OZONE GENERATOR FOR INTERNAL COMBUSTION ENGINES

Abstract: In an ozone generator for petrol operated internal combustion engines, large quantities of ozone are generated from air that is ionized by the combined action of a self maintaining corona discharge within an electric field produced between a cylindrical electrode (1) and an internal electrode (3) mounted within a light alloy barrel half casting (14). The two electrodes are mounted coaxially between two ceramic discs (6) and (7) which support and position the electrodes within the barrel half casting. The light alloy barrel half casting has an ozone outlet orifice drilled in the centre of the closed end into which is screwed an ozone outlet adaptor (9). The high voltage necessary to produce the electric field between the electrodes is generated from a transistorized electric circuit incorporating a primary coil (16) and a secondary coil (17), (fig. 2), housed within a second light alloy barrel half casting (15). This casting incorporates air holes through which air is induced to flow when the ozone generator and the engine are in operation. A venturi adaptor (25) fits into the engine intake manifold (25) and the ozone generator is connected to it by an ozone resistant hose (24).

Description: i hJl-.'IvJAl'lOΛl Ozone Generator for Internal ombustion Jihgines. his invention-.relates to ozone generators for internal combustion engines wherein the general requirements for ideal combustion are > complete vaporization of the fuel, a constant supply of air in sufficient quantities, and efficient mixing of the fuel and air to support combustion. Most internal combustion engines are dependent on carburettors to achieve the mixing of the fuel and air, and irrespective of the degree 0 of sophistication o the carburettor, the engine is incapable of utilizing the fuel and air mixture to maximum advantage and incomplete combustion occurs. The result of this incomplete combustion are high fuel consumption and high levels of toxic exhaust gas emission. Ozone induced into the engine intake manifold below the carburettor ^> mixes with the fuel and air vapour and causes the fuel to be fully burnt thereby raising combustion efficiency. This gives improved fuel economy with a lower level of toxic exhaust gas emission. The object of this invention is to produce ozone in large quantities and this is achieved by using the ozone generator. 0 In order that this invention may be more readily understood, reference is made to the accompanying drawings which illustrate the construction of the ozone generator, and in which:- fig. 1 is a cross-section through the barrel half casting containing the cylindrical electrode: $ fig. 2 is a schematic diagram of the ozone generator and transistorized circuit: fig. 3 is three views of the ozone generator - ACTUAL SIZE, fig * . 4 is a schematic view of the ozone generator connected to the intake manifold: fig. is a cross-section through the vent ri adaptor: .For ease of reference to the drawings, those parts which correspond to the parts of the embodiment according to fig 1 are designated by the same reference numerals. An ozone generator for petrol operated internal combustion engines * contains a cylindrical electrode (1) with perforations (2) and an internal electrode (3) with sawtooth edges. (4). The electrodes are made of steel and Tungsten, Molybdenum or Chromium, or Steel coated wi±h an oxide film, all of which possess a high electrical resistance. Tne internal electrode (3) is located coaxially within the cylindrical electrode (1) and the two electrodes are supported and positioned between two ceramic discs (6) and (7). Screws (|-J2) clamp the ceramic discs to the internal electrode. The ceramic discs have a series of holes (7a) incorporated in their construction. These holes allow air to flow through the ozone generator when it is in operation. he cylindrical electrode has synthetic rubber ozone resistant insulators (5) fitted at each end. A coil spring (8) which serves both as a packing spring and earth is connected to the internal electrode (3) via the screw (13). The electrodes and ceramic discs assembly are retained within a light alloy barrel half casting (14) by three screws (18) which passes through the wall of the casting and act as a Butt stops behind the ceramic disc (ό). An ozone, outlet orifice (19) is drilled in the centre of the barrel half bowl into which is screwed an ozone outlet adaptor (9) comprising a ball valve (10) ? and ball valve housing (11)-- The ball is closed when the ozone generator is inoperative. The high voltage necessary to establish and maintain the corona discharge is supplied by a transistorized circuit incorporating a primary coil (16) and a secondary coil (17) fig * 2. The complete circuit is sealed within a second light alloy barrel half casting (1 ). The sealant is an ozone resistant silicon compound. A power supply lead-not shown, passes through a hole drilled in the barrel half casting, and an earthing screw (20) is located in the centre of the casting bowl. Three air holes (21 ) are drilled immediatly behind the joint flange of the barrel half casting (15) I -an these are covered by filter packs supported in the thin gauge metal filter housing (22). The filter housings are secured by the screws (13) used to clamp the two barrel halves together. Lugs formed integral with the barrel half castings form the mounting (28) for the ozone generator. ' BU EA _ OMPI A venturi adaptor (25) is positioned in the engine intake manifold imiiiediatly downstream of the carburettor (27), and an ozone resistant hose (24) connects the ozone outlet adaptor (9) to the venturi adaptor pipe (,2b). The power supply lead to the ozone generator is connected to an electri- cal power source that is activated when the ignition is switched on. When the engine is started, the -vacuum created in the engine intake manifold creates a pressure differential between the air holes (21) and the ozone outlet adaptor (9). 'The differential pressure causes the ball valve (10) to open and air is induced to flow into the ozone generator. The air flows in at the air holes (21), throtigh the holes (7a) in the ceramic discs and into the electric field between the cylindrical electrode (1 ) and the internal electrode (3). The high voltage applied to the cylindrical electrode (1 ) arcs across to the internal electrode (3) where-.the sawteeth (4) create irregular distribution of the electric field between the two electrodes so as to generate a streamer corona discharge. The air passing through this electric field is ionized, and ozone is generated which flows throtigh the holes (7a) in the ceramic disc (7) and on into the engine intake manifold via the ozone outlet adaptor (9), the ozone resistant hose (24) and the venturi adaptor (25). The perforations (2) in the cylindrical electrodes (1 ) help to stabilize the corona discharge, reduce the capacitance between the electrodes, prevent short circuit discharge, and surpress saturation caused by the discharge of secondary electrons.

