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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.
The Camaro Performance V8 concept is a black Camaro SS with Chevrolet Performance ZL1 rear differential kit, 5.1-ratio short-throw shifter, shock tower brace with white Camaro graphic, Camaro 1LE suspension kit, Camaro ZL1 brake conversion kit, concept dual-mode exhaust system, Camaro ZL1 rockers and rear lower diffuser, Camaro Dusk front ...
Operating cycle for a four-stroke engine Operation of a flat-twin engine Operation of a straight-four engine. Although some components within the engine (such as the connecting rods) have complex motions, all motions can be separated into reciprocating and rotating components, which assists in the analysis of imbalances.
While based on the Camaro ZL1, regulations preventing the use of superchargers meant the naturally-aspirated LT1 6.2 liter V8 from the Camaro SS instead of the ZL1's LT4 supercharged V8 was used in the racing car featuring direct fuel injection, a carbon fiber intake, a custom camshaft, a Motec data acquisition system and a Bosch MS6 ECU.
Positive displacement superchargers deliver an almost constant level of boost pressure increase at all engine speeds, while dynamic superchargers cause the boost pressure to rise exponentially with engine speed (above a certain threshold). [4] Another family of supercharger, albeit rarely used, is the pressure wave supercharger.
The Northstar engine is a family of high-performance 90° V engines produced by General Motors between 1993 and 2011. Regarded as GM's most technically complex engine, the original double overhead cam, four valve per cylinder, aluminum block/aluminum head V8 design was developed by Oldsmobile R&D, [citation needed] but is most associated with Cadillac's Northstar series.
A mechanically driven supercharger offers exceptional response and low-rpm performance, as it does not rely on pressurization of the exhaust manifold (assuming that it is a positive-displacement design, such as a Roots-type or twin-screw, as opposed to a centrifugal supercharger, which does not provide substantial boost in the lower rpm range), but is less efficient than a turbocharger due to ...
Pumped air injection systems use a vane pump called the air pump, AIR pump, or colloquially "smog pump" turned by the engine via a belt or electric motor.The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system.