Fuel supply system for an internal combustion engine

Claim 2

A fuel supply system in an internal combustion engine comprising a fuel injection element mounted within the engine manifold and forming a transverse impact modulator having first and second supply nozzles opposedly disposed one nozzle of which introduces compressed air and the other nozzle of which introduces fuel to form opposing impacting air jet and fuel jet, said transverse impact modulator having a drain for the fuel jet which is to be drained when injection is not required, a control means connected to said supply nozzles to control the relative strength of said jets of said fuel injection element, said modulator having a control jet nozzle formed at a right angle in the vicinity of the first main supply nozzle and engaging the jet to deflect relative to the opposing jet, a normal running stage circuit means having a pulse output related to the number of revolutions of said engine and connected to said control air jet nozzle of said fuel injection element as a pulse signal, and a mixed air supply stage circuit means connected to said opposed nozzles which supply fuel and air to said fuel injection element and having a control valve means actuated in response to the negative pressure of engine manifold to control the relative supply of fuel and air to said fuel injection element.

Claim 3

The fuel supply system according to claim 1, having a coasting cut stage circuit including a fluidic proportional means coupled to the nozzles to establish a control signal, and a transverse impact modulator having a control jet nozzle connected to said proportional means and having an output means connected to the control nozzles of the fuel injection element controlling the injection of fuel when in coasting operation of the engine.

Claim 4

A fuel supply system according to claim 1, wherein said normal running stage circuit means including an electronic signal forming means producing a series of pulses in response to the crank shaft of the engine and having time width which is in iNverse proportion to the speed of rotation of the engine, and a solenoid valve connected to the pulse forming means and having an output connected to said air jet nozzle so as to control the air pressure pulse supplied to the fuel injection element.

Claim 5

The apparatus of claim 1 wherein said fuel injection element is mounted with nozzles parallel to the manifold and establishing opposing streams parallel to the fluid flow through the manifold.

Claim 6

A fuel supply system in an internal combustion enging comprising a fuel injection element mounted within the engine manifold and being a summing impact modulator having nozzles opposedly disposed one nozzle of which introduces essentially only compressed air and the other nozzle of which introduces fuel to form an impacting air jet and fuel jet, a control means to control the relative strength of said jet of said jet of said fuel injection element, said summing impact modulator having a drain means for draining of the fuel jet when injection is not required, a normal running stage circuit means having a pulse output related to the number of revolutions of said engine and connected to said control means for said fuel injection element as a pulse signal, and said control means is coupled to vary the pressure level of the air jet pulsewise between low or high when in response to injection of a pulse signal output in the normal running stage circuit, a mixed air supply stage circuit means connected to said opposed nozzles which supply fuel and air to said fuel injection element, a coasting cut stage circuit means coupled to the nozzles and controlling the injection of fuel when in coasting operation of the engine, said air jet having a controlled pressure by means of an air pressure control valve in the mixed air supply stage circuit and by controlled pressure means in the coasting cut stage circuit.

Claim 7

A fuel supply system in an internal combustion enging comprising a fuel injection element mounted within the engine manifold and being a summing impact modulator having nozzles opposedly disposed one nozzle of which introduces essentially only compressed air and the other nozzle of which introduces fuel to form an impacting air jet and fuel jet, a control means to control the relative strength of said jet of said jet of said fuel injection element, said summing impact modulator having a drain means for draining of the fuel jet when injection is not required, a normal running stage circuit means having a pulse output related to the number of revolutions of said engine and connected to said control means for said fuel injection element as a pulse signal, and said control means is coupled to vary the pressure level of the air jet pulsewise between low or high when in response to injection of a pulse signal output in the normal running stage circuit, a mixed air supply stage circuit means connected to said opposed nozzles which supply fuel and air to said fuel injection element, a coasting cut stage circuit means coupled to the nozzles and controlling the injection of fuel when in coasting operation of the engine, said air jet having a controlled pressure by means of an air pressure control valve in the mixed air supply stage circuit and by controlled pressure means in the coasting cut stage circuit.

Claim 8

A fuel supply system in an internal combustion engine comprising a fuel injection element mounted within the engine manifold and having a pair of opposed nozzles opposedly disposed and one of which is connected to introduce essentially only compressed air and the second of which is connected to introduce fuel to form opposed and impacting air and fuel jets which impact within the engine manifold and having a control means for controlling the relative strength of said jets and the position of impact, air supply means coupled to the first of said nozzles, fuel supply means coupled to the second of said nozzles, a control means for controlling the relative strength of said jets, and a normal running stage control means connected to the engine and establishing a pulsed output control signal in accordance with the operating speed of the internal combustion engine, said normal running stage control means including a rotating control means coupled to the engine and rotated in synchronism therewith, said rotating control means having a fluid supply means establishing a fluid stream and means responsive to the speed of the rotation to interrupt said stream and establish first and second time spaced fluid control signals, the first of said time spaced fluid control signals having a predetermined width adapted to establish a corresponding on-off control signal to the fuel supply control means, connecting means connecting said first time spaced fluid control signal to said control means, and means connecting the second of said time spaced fluid control signals being interconnected to said connecting means to modify said first timing control signal to produce a predetermined variation in the width of said first timing control signal and to thereby control the fuel injection control element in an inverse proportion to the speed of the rotation of the engine to control the air fuel mixture supplied to the engine in accordance with the speed of the engine.

Claim 9

A fuel supply system in an internal combustion engine comprising a fuel injection element mounted within the engine manifold and having a pair of opposed nozzles opposedly disposed and one of which is connected to introduce essentially only compressed air and the second of which is connected to introduce fuel to form opposed and impacting air and fuel jets which impact within the engine manifold and having a control means for controlling the relative strength of said jets and the position of impact, air supply means coupled to the first of said nozzles, fuel supply means coupled to the second of said nozzles, a control means for controlling the relative strength of said jets, and a normal running stage control means connected to the engine and establishing a pulsed output control signal in accordance with the operating speed of the internal combustion engine, said normal running stage control means including a rotating control means coupled to the engine and rotated in synchronism therewith, said rotating control means having a fluid supply means establishing a fluid stream and means responsive to the speed of the rotation to interrupt said stream and establish first and second time spaced fluid control signals, the first of said time spaced fluid control signals having a predetermined width adapted to establish a corresponding on-off control signal to the fuel supply control means, connecting means connecting said first time spaced fluid control signal to said control means, and means connecting the second of said time spaced fluid control signals being interconnected to said connecting means to modify said first timing control signal to produce a predetermined variation in the width of said first timing control signal and to thereby control the fuel injection control element in an inverse proportion to the speed of the rotation of the engine to control the air fuel mixture supplied to the engine in accordance with the speed of the engine.

Claim 10

The apparatus of claim 6 wherein said rotating control means includes a rotating element located between a supply nozzle and a receiving nozzle having a pair of physically spaced coupling openings, said nozzles and said stream aligned with said openings and interrupted by the element and sequentially coupled to the corresponding opening to thereby produce corresponding said first and second time spaced output signals for each revolution of the rotating element.