Rotation sensing pulse control generator for triggered ignition systems and the like

Claim 2

An ignition system for selectively supplying power to an internal combustion engine comprising a first and second gated switch means, and first and second pulse generating means generating first and second pulse trains, said second gated switch means connecting said first gated switch means to said first pulse generating means, said second pulse generating means being connected to actuate said second switch means, the pulse trains of said first and second pulse generating means producing and including timed spaced pulse signals with the related signals offset and with the sequence being directly related to the direction of engine rotation and whereby the second plate generating means generates a pulse signal immediately prior to the generation of a pulse signal from the first pulse generating means in response to forwarD rotation to provide for transfer of the pulse of the first generating means to the first switch means.

Claim 3

The ignition system of claim 1 having a main power supply means, said gated switch means are solid state rectifiers having control gates and connecting such power supply means to fire the engine, said second rectifier being connected in series with the first pulse generating means to the gate of the first rectifier, and said second pulse generating means being connected to the gate of the second rectifier.

Claim 4

The ignition system of claim 1 wherein said first and second pulse generating means include corresponding first and second windings mounted in spaced relation to each other and having a common magnetic means sequentially coupled to the first and second windings for producing said timed spaced pulse trains.

Claim 5

The ignition system of claim 1 wherein said switch means are gated controlled rectifier means, and said second pulse generating means includes a timing means responsive to establishment of each pulse signal of the corresponding train to operatively prolong such signal to overlap with a subsequently generated corresponding signal of the first pulse generating means in response to said forward engine rotation.

Claim 6

The ignition system of claim 4 wherein said timing means includes a holding capacitor connected to said second pulse forming means in series with a blocking diode.

Claim 7

The ignition system of claim 1 including an ignition capacitor, a power supply connected to said ignition capacitor for charging of said capacitor to a preselected firing voltage, a pulse transformer having an output adapted to be connected to fire the engine, said first switch means being a firing controlled rectifier connected in series with said capacitor and said pulse transformer.

Claim 8

The ignition system of claim 1 having a main power supply means, said first gated switch means being a firing controlled rectifier having a gate and connecting such power supply means to fire the engine, a pulse generating means, said second gated switch means being a pilot controlled rectifier having a gate and connecting the first pulse generating means to the gate of the firing controlled rectifier, said second pulse generating means being connected to the gate of said second pilot controlled rectifier, and said second pulse generating means including means to extend the length of each pulse signal to maintain the pilot rectifier on for a selected period to provide for transfer of the pulse of the first generating means to the firing rectifier in response to said forward rotation.

Claim 9

The ignition system of claim 1 wherein said first and second pulse generating means includes a permanent magnet rotor and a dual winding stator, said rotor being coupled to be driven in synchronism with the operation of the engine and including at least one permanent magnet, said stator assembly being mounted adjacent said rotor and adjacent the path of said magnet, said stator assembly including a pair of circumferentially spaced windings including a firing winding and a direction sensing winding mounted in circumferentially spaced relation and separated by an angle substantially less than 180*, said sensing winding being mounted to couple to said magnet prior to the coupling of the firing winding to said magnet in response to forward engine rotation and subsequently in response to reverse engine rotation.

Claim 10

The ignition system of claim 2 wherein said first and second switch means are a firing controlled rectifier and a pilot controlled rectifier connected between the firing winding and the gate of the firing controlled rectifier, the opposite end of the firing winding and the cathode of the firing controlled rectifier being connected to each other, a diode connecting one side of the sensing winding to the gate of the pilot controlled rectifier, and the opposite end of said sensing winding being connected directly to the cathode of the pilot controlled rectifier, a holding capacitor connected directlY across the gate to cathode of the pilot controlled rectifier, the spacing between said firing winding and said sensing winding being such that the pilot controlled rectifier is fired by the coupling of the permanent magnet of the rotor with the sensing winding to establish and maintain conduction through the pilot controlled rectifier during the movement of the magnet through the angle to the firing winding and being sufficient to substantially dissipate the energy in the firing winding in response to opposite rotation of the rotor unit prior to the coupling of the magnet to the sensing winding.

Claim 11

An ignition system for an internal combustion engine, a pulse transformer having an output adapted to fire the engine, a firing controlled rectifier connected in series with said pulse transformer to control conduction therethrough, a control generating assembly including a permanent magnet rotor and a dual winding stator, said rotor being coupled to be driven in synchronism with the operation of the engine and including at least one permanent magnet, said stator assembly being mounted adjacent said rotor and adjacent the path of said magnet, said stator assembly including a pair of circumferentially spaced windings including a firing winding and a direction sensing winding mounted in circumferentially spaced relation and separated by an angle substantially less than 180*, said sensing winding being mounted to lead the engagement with said magnet prior to the coupling of the firing winding to said magnet, a pilot controlled rectifier connected between the firing winding and the gate of the firing controlled rectifier, a diode means connecting said sensing winding to the gate of the pilot controlled rectifier, a timing means connected to said sensing winding and connected to the gate of the pilot controlled rectifier to fire said rectifier, the spacing between said firing winding and said sensing winding being such that the pilot controlled rectifier is fired by the coupling of the permanent magnet of the rotor with the sensing winding to establish and maintain conductivity through the pilot controlled rectifier during the movement of the magnet through the angle to the firing winding and being sufficient to substantially dissipate the energy in the firing winding in response to opposite rotation of the rotor unit prior to the coupling of the magnet to the sensing winding.

Claim 12

An ignition system for an internal combustion engine, a pulse transformer having an output adapted to fire the engine, a firing controlled rectifier connected in series with said pulse transformer to control conduction therethrough, a control generating assembly including a permanent magnet rotor and a dual winding stator, said rotor being coupled to be driven in synchronism with the operation of the engine and including at least one permanent magnet, said stator assembly being mounted adjacent said rotor and adjacent the path of said magnet, said stator assembly including a pair of circumferentially spaced windings including a firing winding and a direction sensing winding mounted in circumferentially spaced relation and separated by an angle substantially less than 180*, said sensing winding being mounted to lead the engagement with said magnet prior to the coupling of the firing winding to said magnet, a pilot controlled rectifier connected between the firing winding and the gate of the firing controlled rectifier, a diode means connecting said sensing winding to the gate of the pilot controlled rectifier, a timing means connected to said sensing winding and connected to the gate of the pilot controlled rectifier to fire said rectifier, the spacing between said firing winding and said sensing winding being such that the pilot controlled rectifier is fired by the coupling of the permanent magnet of the rotor with the sensing winding to establish and maintain conductivity through the pilot controlled rectifier during the movement of the magnet through the angle to the firing winding and being sufficient to substantially dissipate the energy in the firing winding in response to opposite rotation of the rotor unit prior to the coupling of the magnet to the sensing winding.

Claim 13

The ignition system of claim 10 wherein said timing means is a capacitor connected in parallel with the sending winding and said diode means in series connection.