Engine – Overview

Design and Function

Applies to: 2005–2011; B8444S

The engine is an 8 cylinder V-engine with 60 degrees angle between the two cylinder banks. A specially adapted exhaust system together with the offset crankshaft pins gives the characteristic V8 sound. The engine is transverse and is only available in combination with AWD.

The engine is mounted vertically on the subframe.

Displacement is 4.4 dm³. Each cylinder has four valves.

The engine has a variable intake system which gives high torque at low engine speeds (rpm) and high performance at high engine speeds (rpm).

The ignition system has directly installed ignition coils.

The engine has mechanical valve lifters and electronic throttle. The throttle body is heated by coolant which means that pre-heating of intake air is not required.

The engine has double pairs of overhead camshafts, driven by three maintenance-free chains.

The engine has a counter rotating balancer shaft which gives vibration free running.

The cylinder block is made of a light metal alloy.

The direction of cooling system flow allows the coolant to first cool the cylinder heads and then the engine block.

All auxiliary units, the alternator, servo pump and A/C compressor are directly mounted on the engine block.

95 RON fuel can be used for normal operation. 98 RON is recommend for maximum performance and lowest possible fuel consumption. When driving in climates hotter than +38 ºC, fuel with the highest possible octane rating is recommended to ensure the best possible performance and fuel consumption.

The engine is regulated by the Engine Control Module (ECM). For information on sensors and the control module, see Design and Function, Engine Control Module (ECM).

Applies to: 2006–2014; D5244T18, D5244T4, D5244T5

The engine has been developed by Volvo.

The engine is a transverse five cylinder direct injection turbocharged diesel engine. The engine has double overhead camshafts and 20 valves.

The engine is manufactured in several versions with different outputs/torque levels. These are described in the engine's mechanical specifications, see INFORMATION/PRODUCT SPECIFICATIONS/Specifications, mechanical.

The engine has a Bosch common rail injection system, where the diesel pump is powered directly by the intake camshaft. Injection occurs via the injectors using solenoids. The fuel dosage is electronically regulated to give reliable starts and restarts.

The engine has coolant cooled Exhaust Gas Recirculation (EGR). The engine has a stepless variable swirl system located on the cylinder head.

The engine has a turbocharger (TC) with variable turbine geometry (Variable Nozzle Turbine, VNT) and charge air cooling. To prevent icing, the crankcase ventilation gases must be heated.

Applies to S60, V70 (00-08), V70XC (-07), XC90

A water heated twin wall pipe, encased by coolant, produces a more even temperature and safer function.

Applies to other models

The crankcase ventilation is electrically heated to produce a more even temperature and safer function.

The engine is equipped with a catalytic converter. It is located immediately after the turbocharger. This means that the catalytic converter quickly reaches the correct operating temperature after start.

After the catalytic converter there is a particle filter. This operates using the through flow principle. The system uses heated oxygen sensors and temperature and differential pressure sensors for control and monitoring.

Diagnostics are carried out via the data link connector (DLC).

Applies to: 2007–2010; B6324S

The engine has been developed by Volvo.

It is a 6 cylinder transverse in-line engine with a cylinder capacity of 3.2 L for naturally aspirated engines and 3.0 L for turbocharged engines.

The engine is extremely compact. When it was introduced it was the shortest 6-cylinder engine of 3.2 L on the market. Conventional straight 6-cylinder engines are too long to fit between the collision members in the engine compartment. The special design of this engine solves the problem.

The engine has an extremely short drive train, its length is only 625 mm from the front edge of the engine block to the rear edge of the carrier plate.

Great attention has been paid to creating a very rigid engine. Middle part, cylinder block and cylinder head have been structurally optimized to combine low weight with high rigidity.

Even the camshaft cover is structurally optimized.

The engine has double overhead camshafts and 24 valves.

Camshafts, servo pump, AC-compressor, coolant pump and alternator are driven by an auxiliary unit drive, mounted on the back of the engine.

This placement of the auxiliary unit drive gives completely new possibilities of creating a good collision-protective structure around the straight 6-cylinder drive unit.

The entire engine block and the cylinder head is made from aluminum.

The engine has a compact "pent-roof" designed combustion chamber and V-arranged valves. This gives optimal and fast filling and direct flushing via the inlet manifold followed by the combustion chamber (cross-flow) and the exhaust channel.

The squish surfaces together with the centrally positioned spark plug provide optimal combustion of the air/fuel mixture, low knock sensitivity and low, stable exhaust emissions.

The engine's firing order is 1 - 5 - 3 - 6 - 2 - 4. The firings occur every 120 degrees that the crankshaft rotates.

For information on the engine control module (ECM), sensors, and valves, see Design and Function, Engine Control Module (ECM).

Applies to: 2011–2013, 2013–2014; B6324S5

The engine has been developed by Volvo.

It is a 6 cylinder transverse in-line engine with a cylinder capacity of 3.2 L for naturally aspirated engines and 3.0 L for turbocharged engines.

After having been relatively unchanged since the introduction 0620, this engine family has been updated on several points. Most modifications have their basis in an effort to achieve lower fuel consumption and thus less environmental impact.

Engine power has increased, at the same time as fuel consumption has decreased.

• B6304T4: (ULEV2 Ultra Low Emission Vehicle): 300(US)/ 304 hp / 440 Nm
• B6324S4 (PZEV - Partial Zero Emission Vehicle): 230(US) 233 hp (torque unchanged 300 Nm)
• B6324S5 (ULEV - Ultra Low Emission Vehicle): 240(US) /243 hp (torque unchanged 320 Nm)

All of these engines meet the emission standards for Euro5.

The engines' idle speed is reduced to 590 rpm on all cars except XC90 which keeps 650 rpm.

The engine is extremely compact. When it was introduced it was the shortest 6-cylinder engine of 3.2 L on the market. Conventional straight 6-cylinder engines are too long to fit between the collision members in the engine compartment. The special design of this engine solves the problem.

The engine has an extremely short drive train, its length is only 625 mm from the front edge of the engine block to the rear edge of the carrier plate.

Great attention has been paid to creating a very rigid engine. Middle part, cylinder block and cylinder head have been structurally optimized to combine low weight with high rigidity.

Even the camshaft cover is structurally optimized.

The engine has double overhead camshafts and 24 valves.

Camshafts, AC-compressor, coolant pump and alternator are driven by an auxiliary unit drive, mounted on the back of the engine.

This placement of the auxiliary unit drive enables new possibilities for creating a good collision-protecting structure around the straight 6-cylinder drive unit. In the latest update of the engine family the servo pump has been replaced by an electrically driven pump (EHPAS), for more information, see Design and function.

The entire engine block and the cylinder head is made from aluminum.

The engine has a compact "pent-roof" designed combustion chamber and V-arranged valves. This gives optimal and fast filling and direct flushing via the inlet manifold followed by the combustion chamber (cross-flow) and the exhaust channel.

The squish surfaces together with the centrally positioned spark plug provide optimal combustion of the air/fuel mixture, low knock sensitivity and low, stable exhaust emissions.

The engine's firing order is 1 - 5 - 3 - 6 - 2 - 4. The firings occur every 120 degrees that the crankshaft rotates.

For information on the engine control module (ECM), sensors, and valves, see Design and Function, Engine Control Module (ECM).