AIR FLOW RATE MEASURING DEVICE

摘要

The present disclosure provides an air flow rate measuring device disposed in an intake air passage. The air flow rate measuring device measures a flow rate of the intake air flowing through the intake air passage. The air flow rate measuring device includes a casing, a flow rate sensor, and a sensor module. The casing defines a bypass passage to take in a portion of the intake air. The flow rate sensor is disposed in the bypass passage. The flow rate sensor generates an output signal according to a flow rate of the intake air. The sensor module protrudes from an outer wall of the casing. The sensor module includes a multi-sensor unit that has a relative humidity sensor and a temperature sensor. The relative humidity sensor is exposed to an inside of the intake air passage to detect a relative humidity of the intake air flowing through the intake air passage. The temperature sensor detects a temperature of the intake air flowing through the intake air passage.

主权项

1. An air flow rate measuring device disposed in an intake air passage for intake air to be taken in an engine system, the air flow rate measuring device measuring a flow rate of the intake air flowing through the intake air passage, the air flow rate measuring device comprising:
a casing that defines a bypass passage to take in a portion of the intake air flowing through the bypass passage; a flow rate sensor that is disposed in the bypass passage, the flow rate sensor generating an output signal according to a flow rate of the intake air taken in the bypass passage; and a sensor module that protrudes from an outer wall of the casing, wherein the sensor module includes a multi-sensor unit that has a relative humidity sensor and a temperature sensor, the relative humidity sensor is exposed to an inside of the intake air passage to detect a relative humidity of the intake air flowing through the intake air passage, and the temperature sensor detects a temperature of the intake air flowing through the intake air passage.