This is a great overall explanation, and the only concrete way to find maximum efficiency (per all the variables) of a particular engine is to experiment with different timing events. Swirl, quench, air velocity, turbulence etc etc etc affect every engine differently. We can install a cam with a general spec that is in the range of maximum efficiency, but the only way to be ideal is to adjust timing events. Fuel and timing often also require adjustment going from a Dyno to in the vehicle.
Any chance you might do a video for a TURBO engine? I'm told the amount of overlap changes, and/or the timing of the opening/closing of the intake/exhaust valves, to help keep the compressed inlet charge at a higher pressure.
Why doesn’t the word “Diesel” appear in the title? Yes, cam events of closing the intake and opening the exhaust are related but not accurate for the largest number of ICE vehicles in use?
Negatively, it costs energy to overcome back pressure A complete vacuum is the impossible ideal. the closer you get to zero the better. Scavenging is taking back some of the work lost to back pressure
Very good explanation. Tank You (from Portugal)
Thes best explanation hands down of all time
Very useful video and good explanation 💯
Great explanation thanks for the efforts
This is a great overall explanation, and the only concrete way to find maximum efficiency (per all the variables) of a particular engine is to experiment with different timing events. Swirl, quench, air velocity, turbulence etc etc etc affect every engine differently. We can install a cam with a general spec that is in the range of maximum efficiency, but the only way to be ideal is to adjust timing events. Fuel and timing often also require adjustment going from a Dyno to in the vehicle.
Really nicely explained thank you
Any chance you might do a video for a TURBO engine? I'm told the amount of overlap changes, and/or the timing of the opening/closing of the intake/exhaust valves, to help keep the compressed inlet charge at a higher pressure.
You have explained well
Why doesn’t the word “Diesel” appear in the title?
Yes, cam events of closing the intake and opening the exhaust are related but not accurate for the largest number of ICE vehicles in use?
Amazing 👏
I don't get it. I have a k24z7. How do I find the stock degree where my overlaps are stock and where do I want them with VTC.
Thanks allot, u have perfectly explained it,,
what the degrees for? the shaft?
Thanks !! Good explanation!!
Good explanations
Love the expansion
thank you!
How does exhaust back pressure effect torque
Negatively, it costs energy to overcome back pressure
A complete vacuum is the impossible ideal. the closer you get to zero the better. Scavenging is taking back some of the work lost to back pressure
Please help me with another video which includes valve averlap
When does valve overlap occur?
it is when both in and ex valves are open at the same time 25+15=40 degrees of overlap (when he called stroke...)
Powerful
thks so much!!!!
Thanks You
I detect a Canadian accent. 🙂
👍 good