Information AboutVvt-i |
| CATEGORIES ABOUT VVT-I | |
| valve timing tradenames | |
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VVT-i, introduced in 1996, varies the timing of the Intake Valve s by adjusting the timing chain connecting the intake Camshaft . A pump applies Hydraulic pressure to adjust the gear driving the timing chain. In 1998 "Dual" VVT-i (adjusts both intake and exhaust camshafts) was first introduced in the RS200 Altezza's 3S-GE engine. Dual VVT-i is also found in the Toyota's new generation of V6 engine, 3.5L V6 found in the Avalon, RAV4, and Camry Toyota recently started offering a new technology, VVTL-i, which can alter valve ''lift'' (and ''duration'') as well as valve timing. This is accomplished differently than Honda 's VTEC . Instead of switching between two different cam shafts, there are spacers that are slid between a single cam shaft and the valves. At higher RPM, controlled by the ECU , oil pressure is directed to push the spacers between the camshaft lobes and valves, effectFE]]'' V6. It was first available on the Toyota Celica GTS (2ZZ-GE) in 2000. See also: |
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