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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.
All include direct injection, cylinder deactivation, and continuously variable valve timing, either in V6 form of 4.3L or V8 form of either 5.3L or 6.2L. The trademark ECOTEC has also been used on Opel automobiles which are powered by the following engines produced by PSA PowerTrain:
V6 3.5: 3.41 in (86.7 mm) V6 3.0: 3.39 in (86 mm) ... The reason given is: Updated gen 2 Fox with reversed head flow and cylinder deactivation should be in a new section.
The Gen IV LS9 is a supercharged 6,162 cc (6.2 L; 376.0 cu in) engine, based on the LS3; the LS7 block was not used because of the higher cylinder pressures created by the supercharger requiring the thicker cylinder walls of the LS3. It has a bore and stroke of 103.25 mm × 92 mm (4.065 in × 3.622 in).
Highway mileage was improved from 19 mpg ‑US (12 L/100 km; 23 mpg ‑imp) to 21 to 22 mpg ‑US (11 to 11 L/100 km; 25 to 26 mpg ‑imp) with the addition of Active Fuel Management cylinder deactivation. For 2009, the 6.2 L engine in the Yukon Denali got a power increase to 403 hp (301 kW), while a 395 hp (295 kW) 6.2L was added as an option ...
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 ...
An evolution of the 1964 DOHC prototype “XJ13” engine, the Jaguar V12 engine is a family of SOHC internal combustion V12 engines with a common block design, that were mass-produced by Jaguar Cars for a quarter of a century, from 1971 to 1997, mostly as 5.3‑litres, but later also as 6‑litres, and 7‑litre versions that were deployed in racing.
The primary passage contains the injector for the cylinder, and introduces the air tangentially to the cylinder for maximum swirl. The secondary passage contains an intake manifold runner control (IMRC) deactivation valve which opens for high speed and wide-open throttle (WOT) situations to provide a minimally restricted path for additional air ...