VVT Oil Control Valve Variable Valve Timing Toyota Mark Verossa
Progres Brevis Crown 15330-46021
1. Part Name: VVT Control Valve Engine Variable Valve Timing Solenoid
2. Part Number: 15330-46021
3. Car Model: Toyota Mark Verossa Progres Brevis Crown
4. Packing: Box Outside + Poly Bag Inside
5. Size: OEM Standard
6. Conditon: Brand New
7. Part Description: Valve Assy, Camshaft Timing Oil Control
|Japan||10/2000-05/2007||TOYOTA MARK 2, MARK 2 BLIT||GX11*,JZX11*|
|Japan||09/1999-05/2007||TOYOTA CROWN, CROWN MAJESTA||GS171,JKS175,JZS17*,UZS17*|
About Variable valve timing VVT :
In internal combustion engines, variable valve timing (VVT) is the
process of altering the timing of a valve lift event, and is often
used to improve performance, fuel economy or emissions. It is
increasingly being used in combination with variable valve lift
systems. There are many ways in which this can be achieved, ranging
from mechanical devices to electro-hydraulic and camless systems.
Increasingly strict emissions regulations are causing many
automotive manufacturers to use VVT systems.
VVT systems are simple to diagnose. Most parts are non-serviceable
and have integrated sensors. On a conventional engine, exhaust and
intake valves are open or closed depending on the crankshaft and
the pattern cannot be altered. With VVT, it is possible to have the
timing altered to match the engine speed, torque requirements, and
valve overlap. This increases both performance and fuel economy.
Another great advantage of VVT is its ability to take some of the
load off the crankshaft by opening the valve before the end of the
combustion stroke. VVT systems have made Exhaust Gas Recirculation
(EGR) valves obsolete. EGR valves put smog causing nitrous oxides
back into the intake manifold. The VVT system controls the timing
to leave inert gas in the chamber for the next combustion cycle,
thus controlling the combustion temperature and the production of
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item you need in stock.
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6 months warranty against B/L date. 100% test before send the goods
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