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A hybrid vehicle has multiple forms of motive power, and can come in many configurations. For example, a hybrid may receive its energy by burning gasoline, but switch between an electric motor and a combustion engine. A typical powertrain includes all of the components used to transform stored potential energy. Powertrains may either use ...
The powertrain consists of the prime mover (e.g. an internal combustion engine and/or one or more traction motors) and the drivetrain - all of the components that convert the prime mover's power into movement of the vehicle (e.g. the transmission, driveshafts, differential and axles); [4] [5] whereas the drivetrain does not include the power ...
The powertrain layout of a motorised vehicle such as a car is often defined by the location of the engine or motors and the drive wheels. Layouts can roughly be divided into three categories: front-wheel drive (FWD), rear-wheel drive (RWD) and four-wheel drive (4WD). Many different combinations of engine location and driven wheels are found in ...
A 6×4 or six-by-four is a vehicle with three axles, with a drivetrain delivering power to two wheel ends on two of them. It is a form of four-wheel drive but not one of all-wheel drive. Classic Truck twin rear axles providing drive via 8 wheels: 6x6 6X6, a standard class of medium-duty trucks Classic Mil spec: 6x6 drive train power to rear and ...
A front-engine, rear-wheel-drive layout (FR), also called Système Panhard [1] [2] [3] is a powertrain layout with an engine in front and rear-wheel-drive, connected via a drive shaft. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the pre-1950s automotive mechanical projects. [4]
For liquid-cooled vehicles, however, this layout presents a disadvantage, since it requires either increased coolant piping from a front-mounted radiator (meaning more weight and complexity), or relocating the radiator(s) to the sides or rear, and adding air ducting to compensate for the lower airflow at the rear of the car.
Several hybrid electric vehicles—such as the Toyota Prius, Nissan Altima, Mitsubishi Outlander PHEV, and Ford Escape Hybrid—use electric variable transmissions (EVTs, sometimes eCVT) to control the contribution of power from the electric motor and the internal combustion engine.
BMW, focused on luxury vehicles, however retained the rear-wheel-drive layout in even their smaller cars, [4] though their MINI marque are FWD. There are four different arrangements for this basic layout, depending on the location of the engine, which is the heaviest component of the drivetrain.