Valve System And Timing Gear
- Camshaft position sensor, intake
- Induction camshaft
- VVT actuator intake camshaft
- VVT unit intake camshaft
- Timing belt
- Gear drive crankshaft
- Mechanical belt tensioner
- VVT-unit exhaust camshaft
- VVT actuator exhaust camshaft
- Exhaust camshaft
- Camshaft position sensor, exhaust
- Cam wheel to vacuum/fuel pump
The valve system on petrol engines in the VEA family is traditionally made up of four valve technology and double camshafts driven by a belt at the front edge of the engine. For a more compact engine design, the camshafts are closer together than on five cylinder petrol engines. This, in turn, gives a slightly steeper valve angle. Both camshafts are fitted with timing gear pulleys with VVT units for variable valve timing. The exhaust camshaft also drives the fuel pump on a separate cam lobe and the vacuum pump with a groove in the rear edge.