Has anyone seen or installed a DynoValve?

[Dynovalve Frank]

Before you read the CARB & Testing data please follow the link to our testing laboratory. If there's any question to our findings being "scewed" their credibility will hopefully "quell" those assumptions.

Also please bear in mind that nearly when trying to get EPA and CARB Exemptions the emphasis is always on tailpipe emissions with fuel usage being secondary. Yeah I dont like it either but the law is the law.

Testing Lab: California Environmental Engineering, LLC. | Home

Late Model CARB: http : // www . savicorp . com/Reports/CARB-EO-Test-Results.pdf

EARLY MODEL CARB: http : // www. savicorp. com/Reports/order_a-95-021.htm#order

MILEAGE TEST RESULTS:

FORD E-350: http : // www. savicorp. com/reports/2008Ford350.pdf

TOWN CAR: http :// www. savicorp. com/reports/2000Lincoln.pdf

There's a ton more available, just please tell me what you want to see/explain, etc etc.

Thank you.

[MetroMPG]

Hi Frank,

Is the link to the "EPA certification" included in the list of links? (It's not immediately obvious.)

[Dynovalve Frank]

CARB stands for California Air Resources Board. The have become the last word in automotive emissions compliance and are regulated under the EPA. This relationship has become so inter-weaved over the years that CARB which is technically a State Agency has become the Automotive Emissions Arm for the EPA. Hence, anything approved or exempted by CARB defaults to an EPA Certification.

As mentioned in my last post, CARB and the EPA "do not endorse" "nor make claim for" any product or service under the guise of additional fuel economy, Period. They simply test a given product (in this case) at the manufacturers expense to confirm the "device/product" does not have detrimental effects upon the factory installed emissions control system.

There are a myriad of products on the market that claim to increase fuel economy, but usually at the expense of tailpipe emissions. (The in-line Intake Air Temp Sensor mod is a perfect example, not only does it increase tail-pipe emissions, but it wreaks havoc on the valves being the motor is always running very lean) Long term use will cause significant engine damage being the computer is being fooled into said condition.

[t vago]

If you've really read this thread, as you have claimed to do, Dynovalve Frank, then you can explain the theory of operation of this "Dynovalve" here. No linking necessary.

[t vago]

Originally Posted by MetroMPG

Hi Frank,

Is the link to the "EPA certification" included in the list of links? (It's not immediately obvious.)

Originally Posted by Dynovalve Frank

CARB stands for California Air Resources Board. (blah-blah-blah)...

As mentioned in my last post, CARB and the EPA "do not endorse" "nor make claim for" any product or service under the guise of additional fuel economy, Period. They simply test a given product (in this case) at the manufacturers expense to confirm the "device/product" does not have detrimental effects upon the factory installed emissions control system.

There are a myriad of products on the market that claim to increase fuel economy, but usually at the expense of tailpipe emissions. (blah-blah-blah)

Answer. The. Question.

[Dynovalve Frank]

The PCV Valve is the grandfather and origin of all emissions control systems to date. In the early 1950's a GM Engineer was dispatched to California in the hopes of discovering why the Smog condition was so prevelant there versus the rest of the country. At the time NYC was running second but that was attributed too all the manufacturing which was taking place here during that time. Los Angeles and the surrounding counties did not have a large manufacturing infrastructure so clearly there was something else causing it.

It was found that it was Blow-By, in where the lost fuel and hydrocarbons were being vented to atmosphere. The accumulated crankcase gasses were far worse than what was coming from the tailpipe. The solution was to add the lowly PVC Valve to reroute the lost gasses back into the combustion stream.

Oddly enough the PCV Valves origin stemmed from WWII in where it was added to tanks so they could forge deep water.

In 1953 GM ordered that all production luxury cars be equipped with the PCV valve. (Buick, Olds, Caddy) In 1962 the Federal Govt' ordered the PCV Valve be equipped on every gasoline passenger vehicle produced or imported in the USA.

To Date, even with all the advancements is tailpipe emissions reductions the PCV Valve has remained virtually unchanged.

[Dynovalve Frank]

I'm getting there, you wanted proof I'm giving it to you. But to understand why something works it's generally better to be educated as to why the solution was required to begin with.

[t vago]

Originally Posted by Dynovalve Frank

I'm getting there, you wanted proof I'm giving it to you. But to understand why something works it's generally better to be educated as to why the solution was required to begin with.

Ah, so we're uneducated idiots, now.

We get it. The DynoValve is supposed to replace the PCV valve, somehow. Boy, you really didn't read this thread, did you?

Kindly explain the theory of operation behind the DynoValve. Don't give us pretty-sounding college lectures about the PCV system.

[t vago]

Here - I'll even give examples of how to post theories of operation:

Lean burn works to improve fuel economy by introducing less gasoline into each cylinder to provide an AFR greater than 14.7:1. More air is sucked into each cylinder for a given amount of gasoline, to achieve this. This has the result of reducing intake manifold vacuum, causing the engine to work less to maintain that vacuum, which causes the engine to burn less gasoline as a result.

Inflating tires 5 psig over rated pressure works because it decreases the rolling resistance of the tires. The engine does not have to work as hard to push the vehicle down the road, as a result, which causes the engine to burn less fuel as a result.

Installing a truck aerocap on a truck improves fuel economy because it makes the truck more easily able to push itself through the air as it moves down the road. The truck engine does not have to work as hard as before, so the truck does not have to burn as much fuel as before.

See? Simple! Those examples took me all of 3 minutes to type, too! No cumbersome college lecture about the hallowed history of some vehicle part needed.

[Dynovalve Frank]

The Dynovalve is essentially a computer controlled PCV valve. It utilizes a small microprocessor to control the recovery of the crank-case gasses over the Dynamic Range of the engines operation versus, the mechanical PCV valve which only operates at peak efficiency in a very Narrow Band of operation.

Both devices are still completely reliant on the engine's vacuum signal, Where the DynoValve differs is that it is nearly always recovering the crankcase gasses nearly in full except at idle where it's orifice design allows it to act exactly like a stock PCV Valve. Without this default (at idle) feature the Dynovalve would act as a large vacuum leak and have terrible effects on drivability.

The percentage of fuel now being scavenged in a continuous stream coupled with the hydrocarbons (which is an additional combustible) are seen by the factory PCM as a rich condition via the O2 sensors. Therefore the PCM modifies it's injector pulse width signal to compensate. So basically by recovering these lost gasses to be recycled and capitalizing on the PCM's abilities is where the increase in fuel economy stems from.

Clearly vehicle type, driving habits, driving environment (city/hwy) fuel types/blends which vary greatly across the country all have a role in your final mileage gain. But the emissions reductions are nearly always constant by vehicle type.

The last benefit we can proclaim is that your oil change intervals can be broadened should you feel comfortable in doing so. Oil contamination is mainly caused by Blow-By and the mixing of these lost gasses with such. By removing the the unburned gasses before it has a chance to blend with the oil we've been able to double the oil lifespan on our internal vehicles.

On my personal grocery getter, 2003 base model Acura RSX I've hit 46 miles per gallon on the highway while cruising at 65 MPH over 100 miles. City driving has seen an average of approx' 15%.