As part of a larger sustainability initiative entitled Zoom-Zoom 2030, Mazda recently unveiled their new SKYACTIV-X next-generation engine. According to the company, the SKYACTIV-X is the world's first commercial gasoline engine to use compression ignition, in which the fuel-air mixture ignites spontaneously when compressed by the piston.
This translates to less reliance on a spark plug, and the mechanical and fuel-related inefficiencies it brings, to start the vehicle. Spark plugs would only be needed under certain conditions, such as at low temperatures.
In addition to the unique capabilities of the new engine is the fact that a prominent automotive OEM is making an announcement about a gasoline engine. The company made headlines earlier this week in announcing a partnership with Toyota focused on a new U.S. plant that will, amongst other things, focus on new electric vehicles.
The Sustainable Zoom-Zoom 2030 campaign has several focuses, ranging from customer experience to environmental concerns to driver and passenger safety. Chief among these goals is a desire to reduce carbon dioxide emissions to 50 percent of 2010 levels by 2030, and achieve a 90-percent reduction by 2050.
The SKYACTIV-X engine could play a role in helping control emissions due to its more efficient mechanical properties. The proprietary combustion method, called Spark Controlled Compression Ignition, looks to maximize the space in which compression ignition is possible and provide a smoother transition between compression ignition and spark ignition. Compression ignition could produce a leaner fuel combustion process that, according to Mazda, would improve engine efficiency by up 30 percent.
This includes meshing the efficiency and power of a diesel engine with the environmental and acceleration capabilities of its gas counterpart. Additionally, using compression ignition and a supercharger could further improve fuel economy and deliver a quicker engine response with more torque.
Mazda plans to start incorporating the engine into its 2020 model year cars. The company has no plans to supply the engine to other carmakers.