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New Engine will Improve 50% Combustion Efficiency.

作者:网站管理员 来源:本站原创 日期:2016/3/26 15:40:01 点击:3273 属于:新闻中心

VOA news: Opposed-piston, two-stroke engine developed by a US engine company will improve 50% combustion efficiency.

 

This littel engine looks like it has only three pistons, but in fact, it has six, sharing only three cylinders. With the help of modern technology California-based Achates Power has given new life to the concept of the opposed-piston engine, mostly abandoned after the second World War.

 

With the opposed-piston engine, you’re able to achieve the efficiency of a much larger engine in a much smaller package.

 

An opposed-piston engine is a two-stroke engine with separate oil flow. It has no cylinder heads and no valves, both sources of considerable loss of heat and power in conventional combustion engines.

 

Two pistons move against each other in the cylinder, compressing a fuel-air mixture, which self-ignites, pushing the pistons apart, generating power. Exhaust gases escape through ports in the cylinder walls. Stripped of many conventional engine parts, the opposed-piston engine is inexpensive and simple to manufacture.

 

We make sure that we do not over scavenge and achieve a very good combustion efficiency, so that hydro mitro-carbons and the emissions are reduced to a great extend.

 

Larger opposed-piston engines have long been used for military and other applications.

But developing them for consumer vehicles was not easy.

 

This combustion strategy has some difficulties and weaknesses at low loads, becuase it needs a certain level of temperature inside the combustion chamber to make sure that the gasoline gets ignited.

 

Achated Power, together with Argonne National Laboratory and Delphi Automotive, say they are sure they will overcome the obstacles, and by 2018 will have a 50 percent more effective three-liter three-cylinder engine that will be suitable for passenger cars and trucks.

 

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