Description of numeric CAN bus inputs and outputs of HTG tuning products.
HTG inputs #
Due to significant amount of inputs table below presents unit types used for various inputs. HTG tuning SUITE presents desired by certain input
| Unit | Scaling | Description |
|---|---|---|
| range: [%] | 0 % – 100 % 0 – 1024 (RAW) | |
| angle speed: [RPM] | RPM (RAW) | |
| pressure: [kPa] | kPa (RAW) | |
| torque: [Nm] | Nm (RAW) | |
| logic: [0/1] | 0 (off) – 1 (on) 0 – 1024 (RAW) | |
| temperature: [C] | *C (RAW) | |
| angle: [deg] | deg (RAW) | |
| speed: [kph] | kph (RAW) | |
| time: [uS] | uS (RAW) | |
| lambda: [lam] | ||
| voltage: [mV] | mV (RAW) |
HTG outputs #
| Signal | Signal Value | Description |
|---|---|---|
| torque: ENGINE [Nm] | Nm (RAW) | Engine torque. Depending on TRQ estimation strategy presents HTG calculated torque or reports TRQ input from ECU |
| torque: BLIP level [%] | 0 % – 100 % 0 – 1024 (RAW) | Upon downshift, when GCU decides if ECU needs to rise RPM, GCU sets signal to on |
| torque: CUT level [%] | 0 % – 100 % 0 – 1024 (RAW) | Upon upshift, when GCU decides if Torque reduction is needed, GCU sets signal to on |
| torque: CAPACITY [Nm] | Nm (RAW) | Current adapted clutch torque capacity |
| gear: CURRENT | R (-1), N/P(0) to gear count | Currently driven gear. Changes after shift process completion |
| gear: CURRENT /w Park | P (-2), R (-1), N(0) to gear count | Current gear including PARK position |
| gear: NEXT | R (-1), N/P(0) to gear count | Gear which is about to be engaged. This value will change before the shift (when no shift is occuring, this value is equal to gear: CURRENT) |
| gear: TARGET | R (-1), N/P(0) to gear count | Final targetted gear. This value changes immediately after upshift/downshift is requested. Range depends on queue settings. |
| gear: RATIO | 0:1 – 10:1 0 – 10240 (RAW) | Current calculated gear ratio based on internal sensors. |
| preselection: CURRENT ** | NONE (0) to gear count | Currently preselected gear |
| preselection: NEXT ** | NONE (0) to gear count | Preselection after shifting to gear:NEXT |
| Auto UPshift schedule [RPM or kph] | RPM or kph (RAW) | Value which will trigger automatic UPshift. RPM or KPH depend on strategy selected |
| Auto DOWNshift shcedule [RPM or kph] | RPM or kph (RAW) | Value which will trigger automatic UPshift. RPM or KPH depend on strategy selected |
| Mode | 0(R), 1(P), 2(N), 3(D), 4(M), 5(S) | Active transmission selector mode (P/R/N/D/S) |
| Transmission temperature [Celcius] | *C (RAW) | Current transmission temperature |
| CL shift mode | Type of currently executed shift. Mandatory for majority of OEM ECUs to determine type of torque management. | |
| Reverse light status [0/1] | 0 (off) – 1 (on) 0 – 1024 (RAW) | Reverse light status |
| Launch control status | Status of launch control / transbrake | |
| Takeup status | ||
| Over-rev protection: active [0/1] | 0 (off) – 1 (on) 0 – 1024 (RAW) | ON when engine can’t do downshift due to overrev protection |
| Over-rev protection: shift locked [0/1] | 0 (off) – 1 (on) 0 – 1024 (RAW) | ON when downshift was requested while on overrev protection zone |
| Vehicle speed [kph] | km/h (RAW) | Calculated vehicle speed based on internal sensors and differential ratio combined with wheel diameter. This value is acurate for driven wheel speed |
| Input shaft speed [RPM] | RPM (RAW) | Input shaft speed value (internal sensor) |
| Input shaft speed target [RPM] | RPM (RAW) | ISS target based on closed loop operation and target table values |
| Calculated RPM after UPshift [RPM] | RPM (RAW) | Value of engine speed on higher gear |
| Calculated RPM after DOWNshift [RPM] | RPM (RAW) | Value od engine speed on lower gear |
| Calculated NEXT gear RPM [RPM] | RPM (RAW) | Value of engine speed of currently set gear: NEXT. Outside shift scenario replicates INPUT SHAFT SPEED |
| Shaft A speed [RPM] | RPM (RAW) | Intermediate shaft A speed value |
| Shaft B speed [RPM] | RPM (RAW) | Intermediate shaft B speed value |
| Output shaft speed [RPM] | RPM (RAW) | Output shaft speed (if sensor is avaliable it’s direct sensor output, if sensor is not present in transmission, calculated based on gear ratios) |
| Clutch A pressure [kPa] | kPa (RAW) | Clutch pressure value. Scaling is adapted during static adaptation. |
| Clutch B pressure [kPa] | kPa (RAW) | Clutch pressure value. Scaling is adapted during static adaptation. |
| Clutch A slip(%) | 0 % – 200 % 0 – 2048 (RAW) | Clutch slip – speed in comparison to INPUT SHAFT SPEED |
| Clutch B slip (%) | 0 % – 200 % 0 – 2048 (RAW) | Clutch slip – speed in comparison to INPUT SHAFT SPEED |
| Shaft A speed [RPM] | RPM (RAW) | Intermediate shaft speed |
| Shaft B speed [RPM] | RPM (RAW) | Intermediate shaft speed |
| Selector A pos | pos (RAW) | Relative selector position |
| Selector B pos | pos (RAW) | Relative selector position |
| Selector C pos | pos (RAW) | Relative selector position |
| Selector D pos | pos (RAW) | Relative selector position |
| Adaptation: status | ||
| Adaptation: gear | R (-1), N/P(0) to gear count | Currently adapted (static adaptation) gear |
