JMSMotorsport Posted December 30, 2021 Share Posted December 30, 2021 Just chasing some more info when the PCM is in driver demand does this mean that there is zero torque reduction happening and the engine is getting all available torque? Or is there a Driver Demand torque table? I tried to search in the software but cam back with nothing. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted December 30, 2021 Share Posted December 30, 2021 It generally means whatever the pedal is requesting. It can still be limited via various means however. Quote Link to comment Share on other sites More sharing options...
abs351 Posted December 30, 2021 Share Posted December 30, 2021 Hi JMS, I have noticed tuners are turning off torque control logic to bypass this based on tunes I have seen, which I believe are not ideal. Quote Link to comment Share on other sites More sharing options...
JMSMotorsport Posted December 30, 2021 Author Share Posted December 30, 2021 I had read this and is what I wanted to avoid as the actual logic influences to many other things. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted December 31, 2021 Share Posted December 31, 2021 1 hour ago, abs351 said: Hi JMS, I have noticed tuners are turning off torque control logic to bypass this based on tunes I have seen, which I believe are not ideal. This is what people did 15 years ago back in the CAPA days when many tables were not available. It is highly recommended to NOT do this. It breaks many functions in the vehicle and causes no end of side effects. Quote Link to comment Share on other sites More sharing options...
FencePost Posted January 10, 2022 Share Posted January 10, 2022 As Roland stated, Driver demand torque is the requested brake torque(crankshaft torque) that is translated from the pedal position. The actual torque delivered to the driveline(before trans) is the driver demand torque minus various torque reductions such as gear shift events, engine protection like knock and oil temp as well as trans gear based reductions. The gear based reductions includes the boost limits for the first few gears to limit the tractive force at the tyre to prevent tyre slip. If you tune the torque limits per gear correctly then the boost control should automatically control the engine torque for a given gear. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.