Bob, There's a lot of interest in the VVL systems as H*ndah & Renault have had good results in small engines with this technology, you never know it might spill over into more Nissan engines as I believe there is a SR20 with something like this in it but I think it's hydraulically driven. BMW have been playing with a mechanical system along the lines that they use in their F1 engine, and I read that they have extracted over 200 hp/litre reliably with their system, they've just got to work out how to harness 18,000rpm for a road vehicle.
regards Terry -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bob Sent: Wednesday, 20 March 2002 11:05 PM To: [EMAIL PROTECTED] Subject: Re[4]: SR questions Hello Terry, The next evolution of the variable valve timing systems used on modern cars is using solenoid driven valves - using a microprocessor to control valve opening and closing means that the cam profile can be tailored exactly to the engines requirements at every load point in the map. Apparently the current draw is a big problem in these systems, but last I heard Mercedes were playing with a hydraulic version. Wednesday, March 20, 2002, 10:08:08 PM, you wrote: --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
