There are eight models in the all-new Hino 300 Hybrid range. These trucks use a new parallel hybrid system which has a Hino M550 sequential-shift five-speed automated manual transmission for easy, two-pedal operation. It can be driven in ‘D’ range as an automatic, or ‘S’ range with sequential shifting.
Depending on the truck’s operation, the new hybrid range can offer fuel savings of up to 26 per cent or better when compared with a conventional diesel truck.
To add, the Hino N04C-UR 4.0-litre diesel engine and combined electric-drive motor have 10 per cent more power and 19 per cent more torque, both at lower revolutions.
The engine has cooled EGR, an oxidation catalyst and DPR cleaner. The diesel engine delivers 110kW and 420Nm, while the new Permanent-magnet Reluctance Motor has 36kW of power and 333Nm of torque.
These models can be used in electric-drive-only EV mode in stop-start traffic (subject to the level of battery charge).
To further enhance the level of fuel consumption, and thus reduce greenhouse gas emissions, the layout of major components such as the engine, clutch, electric motor and transmission, has also been changed.
The automated clutch can now separate the diesel engine and electric motor; whereas in the previous model it was between the electric motor and transmission.
Electrical components including the motor, inverter and nickel-metal hydride battery have also been completely redesigned to reduce weight and size, and increase efficiency.
“The current system has made significant fuel savings in start-stop operations,” says Hino Australia divisional manager, product strategy, marketing and dealer development, Alex Stewart. “The new system uses the electric motor as a supplementary power source; it creates electricity by gathering kinetic energy when the truck decelerates.
“It does not use diesel power to create electricity and the diesel engine returns to idle whenever it is not required to power the truck, thereby saving more fuel.
“When accelerating or climbing a hill, the new hybrid uses electric power to supplement diesel power, so the diesel operates with reduced load.
“The flat torque curve from the combination of diesel and electric power means Hino can use a five-speed transmission to save on gear changes.
“When descending hills and braking, the clutch disconnects the diesel engine from the motor, so the motor can act as a generator and maximise the amount of electricity gathered.
“In Hino’s new hybrid system, the accelerator pedal is a potentiometer: if the driver requests, say, 280Nm of torque, the electronic control units for the engine and hybrid system network provide the ideal split of diesel and electric power.”
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