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2. Active Fuel Management - Wikipedia

   en.wikipedia.org/wiki/Active_Fuel_Management

   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.

3. Torque converter - Wikipedia

   en.wikipedia.org/wiki/Torque_converter

   The transmission fluid will quickly overheat, not to mention the repeated impacts on the stator clutch (next topic). Also, overheating transmission fluid causes it to lose viscosity and damage the transmission. Such abuse can in rare cases cause the torque converter to leak and eventually stop functioning due to lack of fluid.

4. Fuel saving device - Wikipedia

   en.wikipedia.org/wiki/Fuel_saving_device

   These may improve fuel economy because the engine runs slightly lean as a consequence. However, running leaner than the manufacturer intended can cause overheating, piston damage, loss of maximum power and poor emissions (e.g., higher NOx due to higher combustion temperatures, or, if misfiring occurs, greater hydrocarbon emissions).

5. Kenworth T680 Advantage Package Designed to Maximize Fuel ...

   www.aol.com/news/2013-03-20-kenworth-t680...

   For premium support please call: 800-290-4726 more ways to reach us

6. Energy-efficient driving - Wikipedia

   en.wikipedia.org/wiki/Energy-efficient_driving

   Fuel economy at various driving speeds. Maintaining an efficient speed is an important factor in fuel efficiency. [9] [10] Optimal efficiency can be expected while cruising at a steady speed and with the transmission in the highest gear (see Choice of gear, below). The optimal speed varies with the type of vehicle, although it is usually ...

7. Automatic transmission - Wikipedia

   en.wikipedia.org/wiki/Automatic_transmission

   Also around this time, whale oil was removed from the automatic transmission fluid. [31] During the 1980s, automatic transmissions with four gear ratios became increasingly common, [32] and many were equipped with lock-up torque convertors in order to improve fuel economy.

8. GM inks multibillion-dollar deal for synthetic battery ...

   www.aol.com/gm-inks-multibillion-dollar-deal...

   “This project will help advance our battery technology and drive greater value to our customers,” Jeff Morrison, GM's senior vice president of global purchasing and supply chain, said in a ...

9. Fuel efficiency - Wikipedia

   en.wikipedia.org/wiki/Fuel_efficiency

   The displayed fuel economy is 18.1 km/L (5.5 L/100 km; 43 mpg ‑US). A Briggs and Stratton Flyer from 1916. Originally an experiment in creating a fuel-saving automobile in the United States, the vehicle weighed only 135 lb (61.2 kg) and was an adaptation of a small gasoline engine originally designed to power a bicycle. [12]