You ever get more info on these newer tables added? I have not found anything, quite frustrating.
Reference indicated engine torque high and low flaps
The engine doc I found, that I am afraid to share due to copyright, doesnt so much tell you what a table is for. Instead, There are many functions that defined as using data from a given table.
Those two tables 'reference indicated torque' and 'engine torque flaps' appear to be related in operation and have something to do with cam timing.
"This module delivers the reference indicated engine torque TQI_REF, basic indicated engine torque TQI_BAS
and other basic torque values for the torque model in homogeneous combustion mode.
In order to meet the requirements of a system configuration with Variable Valve Lift (VVL), TQI_REF is also
calculated simultaneously for each Intake Bank and each position of the Variable Valve Lift Actuator (TQI_REF_
CBK_SEL)"
Under fair, use I think we can get away with this...
70.1.1 (TQM) Setpoint ignition angle
In homogeneous combustion mode (LV_HOM_RUN = 1), this module delivers the output IGA_DIF_TQ_REQ. The
output IGA_DIF_TQ_REQ represents the ignition retard with reference to IGA_REF_COR that is necessary to
generate the indicated engine
torque TQI_SP. IGA_DIF_TQ_REQ is a function of the ignition angle efficiency setpoint EFF_IGA_SP, which, in turn,
is calculated out of the Reference Indicated Torque TQI_REF and the actual efficiencies EFF_SCC_AV, EFF_EGR_
HOM, EFF_TQI_COR_CUS, and EFF_LAMB_AV.
70.1.3 Reference and Basic Torque
This module delivers the reference indicated engine torque TQI_REF, basic indicated engine torque TQI_BAS
and other basic torque values for the torque model in homogeneous combustion mode.
General Information
In homogeneous combustion mode (LV_HOM_RUN = 1), this module delivers the output IGA_DIF_TQ_REQ_
CBK_SEL. The Intake bank and VVL-position selective output IGA_DIF_TQ_REQ_CBK_SEL represents the ignition
retard with reference to IGA_REF_COR_CBK_SEL that is necessary to generate the indicated engine torque
TQI_SP_CBK_SEL. IGA_DIF_TQ_REQ_CBK_SEL is a function of the ignition angle efficiency setpoint EFF_IGA_SP_
CBK_SEL, which, in turn, is calculated out of the Reference Indicated Torque TQI_REF_CBK_SEL and the actual
efficiencies EFF_SCC_AV, EFF_EGR_HOM, and EFF_LAMB_AV.
During certain driving or operating modes (e.g. Economy Mode ), the ignition intervention will be disabled by
the Dynamic Torque Manager (i.e. LV_TQ_IGA_ACT = 0). In that case, IGA_DIF_TQ_REQ_CBK_SEL will be set to a
passive value of 95.625 °Crk, resulting in a final ignition angle setpoint equal to IGA_BAS_COR_CBK_SEL.
In order to smooth the ignition angle setpoint behavior during transitions out of PUC, the efficiency EFF_SCC_
AV might be replaced by a passive value of 1. This option can be chosen by the calibration switch LC_EFF_
MOD_SCC (=0).
In order to meet the requirements of a system configuration with Variable Valve Lift (VVL), IGA_DIF_TQ_REQ_
CBK_SEL and EFF_IGA_SP_CBK_SEL are calculated simultaneously for each Intake Bank and each position of
the Variable Valve Lift Actuator..
The torque setpoint TQI_SP_IGA is converted into a Bank/VVL position selective Setpoint TQI_SP_CBK_SEL to
account for the impact of the different torque loss contributions and for possbile setpoint limitations.
There are a number of pages that refer to 'reference indicated torque'
There are a number of diagram I tried to include but the site is lame and wont let me upload images that are not tiny.
Hope this helps.
