For the primary time, the Audi S5 Coupé/Sportback has a V6 diesel underneath the hood. The three.zero TDI engine within the S5 Coupé and the S5 Sportback produces 255 kW (347 hp) and delivers as much as 700 N·m (516.Three lb-ft) of torque between 2,500 and three,100 rpm. An electrical powered compressor gives for sturdy off-the-line efficiency; a 48V delicate hybrid system (MHEV) enhances effectivity.
Audi S5 Sportback TDI
The three.zero TDI within the S5 fashions is essentially the most highly effective model within the Audi V6 diesel engine lineup. Regardless of considerably higher efficiency, NEDC consumption derived from the WLTP values for the S5 Coupé TDI and the S5 Sportback TDI is simply 6.2 liters of diesel per 100 kilometers (37.9 mpg US), a CO2 equal of 161 grams per kilometer (259.1 g/mi).
The brand new S fashions devour on common 19% much less gas than their predecessors with gasoline engines regardless of producing considerably extra torque.
The six-cylinder diesel engine accelerates the S5 Coupé in four.eight seconds and the S5 Sportback in four.9 seconds from zero to 100 km/h. The electronically restricted prime pace is 250 km/h (155.Three mph). With these traits, the V6 diesel engine delivers agility, spontaneity, low gas consumption and lengthy vary. It additionally has a sporty sound and could be very .
Audi S5 Coupé TDI
The engine within the S TDI fashions options the electrical powered compressor (EPC) and delicate hybrid expertise (MHEV). Each methods are embedded in the usual 48-volt most important electrical system.
For the primary time within the S5 TDI, a robust 48–volt belt alternator starter is the guts of the delicate hybrid system with most recuperation energy of as much as eight kW. A DC/DC converter steps this voltage down for parts within the 12–volt electrical system.
A compact, air-cooled lithium-ion battery with a capability of zero.5 kWh put in underneath the bags compartment flooring serves because the vitality heart.
The EPC: quick assist for the turbocharger. The electrical-powered compressor within the Audi S5 TDI is new to this section. It's positioned in a bypass downstream of the intercooler and thus near the engine. From the skin, the compressor appears to be like just like a standard turbocharger. A compact electrical motor replaces the turbine wheel, nonetheless. With an output of as much as 7 kW, it accelerates the compressor wheel to 65,000 rpm in roughly 300 milliseconds.
It's activated each time the facility demand from the driving force is excessive however the vitality out there within the exhaust circulation for driving the compressor wheel is low. If that is so, the bypass valve closes and directs the consumption air to the EPC. The compressed air flows instantly into the combustion chamber. This allows the driving force to faucet the complete energy of the three.zero TDI immediately even at low engine speeds, whether or not passing one other automobile or accelerating out of a curve.
As a result of the expertise will increase torque on the decrease finish of the rpm vary, it gives for decrease engine speeds and fewer frequent downshifts throughout relaxed driving. From a standing begin, the brand new S fashions shortly transfer a number of meters forward of comparable automobiles with out an EPC.
MHEV expertise: recuperate or coast. The delicate hybrid system within the S fashions, which can also be built-in into the brand new 48-volt electrical system, has the potential to cut back buyer gas consumption by as a lot as zero.four liters per 100 kilometers.
Mounted on the top face of the three.zero TDI is a water-cooled belt alternator starter (BAS), which is related to the crankshaft through a very high-load poly-V belt. The BAS generates a recuperation energy of as much as eight kW and 60 N·m (44.Three lb-ft) of torque. It interacts intently with the TDI engine, which in lots of conditions will be operated extra intently to its superb load level consequently. That enhances effectivity.
When drivers take their foot off the accelerator pedal at a pace between 55 and 160 km/h (34.2 to 99.four mph), the automotive can coast for as much as 40 seconds with the engine shut off. The lithium-ion battery continues to produce electrical energy. The engine administration system decides anew in each scenario whether or not coasting, freewheeling or recuperation, i.e. the restoration of kinetic vitality, is best. It does this utilizing data from the navigation system and the onboard sensors. The vitality recovered by the BAS throughout coasting and braking flows into the 48-volt storage unit or on to shoppers.
