Delphi Mini-Switching Oxygen Sensors Delphi Mini-Switching Oxygen Sensors provide stoichiometric measurement of exhaust gases in gasoline and alternative fuel engine applications to help manufacturers meet current and future exhaust emissions standards by providing more accurate engine control and better exhaust system diagnostics. The Mini-Switching Sensors are based on Delphi's proven Switching Oxygen Sensor technology, but feature a dramatic reduction in size and weight — up to 50 percent smaller size and only about a third of the weight. Their smaller size enables significantly reduced light-off — up to 50 percent faster — for improved emissions benefits. Delphi Mini-Switching Oxygen Sensors, like Delphi's conventional Switching Oxygen Sensors, feature planar element technology for fast light-off and low cost, and they have a pumped air reference feature to prevent air reference contamination. They also include a zirconia-based element with planar geometry. Delphi MiniSwitching Oxygen Sensors can be used in an exhaust system in either an engine-out or in a post-converter location. Delphi's Mini-Switching Oxygen Sensors for small engine applications are dramatically smaller in size than our proven conventional Switching Oxygen Sensors while offering similar features and benefits. Significantly reduced size enables applications for small gasoline engines that require closed-loop control (e.g. motorcycles). Compatible with applications that can use gasoline-ethanol blended fuels (e.g. zero-turn commercial lawn mowers). 12 mm sensor thread enables easier installation on small exhaust pipes. A lower shield has a shorter insertion depth into the exhaust pipe and a smaller diameter, which reduces exhaust restriction especially in small diameter exhaust pipes. Fast light-off time with a low-wattage heater can help reduce system costs and help reduce cold-start emissions. Pumped air reference prevents air reference contamination from various sources, including: grommet, exhaust and external sources. Delphi's industry-leading, poison-resistant coating helps optimize sensor durability. While shorter than our conventional Switching Oxygen Sensors, Delphi Mini-Switching Oxygen Sensors maintain a high-temperature capability enabling flexibility for location of the sensor and consistent operation across a wide range of temperatures. Their mounting location flexibility and high temperature tolerance contribute to improved sensor performance, reliability and durability. o An integrated heater allows the sensor to be mounted further downstream preventing sensor biasing due to close proximity to the exhaust ports. o With an integrated heater, the sensor remains active under all conditions, including extended idles. Low power consumption helps minimize the vehicle's electrical energy requirements. Robust construction resists thermal shock without cracking. Typical Applications Delphi offers Mini-Switching Oxygen Sensors for gasoline engine programs, such as motorcycles which will require closed-loop sensors to help meet anticipated new exhaust emissions regulations. The sensors can also be used in engine programs for commercial products such as lawn mowers and power generators, and for "power sports" products such as personal ATVs, to enable the use of gasoline-ethanol blended fuels. www.delphi.com | © Delphi. All rights reserved. |

Delphi Mini-Switching Oxygen Sensors Specifications Performance Parameters Rich voltage Lean voltage Rich to lean response time Lean to rich response time Static lambda Sensor light-off or time to activity Heater power at 13.5 V, 450°C exhaust Heater in-rush current at 21°C, 13.5 V 13.5 V Applied Heater >720 mV <120 mV <100 ms <80 ms 1.004 <8 seconds 4 watts <1 amp maximum (Target performance at 450°C exhaust. For reference only.) Availability In serial production. Engineering samples are available to manufacturers as part of the Delphi Multec® Electronic Fuel Injection engine management system...