A practical approach to realtime computer graphics the morgan kaufmann series in interactive 3d technology eberly, david h. As an automobile is driven, the equivalence ratio and intake pressure vary with the engine load. Opposed pistonopposedcylinder opoc engine is the most exciting new type of internal combustion engines. Car industry technology ecomotors opoc engine goauto. Jul 14, 2010 the patented opoc twostroke engine using opposed pistons in a modular boxer cylinder layout is the brainchild of peter hofbauer, former head of powertrain development at volkswagen ag and now chairman and chief technology officer of detroitbased ecomotors international. Generac is a large manufacturer of backup power generators for home. The combustion of fuel such as coal, petrol, diesel generates heat. Ecomotors opoc two stroke engines opposed piston opposed cylinder.
Otto built the first practical fourstroke internal combustion engine called the otto cycle engine, and as soon as he had. The powertoweight ratio for this engine is around 1. The result is a far greater power output than a traditional engine of comparable size. Apr 11, 2011 goes right along with the headline new gasoline engine design has 4x efficiency of pistons when matched against the text which says promises to be five times more efficient than traditional auto engines hey, its just a computer model. Gnrc this week to jointly develop fuelefficient, backup power generators. Ive not found a step by step guide to engine design out there are detailed design considerations for each part of an engine could be a book in itself. Jan 03, 2019 these engines are generally used in automobile industries to power cars. According to the company the twostroke engine is up to 50 percent more efficient than most vehicle engines and pollutes far less than a conventional twostroke engine. Design a fourcylinder internal combustion engine academicae. Read online now engine design book ebook pdf at our library. Pdf thermodynamic simulation comparison of opposed two.
Modern graphics engine features high polygon count for added visual complexity not just to make things smoother some form of bump mapping for more surface detail from singlelight dot3 to general diffuse specular aniso perpixel lighting some form of shadows from simple blobby discs under characters to full shadow map or shadow volume. As hofbauer put it, in a conventional engine the pistons and connecting rods fight with the crankshaft. The engine had one crankshaft and is very similar in concept to the ecomotors opoc engine design, except using a camshaft and valves. Trade secrets opposed piston opposed cylinder motor. Ecomotors reinvents the internal combustion engine nanalyze. Many products that you buy can be obtained using instruction manuals. Reinventing the internal combustion engine bill gates. In 2010, ecomotors said it could get four times the power from an opoc twostroke engine as a fourstroke engine of the same mass. An opoc engine weighs far less and is much more compact than a conventional engine, and it has about half as many components. Dec 04, 2016 a company called an ecomotor developing the new engine named as opposedpistonopposedcylinder engine. Ecomotors patented engine design creates a groundbreaking internal combustion engine family architecture that will operate on a number of different fuels, including gasoline, diesel, natural gas and ethanol. Ecomotors and generac developing fuelefficient, backup.
Reshaping the future, with students from art center and ccs is exemplifying just what could be possible. If this engine is able to deliver 100 miles per gallon in a passenger car, as its developers hope it will, it will be a great success. To explore the interrelation of this special crank system in concept design stage, the multibody dynamics and durability of the pistonopposed crankshaft system was investigated. Otto built the first practical fourstroke internal combustion engine called the otto cycle engine, and as soon as he had completed his engine, he built it into a motorcycle. Jan 30, 2018 radical new engines make a run at reality in the f150. Perhaps, most notably, ecomotors is planning on releasing an opposed piston, opposed cylinder engine in the near future primarily for use in automobiles. Jun 16, 2011 ecomotors struck a parntership with generac nyse.
Achates highly efficient opposed piston engine is set to find a home in the ford. This engine configuration is the basis for the ecomotors paradigm. I wrote a dissertation on an engine related project and am now trying to begin a career in the automotive industry. The closedcycle performance of the engine configurations is compared using a custom. Modular displacement capability ecomotors patented engine design creates a groundbreaking internal. To this extent a design competition, ecomotors design challenge. Which is copied from an idea from a continental aero engines design in the 1990s a 2 stroke design. Mar 02, 2017 to explore the interrelation of this special crank system in concept design stage, the multibody dynamics and durability of the pistonopposed crankshaft system was investigated. As of year 2000, in the united states alone there are about 200 million motor vehicles powered by internal combustion engines. Get engine design book pdf file for free from our online library pdf file. Ecomotors engine design uses 50 percent fewer parts, which means they are lighter and smaller than a conventional engine. Two stroke engines are favorites of everyone who wants a really compact engine with lots of power, there are fewer parts and power delivery on every stroke. Design of an opposedpiston, opposedstroke diesel engine for.
Ecomotors opoc two stroke engines opposed piston opposed. The opoc engine is an opposedpiston opposedcylinder, 2stroke engine. When more power is needed the second engine is clutched in. This is due to the principal characteristic of the twostroke engine having a power stroke for every revolution of the crankshaft. Mar, 2014 efficient engine maker ecomotors buys a u. Goes right along with the headline new gasoline engine design has 4x efficiency of pistons when matched against the text which says promises to be five times more efficient than traditional auto engines hey, its just a computer model. After years of false starts in green engine claims, the opoc engine just may be the real mccoy. Intellectual property acquisition opportunity ecomotors.
Analysis and design of a lightweight high specific power. Amazingly, an opoc engine produces power twice as often every other stroke, rather. The design is just what it says, as you can see above, with 2 cylinders and 4 pistons. Adding to the designs elegance is the arrangement and movement of its pistons. In the case of internal combustion engine, the combustion of fuel takes place inside the engine cylinder itself. Key to the design is an electrically controlled clutch, which disengages a module when necessary. This heat is supplied to a working substance at high temperature. The opposed cylinder design has two cylinders, one on each side of the crankshaft, each with two pistons, for mechanical balance. Radical new engines make a run at reality in the f150 cnet. Design a fourcylinder internal combustion engine project.
