Constructional
Details
The
sketches shows the cylinder head equipped with both chambers and four valves of
which two are conventional (intake and exhaust). The two others are made of
heavy-duty heat-resisting material. During the combustion and the air heating
processes, the valves could open under the pressure within the chambers. To
avoid this, a piston is installed on both valve shafts which compensate this
pressure. Being a six-stroke cycle, the camshaft speed in one third of the
crankshaft speed.
Multifuel
Multifuel
par excellence, it can use the most varied fuels, of any origin (fossil or
vegetable), from diesel to L.P.G. or animal grease. The difference in
inflammability or antiknock rating does not present any problem in combustion.
Abstract
The increasing demands for low
emissions and low fuel consumption in modern combustion engines requires
improved methods for combustion process. The Beare Head is a new type of
six-stroke engine head design known as the “Beare Head” after its designer,
Malcolm Beare. The Beare Head uses a piston and ports very much like a two
stroke engine to replace the overhead valve system that is found in four stroke
engines today. The four-stroke block, piston and crankshaft remain unaltered.
This combination of two stroke and four-stroke technology has given the
technology its name the “six stroke engine”.
Introduction
The
majority of the actual internal combustion engines, operating on different
cycles have one common feature, combustion occurring in the cylinder after each
compression, resulting in gas expansion that acts directly on the piston (work)
and limited to 180 degrees of crankshaft angel.
According
to its mechanical design, the six-stroke engine with external and internal
combustion and double flow is similar to the actual internal reciprocating
combustion engine. However, it differentiates itself entirely, due to its
thermodynamic cycle and a modified cylinder head with two supplementary
chambers: Combustion, does not occur within the cylinder but in the supplementary
combustion chamber, does not act immediately on the piston, and it’s duration
is independent from the 180 degrees of crankshaft rotation that occurs during
the expansion of the combustion gases (work).
Conclusion
There
is, at this day, no wonder solution for the replacement of the internal
combustion engine. Only improvements of the current technology can help it
progress within reasonable time and financial limits. The six-stroke engine
fits perfectly into this view. It’s adoption by the automobile industry would
have a tremendous impact on the environment and world economy, assuming up to
40% reduction in fuel consumption and 60% to 90% in polluting emissions,
depending on the type of the fuel being used.
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