The Infiniti Emerge uses split axle hybrid technology The Honda NSX has a split axle hybrid powertrain Mercedes E-Cell SLS dual motor electric drivetrain High performance hybrid / electric examples: Mercedes SLS AMG E-Cell Expect to see hybrid systems appearing in many more high-performance cars as the technology improves. The challenge for manufacturers is to overcome the weight disadvantages associated with the high output battery packs required for these products. When applied correctly, this can help fill the flat spots in a conventional engine’s power curve and improve relative performance.
#PARALLEL HYBRID VEHICLES FULL#
As the technology has advanced, the idea of hybrid sports cars has become more appealing due to the fact that electric motors have the benefit full torque available immediately.
To satisfy the traditional sports car owner, most high-performance hybrids will maintain conventional power at the rear axle to deliver a sporty feel and top speed performance, so the natural use of the electric motor will be to contribute at the front. high performance hybrid supercarsĪ new generation of hybrid supercars are now emerging – a strategy primarily driven by tough new emissions legislation applied both to road cars and in racing.
Some examples of the application of dual high performance electric motors are shown below. Battery bank The dual motor technology shown as an example in Diagram 2 is more complex and expensive to produce, and is only likely to be realised in higher performance hybrids or electric vehicles. Electric motor (or dual motors in this case) D. Most hybrid supercars use this layout, usually with the engine driven wheels at the rear.ĭiagram 2: Electric motor powered front axle, combustion engine powered rear wheelsĪ. Dual inboard motors, with computer controlled variable speed control (shown in diagram 2 below)Īdvantages of the split layout include the ability to power all four wheels simultaneously, to reduce packaging complexity, and to use a larger engine / motor combination.A single motor and differential to split the drive to both wheels.Hybrids with a dedicated electric axle have a number of potential layouts: The second natural method of creating a hybrid powertrain is to split the electric motor and the engine by axle. Examples of integrated hybrid cars: Honda Hybrids Pioneers of the technology include Toyota and Honda. Battery bank Integrated hybrid technology is often used for the more affordable end of the market due to the relative simplicity and user friendliness of these systems. Power is provided by a bank of batteries, which is recharged by making use of excess powertrain energy (such as when slowing down, coasting or braking).ĭiagram 1: Integrated hybrid (front wheel drive)Ī. Early hybrids were exclusively petrol due to the relatively quick and easy engine start associated with this fuel, but diesel hybrids are likely to become more common in future as this issue is tackled. A ‘start-stop’ feature is usually employed on the main engine, and this allows maximum efficiency when driving in city conditions. The motor usually kicks in when pulling away or when an extra burst of acceleration is required. The electric element of the powertrain assists the engine when required but is not essential for progress to be made. Fully integratedįully integrated hybrids combine conventional engine and electric motor outputs into a single source. To gain maximum efficiency benefits, the challenge for designers is to ensure that the electric motor can contribute when the greatest benefits can be realised. If a car contains both a combustion engine and electric motor, it is unlikely that the electric power will be used as their dominant source of propulsion for high speed cruising. Reduced top speed versus combustion powered equivalents.Complex synchronisation is required between motor and engine.More expensive than an efficient petrol or diesel option.All the efficiency benefits of electric propulsion without a compromised range.Allows larger engine / motor variants to be used.A number of different options exist, and this article attempts to simplify the technology and highlight the differences between modern hybrid systems. Hybrid vehicles attempt to strike a balance between the more versatile combustion engine and the more economical electric motor.
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