The delicate hybrid system not solely reduces gas consumption; it additionally gives higher consolation and comfort. The standard starter is just used to begin the automotive initially, when chilly engine oil requires excessive forces. When the driving force presses the accelerator pedal once more after a coasting section or a cease, the BAS restarts the combustion engine. The system does this as required by the driving force’s needs and the scenario, from very easily to in a short time.
Begin-stop operation begins at 22 km/h (13.7 mph). When stopped, the engine restarts as quickly because the automotive in entrance begins to maneuver, even when the brake is depressed.
The engine: torquey and environment friendly. The three.zero TDI frequent rail system injects gas at a stress of as much as 2,500 bar. Crankshaft, pistons, connecting rods and oil administration have been designed for prime efficiency, and complex measures have been taken to cut back friction within the crankshaft and camshaft drive.
The thermal administration system options separate coolant loops for the crankcase and cylinder heads in order that the engine oil heats up shortly following a chilly begin. The coolant circulation is directed to the oil cooler, the EPC, the BAS and the compressor case of the turbocharger as wanted.
The big turbocharger generates as much as Three.four bar of absolute charging stress. Its variable turbine geometry (VTG) is optimized for low-loss circulation. The exterior low-pressure exhaust fuel recirculation (EGR) system extracts the exhaust fuel downstream of the particulate filter. This allows the turbocharger to be operated with the complete mass circulation, considerably growing its effectivity.
In lots of markets outdoors of Europe, Audi presents the S5 fashions with a special engine, the three.zero TFSI. The turbocharged gasoline direct injection engine, which isn't geared up with the EPC, has an output of 260 kW (354 hp) and produces 500 Nm (368.eight lb-ft) of torque from 1,370 to four,500 rpm. These fashions, too, include quattro all-wheel drive and the eight-speed tiptronic.
The eight-speed tiptronic. The three.zero TDI transmits its energy to a lightning-fast and smooth-shifting eight-speed tiptronic. Its decrease gears characteristic quick, sporty ratios, whereas the higher gears are lengthy to cut back revs and gas consumption. The motive force can let the torque converter automated transmission work by itself or actively management it, during which case the driving force’s instructions are transmitted electrically. The shift sequence and connection logic are optimized for the fast growth of traction. The transmission management system avoids pointless shifting in stop-and-go conditions.
New detailed options enhance the shut interaction between the tiptronic and the delicate hybrid system. A clutch within the central transmission interrupts the circulation of energy when the automotive is rolling and the engine is both idling or shut off. When coasting, an electrical oil pump unbiased of the combustion engine makes it potential to interact the gear required at restart.
Extra expertise modules contribute to effectivity. Slender springs on the multi-plate brakes within the gear units separate the plates from each other and thus scale back drag torque. The torsion damper within the tiptronic’s converter contains an rpm-adaptive damper that largely attenuates the vibrations of the V6 diesel that happen at very low engine speeds.
quattro everlasting all-wheel drive: self-locking heart differential. The quattro everlasting all-wheel drive system transfers the engine energy from the eight-speed tiptronic to the wheels. On the coronary heart of the drivetrain within the Audi S5 Coupé TDI and S5 Sportback TDI is a self-locking heart differential. It usually distributes the torque in a ratio of 40:60 between the entrance and rear axle. If a wheel loses traction, the differential ship the vast majority of the facility to the axle with the higher grip, with as a lot as 70% going to the entrance or as much as 85% to the rear.
Throughout sporty driving, wheel-selective torque management—a software program operate of the ESC Digital Stabilization Management— perfects the dealing with. It brakes the 2 wheels with lowered load on the within of a bend barely earlier than they'll start to spin. The distinction between propulsive forces on the wheels makes the automotive flip into the curve ever so barely, making dealing with much more exact, agile and secure.
quattro with sport differential. The non-obligatory sport differential additional optimizes dealing with. Throughout dynamic cornering, the game differential actually pushes the automotive into the curve and eliminates any trace of understeer. When turning into or accelerating in a curve, many of the torque is distributed to the skin rear wheel.
