Engine – Overview

Design and Function

Applies to: 2006–2007; D5244T4

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).