Home » News » Volvo » Volvo 1.6-litre T3 and T4 petrol engines with 150 HP and 180 HP

Volvo is introducing the company's new 1.6-litre T3 and T4 petrol engines which feature the latest direct injection technology, offering 150 HP and 180 HP respectively and which feature improved fuel consumption figures.

The new 1.6-litre GTDi 4-cylinder T3 petrol unit that packs 150 HP (110 kW) and 240 Nm of torque as well as the new 1.6 GTDi T4 producing 180 HP (132 kW) and 240 Nm of torque (270 Nm with overboost) will be offered on the new Volvo S60 and V60 models.

Both the new T3 and T4 engines will use Volvo's 6-speed manual gearbox with the automatic 6-speed Powershift transmission also available on the T4.

Fuel consumption figures for the new Volvo 1.6-litre petrol engines were not specified, but the automaker did specify that their T3 and T4 units will be launched in autumn 2010 with a E85 capable version also in the works.

 

Volvo press release :

Volvo's engine range is now being expanded with the T3 and T4, two four-cylinder 1.6-litre petrol engines featuring the very latest direct injection technology.

TheGTDi (Gasoline Turbocharged Direct Injection) concept was developed to offer really low fuel consumption without compromising on performance ordriving pleasure.

The 1.6 GTDi T3 with 150 horsepower (110 kW) and the T4 with 180 horsepower (132 kW) will be available in the all-new Volvo S60 and V60. The 180 hp engine delivers maximum torque of 240 Newton metres from just 1600 and all the way up to 5000 revs a minute. An on-demand overboost function provides amassive 270 Newton metres of torque. The result is excellent pulling power across the entire speed range. The torque curve is relatively gentle, providing a particularly comfortable driving experience. The 150hp version offers 240 Newton metres of torque.

"Small,high-performance GTDi engines are a part of our bid to get more energy out of smaller engines," says Magnus Jonsson, Senior Vice President Product Development at Volvo Cars.

Compact aluminium engines with low weight and high energy efficiency

Thenew GTDi engines have a compact format and are made entirely from die-cast aluminium, which gives low weight and good heat-dissipation capability. These are some of the requirements for good energy efficiency. The plastic inlet manifold also helps minimise weight.

Anotherprecondition is maximum combustion of the fuel. In order to minimise petrol consumption and emissions, the fuel must be utilised as efficiently as possible. The fuel injection system, not least, has been refined so that combustion can be regulated with extreme precision.

Direct injection with spray-dosage multi-hole injectors

Forits 1.6-litre engines, Volvo has chosen to position each injector centrally above the piston, just beside the spark plug. The injectors have six holes each, somewhat unusual for centrally positioned injectors. This gives particularly uniform and finely atomised fuel distribution.

The centrally located multi-hole injector makes it possible to control fuel dosage extremely precisely. In cold starts, the fuel is sprayed into the middle of the combustion chamber just prior to ignition. The high fuel injection pressure of 100 bar means that preparation is perfect and less fuel ends up on the cold combustion chamber walls. This helps cut emissions and considerably reduces the amount of fuel consumed. Another effect is a major reductionin the amount of soot particulates compared with a side-positioned injector.

In cold starts, this injection technology also contributes to quick heating of the catalytic converter, which in turn hastens the exhaust cleaning process.

Direct injection gives a high fill rate in the combustion chamber. Apart from effective combustion and low emissions, this also helps the turbo start up earlier and provides swift response even from low engine revs. This in turn promotes fast acceleration and good driveability from low speeds.

"This is the most modern injection technology in existence and Volvo played a major role in its development," says Magnus Jonsson. "Our cooperation with Bosch, which manufactures the system, has been ongoing for a number of years and is highly successful."

Turbo and twin VVT (Variable Valve Timing)

Directinjection in combination with turbocharging and variable valve timing has made it possible to deliver performance properties on a par with farlarger engines, while at the same time reducing fuel consumption and environmental impact to considerably lower levels.

"Weestimate reductions in fuel consumption and exhaust emissions in the region of twenty percent compared with a conventional petrol engine withlarger displacement and similar performance," says Magnus Jonsson. "At the same time, the GTDi engines provide the sort of lugging power and driving feel of a modern diesel engine."

The GTDi engines utilise variable valve timing for both camshafts. Both the inletand exhaust valves' opening times can be varied to optimise overlap andensure exactly the right fill in the combustion chamber, irrespective of engine revs. This optimises combustion throughout the rev range and contributes to swift acceleration in all operating conditions.

In combination with Powershift or manual gearbox

The1.6 GTDi  T4 will be available in combination with Volvo's automatic six-speed Powershift transmission or a six-speed manual gearbox.
The 1.6 GTDi  T3 will only by available with a six-speed manual gearbox.

Both variants feature a DRIVe-button on the instrumentation that engages and disengages fuel-saving technology:

  • Theautomatic version had a technology that disengages the gear if the driver releases the accelerator when the car is rolling. This creates less rolling resistance and improves fuel consumption.
  • Themanual version comes with a Start/Stop function that shuts off the engine when the car is standing still and the driver releases the clutchand puts the gear lever into neutral. As soon as the driver presses theclutch again the engine restarts.

The six-speedtwin-clutch Powershift transmission unites the manual gearbox's efficiency and driving dynamics with the automatic transmission's smoothness and convenience. Clutch operation is coordinated so that no torque losses arise during gearchanges. The result is the same comfort and seamless drive as a conventional automatic transmission, combined with the performance of a manual gearbox.

Launch in autumn 2010

The1.6 GTDi T3 and T4 is launched in autumn 2010 together with the new Volvo S60 and V60. The GTDi engines will later also become available in an E85 (ethanol) version.

 

Engine specifications 1.6 GTDi T3:

Engine type

4-cylinder petrol turbo

Displacement

1595 cm3

Bore

79.0 mm

Stroke

81.4 mm

Compression ratio

10.0:1

Valves per cylinder

4

Camshafts

DOHC

Max power output

110 kW (150 hp)

Max torque

240 Nm

Emissions

Euro 5

 

Engine specifications 1.6 GTDi T4:

Engine type

4-cylinder petrol turbo

Displacement

1595 cm3

Bore

79.0 mm

Stroke

81.4 mm

Compression ratio

10.0:1

Valves per cylinder

4

Camshafts

DOHC

Max power output

132 kW (180 hp) / 5500 rpm

Max torque

240 Nm / 1600-5000 rpm, 270 Nm for brief overboost

Emissions

Euro 5

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