Bosch IMSA Prototype Classes Scrutineering System - 6 CAN Specification

6 | CAN Specification
20 / 47 IMSA Prototype Class Scrutineering Logger Bosch Motorsport
6 CAN Specification
There are two IMSA CAN interfaces that may be used for communication, on these
buses the team is required to send the “Team Transmitted Channels”.
Teams will be responsible for informing IMSA and Bosch which buses will be used
for ECU and team communications. These messages may be on the same bus.
CAN Buses:
The CAN buses will be used to transfer vital information between the team and the
Scrutineering System. The buses are required to be 1 Mbit and conform to CAN
2.0B specifications.
6.1 Team Transmitted Channels
Channel Name
Short
Name
Raster
(ms)
Notes
Engine Revs
nmot
10
Engine revolutions per minute
Ignition Timing
ign_out
10
Crank angle of ignition event
Fuel Injector Mass
fuel_mass
10
Fuel mass injected per 2 engine revolutions
Fuel Rail Pressure
prail
10
Pressure measured in the high pressure fuel rail
Gearbox Drum Position
gear_drum
20
Voltage of gearbox drum angle sensor
Gearbox Flag
shift_*
20
Flag denoting, up/down shift, shift error, and
shift strategy active
Gear
gear
20
Engaged gear in transmission
FL Wheelspeed
vwheel_fl
20
Speed of FL wheel
FR Wheelspeed
vwheel_fr
20
Speed of FR wheel
RL Wheelspeed
vwheel_rl
20
Speed of RL wheel
RR Wheelspeed
vwheel_rr
20
Speed of RR wheel
Throttle Pedal
aps
50
Throttle pedal percentage
Engine Throttle(s)
ath(2)
50
Throttle blade open percentage
FL Brake Pressure
pbrake_fl
20
If only axle pressure is available, send on both L & R
FR Brake Pressure
pbrake_fr
20
If only axle pressure is available, send on both L & R
RL Brake Pressure
pbrake_rl
20
If only axle pressure is available, send on both L & R
RR Brake Pressure
pbrake_rr
20
If only axle pressure is available, send on both L & R
Mixture Map
mappos
100
Value of engine mixture map selection switch
Boost Map
bmap
100
Value of engine boost map selection switch
Display Brightness
display_b
1000
Desired scrutineering display brightness (1-6)
Fuel Consumption
Calculation
fuelcons
100
Counter starts from 0 each session
Does NOT reset during session/race
Steering Angle
steer
20
Angle of steering wheel from center
Clutch Pressure
pclutch
20
Pressure in the clutch disengagement system
Cam Angle Left Bank
Intake
Cam1Int
100
Angle of the drivers left bank intake CAM from park
Cam Angle Left Bank
Exhaust
Cam1Exh
100
Angle of the drivers left bank exhaust CAM from park
Cam Angle Right Bank
Intake
Cam2Int
100
Angle of the drivers right bank intake CAM from park
Cam Angle Right Bank
Outlet
Cam2Exh
100
Angle of the drivers right bank exhaust CAM from
park
Tire Pressure FL
ptireFL
1000
TPMS system reported absolute air pressure in FL tire
Tire Pressure FR
ptireFR
1000
TPMS system reported absolute air pressure in FR
tire
Tire Pressure RL
ptireRL
1000
TPMS system reported absolute air pressure in RL
tire
Tire Pressure RR
ptireRR
1000
TPMS system reported absolute air pressure in RR
tire
Fuel Probe Flag
b_fuelprobe
20
Fuel Probe sensor: 0 = not connected, 1 = connected