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Thread: Is there any documentation showing when VVL was invented?

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Posts: 1-10 of 19
2009-04-03 05:10:49
#1
Is there any documentation showing when VVL was invented?
I am curious when VVL actually was invented if that is what you would call it. I can't seem to really find any history on it. Other than the fact that it seems the first production of it was probably in 1996.
2009-04-03 15:23:27
#2
it wasnt invented but more made better from past technology.....each company gives it there own name and there own individual tweeks
2009-04-03 15:59:35
#3
Originally Posted by THOR
it wasnt invented but more made better from past technology.
Oh no. It was most certainly invented.

I think variable valve lift was invented before VTEC (the first variable valve lift and timing design) but I could be wrong.

The Father of VTEC
2009-04-03 16:13:40
#4
Variable valve timing - Wikipedia, the free encyclopedia

why i say what i said.....
2009-04-03 16:22:56
#5
Seems pretty clear cut to me.

Originally Posted by Wikipedia
Fiat was the first auto manufacturer to patent a functional automotive variable valve timing system which included variable lift. Developed by Giovanni Torazza in the late 1960s, the system used hydraulic pressure to vary the fulcrum of the cam followers (US Patent 3,641,988). The hydraulic pressure changed according to engine speed and intake pressure. The typical opening variation was 37%.
2009-04-03 18:35:46
#6
well read what the post asked and then read what u highlite and if it still makes sense to u then......cant say any further
2009-04-03 18:50:24
#7
i think he just wants to know when nissan started using vvl
2009-04-03 21:57:00
#8
Yeah fiat motorpsort (Ferrari) used them on their F1 cars for a while in conjunction with their turbo engines. The idea was to gain a better powerband up high whilst maintaining a good midrange power for their V8 turbo engines. If you listen to some old 70's f1 cars you can hear the great note changes.
2009-04-03 23:03:28
#9
VVT = VVL? I was more so curious when nissans VVL came about compared to Hondas VTEC. I think there are a few others out there asking this same question.

Great information from everyone none the less
2009-04-03 23:07:24
#10
vvt is variable valve timing an vvl is variable valve lift.. so not only do they have variable lift but also variable timing lol.. however im not sure when it actually came into production, i believe honda was like 89?
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