racprops
OBS Enthusiast
My nearly lifelong understanding is if the factory put it on an engine it is there for a very good reason.
My understanding is that EGR helps with MPG….and I have read that adding even more can make even more MPG. This is by displacing the incoming air/fuel charge.
I also read that adding more can induce the throttle plate to be made to be more open which can at lower high vacuum and that vacuum lowing can lower the pumping losses.
It is a funny fact that we are told that we will get the best MPG when the vacuum gauge is at its highest….when the engine is now fighting that very vacuum…
A diesel engine has no pumping losses as it has no throttle plate, and thus no engine vacuum and no engine braking. An engine driven vacuum pump is then needed for vacuum controls and lucky me I already converted to hydro boost brakes, so no vacuum brake booster.
The ugly is all the crud that gets into the manifold and the ERG Valves…and I think on the intake valves??
Too bad there is no filter to remove the crud and thus run EGR cleaner.
So the question is to EGR or not to EGR??
Which will give the best MPG?? Note my main aim is the most MPG not performance, not HP and NOT high RPMs.
What about water injection instead or with EGR, can water replace EGR or better clean up the crud?
Inquiring Mind wants to know.
Thanks.
Rich
My understanding is that EGR helps with MPG….and I have read that adding even more can make even more MPG. This is by displacing the incoming air/fuel charge.
I also read that adding more can induce the throttle plate to be made to be more open which can at lower high vacuum and that vacuum lowing can lower the pumping losses.
It is a funny fact that we are told that we will get the best MPG when the vacuum gauge is at its highest….when the engine is now fighting that very vacuum…
A diesel engine has no pumping losses as it has no throttle plate, and thus no engine vacuum and no engine braking. An engine driven vacuum pump is then needed for vacuum controls and lucky me I already converted to hydro boost brakes, so no vacuum brake booster.
The ugly is all the crud that gets into the manifold and the ERG Valves…and I think on the intake valves??
Too bad there is no filter to remove the crud and thus run EGR cleaner.
So the question is to EGR or not to EGR??
Which will give the best MPG?? Note my main aim is the most MPG not performance, not HP and NOT high RPMs.
What about water injection instead or with EGR, can water replace EGR or better clean up the crud?
Inquiring Mind wants to know.
Thanks.
Rich