How exactly does VTEC work?
Honda-Tech Member
Joined: Jun 2002
Posts: 4,133
Likes: 0
From: New Jersey
Re: How exactly does VTEC work? (dallasyoung)
Valve Timing Electronic Control
Utilizing different cam lobes at different RPM's so the motor can be efficient yet powerful when needed. And yes VVTI is similar.
Pretty much allowing more air to get in the cylinders and to allow more exhaust gas out. Alas, more power.
http://www.howstuffworks.com will give you a more thorough explanation.
Utilizing different cam lobes at different RPM's so the motor can be efficient yet powerful when needed. And yes VVTI is similar.
Pretty much allowing more air to get in the cylinders and to allow more exhaust gas out. Alas, more power.
http://www.howstuffworks.com will give you a more thorough explanation.
Junior Member
Joined: Oct 2001
Posts: 744
Likes: 0
From: far south east, usa
Re: How exactly does VTEC work? (dallasyoung)
VVTi is more similar to MIVEC and VANOS than VTEC. Those systems have control over cam timing, but not lift. They can alter camshaft timing continuously over a given range (ie: +/- 50 degrees).
VTEC has control over lift and cam timing by switching b/w two different cam profiles (commonly referred to as the low cam and high cam), but it's not continuously variable like the aforementioned systems.
The newest generation of variable valve timing and lift control are VVTi-L and iVTEC. They are conceptually the same and both have continuously variable cam timing and two stage cam lobes for control of lift (and timing).
VTEC is ECU activated. The ECU determines when to switch cam lobes by taking input from ECT, TPS, and VTECOPS parameters.
VTEC has control over lift and cam timing by switching b/w two different cam profiles (commonly referred to as the low cam and high cam), but it's not continuously variable like the aforementioned systems.
The newest generation of variable valve timing and lift control are VVTi-L and iVTEC. They are conceptually the same and both have continuously variable cam timing and two stage cam lobes for control of lift (and timing).
VTEC is ECU activated. The ECU determines when to switch cam lobes by taking input from ECT, TPS, and VTECOPS parameters.
Honda-Tech Member
Joined: May 2003
Posts: 7
Likes: 0
Re: How exactly does VTEC work? (IN VTEC)
iVTEC and VVTLi are combinations of a continuous variable valve timing system with a two or three steps variable valve lift system.
At http://www.pattakon.com you can see a new stepless VTEC system.
You like it or not, it can help understand the VTEC and VVTLi systems with animations and plots.
Thanks
At http://www.pattakon.com you can see a new stepless VTEC system.
You like it or not, it can help understand the VTEC and VVTLi systems with animations and plots.
Thanks
Trending Topics
Honda-Tech Member
Joined: Jan 2000
Posts: 8,062
Likes: 0
From: Hockeytown, MI
Re: How exactly does VTEC work? (manolis)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manolis »</TD></TR><TR><TD CLASS="quote">iVTEC and VVTLi are combinations of a continuous variable valve timing system with a two or three steps variable valve lift system.
At http://www.pattakon.com you can see a new stepless VTEC system.
You like it or not, it can help understand the VTEC and VVTLi systems with animations and plots.
Thanks</TD></TR></TABLE>
Cool link
At http://www.pattakon.com you can see a new stepless VTEC system.
You like it or not, it can help understand the VTEC and VVTLi systems with animations and plots.
Thanks</TD></TR></TABLE>
Cool link
Thread
Thread Starter
Forum
Replies
Last Post