1.8 and 2.0 l (AVJ, BFB, ALT): In-line engine with two overhead camshafts (DOHC), has three intake and two exhaust valves for each cylinder. One camshaft drives the intake valves, the other the exhaust. The exhaust camshaft is driven by the crankshaft via a toothed belt. The intake and exhaust camshafts are connected to each other by a chain.
2.0L FSI (AWA): In-line engine with two overhead camshafts (DOHC), has two intake and exhaust valves for each cylinder.
Petrol 4-cylinder FSI 2.0 l engine
- 1 - Ignition coil
- 2 - Exhaust camshaft. At the rear end is the camshaft tilt motor
- 3 - Inlet camshaft. At the front end is a Hall sensor rotor, and at the rear end is a high pressure pump for fuel injection. The drive is carried out from the exhaust camshaft through the chain
- 4 - Lever
- 5 - Injector
- 6 - Toothed belt
- 7 - Oil pump
- 8 — the Electric motor of an inclination of a camshaft
- 9 - Throttle control unit
- 10 — the Inlet pipeline
- 11 - Vacuum accumulator
- 12 — the Roller of switching of the inlet pipeline
- 13 — the Electric motor of management of the gate of the inlet pipeline
- 14 - Crankshaft
One camshaft drives the intake valves, the other drives the exhaust valves. Exhaust camshaft (1) driven by the crankshaft (2) toothed belt (3). The intake and exhaust camshafts are connected by a chain (4). Behind the exhaust camshaft is a rotary engine (5), with which the angle of installation of the exhaust camshaft can be automatically shifted up to 42°. At the rear of the intake camshaft (6) there is a high pressure pump of the gasoline direct injection system. It is actuated by double cam (7) intake camshaft.
The main elements of the cylinder head of engines AVJ, BFB, ALT 1.8 l.
- 1 - Bearing cap exhaust camshaft
- 2 - Inlet camshaft bearing cap
- 3 - Gas distribution chain
- 4 - Double bearing cover
- 5 - Inlet camshaft
- 6 - Pusher
- 7 — Crackers of the split lock
- 8 — a gear wheel of a cranked shaft
- 9 - valve spring
- 10 - Oil seal
- 11— Cap
- 12 - Camshaft position sensor (CMP)
- 13 - Inlet valve
- 14 - Oil seal
- 15 - Exhaust valve
- 16 - Cylinder head
- 17 - Segment plug
- 18 - Chain tensioner
- 19 - Valve plate
- 20 - Oil deflector cap
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