Variable cam timing

[SRavet at bangate.compaq.com]

ehernan3 at ford.com (Edward Hernandez (R)) Wrote:
| 
| 
| ----- Begin Included Message -----
| "what about a synchro-type system where the amount of slip between the
| driving motor (driven from the crank) and the drivenmotor (connected to 
the
| timing chain / cam gear itself) can be varied, giving a variable cam 
timing
| technique? it could be extended into having different timing for intake &
| exhaust, for dohc engines. The motors I thought of using would be some 
sort
| of induction motor, to eliminate the use of brushes."
| 
| Ooh, you're so close.........hint: you don't need the motor;)
| 

Come on Ed, don't tease us like that.

I remember a mechanical type described in Motor Trend a while back.  The 
chain end of the camshaft was threaded, and the sprocket screwed onto the 
thread.  There was an oil driven piston that pressed against the sprocket.  
As the piston moved the sprocket back and forth, it caused the camshaft to 
be advanced or retarded via the threads.  It was a very coarse thread.

--steve

Steve Ravet
sravet at bangate.compaq.com
Baby you're a genius when it comes to cooking up some chili sauce...