Pengembangan Prototipe Pengukuran Emisi Gas Buang Kendaraan Bermotor Menggunakan Kombinasi Flow Sensor

Abstract

Motor vehicle exhaust emissions are one of the main factors of air pollution in urban environments. To monitor pollutant levels more accurately, a measurement system is needed that can detect harmful gas compounds such as CO, NO₂, and NH₃. This research uses a MICS6814 gas sensor combined with a flow sensor and controlled by an Arduino UNO R4-WIFI microcontroller. The system is designed to read the gas concentration while calculating the exhaust gas flow rate in real-time. Data was obtained from testing two-wheeled and four-wheeled vehicles for 10 minutes, then compared between readings with and without flow sensors. The test results show that the use of flow sensors provides more dynamic and accurate emission values because it considers the volume of gas flow. In addition, actual exhaust gas flow rates in Indonesia exceed Euro 4 standards, with an average of 25.27 L/min for motorcycles and 34.54 L/min for cars. These findings suggest that local standards need to be adjusted to make emission measurements more representative of vehicle operating conditions in Indonesia.