Posts Tagged ‘fuel economy’

Fuel Efficiency

Fuel Efficient Engine Designs (Fisher Cycle)

 

An alternative to the scotch-yoke Bourke design except with simplicity and superior performance.

Fisher uses a patented yoke-arm instead.

Patent No. 7,328,682

Yoke-Arm Technology Substantially Advances Engine Performance

Fisher has developed a modern-day upgrade for piston engines which dramatically improves the performance of all conventional engines for both gasoline and diesel. This unique and cutting edge technology provides substantial increases in fuel economy, significant reductions in exhaust emissions and more power just by adding a “yoke-arm” between the piston rod and power-shaft. A simple mechanical combination, never before developed for piston engines, uses a unique linkage that connects the piston rod to the crankshaft, yet leaves the mechanical arrangement for conventional piston engines relatively unchanged.


This arrangement uses a unique yoke-arm which substantially increases piston dwell
during combustion to significantly increase combustion efficiencies. Surprisingly, this simple modification not only provides large gains in combustion efficiencies, but also greatly decreases piston rod angularity and the associated piston friction. The result is superior fuel economy, increased power and reduced emissions for both conventional crankshaft powered gasoline and diesel engines. Most all conventional engines can be accommodated such as single-cylinder, V-type, in-line, horizontally-opposed and radial with no restrictions to engine size or application.

 

References:

www.fishertechnologies.net

Patent No. 7,328,682

Bourke Engine Documentary

 

Fisher Technologies has developed a modern day upgrade for piston engines which dramatically improves the performance of both the gasoline and diesel engines

“Helps Promote Green Technology”

Yoke-Arm Technology – How it Works

The Fisher “Yoke-Arm” Technology for piston engines provides unprecedented advantages for both the user and manufacturer. You can see the surprising simplicity for such big time benefits with just the addition of a Yoke-Arm.

  • Substantial increases in fuel economy
  • Much lower emissions
  • Significant power increases
  • Less weight and more compact
  • Considerable increases power/weight ratios
  • Lower manufacturing costs for the same power
  • Minimal retooling required for the same power
  • Minimal retooling required for existing product lines

Yoke-Arm Advantages vs. Previous Attempts

Fisher has added a uniquely designed “yoke-arm” between the piston rod and crankshaft which is patent protected, both US & foreign (US patent no. 7,328,682). The yoke-arm is much different than previously tried yoke mechanisms such as, for example, the Bourke scotch yoke or “Bourke-Cycle” as previously discussed. The Fisher yoke-arm (shown below), an important and integral part of this breakthrough technology for piston engines, provides two main advantages over Bourke and conventional engine designs. (1) The increased piston dwell provided by Fisher is well beyond that possible with Bourke’s scotch yoke and associated “harmonic motion” for improving combustion efficiencies, and also well beyond all attempts by others. The Fisher yoke-arm can be designed for more or less dwell depending on the needs of particular applications, which is a severe constraint for the scotch yoke. (2) In addition to increased piston dwell, the added benefit of much less piston friction plus the increased mechanical advantage over conventional engines contribute to superior gains in mechanical efficiencies promoting even higher performance and added fuel economy. As it turns out, there is about a 10% mechanical advantage over the conventional engine piston rod-crank relationship.

Find Out More.

New Engine Technology

We invite everyone to read more about our engine technology and our project at Fisher Technologies.

Our New Technology for Piston Engine offers:

  • Unprecedented fuel economy
  • Diesel engines especially benefit
  • Significant power increases
  • Reduced pollution
  • All piston engines benefactors
  • Only one major component required: a yoke-arm
Yoke-Arm Technology Substantially Advances Engine Performance

Yoke-Arm Technology Substantially Advances Engine Performance

Fisher Technologies has developed a modern day technological upgrade which dramatically improves the performance of conventional piston engines for both gasoline and diesel. This unique and cutting edge technology provides substantial increases in fuel economy, significant reductions in exhaust emissions and more power all just by adding a “yoke-arm” between the piston rod and power-shaft. A simple mechanical combination, never before developed for piston engines, uses a unique linkage that connects the piston rod to the crankshaft, yet leaves the mechanical arrangement for conventional piston engines relatively unchanged.

Yoke-Arm technology increases piston dwell during combustion for high combustion and fuel efficiencies in combination with significant power gains. All with the addition of a single component part, the yoke-arm.

The results are High Fuel Efficiencies, Low Emissions, and Increased Power/Weight Ratios

Read more at fishertechnologies.net