The Six Stroke Engine > Theory
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WELCOME BACK TO: THE SIX STROKE ENGINE - THEORY PAGE 15 FEB 2011
As you may know; my website has been off line and mute since early 2008, postings on the Theory Page including my latest inventions and findings will soon re-commence as we progress forward towards finite analysis and testing.
Meanwhile, please note that the below posted graphs & commentary is of many years ago and does not include discoveries, inventions, or revelations emerging of recent years.
NEW ARTICLE - 17/05/2007 - Malcolm Beare writes on the subject of Swept Volume and how it relates to the Beare Head Six Stroke engine design. You can download the article by clicking here.
The Six stroke Beare Head simply replaces the conventional Four Stroke Engines Cylinder Head. The manufacturers Four Stroke bottom end remains unchanged. The Beare Head utilises an Overhead short stroke Crankshaft and Piston arrangement which opens and closes Inlet and Exhaust Ports leading through the Upper Cylinder Liner. The Beare Head Technology can be fitted to new production engines or retro-fitted via aftermarket replacement.
The top and bottom Crankshaft are connected via a drive chain or toothed belt. The top Crankshaft and Piston become positive power contributors to the overall power output, thus increasing the amount of power/torque generated by up to a possible 35%, in essence, The Beare Dual Opposed Piston Six Stroke Engine results in having Two Pistons Operating and producing power within each cylinder. The absence of parasitic CAMS, valves, springs, retainers and guides; all up about 45 dependant and power absorbing driven components, mean that the Beare Engines bottom end has been freed up from labouring and is allowed to spin up producing more power. The additional torque and power further generated by the Top Piston/Crank of the Beare Cylinder Head is then channeled via the connecting drive chain to the Bottom Crank. The net result of the Beare Dual Opposed Piston Engine, is Tractor type pulling torque never before realised from a Four Stroke Internal Combustion Engine, the sort of steady locomotive type performance gained can only be likened to Steam Locomotives or Diesel Engines.
The net result is:
- Power/torque increases of 35% (conservative)
- Simpler and less expensive manufacturing and tooling
- Reduction of cylinder head reciprocating parts
- Lower maintenance costs due to less wearing parts (Beare cylinder head)
- Longer service intervals possible due to lower operating temperatures recorded
- Increased economy due to the Beare Head's ability to operate and produce full operating power of much higher AIR to FUEL ratios
- Reduction of exhaust emmissions due to less fuel being consumed and the real prospect of meeting EURO-4 emmssions standards, doing away with the catalytic convertor
- Possible one piece engine block and head casting, saving more manufacturing costs
Usable torque at as low as idle means suitability for lower RPM operation and adaptation to CVT (Constantly Variable Transmission)
The benefits of the Beare Head Six Stroke cylinder head are countless. Our planet and our living environment are under Green House Emissions threat, our future and that of our children can certainly benefit from the fuel savings, engine size reduction, & emission reductions this Dual Opposed Piston Beare Engine Technology has proven to deliver, all of the additional environmental benefits promised by the simplicity of production, reduction of wearing parts, and the countless other benefits are a real bonus to our currently stressed resources.
This page is graphics intensive and contains a number of charts which, although abbreviated for the web, will take some time to load.
The originals are available as a zipped Excel file here. (371k)
Click here for a dicsusion on the Theory.
Torque Angle predictions
Volume Angle Diagrams
Pressure Volume Diagrams
Torque Angle Diagrams