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2. Nitrogen oxide sensor - Wikipedia

   en.wikipedia.org/wiki/Nitrogen_oxide_sensor

   Therefore, in many applications with exhaust-gas treatment systems, one NOx sensor is used upstream of the exhaust-gas treatment system (upstream) and a second sensor is used downstream of the exhaust-gas treatment system. The upstream sensor is used for the aforementioned feedback loop. Meanwhile, the downstream sensor is used mainly to ...

3. Oxygen sensor - Wikipedia

   en.wikipedia.org/wiki/Oxygen_sensor

   An oxygen sensor (or lambda sensor, where lambda refers to air–fuel equivalence ratio, usually denoted by λ) or probe or sond, is an electronic device that measures the proportion of oxygen (O 2) in the gas or liquid being analyzed. [1] It was developed by Robert Bosch GmbH during the late 1960s under the supervision of Günter Bauman. [1]

4. Exhaust gas temperature gauge - Wikipedia

   en.wikipedia.org/wiki/Exhaust_gas_temperature_gauge

   An exhaust gas temperature gauge (EGT gauge or EGT sensor) is a meter used to monitor the exhaust gas temperature of an internal combustion engine in conjunction with a thermocouple-type pyrometer. EGT gauges are found in certain cars and aeroplanes. By monitoring EGT, the driver or pilot can get an idea of the vehicle's air-fuel ratio (AFR).

5. List of sensors - Wikipedia

   en.wikipedia.org/wiki/List_of_sensors

   Hall effect sensor; Wheel speed sensor; Airbag sensors; Automatic transmission speed sensor; Brake fluid pressure sensor; Camshaft position sensor (CMP) Cylinder Head Temperature gauge; Engine crankcase pressure sensor; Exhaust gas temperature sensor; Fuel level sensor; Fuel pressure sensor; Knock sensor; Light sensor; MAP sensor; Mass airflow ...

6. Mass flow sensor - Wikipedia

   en.wikipedia.org/wiki/Mass_flow_sensor

   MAF sensor in a 2006-2015 automotive diesel engine. A mass (air) flow sensor (MAF) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its ...

7. Category:Gas sensors - Wikipedia

   en.wikipedia.org/wiki/Category:Gas_sensors

   Pages in category "Gas sensors" The following 23 pages are in this category, out of 23 total. This list may not reflect recent changes. C. Calibration gas;

8. MAP sensor - Wikipedia

   en.wikipedia.org/wiki/MAP_sensor

   With OBD II standards, vehicle manufacturers were required to test the exhaust gas recirculation (EGR) valve for functionality during driving. Some manufacturers use the MAP sensor to accomplish this. In these vehicles, they have a MAF sensor for their primary load sensor. The MAP sensor is then used for rationality checks and to test the EGR ...

9. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/OBD-II_PIDs

   Exhaust Gas Temperature Sensor 99: 153: 9 Exhaust Gas Temperature Sensor 9A: 154: 6 Hybrid/EV Vehicle System Data, Battery, Voltage 9B: 155: 4 Diesel Exhaust Fluid Sensor Data % 9C: 156: 17 O2 Sensor Data 9D: 157: 4 Engine Fuel Rate g/s 9E: 158: 2 Engine Exhaust Flow Rate kg/h 9F: 159: 9 Fuel System Percentage Use A0: 160: 4