Just for your info....
Variable valve timing and lift technology.
Variable valve timing = to get more torque
Variable valve lift = to get more horse power
HONDA. (1983)
VTEC = Variable valve lift control
i-VTEC = intelligent + Variable valve timing + variable valve lift + variable valve phasing
SOHC VTEC-E = Variable valve lift control to increase fuel economy
SOHC VTEC = variable valve lift on both intake and exhaust valves
3 stage VTEC = SOHC VTEC-E + SOHC VTEC
i-VTEC I = Ultra lean i-VTEC to futher increase fuel economy
Advance i-VTEC = Intelligent + Continuously variable valve lift + timing control + continuously variable phase control
TOYOTA. (1991)
VVT = 2 stage variable valve timing
VVTI = intelligent + variable valve timing only
Dual VVTI = intelligent + variable valve timing on both intake and exhaust
VVTL-I = intelligent + Variable valve timing + variable valve lift (ceased production - does not meet Euro IV emissions requirement)
MITSUBISHI. (1992)
MIVEC = Variable valve timing + variable valve lift on intake valve only
Dual MIVEC = Variable valve timing + variable valve lift on intake and exhaust
MAZDA.
S-VT = Variable valve timing on intake valve only
NISSAN. (1986)
NVSC = Variable valve timing on intake valve only
VVL = Variable valve timing + variable valve lift + variable valve phasing
BMW. (1992)
VANOS = Variable valve timing on intake valve
Double VANOS = Variable valve timing on intake and exhaust valve
Valvetronic = Variable valve lift
MERCEDES
VVT = Variable valve timing on both intake and exhaust valve
Similar System.
Intelligent + Variable valve timing + variable valve lift + variable valve phasing
(Honda I-VTEC) = (Toyota VVTL-I) = (Mitsubishi MIVEC) = (Nissan VVL) = (BMW VANOS + Valvetronic)
Intelligent + Variable valve timing only
(Honda n/a) = (Toyota VVTI) = (Mitsubishi n/a) = (Nissan NVSC) = (BMW VANOS) = (Mercedes VVT) = (Mazda S-VT)
