The new Truck & Bus Platform with Advanced Hydrostatic Drivetrain works like the Hydraulic Hybrid. The drivetrain reduces the fuel consumption and emissions by 33 to 45%, and significantly improves the driving performance. The Total Cost of Ownership (TCO) is reduced by 10 to 15%.
| |
US |
Metric |
| Vehicle weight |
16 to |
16 to |
| Drivetrain (w/o fuel) |
2,820 lbs. |
1,280 kg |
| Engine |
312 hp 165 lbs. |
230 kW 75 kg |
| Wheel motors (4) |
4,900 HP 925 lbs. |
3.600 kW 420 kg |
| Torque at wheel |
14,750 ft.lb. |
20,000 Nm |
| Accumulator (HP) |
11 MJ (249 hp•min) |
11 MJ (183 kWּmin) |
| Speed (max.) |
62 mph |
100 km/h |
| Travel |
620 miles |
1,000 km |
The four, six or eight hydraulic wheel motors drive and brake the vehicle. They allow for outstanding acceleration and better braking performance than current drum or disk brake systems. New brakes or brake pads are not required and Brake dust is not produced.
How it works: The Hydraulic Free-Piston Engine (HFPE) pumps pressurized fluid into the accumulator (energy-storing device) and will be turned off when the accumulator is charged. The fluid drives the wheel motors up to maximum speed without shifting. When braking, the motors are reversed and pump the entire braking energy back into the accumulator. The maximum wheel loads during braking determine the size of the wheel motors for providing best braking performance.
The highly charged HFPE with Piston Impulse Charger and exhaust energy recuperation runs very efficiently at high combustion pressure and constant speed. (See Section: DRIVETRAIN) Significantly less fuel is used (-30%), and the recuperation of all braking energy reduces the fuel consumption, by a total of 45% in the City and 33% on the HWY. The costs for maintenance are lower.
Truck – Front axle
Truck – Rear axle
The weight of 1.280 kg (2,820 lbs.) for the complete drivetrain is significantly less than that of conventional drivetrains and less than 1/4 of the weight of the battery for a comparable electric truck. The lower weight and space for the drivetrain provide additional space and payload. The higher driving performance and lower maintenance costs (brakes, engine) reduce the TCO further.
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