A fan may be disposed within the upper axial region of the combustion chamber in order to assist the intake of the incoming air, the exhaust of the combustion exhaust products, the mixing of the air fuel mixture components, and the cooling of the combustion chamber, or alternatively, a supplemental flower or fan system, disposed externally of {TAIL ~ the combustion chamber} may be utilized to augment {HEAD ~ the functions} of the fan disposed within the combustion chamber 
A fan may be disposed within the upper axial region of the combustion chamber in order to assist the intake of the incoming air , the exhaust of the combustion exhaust products , the mixing of the air fuel mixture components , and the cooling of the combustion chamber , or alternatively , a supplemental flower or fan system , disposed externally of { TAIL ~ the combustion chamber } may be utilized to augment { HEAD ~ the functions } of the fan disposed within the combustion chamber
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