This invention materially enhances the quality of the environment and mankind by contributing to the restoration or maintenance of the basic life-sustaining natural elements, by reducing the amount of carbon monoxide introduced to the atmosphere from a combustion system, achieved by furnishing a system's approach to optimize the amount of oxygen to be chemically combined with fuel upon ignition of both allowing the correct amount of carbon to combine with the correct amount of oxygen thus fully release the thermal energy stored therein.

A fuel flow system comprising a fuel manifold and a fuel nozzle. A fluidic valve having an inlet, a first outlet and a control flow inlet. The inlet is coupled to the fuel manifold. The first outlet is coupled to the fuel nozzle. The control flow inlet is coupled to a source of control fuel. The fluidic valve is configured to selectively couple the inlet to the first outlet dependent on the control flow into the control flow inlet.

A gas turbine engine includes a multi-stage fuel injection system including at least a first fuel injection stage and a second fuel injection stage, a first fuel reservoir fluidly connected to the first fuel injection stage and fluidly connected to a selective valve, and a second fuel reservoir fluidly connected to the selective valve. The selective valve connects one of the first fuel reservoir and the second fuel reservoir to the second fuel injection stage.

A gas turbine engine includes a multi-stage fuel injection system including at least a first fuel injection stage and a second fuel injection stage, a first fuel reservoir fluidly connected to the first fuel injection stage and fluidly connected to a selective valve, and a second fuel reservoir fluidly connected to the selective valve. The selective valve connects one of the first fuel reservoir and the second fuel reservoir to the second fuel injection stage.

Disclosed are a device for supplying liquid at a constant amount and a method for controlling the same, and the device for supplying liquid at a constant amount comprises a constant amount chamber, an input pump, an output pump, a liquid level detection device, and a controller; the input pump is provided with an input pump liquid feeding pipe and an input pump liquid discharging pipe; the output pump is provided with an output pump liquid feeding pipe and an output pump liquid discharging pipe; the input pump, the output pump, and the liquid level detection device are each in matched connection with the controller. In the present invention, by cyclic operation, a liquid volume between a high liquid level and a low liquid level is delivered at a constant amount in each cycle, so that liquid fuel is supplied at a constant amount.

Disclosed are a device for supplying liquid at a constant amount and a method for controlling the same, and the device for supplying liquid at a constant amount comprises a constant amount chamber, an input pump, an output pump, a liquid level detection device, and a controller; the input pump is provided with an input pump liquid feeding pipe and an input pump liquid discharging pipe; the output pump is provided with an output pump liquid feeding pipe and an output pump liquid discharging pipe; the input pump, the output pump, and the liquid level detection device are each in matched connection with the controller. In the present invention, by cyclic operation, a liquid volume between a high liquid level and a low liquid level is delivered at a constant amount in each cycle, so that liquid fuel is supplied at a constant amount.

This invention materially enhances the quality of the environment and mankind by contributing to the restoration or maintenance of the basic life-sustaining natural elements, by reducing the amount of carbon monoxide introduced to the atmosphere from a combustion system, achieved by furnishing a system's approach to optimize the amount of oxygen to be chemically combined with fuel upon ignition of both allowing the correct amount of carbon to combine with the correct amount of oxygen thus fully release the thermal energy stored therein.

A fuel system includes: a constant-volume pump and a centrifugal pump increasing the pressure of fuel to be supplied to an engine for aviation and discharging the fuel; an operation controller configured to select in accordance with the operation state of the engine, one of a constant-volume pump-using mode of increasing the pressure of fuel using the constant-volume pump and a centrifugal pump-using mode of increasing it using the centrifugal pump; and a speed changer connecting the engine and the centrifugal pump, changing the rotational speed of rotational power output from the engine and transmitting the rotational power to the centrifugal pump, and being capable of adjusting the speed-changing ratio of the rotational speed.

A fuel system includes: a constant-volume pump and a centrifugal pump increasing the pressure of fuel to be supplied to an engine for aviation and discharging the fuel; an operation controller configured to select in accordance with the operation state of the engine, one of a constant-volume pump-using mode of increasing the pressure of fuel using the constant-volume pump and a centrifugal pump-using mode of increasing it using the centrifugal pump; and a speed changer connecting the engine and the centrifugal pump, changing the rotational speed of rotational power output from the engine and transmitting the rotational power to the centrifugal pump, and being capable of adjusting the speed-changing ratio of the rotational speed.

This invention reduces the amount of carbon monoxide introduced by a combustion system to the atmosphere, by furnishing a systems approach to optimize the amount of oxygen to be chemically combined with fuel upon ignition of both allowing the correct amount of carbon to combine with the correct amount of oxygen thus fully release the thermal energy stored therein. By so furnishing the level of oxygen with carbon of the fuel, more carbon dioxide is produced thus proportionally reduces the amount of carbon monoxide released to the atmosphere. The invention provides a heating system that surpasses the net and gross efficiency performance of a natural gas burner.