New Engines: V8 And 3.2 Six-Cylinder
Following a high level of customer and media interest when Volvo announced its new V8 engine was available for the XC90 in other countries (with LHD), Volvo is delighted to confirm that the V8 will now be one of the new, premium range of engines available in the new Volvo XC90 in the UK (with RHD) together with Volvo’s new 3.2-litre straight-six engine recently launched in the all-new Volvo S80 saloon.
"With the new state-of-the-art six and eight-cylinder engines, the new Volvo XC90 will appeal to a far broader segment of customers and meet the increased demand for more performance and refinement," says Hans Wikman, Vice President Vehicle Line Large Cars, at Volvo Car Corporation.
The new V8 and in-line 3.2-litre six-cylinder engines offer 315PS with 440Nm of torque and 238PS with 320Nm of torque, respectively. The engine line-up for the new XC90 is completed with Volvo’s popular, five-cylinder D5 (185PS) turbodiesel that will continue to be available. The previous six-cylinder T6 (272PS) and five-cylinder 2.5T (210PS) engines are discontinued.
V8: 315PS and 440Nm of torque
This is Volvo’s first V8 engine. It is extremely refined with compact dimensions to enable it to be fitted transversely in the XC90 - like all Volvos - to help maintain good front crumple zones and leave more space for the passenger compartment.
Its compact design was achieved by positioning the cylinders at 60 degrees with a counter-rotating balancer shaft, rather than the conventional 90 degrees. In addition, all the ancillaries, such as the alternator, are fitted directly onto the engine itself without any space-stealing brackets. The starter motor is fitted above the transmission to save space, similarly, the exhaust camshafts are driven by secondary chains running off the inlet camshafts. The result is a V8 engine that is just 754mm long and 635mm wide which weighs just 190kg thanks to the block and cylinder head being cast in aluminium.
It is also one of the cleanest V8 engines on the market and meets the American ULEV II (Ultra Low Emission Vehicle, stage II) standard, which has been possible with the help of:
- Four catalytic converters. Two of these are of close coupled catalyst type and fitted to one exhaust manifold each. The other two are installed under the car floor.
- Lean air/fuel mixture for lower emissions at cold start.
- Higher idling speed at cold start (about 1,250rpm), and optimised ignition for faster warming of the engine and catalytic converters.
The result is extremely low emissions before the catalytic converters are activated – which takes place just 15-20 seconds after the engine is started.
"It is during these 15-20 seconds that the majority of the emissions of harmful substances take place," says Jögen Sbensson, Volvo’s chief programme engineer.
No less than 370Nm of the torque is at the driver’s disposal from 2,000 rpm, with the total of 440Nm available at 3,900 rpm. This provides acceleration from 0-62mph in about seven seconds.
The sound of a V8 engine is also important to customers and is something Volvo has paid special attention to during the development of the engine. The resulting off-beat V8 ‘burble’ speaks for itself.