GB2256488A

GB2256488A - Low voltage contactless electronic distributor

Info

Publication number: GB2256488A
Application number: GB9102943A
Authority: GB
Inventors: Petr * Prokopius Josef
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-02-12
Filing date: 1991-02-12
Publication date: 1992-12-09
Also published as: GB9102943D0

Abstract

In a contactless low voltage electronic distributor for internal combustion engines, the conventional rotary arm and arrangement of mechanical contacts in the distributor cap for distribution of high tension voltage are replaced by low voltage switching circuits encapsulated in a metal body replacing the distributor cap and with use of at least one high tension coil per two engine cylinders. The distributor shown uses a rotary magnet (2) cooperating with at least one transducer (3) per two cylinders of the engine. Power transistors (10) for the ignition are clamped in the metal body (1) by flat springs (11). A circuit board (8) carries the transducer(s) (3) and light-emitting diodes (7) to serve as timing lights. <IMAGE>

Description

Title :- LOW VOLTAGE CONTACTLESS ELECTRONIC DISTRIBUTOR Techniral field- The present invention relates to combustion engines, in particular to an ignition system distributors.

Background art:- Presently used distributors for combustion engines are using arrangemets of rotary arm, mechanical contacts and high tension cables to distribute high voltage from one ignition coil to sparking plugs. A distributor cap and rotary arm are frequently cause of ignition fialure.

Presented art:- The present invention introduces contactless low voltage electronic distributor without the rotary arm and mechanical cntacts in the distributor cap which is eliminated and uses instead a metal body housing electronic circuitry for controlling ignition sparks for each cylinder and uses one high tension ignition coil per one cylinder of the engine.

In this arrangement. there is not present high tension voltage in the distributor at all. Also it uses one electronic switching circuit and c.ne timing light per each cylinder of the engine making the ignition system more reliable, accurate and easier to set up.

A specific embodiment of the Invention will now be described by way of example with reference to the accompanying drawing which is represented:1. Metal body 2. Permanent magnet 3. Magnetic transducer 4. Cable connector 5. Separator washer 6. Magnet carrier 7 Light emitting diode 8. Printed circuit board 9. Back washer 10. Power transistor 11. Flat spring 12. Bearings 13. Driver bush 14.Distributor spindle 15. Driver notch A low voltage contactless electronic distributor having a metal body (1) accommodating permanent magnet (2) within rotatably mounted in bearings (12) magnet carrier (6), above the magnet carrier (6) being a magnet operated transducers (3), at least one per two cylinders of the engine, separated from the permanent magnet b thin metal shield and a small gap allowing the magnet carrier (6) to b rotated Also accommodated within the metal body is printed circuit board (8) carrying the magnetic transducer (3), light emitting diodes (7) serving as a timing lights, cable connectors (4). power transistors (10) and other electronic components in the switching circuits, built on the printed circuit board (8) in plurality p at least one circuit per two c cylinders of f the engine.

The distributor spindle (14) is rotated in synchronisation with engine crankshaft and by means of a notch (15:' rotating the magnet carrier (6) accommodating the permanent magnet (2),the permanent magnet (2) triggering in sequence the magnetic transducers (3) which control the ignition circuits.

The power transistors (10) are clamped by flat springs (11) in the pockets provided in said metal body (1).The whole arrangement of the ignition circuits is encapsulated in the metal body (1) by suitable incapsulant.

Claims

1. - A low voltage contactless electronic distributor which is replacing rotor arm and mechanical contacts for distributing high tension voltage of a traditional distributor by a low voltage electronic switching circuits accommodated in the metal body replacing the traditional distributor cap and the rotor arm.

2. - A low voltage contactless electronic distributor as claimed in Claim t having a metal body, in the centre axis of the said metal body in bearings being rotatably mounted magnet carrier accomodating a permanent magnet at the headed top end of the said magnet carrier, above the magnet carrier separated by a small 1 air gap and a metal shield being in plurality magnet operated electronic transducers, at 1 least one per two cylinders of the engine, the electronic transducers being activated by the said permanent magnet in sequence when the said magnet carrier is rotating.

3. - A low voltage contactless electronic distributor as claimed in Clam t and Claim 2 where the said magnet operated electronic transducers are controlling electronic switching circuits for initiating ignition spark in sequence and synchronisation with engine crankshaft.

4. - A low voltage contactless electronic distributor as claimed in any preceding Claim where all electronic switching circuits in plurality, at least one said switching circuit per two cylinders, and power transistors are accommodated in the said metal body replacing the traditional distributor cap.

5. - A low voltage contactless electronic distributor as claimed in any preceding Claim having at least one timing light per two engine cylinders accommodated in the said metal bdy replacing the distributor cap.

6. - A low voltage contactless electronic distributor as claimed in any ny preceding Claim and as substantially described elsewhere in this invention and as illustrated on accompanying drawing.

Amendments to the claims have been filed as follows 1. - A low voltage contactless electronic distributor without the conventional distributor cap and without the conventional rotor arm switching low voltage supply to ignition coils, having replaced said distributor cap and said rotor arm by a metal body housing a magnet carrier rotably mounted in axis in at least one bearing, said magnet carrier accommodating axially a permanent magnet in its headed part, above said magnet cerrier being in plurality magnet operated transducers separated from the said permanent magnet by a thin metal shield and a small gap allowing said magnet carrier to be rotated by a distributor spindle by means of a notch in synchronisation with engine crankshaft, the said metal body further housing printed circuit board populated eith electronic components as to form plurality of electronic switching ignition circuits, at least one said switching electronic circuit per two engine cylinders, also housing plurality of light @@@@ing diodes for setting ignition timing, at least one said light emitting diode per two engine cylinders and further housing cable connectors and power transistors within the said metal body, said magnet operated transducers triggered in sequence controlling the said electronic switching ignition circuits, said electronic switching ignition circuits providing low voltage supply to ignition soils.

2. - A low voltage contractless electronic distribuitor as claimed in Claim 1 where for each engine cylinder is an independent electronic switching ignition circuit and timing light built within said metal body replacing said distributor cap and each of said engine cylinders has atributed one ignition soil.

3. - A low voltage contactless electronic distributor as claimed in Claim 1 and Claim 2 where two engine cylinders share one electronic switching ignition circuit and one timing light built within said metal body replacing said distributor cap and where two engine cylinders are sharing one ignition coil.

4. - A low voltage contactless electronic distributor as claimed in any preceding Claim which is distributing low voltage supply to ignition coils contrary to conventional distributor distributing high tension voltage to spark plugs.

5. - A low voltage contactless electronic distributor as claimed in any preceding Claim having built all necessary parts of said plurality of the electronic switching ignition circuits including power transistors within said metal body.

6. - A low voltage contactless electronic distributor as claimed in any preceding Claim housing power transistors in pockets provided in said metal body and where said power transistors are mounted by means of flat springs.

7. - A low voltage contactless electronic distributor as claimed in any preceding Claim and as substantially described elsewhere in this invention and as illustrated on accompanying drawing.