at the magnetic sensing element varies in a substantially linear manner with angular displacement of the movable portion, and therefore also with angular displacement of the throttle shaft and the throttle valve, the throttle shaft and the movable portion being fixedly connected to each other or being connected though motion transfer elements to have an adapted motion, and the magnetic flux generating means being mounted on either of the two portions, i.e. the fixed or the moveable portion, and the magnetic sensing element being mounted on the other of said two portions, so as for the magnetic sensing element and therefore also the throttle position sensor to generate continuous values depending on the position of the movable portion and therefore also on the position of the throttle shaft and the throttle valve.
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Specification