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Title: Help Identifying Unknown Map - KFSW Post by: tightmopedman9 on February 13, 2014, 12:22:01 AM KFSW - Schließwinkel Kennfeld - 16 x 16
This is from a Bosch M4.4 system. (https://dl.dropbox.com/s/gi2yukn1svrisyy/KFSW%20MAP.jpg) It is under the ignition category in the DAMOS. Y axis is battery voltage, X axis is RPM. I assumed it was a dwell map, but now I'm not too sure. Title: Re: Help Identifying Unknown Map - KFSW Post by: tightmopedman9 on February 13, 2014, 12:23:32 AM Forgot to add, cell values are degrees (rotational I believe)
Title: Re: Help Identifying Unknown Map - KFSW Post by: aef on February 13, 2014, 12:46:26 AM cam dwell characteristic map
this is a bad translation from a german text: On high revs you have a lower energy at the spark plug. to compensate this the cam dwell caracteristic map is used. this map provides the ideal dwell angle at a given voltage and rpm to achieve the ideal ignition/firing voltage. source: https://www.uni-muenster.de/imperia/md/content/fachbereich_physik/technik_didaktik/steuerung_ottomotor.doc Title: Re: Help Identifying Unknown Map - KFSW Post by: tightmopedman9 on February 13, 2014, 01:00:03 AM Awesome! Thanks, I guess I was looking for a simpler map, one that just had dwell time at a given RPM and load. However, the dwell by cam angle does make more sense.
Would I be right in thinking that increasing the cell value will increase the amount of dwell time? |