Throughout sporty cornering, the game differential ensures that steering instructions are carried out exactly and stably, offering for excellent agility. Integration into the Audi drive choose dynamic dealing with system additionally permits the driving force to decide on between totally different sport differential setups.
Sport suspension: optionally with or with out fast-acting damper management.
The subtle suspension contributes to the dynamics of the S fashions. The entrance and rear axles are five-link constructions made largely of aluminum. Two subframes join the hyperlinks to the physique. The monitor width is 1,587 millimeters (62.5 in) on the entrance and 1,568 millimeters (61.7 in) on the rear. The Coupé has a wheelbase of two,765 millimeters (9.1 ft); the Sportback 2,825 millimeters (9.Three ft).
With a ratio of 15.9:1, steering is direct and options an S-specific energy help system. It filters out intrusive street inputs whereas passing helpful data to the steering wheel. Audi additionally presents dynamic steering as on possibility. It makes use of a superposition gear to range its ratio by as much as 100 % as a operate of the automotive’s pace and the mode chosen within the Audi drive choose dynamic dealing with system. On the cornering restrict, dynamic steering stabilizes the automotive with lightning-fast steering inputs.
Audi presents the non-obligatory suspension with damper management, during which electromagnetic valves regulate the circulation of oil in an energy-efficient method: Larger energy is just supplied if the valves are closed to agency up the dampers. There may be a variety between a delicate experience and agency dealing with.
The digital chassis platform (ECP) controls the dampers in millisecond cycles. The high-tech management unit collects complete details about the motion of the automotive and the information from the chassis management methods concerned. From these, it shortly calculates and exactly coordinates the optimum operate of those parts. In addition to the managed dampers, the ECP additionally controls the non-obligatory sport differential. The latter and the dynamic steering are built-in into the Audi drive choose dynamic handing system, which additionally impacts the throttle valve, tiptronic, energy steering and different expertise modules. The motive force can regulate their operate by switching between the profiles consolation, auto, dynamic, effectivity and particular person (solely with MMI navigation system).
Controls and infotainment. The MMI system on board the S5 fashions presents a extremely fashionable management logic. With its flat hierarchies, it's oriented on fashionable smartphones, together with the clever free-text search operate. The voice management operate acknowledges inputs from on a regular basis speech. The non-obligatory Audi digital cockpit (out there at the side of MMI navigation plus) presents all key data on its 12.Three-inch show. One of many three views from which the driving force can select is the S mode, during which the tachometer takes heart stage. The non-obligatory head-up show initiatives necessary information onto the windshield as symbols and digits.
The infotainment system for the S fashions is modular, with MMI navigation plus with MMI contact and an eight.Three-inch monitor topping the infotainment vary. The rotary pushbutton has a touchpad for zooming, scrolling and coming into characters. The system contains the Audi join module, which connects the automotive to the web through LTE and in addition features a Wi-Fi hotspot. It additionally delivers the quite a few Audi join web providers to the automotive, starting from visitors data on-line to distant capabilities. The free myAudi app connects a smartphone with the automotive.
The non-obligatory Audi cellphone field connects smartphones to the on-board antenna by near-field coupling and prices them inductively utilizing the Qi customary. Notably discerning hi-fi followers can select the Bang & Olufsen Sound System with 3D sound. The Audi smartphone interface brings Apple CarPlay and Android Auto on board for iOS and Android telephones, respectively.
Driver help methods. The S5 Coupé TDI and S5 Sportback TDI make driving much more relaxed and comfy with a variety of driver help methods. A number of the options are customary options. The non-obligatory methods will be ordered both individually or within the “Parking,” “Metropolis” and “Tour” packages. Highlights embrace adaptive cruise management together with visitors jam help, collision avoidance help, flip help and rear cross visitors help.
The Audi S5 fashions with TDI engines might be out there on the European market from Might 2019. The beginning worth in Germany for the S5 Coupé TDI and S5 Sportback TDI is €65,300 (US$73,760). This contains common choices from the Audi A5 value round €7,000 as customary tools. These embrace LED headlights with dynamic flip indicators, S sport suspension with tautly tuned suspension and damping, 18-inch wheels, power-adjustable entrance sport seats with Alcantara leather-based, embossed S emblem and seat heating, and sportily contoured bumpers.