Abstract: A fuel quality monitoring system includes a fuel composition sensor configured to provide an indication of a composition of a liquid fuel within a fuel tank, and a controller. The controller is configured to receive the indication of the monitored fuel composition from the fuel composition sensor; detect an amount of an impurity from the received indication; and compare the amount of the impurity to a threshold. If the amount of the impurity exceeds the threshold, the controller is configured to adjust an operating parameter of an engine to account for the detected impurity. When the amount of the impurity exceeds a threshold which makes engine combustion unmanageable, the fuel is restricted from entering the engine or fuel tank.

Abstract: An oil-life monitoring system includes an engine revolution counter configured to provide an output corresponding to the rotation of a component of an engine, and a controller in communication with the engine revolution counter. The controller is configured to determine the composition/properties of a fuel being combusted by the engine, and select a fuel quality penalty factor from a table, with the fuel quality penalty factor corresponding to the determined composition/properties of the fuel. Additionally, the controller is configured to compute an adjusted revolution count by multiplying the rotations of the component of the engine by the fuel quality penalty factor, and aggregate the adjusted revolution count.

Abstract: A fuel quality monitoring system includes a fuel composition sensor configured to provide an indication of a composition of a liquid fuel within a fuel tank, and a controller. The controller is configured to receive the indication of the monitored fuel composition from the fuel composition sensor; detect an amount of an impurity from the received indication; and compare the amount of the impurity to a threshold. If the amount of the impurity exceeds the threshold, the controller is configured to adjust an operating parameter of an engine to account for the detected impurity. When the amount of the impurity exceeds a threshold which makes engine combustion unmanageable, the fuel is restricted from entering the engine or fuel tank.

Abstract: An oil-life monitoring system includes an engine revolution counter configured to provide an output corresponding to the rotation of a component of an engine, and a controller in communication with the engine revolution counter. The controller is configured to determine the composition/properties of a fuel being combusted by the engine, and select a fuel quality penalty factor from a table, with the fuel quality penalty factor corresponding to the determined composition/properties of the fuel. Additionally, the controller is configured to compute an adjusted revolution count by multiplying the rotations of the component of the engine by the fuel quality penalty factor, and aggregate the adjusted revolution count.