GMC Sierra Hybrid 2005 Accentuated with GMC Parts from Parts TrainWritten by Jenny McLane
A standard Vortec 5300 5.3-liter V8 engine powers Sierra Hybrid and a 4-speed Hydra-Matic automatic transmission coupled with full-size truck segment’s first hybrid propulsion technology for improved fuel economy. The Sierra hybrid uses electric power even less frequently. Its gasoline engine can shut down when car is stopped (actually, when it's braking to a stop, below 13 mph or so) and-that's it. The batteries (three 14-volt units plus standard 12-volt) cannot power truck at low speeds. Nor do they help out gasoline engine, which therefore can't be any smaller. It's same 5.3-liter V-8 GM pickup buyers know and love. Because of limited nature of this hybrid system, benefits are mild: roughly 2 mpg in city driving and 1 mpg during EPA's highway cycle. The system replaces traditional starter motor and alternator with a compact 14-kw electric induction motor or starter generator integrated between engine and transmission. The starter generator provides fast, quiet starting power and allows gasoline engine to automatically start and stop under certain conditions to conserve fuel. The Sierra Hybrid also offers four 120-volt/20-amp electrical auxiliary power outlets located under rear seat and in pickup bed. Because 5.3-liter V-8 is same as that in non-hybrid pickups, its power and torque outputs are same (295 horsepower, 325 pound-feet of torque). Acceleration, towing, and payload are undiminished. The extra hybrid gear takes up very little space-the biggest component, three extra batteries, is under rear seat. One interesting feature of hybrid trucks are its four, 120-volt 20-amp AC power outlets in cargo bed and rear seat; but engine must be running in order to use them.
| | Volkswagen Touran Hymotion: Fuel Cell Hybrid Vehicle Plus Top Rate VW Replacement PartsWritten by Jenny McLane
Automakers know that rising oil prices and tougher environmental rules will increase public's interest in vehicles that use less fuel with reduced tail pipe emissions.Hybrids increase fuel efficiency by capturing energy normally lost to friction braking and storing it in a battery for later use when driving power is again required. Unlike internal combustion engine hybrids, Volkswagen's hydrogen fuel cell hybrid emits only water. The VW Touran Hymotion has high-torque electric motor that draws its power from a fuel cell and is absolutely emission free. The standard version, driven by petrol and diesel engines, which are as agile as they are economical, is by far most successful van available in Germany. In Touran HyMotion, an 80 kW electric motor provides vehement propulsion. The core element of this fuel cell is an extremely thin plastic film (membrane). This spatially separates reagents, hydrogen and oxygen. The hydrogen is broken down into positively and negatively charged particles (protons and electrons). The protons are able to pass directly through membrane, whilst electrons take a more indirect route via an external current circuit, driving electric motor. On other side of membrane, protons, electrons and oxygen combine to form water.
|
