The first heavy duty hybrid truck uses diesel and electric power in parallel to cut fuel consumption and CO2 emissions by up to 30 percent in urban refuse collection. But that’s only half of it. While substituting the diesel engine at start up and low speeds, electric power improves acceleration for the driver – and cuts the noise level for everyone else.
UP AND RUNNING ON SELECTED MARKETS
Field testing has been quietly carried out in France, UK and the Netherlands since 2008. The first 100 heavy hybrid trucks in production are destined for the following markets: Sweden, Norway, Finland, Denmark, Britain, France, Germany, Austria, Switzerland, Italy, the Netherlands, Belgium and Luxembourg.
26 TONNES OF PEACE AND QUIET
Distribution and waste disposal in urban areas have the most to gain. It’s here, where all the low speed starting and stopping takes place, that electric technology can save most fuel. Even airflow spoilers are used to improve the fuel economy. And with up to 26 tonnes of total weight possible, savings can quickly add up.
The electric motor, or Motor Drive System, is sandwiched between the 7-litre diesel engine and the automated I-Shift transmission. This way the diesel engine can come in seamlessly once the high torque electric motor has got the speed up, and the two continue in parallel. With help of the generator, recuperated brake energy is used both to drive the electric motor and to charge the lithium-ion batteries – so no further charging is needed.
CUTTING CO2 EMISSIONS, FUEL CONSUMPTION AND CITY NOISE
Compared to a conventional diesel truck, fuel consumption can be trimmed by up to 20 percent for distribution. Refuse trucks can expect to cut fuel consumption by 20 percent – or up to 30 percent when a plug-in compactor unit is used instead of the vehicle’s driveline. Correspondingly, CO2 emissions can be reduced by up to 30 percent. The vehicle’s noise level can be cut in half during initial acceleration.