----- Original Message ----- From: "Erik Lane" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 09, 2005 3:20 AM Subject: Re: [Biofuel] Bad news for Diesel driver
: I don't believe that with the high compressions required of a diesel : engine it is possible to have a non-interference design. To get the : high compression there is VERY little space at TDC. I don't think : there is any way to design around that. If the valves were recessed : into the head then there would be more space underneath them. : : The proportion of displaceable space (where the piston travels) to : non-displaceable (everywhere else) has to be very high (20:1 or maybe : 22:1) to get this compression. That doesn't leave much of a : possibility to play with. ******************** I would think if any diesel could be a no interference design it may be the 2 cycle Detroits. No intake valves, multiple exhaust valves and a supercharger to push in fresh air in the spent out. I also agree that interference design isn't a failure on the part f the engineers. Doug _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
