Cranking taper curve question

General support questions and announcements for MS3. See also MS3 manuals.

Moderators: jsmcortina, muythaibxr

Post Reply
sd1nl
Master MS/Extra'er
Posts: 470
Joined: Wed Apr 11, 2012 3:21 am
Location: Netherlands

Cranking taper curve question

Post by sd1nl »

Hi,

Was playing around with the cranking taper curve today.

I was wondering what is meant with "events" in the curve. Is this engine cycles, or ignition pulses? Tooltips are not exactly clear on this.

Rene
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
billr
Super MS/Extra'er
Posts: 6828
Joined: Sun May 15, 2011 11:41 am
Location: Walnut Creek, Calif. USA

Re: Cranking taper curve question

Post by billr »

I'm pretty sure it is ignition pulses, all of them, every cylinder adds to the count.
sd1nl
Master MS/Extra'er
Posts: 470
Joined: Wed Apr 11, 2012 3:21 am
Location: Netherlands

Re: Cranking taper curve question

Post by sd1nl »

I would say so, but it is very unclear. The manual is also not clear on this.
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: Cranking taper curve question

Post by Matt Cramer »

"Events" always refers to ignition events.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
sd1nl
Master MS/Extra'er
Posts: 470
Joined: Wed Apr 11, 2012 3:21 am
Location: Netherlands

Re: Cranking taper curve question

Post by sd1nl »

And the term "ignition event" means one ignition spark, or an ignition cycle (=8 pulses for a v8 for instance)?
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
racingmini_mtl
Super MS/Extra'er
Posts: 9130
Joined: Sun May 02, 2004 6:51 am
Location: Quebec, Canada
Contact:

Re: Cranking taper curve question

Post by racingmini_mtl »

sd1nl wrote:And the term "ignition event" means one ignition spark, or an ignition cycle (=8 pulses for a v8 for instance)?
One spark.
jbperf.com Main site . . . . . . . . . . . . . . . . . . . . . . jbperf.com Forum
Image
sd1nl
Master MS/Extra'er
Posts: 470
Joined: Wed Apr 11, 2012 3:21 am
Location: Netherlands

Re: Cranking taper curve question

Post by sd1nl »

Ok, thanks
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
sd1nl
Master MS/Extra'er
Posts: 470
Joined: Wed Apr 11, 2012 3:21 am
Location: Netherlands

Re: Cranking taper curve question

Post by sd1nl »

Strange thing is though that when I set the "ASE count units" to "cycles", in reality this is "ignition events"

And when I set the "cranking fuel rate" to "every event" , the tooltip says this means every "tach event"

It is kind of confusing.
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
jsmcortina
Site Admin
Posts: 39617
Joined: Mon May 03, 2004 1:34 am
Location: Birmingham, UK
Contact:

Re: Cranking taper curve question

Post by jsmcortina »

Same thing.

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
Post Reply