Wednesday, January 29, 2014

V32 available

News:

  • raised electric aid lower bound to 2A
  • better error messages when pids are missing


PIDs and Charts

Here's a summary with the required and optional PIDs for some common charts:

PIDs / AnalysisTemperatureMileagePulse & GlideRegenBrakeAidMaps
Speed (OBD)(km/h)RRRORRO
Engine RPM(rpm)RRO
Batt Pack Current Val(Amperes)RRO
State of Charge(%)R
Wheel Cylinder Pressure Sensor(V)RORO
Regen Cooperation(Off/On)RRRO
Accel Pedal Pos #1(%)ROO
Actual Engine Torque(Nm)RORO
Trip Distance(km)RR
Fuel used (trip)(l)RR
Fuel flow rate/minute(cc/min)
Engine Coolant temperatureRR
HV System IndicatorOO
Ambient TemperatureO
GPSOR
R = Required
O = Optional

Sunday, January 26, 2014

Electric Aid at higher SOC levels

Higher SOC level leads to higher electric aid to the petrol engine.
This chart shows the entry in an highway on the acceleration lane.
SOC was nearly 80% when I begun accelerating.
That led to a sustained current of more than 20A for 30 seconds.
Also note as the RPMs, after the initial spike, decrease while the speed increases.

Friday, January 24, 2014

Electric contribution to the petrol engine

It's common knowledge that the electric engine helps the main engine while travelling, but how much?
The new version of Torque Log Analyzer has a couple of charts that may answer that question.

The Electric Aid chart shows how many Amperes flow from the HV battery to the electric engine while the petrol engine is on. This current is used to enhance the power given by the petrol engine to the car.
Note that this chart doesn't include current used for EV mode, just the one used to help the internal combustion engine.
Some current peaks are observed primarily when the engine starts, but there's some little contribution even while cruising.
That was a low speed, urban trip, now here is an highway trip, with higher speed and lower variations.
There's a small but somewhat constant electric contribution to the cruise.
The other available chart is the scatter chart that shows observed Current values at various SOC levels.
It would be interesting to check if various SOC levels lead to different available currents.
This may require a long and varied trip to check out.

V31 Released

News:

  • Electric Aid is now considered at 1A value
  • stats about N (percent usage and longest sequence)
  • some code was rewritten for faster execution