Attention: TDR Forum Junkies The internet is a pretty big place, and with a simple Google search one can usually find evidence to support just about any valid point. For your above post, I cannot find anything to support what you are saying. However, I can find results that contradict what you have posted. You should try fact-checking before hitting the "submit" button.
1. Ambient temperature has nothing to do with a fuel's BTU output. I cannot find anything that states otherwise. And somehow you're trying to connect the cloud point of diesel (20*F on the high side btw, not 40F) with BTU output...? Again, nothing.
2. "It is not the BTU's that generate the power it is the expansion of the gasses that push the piston." <- That one tells me you don't know what a British Thermal Unit represents in the world of physics. What do you think causes the gasses to expand? Knowing the BTU content of the fuel, with a little converting and a couple equations you could determine exactly how much pressure would be in the cylinder pushing on the piston. Google it - they're pretty standard gas laws.
3. Yikes. Any engine with a cam that has valve overlap (exhaust and intake open at the same time) is taking advantage of scavenging. Every cam available for our engines has overlap. Scavenging is based on a continuous acceleration of the gasses through the engine, and that is enhanced by having the greatest temperature differential possible between intake and exhaust. Being turbo'd is irrelevant - charge pressure is close to exhaust pressure, so anything you can do to improve the airflow through the engine still counts. I'm not sure where the rest of your thought was going on that one since you kinda went off the rails.
4. Totally off the rails at this point. Nothing valid enough to reply to. Even how you used my quote doesn't make sense. A little PUI, methinks. Interesting perspective on cold weather ops from a guy in Georgia though.
I can't argue with fiction. As I've asked before in other threads, please provide links to proof of your claims. Maybe this one time you might take me up on it?
1. Ambient temperature has nothing to do with a fuel's BTU output. I cannot find anything that states otherwise. And somehow you're trying to connect the cloud point of diesel (20*F on the high side btw, not 40F) with BTU output...? Again, nothing.
2. "It is not the BTU's that generate the power it is the expansion of the gasses that push the piston." <- That one tells me you don't know what a British Thermal Unit represents in the world of physics. What do you think causes the gasses to expand? Knowing the BTU content of the fuel, with a little converting and a couple equations you could determine exactly how much pressure would be in the cylinder pushing on the piston. Google it - they're pretty standard gas laws.
3. Yikes. Any engine with a cam that has valve overlap (exhaust and intake open at the same time) is taking advantage of scavenging. Every cam available for our engines has overlap. Scavenging is based on a continuous acceleration of the gasses through the engine, and that is enhanced by having the greatest temperature differential possible between intake and exhaust. Being turbo'd is irrelevant - charge pressure is close to exhaust pressure, so anything you can do to improve the airflow through the engine still counts. I'm not sure where the rest of your thought was going on that one since you kinda went off the rails.
4. Totally off the rails at this point. Nothing valid enough to reply to. Even how you used my quote doesn't make sense. A little PUI, methinks. Interesting perspective on cold weather ops from a guy in Georgia though.
I can't argue with fiction. As I've asked before in other threads, please provide links to proof of your claims. Maybe this one time you might take me up on it?
