This description was translated using AI. Some expressions may differ slightly from native technical English.
Vehicle Specifications
Drivetrain: Front-wheel drive (FF)
Vehicle Type: Minivan
Dimensions: 2.25 m wide, 5.0 m long
Powertrain: Series hybrid system consisting of a 4-cylinder E-Turbo engine (generator-only) and a single drive motor
Generator Rated Output: 66 [SW]
Seating Capacity: 6 passengers
Fuel Economy: 2.33 km/L (measured value) (※ 2.83 km/L–)
Fuel Tank Capacity: 93.75 L
Drive Battery: 11 small units (※ 4 small units)
Price: $16,185 (※ $12,761)
Vehicle Weight: 822 mass (※ 651 mass)
Top speed and acceleration are comparable to real-world Japanese minivans.
※ Parameters marked with ※ are compared against the station wagon model.
Features
100% motor-driven; even when the engine is running, it operates at low RPM, allowing for very quiet driving
Second- and third-row seats can be folded to create a flat cargo floor
Large electric sliding doors on both sides
Three driving modes: ECO / Normal / POWER
Silent Mode can be selected simultaneously to prevent engine startup
When stopped, Power Supply Mode (High / Low) can be selected; the vehicle can be used as a mobile generator
Charging / power output ports are accessible through the front grille, so they remain usable even if the hood cannot be opened due to battery depletion
Cruise control adjustable from 30 to 170 km/h in 1 km/h increments
Traction Control System (TCS) linked to road incline and reverse gear
Front differential improves cornering performance, especially at low to mid speeds
Display Information (Supplement)
ODO: Total mileage
km/L: Current average fuel economy
Displays 0 until the engine runs for the first time
Control Logic
The engine automatically starts and stops to keep the drive battery charge above 85%
Normally, the engine operates only at its most efficient RPM range
If battery charge becomes critically low, the gear ratio is reduced and engine RPM increases
Power Supply Mode – High (GH):
Engine speed increases to the maximum allowable level that cooling can handle, generating power at full output
Power Supply Mode – Low (GL):
Engine RPM is always maintained at the most efficient operating point
Important Notes
If the auxiliary battery is depleted for any reason, activate the emergency circuit located at the lower right of the driver’s seat to connect the drive battery and auxiliary battery
When supplying power to external devices via the grille-mounted power port, always enable Power Supply Mode (GL or GH), otherwise the auxiliary battery may be depleted
There is a short delay of several seconds before the engine starts after battery charge drops due to external power usage (to allow boost pressure to build)
Even in Silent Mode, the engine will start if battery charge becomes critically low
Deceleration relies mainly on regenerative braking on the front wheels, so braking feel is relatively gentle
If the battery warning light turns on, charge externally or briefly activate the emergency circuit to recover
Fuel consumed during Power Supply Mode is excluded from fuel economy calculations
Other Information
No MOD parts or XML editing were used
Modification, disassembly, reuse of parts, and redistribution without credit are all allowed
Feedback and impressions are very welcome!
Bonus / Development Notes
It was found that increasing the number of crankshafts directly reduced generation efficiency, so four cylinders were the practical limit.
A large pump-based boosting system compensates for low-RPM operation, and a 9× step-up gearbox connects the engine to the generator, improving fuel efficiency.
Other configurations were also tested, including:
A naturally aspirated 2-cylinder ME alternator generator
A supercharged 3-cylinder generator
However, this configuration achieved the best results in both fuel economy and peak generation output.
The powertrain design received particular attention. After extensive prototyping and testing, this setup felt like the optimal solution for an onboard generator dedicated to driving a single motor.
Fuel Economy Measurement Method
Fuel consumption was calculated using the per-tick fuel usage obtained from two channels of the engine’s cylinder composite signal.
The test started at 86% drive battery charge, maintaining an average speed of about 105 km/h over approximately 40 km.
As long as the vehicle is driven normally without crashes, fuel economy is unlikely to fall below 2.33 km/L.
A more affordable station wagon version is available here:
→ [url=https://steamcommunity.com/sharedfiles/filedetails/?id=3656770702]https://steamcommunity.com/sharedfiles/filedetails/?id=3656770702[/url]
