Lambert FEHER, et al.
Microwave Ignition ICE
New Scientist #2212, p. 7 ( 13 November 1999 )
If you turn the combustion chamber of a car engine into a microwave oven you'll have a virtually pollution-free vehicle, says the Research Centre in Karlsruhe (WO 99/37911). The microwaves warm the petrol and air mixture before ignition and then generate a spark to ignite the mixture. The frequency of the microwaves is adjusted to match the resonant frequency of the chamber, which concentrates the energy. The technique is said to burn both rich and lean mixtures completely.
IGNITION AND COMBUSTION SUPPORT DEVICE USING MICROWAVE TECHNOLOGY FOR A GASOLINE ENGINE
Inventor(s): FEHER LAMBERT [DE]; LINK GUIDO [DE]; THUMM MANFRED [DE]
Applicant(s): KARLSRUHE FORSCHZENT [DE]; FEHER LAMBERT [DE]; LINK GUIDO [DE]; THUMM MANFRED [DE]
Classification:- international: F02P23/04; H01J23/18; F02P23/00; H01J23/16; (IPC1-7): F02P23/04; H01J23/18- European: F02P23/04B; H01J23/18
Also published as: DE19802745 (A1) // DE19802745 (C2) // AU2618799 (A)
Abstract -- The air-fuel mixture which is fed into the respective combustion chamber of a gasoline engine is ignited by a microwave impulse which is activated at the ignition point and which has a predetermined frequency and adjustable duration. At the same time, the combustion chamber acts as a resonator using microwave technology in which the injected microwave excites a mode or a mode mixture which operate the ignition process. After the first automatically executed combustion, a microwave impulse which has the same frequency and adjustable duration and which follows the ignition impulse supports the residual combustion of products which have not yet been completely combusted or remaining fuel which is still available. This is achieved by exciting at least one mode of a high or higher order.; Rich and lean air-gas mixtures are faultlessly ignited and are completely combusted with said ignition and combustion support device using microwave technology.