Patent EA-000834-B1 (EA)
Title: Method and device for re-accelerating a vehicle equipped with a high-pressure compressor
Inventor: NEGRE GUY
IPC: F02B75/10
Filed: 1997-10-06
Abstract: 1. A method for re-accelerating a vehicle equipped with an engine not emitting pollutants or an engine with  controllable pollutants comprising an independent combustion chamber (2) into which, when working with air, an additional amount of compressed air, not forming pollutants, is introduced from a main outer tank (23) where compressed air is stored at high pressure and essentially at a room temperature and said compressed air, free of fuel, coming from the intake and compression chamber (1) is injected into the combustion chamber, wherein said vehicle is equipped with an on-board high pressure compressor (25), being operated during decelerating and/or braking thus re-filling the main outer tank (23), characterized in that the high-pressure compressed air flow is derived and stored, maintaining said high pressure at high temperature to be used, when the vehicle is put back in driving phase by being injected in the combustion or expansion chamber of the engine (2). 2. A method of claim 1, characterized in that the compressed air is stored in a reservoir of fixed volume. 3. A method of claim 1, characterized in that the compressed air is stored in a reservoir of variable volume and when its filling is over to obtain and maintain practically constant values of pressure and air temperature, which are essentially close to the values provided by the compressor equipped on the vehicle. 4. A method of claim 3, characterized in that the variation of the stored air volume is controlled by the compressed air stored in the main outer tank (23). 5. A method of any claim 1 to 4, characterized in that a re-accelerating reservoir is used thermally, that is isolated or produced of an isolating material to maintain high values of temperature or pressure. 6. A device of any claim 1 to 5, characterized in that the compressed air coming from the compressor (25) is stored in the re-accelerating reservoir (32, 35) and is fed via a branch of an outlet pipe (27) of the compressor (25) between said pipe (27) and an injector (22A) positioned in the combustion or expansion chamber. 7. A device of claim 6, characterized in that the re-accelerating reservoir is a reservoir of fixed volume. 8. A device of claim 6, characterized in that the re-accelerating reservoir is a reservoir of variable volume. 9. A device of claim 6, characterized in that the re-accelerating reservoir comprises a hollow cylinder of small diameter (35) concentrically entering into a hollow cylinder of greater diameter (37), a two-step piston (38) is designed enabling for displacement with sliding in said cylinders, the small diameter cylinder (35) is connected from on side with the inlet pipe (27) to feed the compressed air from the compressor (25) via a branch pipe (27A) , and, from the other side is connected with the injector (22A) of the re-accelerating reservoir, wherein the greater diameter cylinder (37) comprises an inlet pipe (40) intended to feed the compressed air of mean pressure, which is fed from the main outer tank (23) with a very high pressure, throttled in a buffer reservoir (41), wherein the ratio of cylinder diameters is calculated so that the mean pressure in the greater diameter cylinder (37) is to maintain high pressure in the smaller cylinder (35) which is the re accelerating  reservoir and to feed an additional air into the injector (22A) of the re-accelerating reservoir (22A). 10. A device of any claim 6 to 9, characterized in that there is a valve (33) in t he outlet pipe (27) of the compressor and in the branch pipe (27A) to the re-accelerating reservoir, said reservoir enables from one side to derive the air flow during decelerating and/or braking phases coming from the compressor (25) towards the main outer tank (23) by opening the branch pipe (27A) and closing the outlet pipe (27) of the compressor (25), and, from the other side enables to close the branch pipe (27A) either to provide a free passage of the compressed air to the main outer tank (23) or, when the re-accelerating reservoir (35) is filled, to provide to use the compressor (25) during decelerating and/or braking phases, or during re-accelerating phase to direct the compressed air flow stored in the re-accelerating reservoir (35) to the injector (22A) of the re-accelerating phase, wherein the on-board compressor (25) is disconnected thus preventing any pressure loss towards the compressor (25) and/or main outer tank (23).