Welcome! My name is Mike Brickley. I am the designer of the Brickley engine. My hope in placing this information on the web is that we might all benefit from the gains resulting from the use of this technology: lowered CO2 emissions and a significant improvement in fuel efficiency. The Brickley engine configuration is projected to improve fuel mileage 15-20%. CO2 emissions are cut as well by 15-20%. This accomplishment is made through reducing engine friction: turning energy normally lost in heat into useful work. With petroleum prices increasing and global warming on the rise, there is an urgent need for us to provide a more efficient, less polluting internal combustion engine.

The Configuration

By changing how the pistons connect to each other and how they connect to the crankshaft, a great deal of friction can be eliminated . The configuration employs a combination of pinned linkages to determine the paths of the pistons to within a few thousandths of an inch of linearity, and thus basically eliminates the need for piston skirts. It connects the pistons efficiently to each other and to the crankshaft at a fraction of the losses incurred in a typical configuration. The top end of the engine remains basically the same and uses the technology available in current engines.

Reducing engine friction improves fuel mileage significantly

Engine friction plays an important role in determining fuel mileage. For example, an engine may have a mechanical efficiency of about 85% at full throttle. That means 15% is lost to friction. Let’s say an engine produces 85 hp at full throttle. This would mean that although 100 hp is available, 15 hp is lost to friction in the form of heat. If just 10% of the horsepower lost to friction (1.5 hp) was able to be turned into usable work, we would now be producing 86.5 hp. So to produce 85 hp now, we would be using 1.7% less fuel. While this does not seem like much at full throttle, a more sizable improvement occurs at part throttle where automobile engines operate most of the time. Since engine friction is less dependent on load than other factors, the majority of that 1.5 hp saved happens throughout a wide range of engine outputs. Therefore, at one quarter throttle (21 hp) that 1.5 hp might amount to 6.8% less fuel used (4x1.7).

The Brickley engine configuration can eliminate over 35% of engine friction

One way to show how much of an improvement is possible is to compare the Brickley engine configuration to a typical four cylinder engine. If one were to take the various components of engine friction: crankshaft, connecting rods, camshaft, piston rings, piston skirts, and the engine accessories and determine how much each would be affected by changing to the Brickley design, then one can see how much of an improvement is possible.

Research attributes the following approximate amounts to the various components: crankshaft 18%, connecting rods 15%, accessories 10%, camshaft 15%, piston rings 21%, piston skirts 21%. Being that the number of crankshaft bearings is reduced from 5 to 2, without changing the unit load on each bearing, an elimination of 3 bearings would allow for an elimination of 11%[(3/5)(18)] off the total friction. Actually, the unit load on the two remaining bearings is less since the mechanism provides a way of allowing the other three cylinders to take their work needed before the remaining amount is delivered to the crankshaft. Similarly, the connecting rods are reduced from 4 to just one. This accounts for the elimination of another 11% [(3/4)(15)]. As well, the piston skirt friction will be significantly reduced. The mechanism eliminates another 15% [(.75)(21)].

While the roles of the camshaft, piston rings, and the accessories remain unchanged the overall elimination of 37% (11+11+15) of the total engine friction is possible. This reduction would amount to a 14.8% - 22.2 % improvement in fuel mileage using the general rule that a 4% –6 % improvement in fuel mileage is possible for every 10% reduction in total engine friction with the engine operating at ¼ throttle.

Licensing the patent

See the contact page if you would like to contact the inventor or are interested in licensing the patent.