Speed Density - Revision history

PRJ: /* Load filter */

2018-02-22T14:05:03Z

Load filter

PRJ: /* VE Table */

2017-11-01T15:55:49Z

VE Table

PRJ: /* Load filter */

2017-11-01T15:53:00Z

Load filter

PRJ: /* Load filter */

2017-11-01T15:52:14Z

Load filter

PRJ: /* Algorithm */

2017-11-01T15:51:48Z

Algorithm

PRJ: Created page with "== Algorithm == The MAP sensor is sampled crank-synchronously. Five times per cycle.
**LOAD = FILTER((VE(MAP,RPM)VE_MULT+VE_ADDEND)MAP)**"

2017-11-01T15:18:15Z

Created page with "== Algorithm == The MAP sensor is sampled crank-synchronously. Five times per cycle. LOAD = FILTER((VE(MAP,RPM)*VE_MULT+VE_ADDEND)*MAP)"

New page

== Algorithm ==
The MAP sensor is sampled crank-synchronously. Five times per cycle. 
LOAD = FILTER((VE(MAP,RPM)*VE_MULT+VE_ADDEND)*MAP)

@@ Line 23: / Line 23: @@
 This filter corrects for jitter and limits LOAD rate of change. Axes are RPMxLOAD. 255 means straight-through, 0 means LOAD can not change. The filter limits LOAD delta to X/255*delta.<br/>
 There is also an exception - if the load jump is bigger than the constant for the maximum positive delta, then to prevent a lean condition, the filter is disabled and the LOAD is directly set to the new computed LOAD.<br/>
-You should usually not have to modify this, but if you do, keep in mind that because the LOAD calculation is crank-synchronous (five times per rotation), then at 6000 rpm the filter should be set to half of 3000 rpm for the same effect.
+You should usually not have to modify this, but if you do, keep in mind that because the LOAD calculation is crank-synchronous (five times per two rotations), then at 6000 rpm the filter should be set to half of 3000 rpm for the same effect.

@@ Line 13: / Line 13: @@
 * Log REQ_AFR and compare it to actual AFR. Modify this table so that they match.
 * As a sanity check, consider that at idle with consumers switched off, you should have roughly 18-21 LOAD if you are not running wild cams. Most setups will never need to alter anything but the VE table itself.
-* If you run out room at the low end (values at 0 and still too rich), but you still have room on top (for example max value is 200), subtract a number from VE Addend, and add it to the entire table. Now the result is the same as before, but you have more room to tune. Do the same if you run out of room at the top end, but have room at the bottom end.
+* If you run out of room at the low end (values at 0 and still too rich), but you still have room on top (for example max value is 200), subtract a number from VE Addend, and add it to the entire table. Now the result is the same as before, but you have more room to tune. Do the same if you run out of room at the top end, but have room at the bottom end.
 * If you run out of dynamic range, meaning both the top end and bottom end - you can multiply up the VE multiplier and divide the VE addend and the entire table by the number you multiplied the multiplier by. Also works into the opposite direction if you find that you have way too much range and not enough precision.

@@ Line 23: / Line 23: @@
 This filter corrects for jitter and limits LOAD rate of change. Axes are RPMxLOAD. 255 means straight-through, 0 means LOAD can not change. The filter limits LOAD delta to X/255*delta.<br/>
 There is also an exception - if the load jump is bigger than the constant for the maximum positive delta, then to prevent a lean condition, the filter is disabled and the LOAD is directly set to the new computed LOAD.<br/>
-You should usually not have to modify this, but if you do, keep in mind that because the load calculation is crank-synchronous (five times per rotation), then at 6000 rpm the filter should be set to half of 3000 rpm for the same effect.
+You should usually not have to modify this, but if you do, keep in mind that because the LOAD calculation is crank-synchronous (five times per rotation), then at 6000 rpm the filter should be set to half of 3000 rpm for the same effect.

@@ Line 21: / Line 21: @@
 == Load filter ==
-This filter corrects for jitter and limits LOAD rate of change. Axes are RPMxLOAD. 255 means straight-through, 0 means load can not change. The filter limits LOAD delta to X/255*delta.<br/>
+This filter corrects for jitter and limits LOAD rate of change. Axes are RPMxLOAD. 255 means straight-through, 0 means LOAD can not change. The filter limits LOAD delta to X/255*delta.<br/>
 There is also an exception - if the load jump is bigger than the constant for the maximum positive delta, then to prevent a lean condition, the filter is disabled and the LOAD is directly set to the new computed LOAD.<br/>
 You should usually not have to modify this, but if you do, keep in mind that because the load calculation is crank-synchronous (five times per rotation), then at 6000 rpm the filter should be set to half of 3000 rpm for the same effect.

@@ Line 1: / Line 1: @@
 == Algorithm ==
-The MAP sensor is sampled crank-synchronously. Five times per cycle.<br/>
+The MAP sensor is sampled crank-synchronously at fixed angles, five times per cycle, at 10bit precision, making the resolution 0.005V or 0.4kPa with a 400kPa sensor<br/>
-<b>LOAD = FILTER((VE(MAP,RPM)*VE_MULT+VE_ADDEND)*MAP)</b>
+<b>LOAD = FILTER((VE(MAP,RPM)+VE_ADDEND)*VE_MULT*IATCORR*MAP)</b>

Speed Density - Revision history

PRJ: /* Load filter */

PRJ: /* VE Table */

PRJ: /* Load filter */

PRJ: /* Load filter */

PRJ: /* Algorithm */

PRJ: Created page with "== Algorithm == The MAP sensor is sampled crank-synchronously. Five times per cycle. LOAD = FILTER((VE(MAP,RPM)*VE_MULT+VE_ADDEND)*MAP)"

PRJ: Created page with "== Algorithm == The MAP sensor is sampled crank-synchronously. Five times per cycle.
**LOAD = FILTER((VE(MAP,RPM)VE_MULT+VE_ADDEND)MAP)**"