26928-1

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26928-1 Application Field and Working Principle

The 26928-1 standard sets the requirements for a fuel system monitor intended for use on automotive 12 Volt DC systems. It is also applicable to 24 Volt DC systems. The purpose of the standard is to provide a system performance monitor that will check a specified set of parameters and inform the user or technician of any anomalies that may be present. This standard defines the signal thresholds at which an alert or notification must be issued; the types and rates of signal quality measurements; the error codes associated with signal quality anomalies; and the safety features for personnel working on the fuel system.

The 26928-1 standard specifies the types of sensors that must be present in order to detect the various parameters and alert the user or technician of anomalies. This includes temperature, pressure, and flow sensors. The sensors must be able to detect changes in pressure, temperature, and flow in order to accurately diagnose any anomalies that may exist. Additionally, the standard specifies the minimum level of accuracy that must be maintained in order for any measurements to be reliable.

Structural Diagram

The 26928-1 standard requires the system to be composed of three main components: a monitor, a fuel system control unit, and a sensor system. The monitor is used to display information from the sensors and alert the user or technician to any anomalies that may exist. The fuel system control unit takes care of the fuel delivery and monitors any changes that may occur to the fuel system. Finally, the sensor system is responsible for gathering information from the fuel system and providing it to the monitor.

Working Principle

The 26928-1 standard sets the requirements for the monitor and associated sensor system to accurately detect and report changes in the fuel system. The monitor receives input from the sensor system and processes the information to determine if any changes have occurred. If a change is detected, the monitor will alert the user or technician of the anomaly. The alert will provide information about the change, such as the type of anomaly detected, in order to allow the user or technician to analyze and diagnose the issue.

Once the system detects an anomaly, it will alert the user or technician and provide them with a diagnostic code that can be used to troubleshoot the issue. The code will provide information about the cause of the anomaly and allow the user to take the appropriate steps to correct it. Additionally, the monitor will provide other information, such as a log of the anomalies, in order to help the user or technician accurately diagnose and fix the issue.

Conclusion

The 26928-1 standard is an important tool for both automotive and commercial vehicles to ensure the safe and reliable operation of fuel systems. The standard sets the requirements for the components, signals, and alerts that must be present in order to accurately detect and report anomalies. This information can then be used to troubleshoot and diagnose the issue in order to keep the vehicle operating as safely and efficiently as possible.

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