well, not really.
remember that what is changing is the fuel, so that will not (should not) affect the VE which describes the engine's efficiency.
the spark table is a description of the "ignition efficiency" of the engine also.
so, what we are doing with the fuel composition compensation is the following:
the sensor reading is used to control BLM cell 12 (which is the user parameter that you can change manually for the fuel, if you don't have the sensor) this relationship is tunable via a table.
the fuel composition value in BLM cell 12 directly increases the pulsewidth (running, transient, and cranking) to compensate for the increased delivery requirement due to the alky %
this value is then used to increase spark advance and add additional boost solenoid pulsewidth, these increases are tunable by a pair of tables.
make sense?
BTW, all this stuff works (pretty darn well), we are doing some final testing.
Bob
remember that what is changing is the fuel, so that will not (should not) affect the VE which describes the engine's efficiency.
the spark table is a description of the "ignition efficiency" of the engine also.
so, what we are doing with the fuel composition compensation is the following:
the sensor reading is used to control BLM cell 12 (which is the user parameter that you can change manually for the fuel, if you don't have the sensor) this relationship is tunable via a table.
the fuel composition value in BLM cell 12 directly increases the pulsewidth (running, transient, and cranking) to compensate for the increased delivery requirement due to the alky %
this value is then used to increase spark advance and add additional boost solenoid pulsewidth, these increases are tunable by a pair of tables.
make sense?
BTW, all this stuff works (pretty darn well), we are doing some final testing.
Bob