BrixRae Limited
ENGINEERING MODEL v0.1

DOUBLE-COMPOUND STEAM–ELECTRIC POWERTRAIN

Steam power for the long haul.

A ten-hour route and complete 24-hour energy cycle showing the double-compound steam engine delivering sustained propulsion, patented valves matching power to demand, and recovery systems reducing electrical input.

BrixRae Limited logoBrixRae LimitedGUIDED ENGINEERING TOUR

Start the guided tour for the complete BrixRae energy-cycle explanation.

PROFESSIONAL NARRATION
Primary propulsionSteam engine
Patented admission range8–40%
Thermal recovery offset58%
Recurring electric demand1,000 kWh
Net recovered electricity600 kWh
01

Live powertrain model

SYSTEM HOLD
BrixRae powertrain with a four-cylinder double-compound steam engine, simplified gearbox, supporting permanent magnetic motor generator, Kubota APU, batteries and induction steam generator
560 kWh battery100% SOC
Kubota diesel APU25 kW · READY
Double-compound steam engine16% patented variable admission · PRIMARY PROPULSION
Induction steam generator82 bar · 537°C
Permanent magnetic motor generator180 kW torque support
Electrical support Primary steam power RecoverySteam propulsion · torque support · 16% admission · 8 mph
Electrical flowSteam flowMechanical rotationAnimation indicates state—not physical RPM.
02

Live cumulative energy meters

0.00 OF 10.00 HOURS
Total recurring demand0.0 kWh

ISG + permanent magnetic motor generator + every auxiliary1,000 kWh at 10h

Gross permanent magnetic motor generator recovery0.0 kWh

braking, descent and otherwise-wasted energy750 kWh at 10h

Permanent magnetic motor generator traction consumption0.0 kWh

electric propulsion and torque assist150 kWh at 10h

Net permanent magnetic motor generator contribution0.0 kWh

gross recovery minus traction use600 kWh at 10h

APU generation0.0 kWh

25 kW during the route250 kWh at 10h

Battery contribution0.0 kWh

temporary net discharge150 kWh at 10h

Elapsed demand0.0 kWh
0.0 gross recovery − 0.0 permanent magnetic motor generator use + 0.0 APU
Net permanent magnetic motor generator contribution0.0 kWh
03

Supporting electrical recovery

COMPLEMENTS STEAM PROPULSION
Gross regeneration captured750 kWh
−
Temporary torque support150 kWh
=
Net recovered contribution600 kWh
04

Route and traction state

Rolling mixed freight
Elapsed0.0 h
Speed8 mph
Steam admission16%
Permanent magnetic motor generator stateMotoring
05

Target energy controller

ROLLING MIXED FREIGHT CASE
Gross steam-cycle basis2,700 kWh
Integrated first-stage offset · 58%1,566 kWh
Initial ISG electrical benchmark1,194 kWh
Final recurring demand gate1,000 kWh
Primary sustained propulsionSteam enginedouble-compound torque through the simplified gearbox
Patented demand control16% admissionindependent piston stroke rises only with road demand
Thermal recovery offset58%condenser, exhaust and feedwater heat reused
Net electrical recovery600 kWh750 recovered − 150 used for torque support
06

Energy support across the complete daily cycle

FULL-TO-FULL BATTERY
Total recurring electrical demand1,000 kWh
Gross motor-generator recovery750 kWh
Temporary torque support150 kWh
Net recovered electricity600 kWh
Route APU250 kWh
Parked APU150 kWh
10-hour steam-powered routeDouble-compound engine provides sustained propulsion · recovery reduces electrical input
6.0 hoursParked APU restores 150 kWh
8.0 hours100% SOC · 200 kWh capacity held in reserve
16.0 hr actual APU runtime400 kWh actual APU generation24.0 gal projected APU fuel100% final battery SOC

PROPULSION HIERARCHY

The steam engine does the sustained work.

The four-cylinder double-compound steam engine is the truck's primary propulsion source. Patented valves regulate each cylinder's piston stroke, holding admission near 8–10% at highway demand and moving toward 40% only for sustained climbs. The permanent magnetic motor generator provides short-duration torque support and recovers braking energy. Condenser, exhaust and feedwater heat recovery reduce the electrical input required to produce each new steam pulse.