Abstract: A system and method for controlling a rotary burner of the type in which attempts have been made to maintain predetermined differential pressures between steam and fuel delivered thereto. The fuel flow is adjusted to provide a given heat release; and without regard to pressure, the steam flow is adjusted in accordance with a predetermined ratio to correspond to the given fuel flow.

Abstract: A combustion apparatus has an exhaust system, a fuel-supply system, and an air-supply system. The ratio of fuel-to-air supplied to the apparatus is adjustable in either direction in response to control information. A temperature signal is developed which has a value proportional to the combustion-produced temperature. A first sample of that temperature signal selected during a first time interval is compared with a second sample of the temperature signal developed during a later time interval. The comparison serves to produce the control information that causes adjustment of the fuel-to-air ratio in the direction seeking a maximum of combustion-produced temperature. Digital logic circuitry is specifically utilized for the purpose of producing the desired control information.

Abstract: A method for automatically controlling the air ratio of a combustion process by adjustment of the fuel-air mixture as function of the air number, the air number of the exhaust gas being measured with a sensor which is particularly sensitive at an air number of a given magnitude, and the combustion process operating with an air ratio having an air number of a different magnitude out of the sensitivity range of the sensor which includes extracting a hot exhaust gas stream from a combustion process having an air ratio with an air number out of the given sensitivity range of a sensor changing the amount of air in the exhaust gas stream to provide an auxiliary gas stream having an air number in the sensitivity range of the sensor, measuring the air number of the auxiliary gas stream to detect the difference from the air number of the given magnitude, and controlling the air ratio of the combustion process to maintain the air number of the auxiliary gas stream at the given magnitude, and apparatus for carrying out

Abstract: The arrangement includes a source of finely divided solid combustible material fluidized in an inert gas, and also a source of combustion-supporting gas, such as oxygen, air, or oxygen-enriched air. A gasifier is provided for gasifying finely divided solid combustible material by reacting the same with combustion-supporting gas, and the gasifier has one or more inlets. A first conduit connects the source of combustible material to an inlet of the gasifier. A second conduit connects the source of combustion-supporting gas to an inlet of the gasifier.

Abstract: A method of operating a burner in which fuel and airborne combustible debris to be incinerated are received in a burner while fuel delivered to the burner is decreased in quantity in the absence of debris to be incinerated so that delivery of excess fuel in the absence of debris is avoided.

Abstract: In an exhaust gas purifying apparatus which includes a reactor in the exhaust line of an internal combustion engine there is provided a heater burner to which there is delivered an air-fuel mixture and which heats the reactor for rapidly bringing it to operating temperatures when the engine is started. In the air conduit through which combustion air for the air-fuel mixture is delivered to the burner there is provided a valve controlled in such a manner that the flow rate of combustion air remains constant and is thus independent of the said counterpressure at the heating burner and the output delivery of the air pump driving the combustion air.

Abstract: A burner for Rankine cycle engines which includes a combustor of the rotating atomizer type and a control system therefor which keeps the ratio of fuel and air supplied to the combustor at an optimum over a wide range of operation to maximize efficiency and minimize the emission of pollutants from the combustor.

Abstract: A feedback air-fuel ratio regulator comprises an air-fuel ratio sensor which determines air-fuel ratio of the combustible gas from the composition of its exhaust gas and produces a sudden change in its output at a preset theoretical air-fuel ratio and an electronic air-fuel ratio controlling circuit. The latter includes voltage detectors for detecting the output voltage of the air-fuel ratio sensor at two or more points corresponding to certain richer and leaner air-fuel ratios than the theoretical one. Switching means are actuated by the output combined by the voltage detectors. An integrating circuits has a time constant which is determined by a condenser and resistance selected by the switching means, whereby the amount of fuel to be injected is regulated by the time constant which is determined by the output of integrating circuit according to said output voltage.

Abstract: The invention is concerned with a burner monitor comprising a variator which is arranged to cause a predetermined fluctuation of the flow of a reactant to a burner to cause flickering of the burner flame. A detector for radiation from the flame from the burner emits a signal corresponding to the radiation. A comparator assesses the polarity of any correlation between the applied fluctuations and the signal from the detector and an indicator indicates the assessed polarity. The output from the indicator may be integrated to produce a quantitative assessment of the fuel rich or fuel lean flame condition.

Abstract: A circuit for protecting a gas burner is described to shut the flow of gas off, if the air blower fails.

Abstract: In an exhaust gas purifying apparatus which includes first and second reactors in the exhaust line of an internal combustion engine there is provided a heater burner to which there is delivered an air-fuel mixture and which heats the first reactor for rapidly bringing it to operating temperatures when the engine is started. In the air conduit through which combustion air for the air-fuel mixture is delivered to the burner there is provided a valve controlled in such a manner that the flow rate of combustion air remains constant and is thus independent of the counterpressure at the heating burner and the output delivery of the air pump driving the combustion air. Upon reaching operating temperatures the burner is extinquished and the combustion air is rerouted past the first reactor to the second reactor.

Abstract: Burner apparatus in which fuel and airborne combustible debris to be incinerated are received in a burner while fuel delivered to the burner is decreased in quantity in the absence of debris to be incinerated so that delivery of excess fuel in the absence of debris is avoided.