AFR/O2 sensor

[chadjmccolm]

Context

An AFR/O2 sensor needs to be added to the engine’s exhaust before tuning starts to help prevent against damage to the engine which has occurred in the past. Whether Hybrid owns an O2 sensor is unknown but if we don’t then one will need to be purchased, wired into the Microsquirt, and attached to the exhaust. A heated wideband is preferred but it is at the discretion of the designer or project manager.

Additional info can be found in the engine review doc here.

Outcomes

The outcomes for the project are the following:

• [x] have a precise measurement of the Air Fuel Ratio

Constraints

AFR sensor cannot be anything but a wideband for safety reasons (and to protect the investment)

Related Issues

Related issues include:

• 17 Wiring Schematic Cleanup

• 16 Bench Wiring Harness Cleanup

[chadjmccolm]

The powertrain team has looked all though the shop and although we can find an AFR gauge we cannot find a sensor for it. We have to assume that we no longer possess the sensor because we effectively don't. Kurt Elliott is going to determine what we need and present the cost to the team.

[chadjmccolm]

The sensor has been found and the gauge and sensor are now fully integrated into the EFI. It should be noted that the Microsquirt isn't configured to get a perfect reading from the sensor so the gauge should be used instead.

[chadjmccolm]

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