Cars Audi's S-Series combines superior power and sensitivity control while remaining at the same time practical. This is achieved without forcing the engine. Indicators of a new 2.7-liter V-type 6-cylinder engine with Audi's two small turbochargers, which are seamlessly incorporated, if necessary, are able to make an impression. The power unit with 5 valves per cylinder, produces a maximum 265 hp (195 kW) at 5800 rev / min. The torque curve is almost flat. 400 Nm of torque available in a range 1850 - 3600 / min. Use 2 small blowers, one for each cylinder bank, instead of one big, Audi V6 engine has its advantages. More rapid response of small turbine can get more torque at low revs. Short distance between the outlet of the cylinder and the intake of a turbocharger, lead to a more efficient filling and emptying of the cylinders. Each cylinder bank has an intercooler, which lowers the air temperature. Efficient cooling - a necessary requirement for forcing the engine Audi: the lower the temperature, the higher the density, the more air will fit into the combustion chamber. The form of the intake manifold is made such that the incoming air to spin. This allows for more efficient cleaning of the combustion chamber. Tightening fuel mixture to optimize combustion. The intake camshaft in two five-cylinder heads - hydraulically adjustable to optimize the torque curve. Setting the time of opening of valves increases torque by 10% at low and medium engine speeds the Audi. Indicators S4 and S4 Avant are impressive: the sedan accelerates from 0 to 100 km / h in 5.7 seconds, and to be precise, wagon behind him by only 0.1 seconds. In both cases, the speed is limited to 250 km / h. Audi engine efficiency refers to the total fuel consumption: 11.3 and 11.4 litres/100 km. Control of exhaust temperature, applied for the first time, leads to the optimal use of fuel and low in contaminants in the exhaust. Equipped with modern control system with Audi Audi drive, fit into the stringent requirements of the standard D3. Engine power is transmitted securely Audi 6-speed gearbox with sporty ratios and four-wheel drive. Aluminum suspension Audi S4 is available in 1999, has a noticeable effect in the control. The brake system in the Audi was also changed: the large ventilated front discs and rear with aluminum calipers provide sure stops. Anti-lock braking system with Audi and Audi have electronic brake-force distribution system, under the control of electronic stabilization program. This makes both sedan and wagon, one of the safest cars Audi. The difference in appearance between the S4 and A4 is the base model in some differences in design. Sporty looks give the tire size of 225 by 17-inch Avus drives. Large air intakes do look more Audi cars swift. Xenon headlights and a transparent glass headlights contribute to the shape of the car Audi. The machine is equipped with Audi's automatic system for the Audi tilt of the light beam and headlight washer system. S4 saloon remained faithful to the style S-models. High-quality upholstery Jacquard Satin Onyx, or shell grey - the basic version. You can choose between a carbon or aluminum trim panel and door sills. For fans of the style extra luxury, there is a choice between leather silk nappa, shell grey or silver or a mixture of blue Alcantara and colored onyx. In conclusion, it remains to add that the model change affected the A4 and S4. Changed side moldings, rear lights, interior lighting. Changed the location of light illumination in order to make room for the side airbags included as standard. New item in the list of optional equipment are aluminum Audi exterior mirror housings, family S8, which adds a new touch to the already sporty silhouette so S4. vag.ru
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