Big rigs could be a lot cleaner in the near future if Volvo Trucks’ hybrid semi concept eventually goes into production. By combining the firm’s existing model D13 12.8-liter diesel inline six with electric assistance, the brand estimates the powertrain can cut combined fuel consumption and CO2 emissions by around 30 percent.
The hybrid setup harvest energy for the batteries when driving downhill and under braking. The company’s I-See powertrain management system then uses navigation data to plan out what combination of internal combustion and electric power would most efficient over the next 3.1 miles (5 kilometers) of the route.
The Volvo Concept Truck can also drive up to 6.2 miles (10 km) purely on electric power. The energy regeneration also lets the engine shut off for up to a third of the time while the big rig is cruising, and the company estimates this ability alone can cut fuel consumption by 5 to 10 percent.
Volvo first showed the Concept Truck in May 2016. However, the hybrid drivetrain is new for its latest evolution. In addition to the cutting-edge system, the company’s engineers also took the opportunity to update the experimental model’s aerodynamics and rolling resistance.
"Some of these developments have already been introduced to our trucks, and some will be introduced in the near future. The hybrid powertrain is partly based on knowledge and experience from Volvo Buses' hybrid and electric buses,” Åke Othzén, Chief Project Manager from Volvo Trucks, said in the concept’s press release.
The Volvo Concept Truck is among a wave of vehicles aiming to clean up big rigs. For example, Mercedes-Benz aims for the Urban eTruck concept to have a similar revolution for heavy-duty hauling. The full EV can go just 124 miles (200 km) charge, though, so its uses seem more limited than this Volvo. In addition, the startup Nikola Motor Company claims that its One hydrogen fuel cell semi can produce 1,000 horsepower (746 kilowatts) and can allegedly travel up to 1,200 miles (1,931 kilometers) on a charge. Sometime soon, we might see Tesla's entry in the green 18-wheeler segment, too.
Source: Volvo Trucks
Gallery: Volvo Concept Truck hybrid semi
Volvo Trucks' latest concept vehicle tests a hybrid powertrain for long haul transport
With the Volvo Concept Truck, Volvo Trucks has developed its first hybrid vehicle designed for long haul applications. In combination with the vehicle’s other improvements, the total reduction in fuel consumption and CO2 is around 30 per cent.
Volvo Trucks first unveiled the Volvo Concept Truck in May 2016, and has now developed and enhanced the vehicle even further. In addition to the improvements in aerodynamics, rolling resistance and reduced weight, the new version also features a hybrid powertrain - one of the first of its kind for heavy-duty trucks in long haul applications.
"We strive to be at the forefront of electromobility and to constantly push the limits when it comes to reducing fuel consumption and emissions," says Claes Nilsson, CEO at Volvo Trucks. "Over the coming years, as society moves more and more towards renewable energy, we strongly believe that electromobility and hybrid technology will become increasingly important. The powertrain in our concept truck has been developed to improve transport efficiency and thereby help the industry towards sustainable transport. With the concept truck we will gain valuable knowledge and experience, which will help us develop the technology further."
The hybrid powertrain works by recovering energy when driving downhill on slopes steeper than one per cent, or when braking. The recovered energy is stored in the vehicle's batteries and used to power the truck in electric mode on flat roads or low gradients. An enhanced version of Volvo Trucks' driver support system I-See has been developed specially for the hybrid powertrain, which analyses upcoming topography to calculate the most economical and efficient choice between the diesel engine and the electric motor, as well as the optimal time to use the recovered energy.
In long haul transportation, it is estimated that the hybrid powertrain will allow the combustion engine to be shut off for up to 30 per cent of the driving time. This will save between 5-10 per cent in fuel, depending on the vehicle type or specification, and its drive cycle. It also offers the ability to drive in full electric mode for up to 10 kilometres, enabling the vehicle to operate with zero emissions and low noise.
"Today, long haul transport accounts for a significant share of the total energy consumption in the transportation sector. Using hybrid technology, the potential reduction in fuel and emissions is considerable and an important step towards reaching both our and society's environmental goals for the future," says Lars Mårtensson, Director Environment and Innovation, Volvo Trucks.
The Volvo Concept Truck also builds on many of the gains achieved by its predecessor, namely improved aerodynamics, rolling resistance and reduced vehicle weight. "This is a platform for verifying several new technologies for increasing transport efficiency," says Åke Othzén, Chief Project Manager, Volvo Trucks. "Some of these developments have already been introduced to our trucks, and some will be introduced in the near future. The hybrid powertrain is partly based on knowledge and experience from Volvo Buses' hybrid and electric buses."
Facts: Volvo Concept Truck
- The Volvo Concept Truck is the result of the Swedish part of a bilateral research project involving both the Swedish energy authority Energimyndigheten and the US Department of Energy.
- An American Concept Truck, the SuperTruck project, was developed as part of the US Department of Energy's SuperTruck programme, which promotes research and development to improve transport efficiency for long-haul operations in North America.
Facts: Electric hybrid powertrain
- Recovers energy when driving downhill on slopes steeper than one per cent, or when braking. The recovered energy is stored in the vehicle's batteries and used to power the truck in electric mode on flat roads or low gradients.
- An enhanced version of Volvo Trucks' driver support system I-See, which has been developed specially for the hybrid powertrain, analyses the upcoming topography using information from GPS and the electronic map. Using an advanced algorithm, based on the road's elevation and expected speed, the system calculates the most economical and efficient use of both the diesel engine and the electric motor, as well as the optimal times to use the recovered energy.
- In long haul transportation, it is estimated that the hybrid powertrain will allow the combustion engine to be shut off for up to 30 per cent of driving time. This will save between 5-10 per cent in fuel, depending on the vehicle and its drive cycle.
Specifications: Volvo Concept Truck
Truck model: Volvo FH
Engine: Volvo D13 Euro 6 Step C