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S90 engine is UEFA TVdriven by Volvo Motor Company for its S90 sedan.The power system has a series of technical features, which can bring drivers an excellent driving experience and efficient fuel economy. This article will introduce the technical characteristics and advantages of the S90 engine in detail. I. Overview The S90 engine adopts advanced power technology, including 2.0-liter 4-cylinder turbocharged engine and 2.0-liter 4-cylinder turbocharged pressurized injection engine, etc. These engines all adopt efficient combustion technology and advanced power control systems, which can provide excellent power response and fuel economy in different driving situations. II. Technical characteristics of the engine 1. Twin-turbocharging technology The S90 engine adopts twin-turbocharging technology, and each turbocharger is responsible for two cylinders, thus improving the output power and torque of the engine. In addition, twin-turbocharging technology can also improve the fuel economy of the engine and reduce pollution emissions.Two. Direct injection technology The S90 engine adopts direct injection technology, which can inject fuel directly into the cylinder, thus improving the utilization rate of fuel. In addition, direct injection technology can also improve the combustion efficiency of the engine and reduce stress and emissions. 3. Transmission technology The S90 engine adopts advanced transmission technology, including 8-speed automatic transmission, which can intelligently change the speed according to the driving situation to ensure the comfort and safety of driving. Four. Turbocharged cooling technology The S90 engine adopts turbocharged cooling technology to improve engine power and fuel economy by cooling the turbocharger. This technology can reduce the heat effect of the turbocharger and extend its life. 5. Variable valve technology The S90 engine also adopts variable valve technology, which can intelligently adjust the opening time and angle of the valve according to different driving conditions and needs to improve the efficiency and fuel economy of the engine.III. Advantages 1. The highly efficient fuel-efficient S90 engine adopts a series of efficient power technologies, which can significantly improve the utilization rate and economy of fuel and reduce the cost of use. Two. Excellent power response S90 engine can provide excellent power response and torque output in different driving situations, so as to meet the different needs of drivers. 3. The low-emission and environmentally friendly S90 engine adopts direct injection technology and advanced emission control system, which can significantly reduce the emission of nitrogen oxides, carbon dioxide and other harmful substances, which is of positive significance to environmental protection. IV. Conclusion The S90 engine is a power system of Volvo Cars with leading technical characteristics, with efficient fuel economy, excellent power response and low emission characteristics. It can be said that the many advantages of the S90 engine give the S90 sedan excellent driving experience and safety.

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