Geneva Motor Show: Lotus Evora 414E Hybrid

Article by Christian Andrei, on February 28, 2010

This is the Lotus Evora 414E Hybrid, a new car that made its debut today at the Geneva Motor Show which aims to demonstrate how a hybrid car can have breathtaking performance from a highly efficient propulsion system.

The new 414E Hybrid uses a high performance drivetrain system consisting of twin motors each delivering 204 hp (152 kW or 207 ps this inspired the name 414E) and 400 Nm (295 lbft) of torque to each wheel via independent, single speed, reduction transmissions. With these numbers the car can accelerate from 0 to 60 mph in just 4.0 seconds.

The new car can be charged via a typical household plug or the car's onboard generator. An additional range is provided by the Lotus Range Extender engine, an optimized 1.2 litre, three-cylinder engine capable to deliver (48 ps/47 hp). The Lotus Evora 414E Hybrid has a total range of 480 km (300 miles) and can be driven as a fully-electric car for about 56 km or 35 miles.

Also, the car features HALOsonic Internal and External Electronic Sound Synthesis technologies from Lotus and Harman International, which means that it will provide sound contouring within the cabin and improve pedestrian safety outside the vehicle.

The car comes with a sports mode that can simulate a 7 speed, paddle shift transmission combining exceptional driver involvement for a hybrid sports car.

Lotus acknowledges that the automotive industry needs to meet new environmental issues. That’s why it is taking a step in the right direction as innovation plays an important part in its process. The brand has been in the lead when it comes to automotive technologies whether it involves designing engines, incorporating new technologies, or modifying energy sources.

Lotus has even been testing the limits when it comes to building new types of cars like hybrids or electric cars. The company has long accepted that lighter vehicles are more efficient and even cleaner. This fact has become even more appropriate in the world today. As such, the company continues to develop even further its bonding techniques and utilization of aluminium.

Consequently, consumers should expect to see a wide selection of production cars to be released in the next years. The company is also studying how to create lightweight structural composites to be used for higher volume applications.

A significant element of the company’s research activity is the use of sustainable materials. Lotus is also looking into having a more comprehensive understanding of how the life cycle of transport technologies will affect the environment.

Press Release

Lotus Evora 414E Hybrid Concept

The Lotus Evora 414E Hybrid Concept showcases new developments in plug-in, range-extended electric propulsion, new electronic technologies to enhance driver involvement, the adaptability of the Lotus Versatile Vehicle Architecture (VVA) that underpins the Evora 414E Hybrid and a dramatic new roof system and interior concept from Lotus Design.


Lotus Engineering has developed a highly efficient, high performance drivetrain system consisting of twin motors each limited to providing 152 kW (207 PS) of power and 400 Nm (295 lb/ft) of torque to each wheel via independent, single speed, reduction transmissions integrated into a single housing, enabling torque vectoring dynamic control of the vehicle (the capacity to generate different torques at each of the driving wheels), this is particularly suited to electric vehicles and significantly reduces the conflict between stability and response.

The Evora 414E Hybrid provides less of a psychological step change for people familiar with high performance cars compared to other electric and hybrid sports cars. The car has a simulated paddle shift gear change offering ultra quick gear changes reminiscent of a dual clutch transmission.

This enhances the driver interaction with the vehicle and provides a driving experience similar to current internal combustion engine high performance sports cars. The Evora 414E Hybrid uses a column mounted paddle shift to simulate the gear change and a synthesised engine sound changes frequency with virtual gear selection. The drive torque is also modulated to simulate a physical feeling of a gearshift jolt. The virtual gearshift simulation, like a conventional gearbox, is used to change the driving characteristics and response of the vehicle.

The most significant aspect that this offers the driver is the ability to control the vehicle deceleration by simulating engine braking through a virtual downshift in gears. Unlike true engine braking, the Lotus system does not dissipate the energy of the moving vehicle through internal engine friction but uses the electric motors to regenerate the energy back into the battery. While many electric and hybrid vehicles provide engine braking, this is generally at a fixed rate or pre-selected rate. In some driving situations this can either be too aggressive, slowing the vehicle unnecessarily, or too light, requiring additional braking application.

The Lotus system effectively allows the driver to select the appropriate level of regeneration by simulating stepping down by one, two or even three gears. The simulation of engine braking through both the gear noise change and the retardation of the vehicle is fully intuitive to a driver familiar with a conventional gearbox. The simulated gear change capability can be selected for greater driving involvement or switched off for more relaxed driving.


The vehicle energy storage system is made up of the latest Lithium Polymer battery chemistry providing 14.4 kWh energy storage capacity. The battery pack is optimised for energy density, efficiency and high power demand, with over 300 kW discharge capability. For everyday commuting journeys, up to 35 miles can be travelled using battery power. The battery can be charged overnight using a conventional domestic mains supply through a socket concealed by the rear number plate. This permits the vehicle to operate with zero tailpipe emissions. For longer journeys, exceeding the battery capacity, the highly efficient Lotus Range Extender engine is used as a generator to supply the motor with electrical power and top up the battery.

The cutaway hybrid Evora 414Evolution exhibit demonstrates Lotus Engineering’s technical expertise in: lightweight architectures, efficient performance, driving dynamics and electrical and electronic integration. The new intelligent HALOsonic system is displayed in the cutaway hybrid Evora 414Evolution exhibit along with the supercharged Lotus Range Extender.

The system on this latest version of HALOsonic , a collaboration between HARMAN and Lotus uses a single camera to determine the distance, trajectory and speed of pedestrians and other road users, calculating the risk of collision by comparing this information with the car’s path. The new HALOsonic system uses this data to actively control the volume of the External Sound Synthesis to warn pedestrians of the vehicle’s location, thereby improving pedestrian safety and reducing noise pollution. Under certain conditions the system will generate an audible and visual warning for the driver using the Internal Sound Synthesis and instrument panel.

The new active system is optimised to operate in urban environments where there is the greatest risk of a collision with a pedestrian. It is calibrated to actively control the volume and pitch of the sound synthesised while the vehicle is travelling from 0-75 km/h, continually evaluating the risk of a pedestrian collision and operating in an area up to 60 metres ahead of the vehicle. All of the HALOsonic systems are designed to use low levels of power and with the new active version there will be less power consumed as the system will only increase the volume when there is a risk of an impact.

Governments around the world have acknowledged the increased risk posed by almost silent vehicles and are in the process of drawing up legislation to compel car manufacturers to equip vehicles with pedestrian warning systems like the HALOsonic system.

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