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It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy. Estimated performance on EPA tests shows a 5.5–7.5% improvement in fuel economy. [1] GM's Active Fuel Management [2] technology used a solenoid to deactivate the lifters on selected cylinders of a pushrod V-layout engine.
The LGD 3900 is a flexible-fuel version of the LZ9, and like its 3.5L LZE counterpart, it can run on E85, pure gasoline, or any mixture of the two. This is the last version of the 3900 V6. The LGD was not available with Active Fuel Management. Output is slightly reduced at 230 horsepower at 5700 rpm and 235 lb-ft of torque at 3200 rpm ...
In addition to GM's active fuel management, start-stop system, and variable valve timing, which are already featured on GM's other full-size pickup truck engines, this engine also features GM's Intake Valve Lift Control which has 3 different intake cam profiles that are electromagnetically actuated to provide improved fuel economy and ...
The engine is essentially the same as the LV3, but without Active Fuel Management technology. The LV1 made its debut in the 2018 model year GM full-size vans—the 2018 Chevrolet Express and 2018 GMC Savana—as the successor to the Gen IV 4.8L L20. [86] Applications:
The dual-fuel 235 hp (175 kW; 238 PS) LW2 version was able to run on petrol and autogas. The LW2 engine was based on the low-output LE0 V6. It featured a factory-fitted dual-fuel system developed by IMPCO, different valves, and hardened titanium valve seats. This motor was available exclusively in Holden vehicles from 2005–2012. Applications: [7]
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The Department of Transportation on Friday issued its final fuel economy standards for passenger cars and trucks with model years 2027 and later, the last of three major auto rules from the Biden ...
Optional on most trim levels is the 355-horsepower (265 kW; 360 PS), 5.3-liter EcoTec3 V8 gasoline engine, which is optionally E85 capable, and features either a carryover Active Fuel Management (AFM) system, or a brand-new Dynamic Fuel Management system (DFM), which now can shut off two, three, four, five, or six of eight cylinders.