Originally posted by Kris
to ghosthunter: odee is the dealer of the said device, and not the inventor. he sells that product coz he believes it does work. therefore, i dont think he is in that position to give u scientific facts to prove that this device does really work. why dont u try it urself and tell us if it really does work or not?
Wow, your first (and only) post.

some scientific facts that the device does not deliver as promised:

(Note: these has been posted before in this message thread)

http://home.earthlink.net/~graham1/M...s/LeanBurn.htm


Lean Burn - Why it is Usually Avoided

An Otto Cycle engine is made to operate below its peak power by restricting the flow of air into the engine with a throttle valve. Drawing air into the cylinder past this restriction creates a partial vacuum, which takes energy. The reduction in fuel efficiency thus caused is called "pumping loss". The Prius engine uses the Atkinson Cycle to reduce this loss. Power reduction is achieved by keeping the intake valve open and expelling part of the fuel/air mixture as the piston rises. A side effect is a lower peak power for a given engine size.

An apparently superior method to either closing the throttle or expelling fuel/air mixture is to keep the volume of air allowed into the cylinder the same as for full power and to reduce only the amount of fuel. This is called "lean burn", because a fuel/air mixture with less fuel than is needed to consume all the oxygen in the air is called "lean". Some engines use this technique, notably the Honda Insight engine. However, special design considerations are needed to overcome several problems. This side-bar explains why lean burn is not the "silver bullet" it at first appears to be. It should not be taken to mean that there is anything wrong with engines properly designed to use lean burn.


High Temperature, Pre-Ignition and Detonation Caused by Lean Burn

Normal combustion is never complete; by the phenomenon of thermal equilibrium, there remains an unburned boundary layer of air-fuel mixture insulating the metal components of the combustion chamber from the propagating flame front, that fractal beast of burning air/fuel mixture originating at the spark plug. A dangerously lean air/fuel mixture burns with most efficiency, so much that the insulating boundary layer also gets consumed and the flame front touches the metal walls. At those locations, there is a dramatic rise in temperature, high enough to cause subsequent charges of air and fuel to spontaneously ignite resulting in multiple flame fronts. This is pre-ignition. Preceding each flame front is its sonic pressure wave whose collisions we hear as knocking and pinging. Allowed to persist, colliding sonic pressure waves will concentrate on the irregular shapes present (edges of pistons, valves, even the spark plug) to cause severe damage, just as you could with a hammer in your hand; this is detonation.


Similar Problems with Octane Too Low

Also, using fuel whose octane is too low, that is, fuel with a greater tendency to spontaneously ignite under the heat and pressure of a particular engine, can instigate multiple flame fronts with their usual knocking, pinging, and risk of damage from heat or detonation.


Oxides of Nitrogen Emissions Caused by Lean Burn

In addition to the engine damage problems caused by lean burn, high combustion temperatures and an excess of oxygen cause the formation of oxides of nitrogen. The respiratory problems caused by air pollution are due in large part to these emissions and reducing them is an important goal of environmentally sensitive vehicles. The Honda Insight has special equipment to trap and convert oxides of nitrogen in the exhaust. Even so, with lean burn it is unable to qualify as a SULEV vehicle because of the remaining oxides of nitrogen that cannot be removed.

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Oxides of Nitrogen Emissions Caused by Lean Burn

In addition to the engine damage problems caused by lean burn, high combustion temperatures and an excess of oxygen cause the formation of oxides of nitrogen. The respiratory problems caused by air pollution are due in large part to these emissions.

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http://www.misterfixit.com/deton.htm
http://home.earthlink.net/~graham1/M...s/LeanBurn.htm

These are some interesting effects of a lean burn in a standard engine:

-High Temperature - this causes higher than normal operating temperatures. This can lead of your engine overheating. This WILL also result in your motor oil to degrade quicker than it normally would. This will lead to MORE oil changes ... not less.

-Pre-Ignition - This occurs when a point within the combustion chamber becomes so hot that it becomes a source of ignition and causes the fuel to ignite before the spark plug fires. This, in turn, may contribute to or cause a detonation problem. Instead of the fuel igniting at the right instant to give the crankshaft a smooth kick in the right direction, the fuel ignites prematurely (early) causing a momentarily backlash as the piston tries to turn the crank in the wrong direction. This can be very damaging because of the stresses it creates. It can also localize heat to such an extent that it can partially melt or burn a hole through the top of a piston!

-Detonation - (also called "spark knock") is an erratic form of combustion that can cause head gasket failure as well as other engine damage. Detonation occurs when excessive heat and pressure in the combustion chamber cause the air/fuel mixture to autoignite. This produces multiple flame fronts within the combustion chamber instead of a single flame kernel. When these multiple flames collide, they do so with explosive force that produces a sudden rise in cylinder pressure accompanied by a sharp metallic pinging or knocking noise. The hammer-like shock waves created by detonation subject the head gasket, piston, rings, spark plug and rod bearings to severe overloading.

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http://www.healthgoods.com/Education...evel_ozone.htm

Ground-Level Ozone

Ozone that occurs naturally in the upper atmosphere surrounding the Earth provides a filter for the damaging ultraviolet light emitted by the Sun. At ground level, ozone is harmful to living things. Ground-level ozone is an air pollutant that damages human health, vegetation, and many common materials. It is a key ingredient of urban smog.

Sources

Ground-level ozone is not emitted directly into the air, but rather is formed by gases called oxides of nitrogen (NOx) and volatile organic compounds (VOC), which in the presence of heat and sunlight, react to form ozone. Ground-level ozone forms readily in the atmosphere, usually during hot weather. As a result, it is known as a "summer-time" air pollutant. Emissions of NOx are produced primarily when fossil fuels are burned in motor vehicle engines, power plants, and industrial boilers. There are hundreds of thousands of sources of VOC emissions including automobile emissions, gasoline vapors, chemical solvents, and consumer products like paints.

Health & Environmental Effects

Repeated exposure to ozone pollution for several months may cause permanent structural damage to the lungs. Because ozone pollution usually forms in hot weather, anyone who spends time outdoors in the summer is at risk, particularly children, moderate exercisers, and outdoor workers.

Even when inhaled at very low levels, ground-level ozone triggers a variety of health problems including aggravated asthma, reduced lung capacity, and increased susceptibility to respiratory illnesses like pneumonia and bronchitis.

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http://www.splitfire.com/instrument_functions.htm

A vacuum meter is used to monitor the amount of negative pressure (suction) in the intake manifold. A vacuum meter reading is used to diagnose a variety of engine problems, from a blown head gasket to worn valve guides. It also can be used to monitor fuel economy, with high vacuum readings indicating good fuel economy and low vacuum readings indicating poor fuel economy.