Volvo Car Corporation will introduce plug-in hybrids (including diesel electric) on the market in 2012

PHEV Diesels are way overdue, so hats off to Volvo.

Volvo Cars is introducing a series-produced plug-in hybrid as early as 2012.

Pure electric power from the battery will cover the daily transport needs of 75 percent of European drivers. For longer distances, an efficient diesel hybrid engine automatically takes over. The combined range is about 1,200 kilometres. Carbon dioxide emissions will average out at 49 grams per kilometre, with fuel consumption of 1.9 litres per 100 km.

Volvo is convinced that in the future, customers will continue to want safe, comfortable cars with good driving properties and generous load-carrying ability, no matter if they are powered by electricity or other fuels.

Plug-in hybrids are an attractive car type offering the user the best from both electric power and conventional drivelines: extremely low fuel consumption and CO2 levels, combined with a long range and high performance.

"The new Volvo plug-in will be a truly enjoyable car to drive, featuring Volvo's high safety and comfort standards. At the same time, CO2 levels and fuel consumption will be as low as half that available on the market today." says Magnus Jonsson, Senior Vice President Product Development at Volvo Cars.

Volvo plug-in hybrid has several advantages:

• Fuel consumption, running costs and CO₂ emissions are very low.
• The car is a "normal" Volvo, with all its customary good properties.
• It is conveniently recharged at home via a regular wall socket.
• It is an enjoyable car to drive, offering high performance.

Electric power with CO₂ levels close to zero

Electricity is highly suited as a car fuel. The electric motor has a high efficiency rating and consumes about one-fifth as much energy as a corresponding engine running on fossil fuel. Volvo's plug-in hybrid cars will be propelled by a robust electric motor that receives its power from a lithium-ion battery. What is more, additional electricity is generated every time the car brakes.

The battery is conveniently recharged at home via a regular wall socket. Electricity as a fuel is far cheaper than petrol or diesel, which results in low operating costs. The battery will take about five hours to recharge.

The range will be about 1,200 kilometres, just like in a conventional diesel car. The plug-in hybrid will be able to be driven up to 50 kilometres on pure electric power and when running on the battery, emissions from the exhaust pipe will be non-existent. If the battery is recharged using electricity from renewable sources, the net emission of CO2 will be close to zero, even in a lifecycle perspective.

Efficient diesel engines as a complement

As a complement to the electric motor, one of Volvo's fuel-efficient diesel engines is also fitted under the bonnet - optimised to run on renewable synthetic diesel and complying with the tough forthcoming exhaust emission requirements.

The diesel engine can be run separately or in combination with the electric motor for optimal power and energy utilisation. For example, the diesel engine can support or replace electric power at high speeds or when the battery charge drops, while the electric motor can offer additional torque at low engine revs. Being able to combine these two power sources makes it possible to offer high performance and trouble-free use by the owner.

Most car trips cover short distances, to and from work. This means that the forthcoming Volvo plug-in hybrid will cover the transport requirements of most people. For longer distances, the diesel engine starts up automatically, giving the car the same properties and range as a conventional diesel car.

According to the standardised NEDC certification driving cycle, CO2 emissions from Volvo's plug-in hybrid will be lower than 50 g/km.

Plug-in hybrids - market potential

The purchase price of a plug-in hybrid is expected to be considerably higher than for a conventional diesel car since the batteries are still expensive. Fuel costs on electric power will be about one-third compared with driving on diesel, and this partially compensates for the higher purchase price, although not fully.

Volvo Cars assesses that plug-in hybrids will be commercially viable for certain customer categories in 2012, gradually widening in appeal as battery price and performance continuously improve.

"We are focusing strongly on plug-in hybrids in order to meet the demands for low CO2 emissions and to provide sustainable road transportation. We naturally expect that the relevant authorities will offer subsidies to boost developments, speeding up the creation of a market for this type of car," says Magnus Jonsson.

Plug-in hybrids the result of industrial cooperation

In January 2007, Volvo Cars and energy supplier Vattenfall launched a joint project with the aim of testing and developing plug-in technology. A new company was founded, V2 Plug-in-Hybrid Vehicle Partnership, as a result of this cross-border initiative.

The formation of the joint company with Vattenfall creates entirely new preconditions for developing next-generation green technology in a highly efficient way. Working in partnership is something that the company regards as an absolute necessity in the drive towards a sustainable future.