Norm Peterson
corner barstool sitter
Actually, it is possible to incorporate VVT into a "single-cam" OHV engine. But you have to think a bit outside the usual camshaft design box. Think "cam in cam".If you're referring to the profile of the cam, it's still fixed. You can adjust the cam phase angle with respect to the crankshaft on the fly, but the intake to exhaust phasing is set. The beauty of separate cams for intake and exhaust is the ability to modify things like valve overlap while the engine is operating.
It also makes one wonder why we're still messing with cams anyway when a solenoid can act directly on the valve.
https://chryslercorporationllc.blogspot.com/2007/08/viper-v10-introduces-cam-in-cam.html
Norm
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