History of MembersPage/MarcellGal/PowerAndTraction/InputTrigger
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2011-06-18 13:02:15 . . . . 3e44be11.adsl.enternet.hu [analyzing a triggerlog]
2007-05-15 23:13:12 . . . . MembersPage/MarcellGal [note about config with this 360 crankdeg rotated HALL signal]
2007-05-14 00:25:33 . . . . MembersPage/MarcellGal [HALL works now]
2007-05-10 23:49:44 . . . . MembersPage/MarcellGal [maybe the connector receptacles tricked us]
2007-05-03 21:04:06 . . . . MembersPage/GintsK [HALL saga/ supply voltage]
2007-05-03 10:49:44 . . . . MembersPage/MarcellGal [HALL saga]
2007-05-02 11:00:37 . . . . GintsK [Hall supply?]
2007-05-01 21:07:36 . . . . MembersPage/MarcellGal [my HALL sensor is bad]
2007-04-30 08:51:07 . . . . MembersPage/MarcellGal [links about VR]
2007-04-27 22:00:37 . . . . MembersPage/MarcellGal [notes on my trigger install]


Changes by last author:

Changed:
The trigger is now setup well, including the HALL sensor. HALL sensor in the distributer works now, and position set, so startup is fine now, without kickback caused by bad initial phase (which happened with the bad HALL-sensor). Now no wheel errors during running (wheel error counter stays at W01 after startup). Because of how they mounted the distributer shaft, the HALL trigger became nonstandard, as it coincides with (masks out) the 134 BTDC cyl5 crankhome pulse, not the 62BTDC cyl1 (see InputTrigger/AudiTrigger for more explanation on the auditrigger). Since the distributer has "only" appr 190 camdeg window to set position, it seems impossible to rotate the distributor to standard position (without removing the shaft). It would make little sense to rotate anyway, since this setup allows firing 72crankdeg earlier during initial startup, and the 360 crankdeg off-phase was very easily accomodated in configutation:
The trigger is now setup well, including the HALL sensor. HALL sensor in the distributer works now, and position set, so startup is fine now, without kickback caused by bad initial phase (which happened with the bad HALL-sensor).

Analyzing a cranking triggerlog (captured with 1.1.92) shows:

* after more than 1 but less than 2 crankrot, the sectrig pulse finally arrives.

* 41.4 msec / 40 deg means ~161 RPM

* 16 * 8 degrees later the triggerlog shows a spark event

* measurement starting 40 degrees later, 36.2 msec /80 deg means 368 RPM (so the RPM more than doubled !)

* Actually, the most extreme change in only 40 deg seems to be: measuring 37.2msec/40 deg (before 20ATDC), and 20.4 msec/40deg (after 20ATDC) so time is 55% (not 182%) of the previous period - quite impressive (with factory flywheel)!

* in a few more events the engine is up at 8.46 msec /40 deg = 788 RPM: the engine is running.

* cannot start the engine much quicker than that with this trigger hardware setup.

** Could be possible to start up faster with a wasted spark trigger, especially with a smart MembersPage/YasecElise type trigger

** or with cam-HALL signal also connected to a 4th trigger input (the cam-HALL only used for masking away every 2nd crankhome pulse in this setup, but theoretically it could be connected directly into the exhaust-cam signal input but that would need firmware support for this marginal gain)

No wheel errors during running (wheel error counter stays at W01 after startup). Because of how they mounted the distributer shaft, the HALL trigger became nonstandard, as it coincides with (masks out) the 134 BTDC cyl5 crankhome pulse, not the 62BTDC cyl1 (see InputTrigger/AudiTrigger for more explanation on the auditrigger). Since the distributer has "only" appr 190 camdeg window to set position, it seems impossible to rotate the distributor to standard position (without removing the shaft). It would make little sense to rotate anyway, since this setup allows firing 72crankdeg earlier during initial startup, and the 360 crankdeg off-phase was very easily accomodated in configutation: