Abstract: A method for increasing the nitrogen oxide emissions by either removing or modifying fuel rich nitrogen oxide (NOx) reduction processes thereby improving combustion efficiencies especially with low volatile low sulfur coals, and remove unburned carbon, reduce sulfur dioxide and reducing carbon dioxide emissions, while using post-primary combustion urea or ammonia injection with or without a reburn fuel NOx reducing process to restore NOx to regulated emission levels. Furthermore, adding lime or limestone to the urea or ammonia solution to further reduce SO2 and to increase the concentration of the carbon free fly ash to cementitious concentrations. Furthermore, by proper number and disposition of the injectors in the post combustion zone and by further water diluting the mixture, this NOx reduction process is effective at substantially higher gas temperatures than conventional Selective Non-Catalytic NOx Reduction and with no ammonia slip. This method significantly increases the profitability of power plants.

Abstract: A method of operating an internal combustion engine having an; electromagnetically driven intake valves for a vehicle. With the method, deviation of an opening operation of the electromagnetically driven intake valve in response to a command signal for opening the intake valve from a predetermined characteristic is detected, and at least one of parameters used for controlling operation of the internal combustion engine is corrected so as to reduce a change in an intake air charging state in which the internal combustion engine is charge with the intake air. A valve closing timing of the intake valve or a valve closing timing of the exhaust valve that cooperates with the intake valve may be used as parameters to be corrected.

Abstract: A cleaning method for a flame detector of a gas turbine activating combustor, comprising branching control air for forcing a spark plug of an ignition system into the gas turbine activating combustor, and blowing the branched control air against the respective inner surfaces of light sensor glasses of a flame detector, thereby blowing off dust or soot from the glass.

Abstract: A louver cover is provided for maximizing the decorative value of a louver used in louvered window coverings and the like. The louver cover includes an elongate tubular body 10 having dimensions sufficient to enclose a louver 14 therein. The louver cover is attached to the louver 14 contained therein by snaps 21 provided on one end of the tubular body 10. The louver cover is constructed of a flexible fabric. The flexible fabric is dyed or imprinted with an image. When associated with a plurality of louvers, the plurality of louver covers are positioned and colored to provide a large composite image to viewers on either side of the louvered covering. The louver cover provides for the variation of the color and function of the louvers presently in the consumer home.