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Skyactiv
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Skyactiv
Skyactiv (styled SKYACTIV) is a brand name for a series of automobile technologies developed by Mazda to increase fuel efficiency and engine output. The initial announcement of the Skyactiv technologies included new engines, but has grown to include transmissions, as well as complete vehicle platforms, which have appeared in Mazda vehicles from 2011 onwards.
The precursor of Skyactiv, which featured a Mazda Sky-G 2.3-liter gasoline direct injection engine, a Mazda Sky-D 2.2-liter diesel engine, a Sky-Drive automatic transmission, a Mazda Kiyora with Sky-G 1.3 engine and Sky-Drive automatic transmission, was unveiled at the 40th Tokyo Motor Show in 2008. The Skyactiv concept features a revised suspension geometry, improved automatic and manual transmission, and various improvements to Mazda's L- engine such as direct injection, upgraded exhaust manifold, increased compression ratio for cleaner burn and higher thermal efficiency, among other improvements. Mazda's previous chassis for the Mazda3 and Mazda6 were carried over to the new vehicles.
The Skyactiv-G is a family of gasoline engines (the "G" suffix indicates gasoline) featuring gasoline direct injection and high compression ratios. Engines in the family have a compression ratio of up to 14: , except in the United States where it is 13:1 to allow the use of regular gasoline; the lower compression reduces torque and fuel economy by 3 to 5 percent. To suppress engine knock at high compression, residual gas is reduced using a 4-2-1 exhaust system, optimized piston cavities, and fuel injection control.[citation needed] Combustion duration is shortened by increasing airflow, raising injection pressure, and using multi-hole injectors.[citation needed]
Skyactiv-G engines use all-aluminum construction with chain-driven dual overhead camshafts, variable valve timing, and meet U.S. ULEV emission standards.[citation needed]
The Skyactiv-G 1.3 (engine code P3-VPS) is a 1,298 cc (79.2 cu in) naturally aspirated, inline-four engine with a 71 mm (2.8 in) bore and a 82 mm (3.2 in) stroke. It was unveiled at the 2011 Automotive Engineering Exposition.
Five Mazda engineers were awarded the 2011 Japan Society of Mechanical Engineers Medal on 20 April 2012 for their work on this engine.
It was first used in the Mazda Demio/Mazda2, the only Skyactiv engine paired with a CVT. The engine produces 62 kilowatts (83 hp) of power and 113 newton-metres (83 lbf⋅ft) of torque.
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Skyactiv
Skyactiv (styled SKYACTIV) is a brand name for a series of automobile technologies developed by Mazda to increase fuel efficiency and engine output. The initial announcement of the Skyactiv technologies included new engines, but has grown to include transmissions, as well as complete vehicle platforms, which have appeared in Mazda vehicles from 2011 onwards.
The precursor of Skyactiv, which featured a Mazda Sky-G 2.3-liter gasoline direct injection engine, a Mazda Sky-D 2.2-liter diesel engine, a Sky-Drive automatic transmission, a Mazda Kiyora with Sky-G 1.3 engine and Sky-Drive automatic transmission, was unveiled at the 40th Tokyo Motor Show in 2008. The Skyactiv concept features a revised suspension geometry, improved automatic and manual transmission, and various improvements to Mazda's L- engine such as direct injection, upgraded exhaust manifold, increased compression ratio for cleaner burn and higher thermal efficiency, among other improvements. Mazda's previous chassis for the Mazda3 and Mazda6 were carried over to the new vehicles.
The Skyactiv-G is a family of gasoline engines (the "G" suffix indicates gasoline) featuring gasoline direct injection and high compression ratios. Engines in the family have a compression ratio of up to 14: , except in the United States where it is 13:1 to allow the use of regular gasoline; the lower compression reduces torque and fuel economy by 3 to 5 percent. To suppress engine knock at high compression, residual gas is reduced using a 4-2-1 exhaust system, optimized piston cavities, and fuel injection control.[citation needed] Combustion duration is shortened by increasing airflow, raising injection pressure, and using multi-hole injectors.[citation needed]
Skyactiv-G engines use all-aluminum construction with chain-driven dual overhead camshafts, variable valve timing, and meet U.S. ULEV emission standards.[citation needed]
The Skyactiv-G 1.3 (engine code P3-VPS) is a 1,298 cc (79.2 cu in) naturally aspirated, inline-four engine with a 71 mm (2.8 in) bore and a 82 mm (3.2 in) stroke. It was unveiled at the 2011 Automotive Engineering Exposition.
Five Mazda engineers were awarded the 2011 Japan Society of Mechanical Engineers Medal on 20 April 2012 for their work on this engine.
It was first used in the Mazda Demio/Mazda2, the only Skyactiv engine paired with a CVT. The engine produces 62 kilowatts (83 hp) of power and 113 newton-metres (83 lbf⋅ft) of torque.
Applications: