Drivstoffmengdemålere

Drivstoffmengdemålere, often referred to as fuel flow meters or fuel sensors, are devices used to measure the amount of fuel consumed by an engine. In automotive applications, they are integral to the engine control unit (ECU) for managing fuel injection and optimizing fuel efficiency. These meters typically work by detecting the volume or mass of fuel passing through them.

There are several types of fuel flow meters. One common type is the turbine flow meter, which uses a small turbine wheel that rotates as fuel passes through. The speed of rotation is proportional to the fuel flow rate. Another type is the ultrasonic flow meter, which uses sound waves to measure the flow. By measuring the time it takes for sound waves to travel through the fuel, the flow rate can be determined. Thermal mass flow meters are also used, measuring the amount of heat carried away by the fuel, which is directly related to its mass flow rate.

The data from a drivstoffmengdemåler is crucial for the ECU to calculate how much fuel to inject into the engine cylinders at any given moment. This information helps in maintaining the correct air-fuel ratio for optimal combustion, thereby improving performance and reducing emissions. In modern vehicles, these measurements are also used for the on-board trip computer, providing drivers with information about average fuel consumption and range. Calibration and accuracy of the drivstoffmengdemåler are important for the correct functioning of the engine management system.