2020 Audi S4 TDI [4K]

2020 Audi S4 TDI [4K] 👉 Facebook :   / 8kcartv   👉 Instagram :   / 8kcartv   👉 Twitter :   / 8kcartv   👉 VKontakte : https://vk.com/8kcartv 👉 Youtube : https://www.youtube.com/c/8KCarTV?sub... 👉 Don’t miss the next videos: press the little bell ((🔔)) to get notifications Audi S4 TDI For the first time, both S models in the A4 family are using a V6 diesel engine - the Audi S4 Sedan TDI and the S4 Avant TDI. The 3.0 TDI produces 255 kW (347 metric hp) of power and up to 700 Nm (516.3 lb-ft) of torque. A mild hybrid system based on a new 48-volt main on-board electrical system increases efficiency, while the electric powered compressor (EPC) ensures powerful drive-off performance. This combination of power, torque, efficiency and spontaneity is unique in the segment. The 3.0 TDI: brawny torque The 3.0 TDI, the most powerful configuration level in Audi's V6 diesel series, combines brawny performance with high efficiency. Its output is 255 kW (347 metric hp), and 700 Nm (516.3 lb-ft) of torque is available between 2,500 and 3,100 rpm. The V6 diesel accelerates the Audi S4 Sedan TDI from stationary to 100 km/h (62.1 mph) in 4.8 seconds; in the Audi S4 Avant TDI it is 4.9 seconds. Top speed is electronically governed at 250 km/h (155.3 mph). The drive of the S TDI models integrates the EPC and mild hybrid technology (MHEV). Both systems are embedded in the standard 48-volt main on-board electrical system. For the first time, a powerful 48-volt belt alternator starter is the heart of the mild hybrid system in the S4 TDI, with maximum recuperation power during braking of up to 8 kW. A DC/DC converter transforms this voltage for the components in the 12-volt network. An additional compact air-cooled lithium-ion battery with a capacity of 0.5 kWh installed under the luggage compartment floor serves as the energy center. The EPC: fast support for the turbocharger The electric powered compressor is installed in a bypass downstream of the intercooler close to the engine. If the power demand from the driver is high but the energy available in the exhaust flow is low, the bypass valve closes and directs the intake air into the EPC, which performs the second stage of compression. With an output of up to 7 kW, a compact electric motor accelerates its compressor wheel to 65,000 rpm in approximately 300 milliseconds. Thanks to the support of the EPC, the power of the 3.0 TDI is available immediately whenever the driver wants it. The EPC preempts any hint of turbolag, thus enabling instant responsiveness in all driving situations, whether overtaking or accelerating out of a curve. During relaxed driving, the technology ensures strong torque at the lower end of the rpm range, meaning fewer downshifts are required. From a standing start, both S models quickly move several meters ahead of comparable vehicles without an EPC. MHEV technology: recuperate or coast The mild hybrid system in the S models has the potential to reduce customer fuel consumption by as much as 0.4 liters per 100 kilometers. There is a water-cooled 48-volt belt alternator starter (BAS) at the front end of the 3.0 TDI, which is connected to the crankshaft via a particularly resilient poly-V-belt. The BAS recovers up to 8 kW of power during braking. It works together closely with the TDI, which can therefore be operated closer to its ideal load point in many situations. This improves efficiency. When drivers take their foot off the accelerator pedal at a speed between 55 and 160 km/h (34.2 to 99.4 mph), the car can coast for up to 40 seconds with the engine shut off completely. The lithium-ion battery continues to supply electricity. The drive management decides in each individual situation whether coasting, freewheeling, or recuperating is more efficient. To do so, it uses the information from the navigation and the on-board sensors. The energy supplied to the BAS flows into the 48-volt storage battery or directly to the electrical consumers. The mild hybrid system not only reduces fuel consumption; it also provides greater comfort and convenience. The conventional starter is only used to start the car initially, when cold engine oil requires high forces. When the driver presses the accelerator pedal again after a coasting phase or a stop, the BAS restarts the TDI as required by the driver's wishes and the situation, from very smoothly to very quickly. Start-stop operation begins at a speed of 22 km/h (13.7 mph). When stopped, the engine restarts as soon as the car in front starts to move, even if the brake is depressed.