Specifications
| Engine designation | AJK/AZA | ARE/BES |
| Working volume, cm³ | 2671 | 2671 |
| Power, kW at rpm | 169/5800 | 184/5800 |
| Power, hp at rpm | 230/5800 | 250/5800 |
| Maximum torque, Nm / rpm | 310/1700 | 350/1800 |
| Cylinder diameter, mm | 81,0 | 81,0 |
| Piston stroke, mm | 86,4 | 86,4 |
| Compression ratio | 9,3 | 9,5 |
The Audi Allroad cars use 6-cylinder petrol engines with two blocks of three cylinders each as a power plant. The cylinder blocks are located at an angle of 90° relative to each other, so such engines are designated V6. The cylinder block is made of gray cast iron, and the cylinder head is made of a light metal alloy. The cylinder head is made according to the so-called transverse principle, when the inlet and outlet channels are located diametrically opposite, across the longitudinal axis of the engine. The air-fuel mixture enters from one side of the cylinder head, and the exhaust gases exit on the opposite side, ensuring rapid gas exchange.
Each cylinder of the engine in question has three intake and two exhaust valves. Each cylinder block has two camshafts, which are connected by a drive chain to the corresponding exhaust valve shaft. The exhaust valve camshafts are driven by a toothed belt.
The intake and exhaust valves are actuated by camshaft cams via hydraulic tappets, which automatically adjust the valve clearances and keep them constant. For this reason, valve clearance adjustment is not required during vehicle maintenance.
The engine has a liquid cooling system. It should be remembered that the engine cooling circuit must be filled with a cooling liquid all year round, which is a mixture of the appropriate concentrate (antifreeze) with anti-corrosion additives and distilled water.
The preparation of the air-fuel mixture and its ignition are provided by the corresponding ignition system. Adjustment of the ignition advance angle or engine idle speed is not required as part of vehicle maintenance.
Warning! The radiator fan may turn on when the engine is off and the ignition is switched off. This may happen repeatedly due to residual heat in the engine compartment. Therefore, when working in the engine compartment, you should always be prepared for the fan to turn on suddenly. It is recommended to disconnect the fan motor power plug for this purpose.
This article was copied from an online resource: AUDIMANUAL.RU