Why is variable valve timing fitted to the intake camshaft?
Variable valve timing enables these different behaviours by changing how the intake and exhaust valves work at different engine speeds. Thus, it helps optimise the engine’s performance, whilst also improving fuel economy and emissions.
Is variable valve timing good?
There are many benefits to using VVT and virtually no drawbacks. One benefit is an increase in maximum engine speed (and therefore more peak power) – as much as a 25% increase. Low speed torque is also increased, providing better handling and drivability.
How do you set timing on a Volvo VVT?
1) Set timing to marks, remove belt, remove pulley, remove VVT center nut, replace camshaft seal. 2) install VVT with the pulley turned full-COUNTER CLOCKWISE (bolts far right in oval). Timing mark 1 tooth before timing cover. 3) Tighten VVT 120Nm. 4) Turn the pulley so that the timing mark aligns with timing cover (1 tooth) CLOCKWISE.
How does a variable valve timing ( VVT ) solenoid work?
It works on oil pressure, and can either advance or retard cam position to provide the right performance from the engine. Each camshaft is equipped with a VVT solenoid, which is capable of altering the supply of oil pressure to the camshaft depending on the speed and load of the engine.
Can you check the variable valve timing pulley on a Volvo?
With these quick guide you can check if the Variable Valve Timing Pulley on your Volvo is playing up. This tutorial was done in a Volvo S40, but it is the same in any 4 or 5 cilinders engine in S80, V70, S60, XC70, XC90, S40, V40, C70 Volvo’s.
What kind of exhaust cam gear does a Volvo 5 cylinder have?
Volvo 5 cylinder Cars With VVT… Exhaust Cam Gear V40 and S40 (2004+) owners rejoice! Help and advice is here for you while you’re working on your Volvo’s timing belt. This is also applicable to 2000s Volvo 5-cylinder cars with VVT… variable valve timing.