Volvo has two new turbo-diesel engines ready for 2010, the first is an all new twin turbo D5 while the other is a new fuel efficient four cylinder 2.0D.
Using the latest diesel technology on offer, giving the best performance with low fuel consumption and low emissions, the twin turbo D5 is an all new unit sharing nothing in common with the previous D5 engine.
The engines are available in the XC60, XC70 and S80 and drive through a six speed adaptive Geartronic transmission to a Haldex All Wheel Drive system. The fuel consumption can be as low as 6.2L per 100km in smaller models.
The C30, S40 and V50 all get the new 2.0D engine with heaps of torque the smooth running unit can have a fuel consumption as low as 5.9L/100km. Also on offer is the dual clutch six speed Powershift gearbox.
All-new D5 diesel upgrades power, economy while reducing emissions.
The new twin turbo D5 engine produces 151kW of power and a strong 420Nm of torque, improving zero to 100km/h times by nearly one full second – as well as reducing fuel consumption by as much as 1.2L/100km.
As an added bonus the D5 engine is rated to Euro 5 emission standards, the S80 emits 199g/km of CO2.
The all alloy engine has a long stroke twin overhead camshaft with four valves per cylinder and a compression ratio of 16.5:1.
The twin turbos provide high boost pressure up to 1.8 bar over a wide range of rpm improving acceleration time at all speeds. The engine has piezoelectric direct injection with high pressure fuel pump producing 1800 bar which controls the combustion process.
A post injection system injects a small amount of fuel into the combustion chamber after the main charge to help with the removal of particles in the exhaust.
The D5 engine doesn’t have a dipstick, instead it has this information displayed on the instrument panel. Not only does it let you know the oil is low, it also lets you know how much oil is required.
New Powershift transmission in C30, S40 and V50 ups efficiency, lowers fuel consumption by 8 per cent
Using second generation 1600 bar high pressure common rail fuel injection the twin overhead camshaft four valves per cylinder 2.0D turbo diesel has a compression ratio of 18.5:1. The engine produces 100kW at 4000rpm and has 320Nm of torque at 2000rpm.
Volvo developed the gearbox with Getrag, it operates like two manual transmissions with twin wet clutches working independently on different gear sets. One clutch controls first, third and fifth and the other controls second, fourth and sixth.
by Adam Marshall