| Rear engine |
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A term that refers to the structure of a vehicle. when the engine is mounted behind the rear axle.
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| Rear wheel drive |
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Vehicles whose rear wheels are those that transmit the engine power to the ground (propulsion). Rear wheel drive allows the position of the engine etc. to be more varied. The most normal is for the engine and the gearbox to be at the front and the differential behind them.
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| Recirculation of exhaust gases |
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This is a device that inserts a part of the exhaust gases into the intake collector. so that the air that enters the cylinders has a smaller percentage of oxygen. In this way the temperature generated in combustion decreases. and with this the emissions of nitrous oxides.
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