![]() ![]() The injection system has been fitted with new injectors with seven finer nozzle openings as opposed to five in the previous engine. ”By doing so, we have gained two things: higher performance and lower emissions.” “We have also made the combustion chambers larger, thereby lowering compression,” says Jörgen Svensson. The use of a new electronically controlled multi-throttle system in the inlet ports allows for infinitely variable regulation of the swirl level, and combustion can be adjusted extremely accurately according to the driving situation and the current engine speed and load. This is particularly beneficial during short stops after high-speed driving, such as when refuelling on the highway.Īs was previously the case, air swirls in the cylinders’ combustion chambers. This is caused by the higher performance of the new engine and provides continued cooling of the turbo after the engine has been switched off. The turbo centre housing is now water-cooled, which is unusual in diesel engines. The improvements contribute to both faster acceleration and better high-speed performance. Furthermore, the variable vanes have been cambered for a more efficient flow of gas at all settings, resulting in an increased level of turbo efficiency. A larger compressor wheel provides higher torque and output. The new-generation turbocharger has electronic control, resulting in fast and precise control of the charge pressure. Most of the air and exhaust channels have been given increased volume and more gentle bends for more efficient gas-flow with low losses. Most of the increase in performance can be attributed to an upgraded air and exhaust gas exchange system, a new turbocharger, and an improved injection system. “The driver will perceive it as a lively petrol engine, only more powerful and more environmentally efficient.” “We have improved nearly everything in the engine,” says Jörgen Svensson, Chief Programme Engineer. This provides extra power and considerably quicker response at both high and low rpm. Torque has also increased dramatically, from 340 to 400 Nm. The increase provides excellent high-speed performance, with fast acceleration and efficient pulling power, even when driving up long, steep hills, with no need to change down. The most powerful version, the D5, has been given an extra 22 horsepower and has a maximum output of 185 hp (136 kW). This new diesel engine is actually three different ones, all of which are turbocharged. At the same time, there has been a sharp reduction in emissions. The improvements have resulted in an entirely new driving experience with considerably higher performance, and improved drivability. ![]() The engine, which was introduced in 2001, has been extensively improved and refined. The Volvo Car Corporation is unveiling a new generation of our own five-cylinder diesel engines for the Volvo S60, V70, XC70, and XC90. All Wheel Drive with Instant Traction for all larger Volvo models.Larger, electronically controlled turbo. ![]()
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