Technical Information
Engine Air Fuel Ratios
Distributed By: Syntek Global Inc. 12382 South Gateway Park Place Suite B800 Draper, UT 84020 801-386-5007
The Affects of Xtreme Fuel Treatment on Engine Air Fuel Ratios Modern computerized engine control systems rely on inputs from a variety of sensors to help regulate engine performance, emissions and other important engine functions. These sensors supply accurate information to the engine computer otherwise drivability problems, increased fuel consumption and emission failures can result. One of the essential elements of the onboard data management system is the oxygen (O2) sensor. Federal emission laws have made O2 sensors virtually mandatory on all cars and light trucks built since 1981. And now, with OBD-II regulations here (1996 and newer vehicles), many vehicles are equipped with multiple O2 sensors. The O2 sensor is mounted in the exhaust manifold (OBD I system) to monitor how much unburned oxygen is in the exhaust as the exhaust exits the engine. Monitoring oxygen levels in the exhaust provides a method to monitor the engine fuel mixture. The 02 sensor communicates with the engine computer advising of a rich (less oxygen) or lean (more oxygen) combustion condition. Many factors can affect the relative richness or leanness of the fuel mixture, including; air temperature, fuel type, engine coolant temperature, barometric pressure, throttle position, air flow and engine load. As a result, any problems with the O2 sensor can throw the whole system into chaos. It should be noted that the 02 sensor is only affective when up to temperature and during “closed loop” operations. “Open loop” operations exist during the initial engine startup. At engine startup, the engine warms up utilizing computer pre-sets (normally rich) until the necessary operating paradigm is achieved. The OBD II (1996 or newer) system is better designed to monitor the emissions performance of the engine. This includes monitoring situations that may have a negative impact on system designed emissions levels. The OBD II system evaluates the data provided from multiple oxygen sensor readings (before and after the catalytic converter) to insure that the catalytic converter is in fact operational and reducing exhaust pollutants. If the engine computer sees little or no change in oxygen level readings, between the redundant 02 sensors, then the catalytic converter is malfunctioning. A burn rate modifier, such as Xtreme Fuel Treatment, will not adversely affect any modern day onboard fuel management system. To better understand the purpose of a burn rate modifier, one must understand the chemistry associated with such a constituent. A burn rate modifier helps to utilize more of the available energy (BTU) contained in a gallon of fuel. By doing so, it must follow the same theories of combustion in that some level of balance in stoichiometry must be maintained or the fuel burn rate would not improve. In fact, during the combustion process, a reduction in oxygen without a similar reduction in carbon would be considered improbable. A mechanical issue would be much more likely to create this phenomenon than a combustion related issue; i.e., air restriction, tune up, failed 02 sensor, etc. Xtreme Fuel Treatment helps to improve fuel combustibility without altering engine Lambda conditions. Simply stated, Xtreme Fuel Treatment helps to maintain the same AFR (air fuel ratio) of approximately 14.5:1, while reducing excess combustion air and fuel. As important, Xtreme Fuel Treatment will help reduce carbon contamination on the oxygen sensor, which will improve oxygen sensor performance and longevity.
Engine Air Fuel Ratios
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