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Future of mobility is one of the most interesting of our time. The key question: How can the energy consumption of cars will be reduced if all stops were removed to be effective? There is now an answer to this question, and Volkswagen is delivered in the form of the new Concept Volkswagen XL1. Combined consumption: 0.9 l/100 km. No other hybrid car powered by an electric motor / combustion engine the most efficient mix of fuel. Conceptually, the XL1 Volkswagen is the third step in the evolution of Volkswagen's strategy in a liter. With the new XL1 Volkswagen is implementing a concept plug-in hybrids are more fuel-efficient technologies in the common rail turbodiesel engine (TDI) and dual-clutch transmission (DSG). TDI produces its maximum effect at 35 kW/48 hp 0.8-liter engine only. The set is housed hybrid above the rear axle car driving. The real hybrid module with an electric motor and the clutch is placed between TDI and 7-speed DSG, this module is integrated into the DSG gearbox, instead of the usual wheel.
The lithium-ion battery provides E-motor with energy. The flow of energy at high voltage and the battery or the E-motor controlled by power electronics that operate at 220 volts. Volkswagen XL1 body electrical system is supplied with the necessary 12 volts via a DC / DC converter. E-motor Interaction and TDI: The electric motor is accelerating TDI (stimulant), but as described can also feed the XL1 concept itself for a distance of 35 km. In this mode, the TDI is decoupled from the driveline to disengage the clutch, and closes. Meanwhile, the clutch on the side of the gearbox is kept closed, so the DSG is fully committed to the electric motor. Important: The driver can choose to drive the Volkswagen XL1 in pure electric mode (if the battery is charged). Once the mode button on the electrical panel is pressed, the car is powered solely by electricity. Restarting the IDA is a very soft and comfortable: In what is known as "pulse start" while driving TDI engine, the rotor of the electric motor accelerates, and is coupled to the clutch motor. This speeds up the TDI at the required speed and starts.
The entire process takes place without any shocks, so that the driver hardly notices the TDI engine restart. When the XL1 is braked, the electric motor acts as a generator that uses the energy of braking to recharge the battery (renewal). In certain operating conditions, the load is divided in the TDI engine and an electric motor can be moved so that the diesel has the lowest efficiency. Fishing gear is automatically transferred to 7-speed DSG is also always be chosen to minimize power consumption. The motor controller regulates the flow of all energy and disk management tasks, taking into account the power demand at any time by the pilot. Some of the parameters used to implement the state power to provide optimal conditions are: accelerator pedal position and engine load as well as energy supply and mix of commercial energy and electricity at any given time. The two-cylinder TDI used in the mass production of technology: 0.8-liter TDI (35 kW/48 hp) came from the 1.6-liter TDI, which is to drive cars like the Golf and Passat.
0.8 TDI has the same information as the 1.6-liter TDI common-rail distance between the cylinders (88 mm) diameter cylinder (79.5 mm) and stroke (80.5 mm). In addition, the concept of a twin-cylinder Volkswagen XL1 and mass-produced four-cylinder engine uses an internal action to reduce emissions. They are particularly piston recesses multiple injections and single injection in the direction of individual projects. Excellent, good engines, common-rail operation was moved to a two-cylinder engine. In addition to the balance within the room that controls the speed of rotation of the engine, while optimizing the engine is running smooth. Meanwhile, the aluminum of the TDI was built for rigidity and accuracy, which in turn leads to very low friction loss. With the aim of reducing emissions, recycling of exhaust gases and an oxidation catalyst and diesel particulate filter is used. Equipped in this way, the 0.8 TDI already complies with the limits of the Euro-6 emissions standard. Designed for the efficiency of the cooling system of the car.
