BBRIXRAE
ENGINEERING MODEL v0.1

HYBRID STEAM–ELECTRIC POWERTRAIN

See the system run.

An animated ten-hour simulation of the engine, induction steam generator, batteries, PMSG recovery, and APU support.

01

Live powertrain model

SYSTEM HOLD
Realistic BrixRae powertrain with a four-cylinder steam engine, gearbox, inline driveshaft PMSG, compact Kubota diesel APU, batteries and induction steam generator
560 kWh battery100% SOC
Kubota diesel APU25 kW · READY
HP + LP steam engine112 kW shaft
Induction steam generator82 bar · 537°C
Inline driveshaft PMSG7 kW live
Electrical flow Steam flow RecoveryUrban stop-and-go · 8 mph
Electrical flowSteam flowMechanical rotationAnimation indicates state—not physical RPM.
02

Live cumulative energy meters

0.00 OF 10.00 HOURS
Steam-generator input0.0 kWh

114 kW average demand1,145 kWh at 10h

PMSG generation0.0 kWh

63 kW 10-hour average630 kWh at 10h

Braking recovery0.0 kWh

coasting and descent capture110 kWh at 10h

APU generation0.0 kWh

25 kW while commanded250 kWh at 10h

Battery contribution0.0 kWh

temporary net discharge155 kWh at 10h

Total energy supplied0.0 kWh

0% of elapsed demand1,145 kWh at 10h

Elapsed demand0.0 kWh
0.0 recovery + 0.0 APU + 0.0 battery
Energy supplied0.0 kWh
03

Route state

Rolling mixed freight
Elapsed0.0 h
Speed8 mph
Grade0.0%
ModeUrban stop-and-go
04

Energy controller

10-HOUR MODEL
Mechanical work1,122 kWh
Boiler input · no recovery2,726 kWh
Fresh input · 58% reduction1,145 kWh
PMSG + braking recovery740 kWh
PMSG + braking740 kWh630 PMSG · 110 braking
Driving APU generation250 kWh10.0 hours at 25 kW
Arrival battery72% SOC155 kWh recharge needed
Overnight APU generation155 kWh6.2 parked hours
04

Power generation across the daily cycle

GENERATION MATCHES DEMAND
Thermal input required1,145 kWh
PMSG generation630 kWh
Braking / descent recovery110 kWh
APU during 10-hour route250 kWh
APU during overnight parking155 kWh
10-hour routePMSG + braking: 740 kWh · APU: 250 kWh
6.2 hoursParked APU restores 155 kWh
7.8 hours100% SOC · standby
16.2 hr calculated APU runtime405 kWh total APU generation24.3 gal projected APU fuel100% final battery SOC

MODEL BOUNDARY

Every route includes real delivery-city operation.

The ten-hour cycle mixes highway grades with urban entry, stop-and-go traffic, delivery stops, acceleration, braking, and departure back to the highway. The controller credits PMSG and braking recovery from those changing conditions before commanding the APU; parked operation then produces only the energy needed to return the pack to 100% SOC.