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Active Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors.It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy.
Honda J35A 3.5L V6 SOHC i-VTEC Variable Cylinder Management(VCM) Engine on 2008 Honda Inspire. Variable Cylinder Management (VCM) is Honda's term for its variable displacement technology, which saves fuel by using the i-VTEC system to disable one bank of cylinders during specific driving conditions—for example, highway driving. The second ...
This Cadillac would essentially have had two 3.6L High Feature V6s attached crankshaft-to-crankshaft and would have featured high-end technologies including direct injection and cylinder deactivation. If this engine were developed, it would have displaced 7.2 liters, and produced approximately 600 hp (447 kW; 608 PS) and 540 lb⋅ft (732 N⋅m ...
In 2012 Volkswagen introduced Active Cylinder Technology (ACT), the first manufacturer to do so in four-cylinder engines. [19] In November 2016 Ford announced its compact three-cylinder Ecoboost engine with deactivation on one of the cylinders. This is the smallest engine so far to use deactivation, and will allow the benefits to be applied in ...
The Cadillac High Technology Engine was a V8 engine produced by the Cadillac division of General Motors from 1982 to 1995.. While the High Technology engine was being developed, due to higher Corporate Average Fuel Economy standards being phased in by the United States government, Cadillac introduced a variant of their traditional V8 engine with the first usage of cylinder deactivation for ...
While cylinder deactivation would make a comeback some 20 years later with modern computing power (and using oil pressure to deactivate the valves by collapsing the lifters), Cadillac's 1981 V8-6-4 proved to have insurmountable engineering problems. The main issue was that the engine control module simply lacked the robustness, programming and ...
The Pentastar engine was introduced at the 2009 New York Auto Show. [2] [3] The engine design allows the use of E85 or 87 octane fuel and features dual variable valve timing. Forced induction, and cylinder deactivation options were engineered into the engine design, but have not been implemented from the factory, remaining "on the shelf" as of ...
Turbocharged, direct gasoline-injected inline four-cylinder engine with Ti-VCT Displacement 1,999 cc (2 L; 122 cu in) Bore 87.5 mm (3.4 in) Stroke 83.1 mm (3.3 in) Compression ratio 9.3:1 Valve gear DOHC with four valves per cylinder, Ti-VCT Cylinder head DOHC Gravity die-cast aluminum alloy with sintered valve guides and seats Cylinder block
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