davefoc
Philosopher
Iamme,
You said a lot of things in your post that I agree with.
One of the things that is worth considering is your idea that that the device might improve fuel efficiency for poorly tuned engines. In fact, this has been a scam in the past. The promoter carries around an engine that has a particular problem and then installs his gadget and amazingly the engine runs better. This doesn't mean that the device would improve or even not degrade the performance of a properly tuned engine, but some people just assume that if it makes an engine with problems run better then its going to help an engine without problems run better also.
I don't think greater fuel efficiency necessarily will cause less emissions. My guess is that better fuel efficiency would probably mean less CO, but I'm not sure what it would say about NOx type stuff.
I think it was Iconoclast that talked about how adding carburetor plates could sometimes make minor improvements in mileage. This rang true with me. My sense of it is that there are lots of ways to make minor tweaks to engines that in some situations would improve and in others would degrade mileage. The system of the engine is complicated enough that it is very difficult to predict which and it is easily conceivable that what increases mileage in a particular situation would decrease mileage and perhaps have other deliterious effects over the whole range of applications.
I am an electrical engineer that dealt with power consumption issues in hand held computers. I see considerable similarities between fuel economy testing and power consumption testing in electronic devices. At first it seems simple but if you are going to get reliable repeatable results a large number of factors need to be taken into account that require care and expertise.
I have three views of the way it works
1. It doesn't
2. It tweaks the air input resonances and thereby makes minor tweaks in the power and mileage of an engine which can at times be positive and at other times be negative.
3. It promotes mixing of the air fuel mixture in the carbureator and perhaps in the intake manifold so the fuel is burned more completely.
Real testing could analyse the third possibility in detail. Comparing tests with and without the fins in the device and monitoring the output gases for reductions in CO are some ideas that come to mind.
You said a lot of things in your post that I agree with.
One of the things that is worth considering is your idea that that the device might improve fuel efficiency for poorly tuned engines. In fact, this has been a scam in the past. The promoter carries around an engine that has a particular problem and then installs his gadget and amazingly the engine runs better. This doesn't mean that the device would improve or even not degrade the performance of a properly tuned engine, but some people just assume that if it makes an engine with problems run better then its going to help an engine without problems run better also.
I don't think greater fuel efficiency necessarily will cause less emissions. My guess is that better fuel efficiency would probably mean less CO, but I'm not sure what it would say about NOx type stuff.
I think it was Iconoclast that talked about how adding carburetor plates could sometimes make minor improvements in mileage. This rang true with me. My sense of it is that there are lots of ways to make minor tweaks to engines that in some situations would improve and in others would degrade mileage. The system of the engine is complicated enough that it is very difficult to predict which and it is easily conceivable that what increases mileage in a particular situation would decrease mileage and perhaps have other deliterious effects over the whole range of applications.
I am an electrical engineer that dealt with power consumption issues in hand held computers. I see considerable similarities between fuel economy testing and power consumption testing in electronic devices. At first it seems simple but if you are going to get reliable repeatable results a large number of factors need to be taken into account that require care and expertise.
I have three views of the way it works
1. It doesn't
2. It tweaks the air input resonances and thereby makes minor tweaks in the power and mileage of an engine which can at times be positive and at other times be negative.
3. It promotes mixing of the air fuel mixture in the carbureator and perhaps in the intake manifold so the fuel is burned more completely.
Real testing could analyse the third possibility in detail. Comparing tests with and without the fins in the device and monitoring the output gases for reductions in CO are some ideas that come to mind.