A system, method and device for mass airflow sensor signal processing includes a microcontroller, a mass airflow sensor and an engine PCM. An analog-to-digital converter (ADC) converts a first output signal from the mass airflow sensor to a first V.sub.DC value. A digital-to-analog converter (DAC) converts a second V.sub.DC value to a second output signal associated with the mass airflow sensor. Transfer functions are obtained from a flow bench using the mass airflow sensor, performance air intake components, and stock air intake components. The microcontroller determines, from the first V.sub.DC value, a corresponding actual flow rate. From the actual flow rate, a corresponding stock V.sub.DC value is determined. The stock V.sub.DC value is then output to the DAC for conversion to the output second signal associated with the mass airflow sensor for communication to the engine PCM.

A system, method and device for mass airflow sensor signal processing includes a microcontroller, a mass airflow sensor and an engine PCM. An analog-to-digital converter (ADC) converts a first output signal from the mass airflow sensor to a first V.sub.DC value. A digital-to-analog converter (DAC) converts a second V.sub.DC value to a second output signal associated with the mass airflow sensor. Transfer functions are obtained from a flow bench using the mass airflow sensor, performance air intake components, and stock air intake components. The microcontroller determines, from the first V.sub.DC value, a corresponding actual flow rate. From the actual flow rate, a corresponding stock V.sub.DC value is determined. The stock V.sub.DC value is then output to the DAC for conversion to the output second signal associated with the mass airflow sensor for communication to the engine PCM.

Calibration of a valve in a vacuum system and providing a diagnostic indication in the vacuum system using the calibration includes measuring conductance of the valve as a function of angular valve position and generating a conductance calibration map or function for use during operation of the valve. An actual angular valve position is set based on the received set point angular valve position and a difference between the measured valve conductance and a predefined metric of conductance versus angular valve position. An actual system conductance and a difference between the actual system conductance and a reference system conductance for the system are determined. The diagnostic indication of a fault in the system is generated based on the actual angular valve position of the valve and the difference between the actual system conductance and the reference system conductance for the system.

Systems and methods for sensing an amount of a liquid in a container are provided. A conduit is provided that has a length positioned relative to a portion of the container where a level of the liquid in the container changes when liquid is added to the container or liquid is removed from the container. The conduit is in fluid communication with the container to therefore allow an amount of the liquid to enter the conduit that is proportional to the amount of the liquid in the container. An outlet is provided along with a valve. The valve is in fluid communication with the conduit and the outlet, where the valve is selectable to allow the amount of liquid in the conduit to pass to the outlet, the amount of liquid passing to the outlet proportional to the amount of liquid in the container.

A fuel consumption measurement system of a work vehicle includes a first fuel data calculation unit configured to calculate first fuel data related to fuel consumption, based on a fuel injection amount injected to an engine, a second fuel data calculation unit configured to calculate second fuel data related to fuel consumption, based on a change amount of a fuel amount in a fuel tank, a correction coefficient calculation unit configured to calculate a correction coefficient based on the first fuel data and the second fuel data, a correction coefficient determination unit configured to determine whether the correction coefficient falls within a prescribed range, a fuel consumption data calculation unit configured to calculate fuel consumption data indicating a fuel consumption rate, based on the correction coefficient determined to fall within the prescribed range, and the first fuel data, and an output unit configured to output the fuel consumption data.

A power generator system, including a remaining fuel detector detecting a remaining fuel amount of each of the first generator and the second generator, an operable time calculator calculating a remaining operable time of the each of the first generator and the second generator based on the remaining fuel amount detected by the remaining fuel detector, and a signal output unit outputting a control signal for adjusting outputs of the first generator and second generator to an actuator so that the remaining operable time of the first generator and the remaining operable time of the second generator calculated by the operable time calculator is equalized while keeping a total power of the first generator and the second generator constant.

A system can include a flow measurement device positionable in a flow path for measuring a property of the fuel flowing through the flow path and a shutdown device positionable in the flow path for controlling the fuel flow through the flow path. The system can also include a computing device that is communicatively coupled to the flow measurement device for receiving the fuel flow property and from which the presence of two-phase flow or multiphase flow can be detected. The computing device is also communicatively coupled to the shutdown device for controlling fuel flow through the flow path in response to the detection of two-phase flow or multiphase flow.

A method of reporting fuel consumption, the method comprising: providing a vehicle having a fuel level monitor; repeatedly measuring fuel consumption by the vehicle with the monitor; providing a server operable to generate fuel consumption reports, and transmitting the fuel consumption measurements via a communication channel between the fuel level monitor and the server.

A method of reporting fuel consumption, the method comprising: providing a vehicle having a fuel level monitor; repeatedly measuring fuel consumption by the vehicle with the monitor; providing a server operable to generate fuel consumption reports, and transmitting the fuel consumption measurements via a communication channel between the fuel level monitor and the server.

A fuel consumption measurement system of a work vehicle includes a first fuel data calculation unit configured to calculate first fuel data related to fuel consumption, based on a fuel injection amount injected to an engine, a second fuel data calculation unit configured to calculate second fuel data related to fuel consumption, based on a change amount of a fuel amount in a fuel tank, a correction coefficient calculation unit configured to calculate a correction coefficient based on the first fuel data and the second fuel data, a correction coefficient determination unit configured to determine whether the correction coefficient falls within a prescribed range, a fuel consumption data calculation unit configured to calculate fuel consumption data indicating a fuel consumption rate, based on the correction coefficient determined to fall within the prescribed range, and the first fuel data, and an output unit configured to output the fuel consumption data.