Volvo Cars has chosen a four-cylinder 1.6-litre petrol unit using high-efficiency GTDi (Gasoline Turbocharged Direct Injection) technology, producing 180 horsepower for the Volvo S60 Concept. This engine in combination with a range of other technical measures makes it possible to cut carbon dioxide emissions to 119 g/km.
In a conventional petrol engine, fuel is injected into the inlet manifold ahead of the inlet valves. However, with direct injection the fuel is injected directly into the combustion chamber under high pressure. This technology promotes better gas flow with optimised air/fuel mixture and greater resistance to uncontrolled combustion. The result is higher power and lower fuel consumption. GTDi technology combined with turbocharging makes it possible to reduce engine displacement while maintaining performance, but with about 20 percent lower fuel consumption and CO2 emissions.
"GTDi technology is an important CO2-cutting technology for petrol engines. In the S60 Concept we have also added a number of other developments that further reduce fuel consumption. Several of these features will make their way into our production models in the coming years," says Derek Crabb, Vice President Powertrain at Volvo Cars.
Volvo Cars' first production car with GTDi technology will be introduced during the second half of 2009.
Electric power steering, stratified combustion and other measures
In addition to GTDi technology, the Volvo S60 Concept integrates the following technical features to bring CO2 emissions down to 119 g/km:
"Several of these solutions can deliver significant CO2 reductions in the future since they can be used throughout large sections of the model range. When it comes to "DRIVe-Mode", for instance, the driver can actively cut fuel consumption by reducing the function of certain comfort systems. The idea is that every owner can individually choose which systems he or she wants to limit," says Magnus Jonsson, Senior Vice President, Research & Development at Volvo Cars.
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