windrush:
I think the two stroke was a brave attempt by Foden’s to try something in heavier weight trucks that British operators were not used to, and even to this day they have never really accepted anything other than ‘traditional’ four stroke engines.Pete.
The main issue with two strokes is getting enough air into the cylinder charge and relying on just the scavenging of the outgoing exhaust to drag the charge in was never the ideal solution.The loss of the induction stroke really wastes a lot of cylinder volume because there isn’t time to fill the cylinder properly before the start of the compression stroke unlike in the case of a four stroke.Bolting a turbocharger to a two stroke is a game changer in that regard providing potentially massive effective specific outputs both torque and power.