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The fuel efficiency of a hybrid vehicle can also be improved by optimised tuning of the engine and transmission, for example: Atkinson Cycleįull hybrids most often use the “Atkinson Cycle”. Hybrid vehicles also often include engine management systems which allow the engine to drive the electric motor/generator in certain portions of the drive cycle where it can most efficiently do so – thus charging the battery. Miles per gallon (MPG) figures can be noticeably improved by removing engine idling from a journey. There are numerous different types of stop-start system, which we will not go into in this article, but essentially a stop-start system automatically shuts the engine off every time the vehicle stops (for example, at the traffic lights) and restarts it instantly when the accelerator pedal is pressed.
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Without such a system this kinetic energy would be lost – mainly in the form of heat as the brake pads of the car heat up due to friction of the brake pad on the brake disc.
#PARALLEL HYBRID VEHICLE PPT FULL#
The smaller batteries in full and mild hybrids can be recharged in a number of different ways: Regenerative Braking It is not efficient for the combustion engine to fully recharge the battery on the go. The size of the battery varies depending on how much the vehicle is designed to depend on it, and the way in which the battery is recharged depends on the size of the battery.įor example, a plug-in hybrid can partially recharge whilst a car is being driven but usually needs to be plugged into the mains in order to fully recharge its large battery. Roberto Fedeli, Ferrari’s technical directorĪs mentioned above, to power the electric portion of a hybrid engine, a hybrid vehicle must carry a battery. “We wanted to use the hybrid technology to boost performances, like in F1, rather than use it just to reduce fuel consumption and emissions” These high performance cars use their electric motors to maximise performance, rather than maximise their efficiency and eco-friendliness. This is because the electric motor is more efficient than a combustion engine and produces no emissions.Īn exception to such a goal may be the La Ferrari, McLaren P1 and Porsche 918. Harmful emissions are reduced and the fuel efficiency of the car increases. The goal of a hybrid is to use the electric portion of the drivetrain as much as possible without compromising performance. The three types of hybrid all share features in order to work.
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The two different power sources are typically petrol and electricity (most common in the US) and diesel and electricity (which can be found in Europe). What is a hybrid?Ĭommonly called hybrid electric vehicles (HEV), as the definition above suggests, a hybrid car is simply one that relies on two different power sources for motion. This brief article explains exactly what is meant by a “hybrid”, the different types of hybrid vehicle available and some of the technologies involved. Hybrid cars are becoming more and more prevalent and here at AA Thornton we handle patent applications directed to the wide range of technology involved. Hybrid noun A thing made by combining two different elements.