Claims: 95 CLAIMS 1. An ozone generator for petrol operated internal combustion engines, that utilizes a self maintaining corona discharge within an electrical field produced between a perforated cylindrical electrode and a sawtoothed internal electrode to ionize air that is 100 induced to flow through the ozone generator. 2. An ozone generator as claimed in claim 1, wherein the perforated cylindrical electrode can be a perforated disc electrode. 3. An ozone generator as claimed in claim 1, wherein the sawtooth.-i internal electrode can be of square, triangle, circular, or multiiiided 105 cross-section. 4. An ozone generator as claimed in claim 1 , wherein the sawteeth on the internal electrode can be upright or slanting. 5. An ozone generator as claimed in claim 1, wherein the sawteeth on the internal electrode can be in a straight line or displaced alter- 110 natively to the right and left. 6. An ozone generator as claimed in claim 1, wherein the barrel half casting containing the electrodes can be unlined or lined with a silicon lining. 7. An ozone generator as claimed in claim 1, wherein the barrel half 115 joint flanges can be ϋutt jointed flanges or stepped joint flanges. 8. An ozone generator as claimed in claim 1, wherein the air holes can be less than or greater than three. 9. An ozone generator as claimed in claim 1, wherein the air holes can be in either of the barrel half castings. 120 10. An ozone generator as claimed in claim 1, wherein the barrel half casting can be joined by screws, bolts, clamps, or a clamp ring. 11. An ozone generator for petrol operated internal combustion engines, substantially as described with reference to and as shown in the accompanying drawings. !ϊURE OMPI

Inventors: SATO YUKIYA, SATO, YUKIYA
Applicants: OKAMOTO YUTAKA, SCOTT LAWS COLIN JOHN, OKAMOTO, YUTAKA, SCOTT-LAWS, COLIN, JOHN
Application year: 1983
Main classification: C01B13
IPC codes: C01B13, F02M25, H02K5, H02K7