What is VVT chain?
Cloyes’ newest product line, Variable Valve Timing (VVT) Chain Kits, offer technicians a complete repair solution for higher mileage vehicles. Designed for the replacement of worn or damaged timing chains, tensioners, sprockets, guides, and VVT actuators, also known as cam phasers.
How does the variable valve timing ( VVT ) work?
The VVT varies the timing of opening and closing of valves for multiple engine speeds. At high speed, the Inlet valves open quite earlier so that more air-fuel mixture or ‘charge’ enters the cylinders. This helps to increase engine’s breathing which also improves its ‘ volumetric efficiency ’ to a large extent. How VVT Works?
How does the timing chain work in an engine?
A timing chain (or in some cases, a timing belt) connects the crankshaft to the camshafts. The shafts must be kept in sync so that the valves open and close at the correct point in the piston’s travel. In a traditional engine, valve timing (when the valves open and close) is fixed.
Why is my VVT chain not working properly?
When the engine oil becomes clogged with debris, dirt or other foreign particles, it tends to clog up the passageway from the solenoid to the VVT chain and gear. If your engine oil has not been changed out on schedule, it could damage the VVT solenoid, the VVT chain, and the gear drive.
What happens when the VVT solenoid is blocked?
When the VVT solenoid activates, oil is sent to lubricate the variable valve timing chain and gear assembly. If the VVT solenoid fails or is blocked, the lack of proper lubrication can cause the timing chain and gear to prematurely wear or break entirely.
How does variable valve timing work in a VVT?
The VVTs first generation uses a two-step variation that boosts the performance at two different RPMs. The first variation of valve timing is fixed for up to 3500 rpm and the other phase is the one with full load for more than 3500 rpm. (low and medium cam profile)
How to check timing chain status VVT-i?
How to check timing chain status VVT-i engine Toyota. Years 2000 to 2008. – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.
Where is the timing chain located in an engine?
The chain is located inside of the engine and needs to be lubricated by the oil in the engine, making oil maintenance important as well. Every time you use the engine, the timing chain is in use. When does a timing chain need to be replaced?
Which is the most powerful variable valve timing system?
Honda has already improved its 2-stage VTEC into 3 stages for some models. Of course, the more stage it has, the more refined it becomes. It still offers less broad spread of torque as other continuously variable systems. However, cam-changing system remains to be the most powerful VVT, since no other system can vary the Liftof valve as it does.