The O2 sensor measures exhaust fumes.
The valuable career of the O2 sensor is To gauge the exhaust fumes once they extent the exhaust manifold. The sensor is detecting the fuel/air brew and relaying the clue back to the automobile pc. The vehivle personal computer Testament then transform the brew To admit the Engine to canter also efficiently. The heated planar is the most used O2 sensor, as of Jan 2010. The sample was establish by the heated thimble and then improved upon with the heated planar.
Unheated Thimble
The leading speck is feedback for fuel controls. This sensor was introduced by Bosch in 1976. The zirconia ceramic thimble is encased in a protective tube that extends into the exhaust manifold. There are slots in the ceramic tube that let on the heat to penetrate the ceramic thimble. This sensor references outside temperatures from a hole in the sensor shell. The ceramic thimble is grounded and conducts electricity to send the information through to the wiring harness and ultimately to the car computer. This sensor reads the exhaust gases to determine if the fuel/air mixture is correct. This will tell the computer to change the fuel/air mixture for fuel economy and better fuel consumption. The unheated thimble has only one wire running to it for grounding. In some cases, the sensor will have two wires for grounding. The drawback of this sensor is that it can cool down when the motor is idling and the manifold is not producing the required heat to allow the sensor to function correctly.
Heated Thimble
The heated thimble was developed by Bosch in 1982. This sensor has a heater element attached to it. The heating element made it possible to conduct its own heat instead of waiting the additional 30 to 60 seconds for the exhaust gases to heat the thimble. This sensor starts working automatically on the start of the vehicle and does not have to wait for the manifold to get warm to start working. The element also prevents the sensor from cooling off when the motor is idling and transmits information to the car computer constantly. This sensor is recognized by four wires running to it as opposed to just one or two. The heated thimble ensures the vehicle runs smoothly within a minute of start-up, which is the most crucial time for any motor.
Heated Titania
The other sensors use a back-and-forth method for relaying voltage or changing resistance. This sensor directly relays the car computer to change the fuel/air mixture, which is more beneficial to the emission standard as the engine runs smoother at all times. This sensor was produced in 1994 but used in very few vehicles, as of January 2010. This sensor also has a four-wire harness running to it. Bosch developed this sensor in 1982. It is used in as few as 1 percent of vehicles on the road, as of January 2010.
Heated Planar
This sensor is crafted from various materials such as electrodes, heater insulation and a laminated flat strip of conductive ceramic that enables the sensor to work efficiently and not corrode. The sensor is more compact and delicate. It takes only 10 seconds to start working, thus keeping the fuel/air mixture balanced almost at start-up. This sensor was developed by Bosch in 1997 and is used in 50 percent of vehicles on the road, as of January 2010. This sensor also has four wires running into it.
Heated Wide Band
This sensor is similar to the planar sensor. The unique feature is its ability to gauge fuel/air mixture and notify the computer as to what level of mixture the car is using.The heated titania sensor is crafted from a different type of ceramic material and relays the information to the car computer differently. The other sensors generate a voltage signal sent to the computer that indicates to the computer to change the fuel/air mixture. The titania sensor's electrical resistance changes and the car computer is notified of the change and updates the fuel/air mixure. This sensor is similar to the heated thimble as it has four wires running to it from the wiring harness.
