Ultra-efficient hybrid engine runs on natural gas and diesel

Researchers at ETH Zurich have developed an internal combustion engine that emits less than half the CO2 compared to a regular engine without compromising performance. This corresponds to fuel consumption of less than 2.4l per 100km. This natural gas-diesel hybrid engine is based on a system of sophisticated control engineering. ETH researchers redesigned the conventional diesel engine of a VW Golf to run on 90% natural gas. Instead of a spark plug as is standard with natural gas engines, the engine is ignited with a small amount of diesel injected directly into the cylinder. In doing so, the researchers were able to achieve a highly efficient combustion with a maximum efficiency of 39.6%.

Read more: http://www.ethlife.ethz.ch/archive_ar...

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