How NBo2 Sensor Input Controls Fuel Delivery
02-11-2017, 09:06 PM
#1
Senior Member
Thread Starter
How NBo2 Sensor Input Controls Fuel Delivery
This document describes how Injector Base Pulse Width (BPW) is calculated, and then how it is corrected in Closed Loop (CL) with NBo2 sensor input. Also addressed is the effect on BPW if o2-related Calibration values are changed. BPW determination in Open Loop (OL) is also addressed.
The goal was to produce a single point of reference for: (1) Narrow Band Oxygen Sensor (NBo2)-related engine management information, and (2) details on the use and effect of o2 related Calibration items. It includes independent research and content from various articles and on-line forum posts. There is a Summary but also much detail.
Have been working on this for some time for personal reference, but thought it might be useful to others.
Document Revisions:
The goal was to produce a single point of reference for: (1) Narrow Band Oxygen Sensor (NBo2)-related engine management information, and (2) details on the use and effect of o2 related Calibration items. It includes independent research and content from various articles and on-line forum posts. There is a Summary but also much detail.
Have been working on this for some time for personal reference, but thought it might be useful to others.
Document Revisions:
04/02/2017 Revision 1
The titles of the Tables below were changed to better describe their usage:
Table at 0x4BD
Prev: SLOW o2 Filter Coefficient .vs. Air Flow
New: SLOW o2 INT Delay Time .vs. Air Flow
Table at 0x4C6
Prev: SLOW o2 Filter Coefficient Multiplier .vs. Air Flow
New: SLOW o2 Lag Filtering Coefficient .vs. Air Flow
02/09/2017 Initial release
The titles of the Tables below were changed to better describe their usage:
Table at 0x4BD
Prev: SLOW o2 Filter Coefficient .vs. Air Flow
New: SLOW o2 INT Delay Time .vs. Air Flow
Table at 0x4C6
Prev: SLOW o2 Filter Coefficient Multiplier .vs. Air Flow
New: SLOW o2 Lag Filtering Coefficient .vs. Air Flow
02/09/2017 Initial release
Last edited by 84Elky; 04-02-2017 at 04:16 PM. Reason: Document Update
03-31-2017, 04:23 PM
#2
Member
Join Date: Jul 2006
Location: Cary, NC
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 IROC
Engine: 420 EFI
Transmission: TKO500
Axle/Gears: Moser 9" 3:50
Re: How NBo2 Sensor Input Controls Fuel Delivery
Thanks Tom,
Hard work went into the document.
Best Regards,
Bruce
Hard work went into the document.
Best Regards,
Bruce
