The Road to the 50% Thermally Efficient Internal Combustion Engine | Pat Symonds

[Logic]

The Road to the 50% Thermally Efficient Internal Combustion Engine | Pat Symonds

https://www.youtube.com/watch?v=mUq-K9jcaB8

Some interesting stuff for the engine builders here.
There are still engine builders here right!?
They haven't all been chased away by being told: "It's Impossible!" and 'politics' yet..?

[redpoint5]

I'll give this a listen...

As a tangent, efficiency improvements remind me of Jevons Paradox; that utilizing a resource more efficiently increases consumption.

The main reason an EV is a viable vehicle option is because it's 90% efficient while a petrol one is ~25%. If petrol vehicles were 50% efficient, far fewer people would be interested in an EV. This is an example of how Jevons Paradox works.

[Piwoslaw]

Originally Posted by redpoint5

I'll give this a listen...

As a tangent, efficiency improvements remind me of Jevons Paradox; that utilizing a resource more efficiently increases consumption.

The main reason an EV is a viable vehicle option is because it's 90% efficient while a petrol one is ~25%. If petrol vehicles were 50% efficient, far fewer people would be interested in an EV. This is an example of how Jevons Paradox works.

Also, many people assume that if their car/appliance/LED light/etc. is more efficient, then they no longer need to pay attention to saving fuel/energy, because "the car/appliance will do it for them". So they end up using it more often and/or in a less efficient manner.

[pgfpro]

Originally Posted by Logic

The Road to the 50% Thermally Efficient Internal Combustion Engine | Pat Symonds

Some interesting stuff for the engine builders here.
There are still engine builders here right!?
They haven't all been chased away by being told: "It's Impossible!" and 'politics' yet..?

One of my favorite videos.

There are rumors that F1 has reached around 60% efficiency. Its amazing what a pre-chamber can do with a 4-valve turbo engine. Add GCI with a revamped fuel to the mix and it gets even better.

[redpoint5]

Perhaps that's the best strategy for whenever the cars get too fast; impose consumption limits and see what they come up with.

[Isaac Zachary]

Originally Posted by redpoint5

Perhaps that's the best strategy for whenever the cars get too fast; impose consumption limits and see what they come up with.

Fuel rationing?

The other thing that affects usage is the price. If gasoline were $35 per gallon then people would try to use less of it.

Right now the better fuel efficiency of both ICEVs and EVs, as well as relatively low fuel and electric prices, give people an excuse to buy land yatchs.

[Logic]

Originally Posted by pgfpro

One of my favorite videos.

There are rumors that F1 has reached around 60% efficiency. Its amazing what a pre-chamber can do with a 4-valve turbo engine. Add GCI with a revamped fuel to the mix and it gets even better.

Wow! 60% is huge!
So the (Copper Plated) Pre-Chamber 'rabbit hole' you say!?


Have you looked at this?
https://ecomodder.com/forum/showthre...tml#post698933

"...the time of ignition shifts toward earlier crank angles...

...pressure curves also look a little smoother...

...enhances ignitability...

...Ozone addition is found to decrease ignition delay and increase cetane number..."

Pity about the marginal compression ratio decrease, but interesting nonetheless for more std engines.

[Logic]

Originally Posted by redpoint5

Perhaps that's the best strategy for whenever the cars get too fast; impose consumption limits and see what they come up with.

Well F1 brings innovations like pre-chambers and lean burn into the limelight, increasing the chances of it trickling down into production cars.
From that POV consumption limits are a very good thing for us all, hopefully.

[redpoint5]

Originally Posted by Logic

Well F1 brings innovations like pre-chambers and lean burn into the limelight, increasing the chances of it trickling down into production cars.
From that POV consumption limits are a very good thing for us all, hopefully.

I'm agreeing, which is why I suggested consumption limits as the primary method of speed reduction.

In the past, technologies like active suspension have been banned as a means of speed reduction. That accomplishes the priority to slow the vehicle down, but also eliminates innovation that could trickle down.

My overall point is that constraints should prioritize safety and encourage innovation that might be useful to the automotive markets.

[pgfpro]

This is a post I made on the F1 Technical forum I posted back in 2014 before the announcement from the teams that that some of them will be using a lean-burn pre-chamber. Now all of them use it. I got a lot of flak from F1 engineers on F1techical thinking there is no way they would go this direction. They were wrong and I was right. Now I'm not trying to brag about this, but my point is to keep an open mind. If we don't we become stagnant!!! Needless to say, after this post I got a lot of help from a few F1 engineers that helped me moving forward on my project.

I truly enjoy this type of post and all the comments.

I'll post later some information on my pre-chamber/engine design and some hurdles that I had to overcome and how to make a lean burn pre-chamber achieve road relevance.

https://www.f1technical.net/forum/vi...365070#p365070