September 20, 2007
By Susan Garavaglia
General Motors External Communications Manager
Recently, GM demonstrated a fuel-saving engine technology that I think has real potential to reduce our nation’s dependence on oil.
It’s called HCCI, which is shorthand for Homogeneous Charge Compression Ignition engine, and we think it will improve fuel economy, when combined with other advanced fuel savings technologies, by about 15 percent.
With HCCI, a variety of advanced engine technologies combine to allow for lower temperature fuel burning, which is more complete and more efficient and cuts vehicle emissions. It also cuts the amount of heat energy that is lost with traditional combustion. HCCI creates the same level of power as a traditional engine system, but it uses less fuel to create that power.
If you are a diesel fan, this probably sounds really familiar to you. Similar technology has long been used in diesel engines, but this is one of first times it has been brought to the gasoline engine. Now that we have the tools to make this technology real, we’re moving forward as quickly as we can.
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