Vehicle Grade LP Motor Fuel Additive Summary

PRO 2000-E (TM)x vehicle grade motor fuel additive is specifically formulated to prevent fuel system deposit formation and to dissolve existing deposits. In liquid or vapor injected LPG fuel delivery systems, deposits develop inside of injectors causing fuel injector failure. Pro 2000-E prevents injector failures and deposit formation on intake manifolds, intake valves, metering orifices and combustion chambers.

All commercially available LPG contains olefins, other unsaturated molecules and other contaminants. Because of the reactive double bond in these olefin and unsaturated molecules, they can react with each other to form long chain polymers of various molecular weights. Other molecules that contain polar groups with such atoms as sulfur, oxygen and nitrogen also can also react with these molecules. Since LPG is a poor solvent for high molecular weight compounds and polar molecules, those deposit prone molecules tend to separate out of the fuel and accumulate inside of fuel systems. The resulting residues are commonly referred to as "heavy ends". Bell Additives has demonstrated that an efficient and cost effective way to deal with residue problems is to prevent deposit formation by facilitating their removal as they are formed. These predominantly olefin based deposits have high boiling points and can only be transported in an aerosol state. This can be accomplished by adding a surface-active molecule to the LPG that dissolves the deposit. What then happens as the fuel expands is that the turbulent flow of the gaseous fuel facilitates the transport of residues in the aerosol state where the particles are then carried along with the gas stream into the combustion chamber.

The photos on the right represent LPG liquid phase injector needle tips. The deposits are most prevalent from the sealing band area and across the surfaces exposed to the intake manifold. The leakage prone areas are identifiable by observing the dark ridge visible at the outer edge of the deposit formation. Fuel flow can also be affected when deposits protrude into the passage between the needle valve and the seat.

The photo on the left shows a clean liquid injector-metering orifice. The photo on the right shows an accumulation of deposits on the metering orifice. Fuel injector metering orifice deposits can affect fuel flow rate and lead to deteriorating fuel control affecting emission performance. Additionally, cylinder to cylinder air/fuel ratios can be affected by the presence of metering orifice deposits.

These photos show fuel filter contamination. The filter on the left shows moderate but undesirable deposit buildup. The filter on the right collapsed due to excessive supply pressure caused by deposit buildup.