The basic design of the fourstroke piston engine has been kicking around for about 150 years. A company called an ecomotor developing the new engine named as opposedpistonopposedcylinder engine. The engine had one crankshaft and is very similar in concept to the ecomotors opoc engine design, except using a camshaft and valves, and not in opposedcylinder configuration. The opoc engine can be moduled with two, or more, engines coupled via an electric clutch between engines. The thread was popular, and some of the discussion diverged to the subject of prof.
Judging by the results i would say anything and everything. Ecomotors claims to have solved many of these problems with their prototype model em100, opoc engine which produces 325 horsepower and 664 poundsfeet of torque, yet weighs only 296 pounds. Internal combustion engine handbook basics, components, systems, and perspectives list of chapters. Design of an opposedpiston, opposedstroke diesel engine. Firstly the optimized function model of the unique crankshaft system in an op2s opposedpiston two stroke engine was established. Pdf todays technology leveraging allows op2s opposed piston 2stroke engine to be considered as an. China to build ecomotors efficient opposedpiston engines. Opposed piston and opposed cylinder engine courtesy. One of the most important landmarks in engine design comes from nicolaus august otto who in 1876 invented an effective gas motor.
At this speed, each stroke in the cycle takes place in 20 ms. Additionally, ecomotors attracted the attention of some of the larger us engine manufacturers and developed partnerships in china for both lower cost manufacturing and access to the chinese auto market. The opoc engine efficiency and simplicity should also make it durable, saving owners maintenance cost in the longterm. Opoc the new, green engine attracting star support. The engine, which the company claims is in its sixth generation.
To spur car companies into action, ecomotors is showcasing how this can impact and revolutionize styling. Like the ecomotors opoc and the scuderi, pairs of pistons operate together to provide the. An internal combustion engine can be categorized on many bases, for instance, type of ignition, number of strokes, design, and so on. This engine configuration is the basis for the ecomotors paradigm an alternative to todays traditional internal combustion engine. Threedimensional piston ringcylinder bore contact modeling. A practical approach to realtime computer graphics the morgan kaufmann series in interactive 3d technology. Ems patented opoc design is a groundbreaking internal combustion engine family that. The analysis and design of a lightweight twostroke 6sided inplane polygon engine having a.
In particular, the piston ring to cylinder bore contact force distribution around the circumference of the piston rings must be optimized under all running conditions. Jul 25, 2016 the engine had one crankshaft and is very similar in concept to the ecomotors opoc engine design, except using a camshaft and valves. Used cars for sale in wybunbury eco motors are a second hand car dealer based in wybunbury, cheshire. The patented opoc twostroke engine using opposed pistons in a modular boxer cylinder layout is the brainchild of peter hofbauer, former head of powertrain development at volkswagen ag and now chairman and chief technology officer of detroitbased ecomotors international. Analysis and design of a lightweight high specific power two. Amazingly, an opoc engine produces power twice as often every other stroke, rather than every fourth stroke. A heat engine can also be distinguished as an external combustion engine, where combustion of fuel takes place in an external source. In opposedpiston engines op pistons are arranged in such a way that two. Now, a small company called ecomotors is proposing a radical overhaul for this centuryold workhorse. Modular displacement capability ecomotors patented engine design creates a ground. To accomplish this, the ring manufacturers make the ring curvature nonconstant along the.
Ecomotors opposedpiston engine to be built in china. In ecomotors they have the funds, they have the publicity every time a guy in ecomotors coughs, every magazine in the world publishes or reproduces an article for opoc, they have the support only the name of bill gates opens every door. Apr 11, 20 ecomotors opposedpiston engine to be built in china. Development and experimental investigation of a two. Ecomotors has a design called opoc, opposed piston opposed cylinder. Mar 05, 2014 in ecomotors they have the funds, they have the publicity every time a guy in ecomotors coughs, every magazine in the world publishes or reproduces an article for opoc, they have the support only the name of bill gates opens every door. Aug 04, 2010 5 ways to redesign the internal combustion engine.
How to improve the internal combustion engine popular mechanics. Ecomotors and generac developing fuelefficient, backup power. The opocs new opposed pistonopposed cylinder direct gas exchange operation provides the well known. Only time will tell if this new opoc engine will fulfill the potential it seems to offer. Pdf modernizing the opposed piston, two stroke engine for. Ecomotors international, a startup based in troy, michigan. Radical new engines make a run at reality in the f150. In 1903 a gobronbrillie car powered by the opposed piston engine was the first car ever to reach 100 mph.
Over the last 100 years, the internal combustion engine has transformed almost every aspect of how people work and live. Design of an opposedpiston, opposedstroke diesel engine for use in utility aircraft. Opposedpiston crankshaft system dynamics simulation and. Pdf opposedpiston op engines were once widely used in ground and.
New gasoline engine design has 4x efficiency of pistons. Two stroke engines are favorites of everyone who wants a really compact engine with lots of power, there are. Books on internal combustion engine design engineeringclicks. Internal combustion engine plays an important role in most of the field from energy production to generate electricity in night market until the production of power for moving a vehicle. One way this was accomplished was by reducing the number of parts. May 02, 2011 the basic design of the fourstroke piston engine has been kicking around for about 150 years. The engine configuration presented herein makes it possible to package a large number of power producing pistons in a small volume, resulting in a powertoweight ratio near 2 hp per pound, which has never before been realized in a production engine. More than a year ago 12 feb 09, paintermanmechanical started a thread 71237389 to address the question of opposed piston engines.