Land Rover Diesel ERAD Hybrid The second key technology of the …

12 Июн 2014 | Author: | Комментарии к записи Land Rover Diesel ERAD Hybrid The second key technology of the … отключены
Land Rover HYBRID

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Land Diesel ERAD Hybrid

At the Motor Show in July, Rover has introduced a system on the prototype vehicle diesel Hybrids to substantially reduce CO2 while maintaining the traditional performance, the highlight of the mark. testing on Freelander 2, it will all models in the range. Several that reduce emissions and economy are under consideration, them the Stop-Start system be available as standard from on Freelander 2 diesel manual

The Diesel ERAD Hybrid and TECHNOLOGIES

The prototype hybrid engine Land Rover are under technical testing and road

They are designed a clean and efficient diesel — it is one of the first diesel vehicle programs in the world

prototypes make use of new technologies which: the ERAD (Electric Axle Drive or electric rear axle), which to give them the legendary Rover road capabilities, the (Integrated Crank Starter a starter-generator mounted on the motor the Lithium Ion battery pack for a new

A hybrid modular and scalable in of size, designed to be used on models of engines and the Land range

A search through the between Land Rover and the for control of British Energy, the Saving Trust

A proprietary which is one of many developments by Land Rover, which are under the generic name of TECHNOLOGIES

Land Rover are currently conducting road with the prototypes of these vehicles Diesel ERAD The purpose of these vehicles is to considerably the emissions of CO2 and other while maintaining the performance of all-terrain Land Rover. The are tested on Freelander 2 modified, but eur design can evolve in terms of they may therefore one day equip the range of models and powertrains to Land Rover.

This is part of a range of research by Land Rover’s sustainable These programs are grouped the common name of e_TERRAIN

Diesel ERAD Hybrids Land Rover is also on several projects for reducing and fuel economy. Their will meet on the range now and well into the next These projects include the Stop-Start system shutdown and restart of the engine — will be available as standard next year on all Freelander 2 models with manual — as well as advanced systems and new architectures for lightweight

We unveiled the innovative technology of the during the presentation of the LRX concept car this year, says Popham, the Managing Director of Rover. We keep our commitments to development from now to full-scale on prototype drivers. The Diesel Hybrids represent a crucial for Land Rover.

This is a real enforcement of concepts and shows that the can be by combining our capabilities legendary TECHNOLOGIES e_TERRAIN these

Introduction of Diesel Hybrid

The diesel engine Land ERAD Hybrid was developed as of a research project with a of several million pounds, funded by the Energy Saving namely the control of the agency UK. The goal is to create a hybrid of parallel type propulsion with 4×4 off-road. The hybrid can run either on electricity or by vehicles, or with both simultaneously.

This system is to reduce CO2 emissions by over 20% in driving cycle and 30% in real of urban use, the domain of for hybrids.

Under certain the hybrid gasoline / electric manage to be slightly more than the best non-hybrid Thus, the Range Rover is to produce a hybrid system on a diesel powertrain modern, and prop afin make the of both technologies. To achieve Land Rover has developed the an exclusive system of electric mounted on the rear axle.

The may even provide more in of cross-road.

The most important of ERAD is its ability to propel a Rover on its own, a feature to reduce emissions in urban Although ERAD is mounted on the axle, it can transmit power to the wheels through the transmission thereby propelling the vehicle’s

The second key technology of the Diesel Hybrid is the CISG, that is to a starter-generator mounted integrated shaft. It equips the new Freelander 2 testing turbocharged four-cylinder The CISG is a powerful electric On the prototype, it is connected to a dual transmission.

The CISG uses engine and produces an additional is relayed to the transmission, but it also as a starter for the diesel engine.

The engine, the CISG and ERAD to create a hybrid. Depending on conditions, using either the of diesel or electricity, an optimal of both. The management mode of is confined in a sophisticated power Furthermore, the ERAD and the CISG can be to recover kinetic energy regenerative braking.

When energy that would dissipated as heat is recovered to the battery pack special

This pack, which approximately the size of a spare is housed in the trunk. This Ion battery technology. They energy for the CISG and store generated during regenerative operation. These batteries are than nickel-metal hydride typically used in other production.

Their technology them to both store energy but also to recharge

Others include pump power steering, another intended to save energy. conventional pumps consume continuously, it can supply the system when necessary.

Integration Terrain Response

The Diesel Hybrid uses what may as the next generation of Terrain a Land Rover’s award-winning. feature allows the driver to full advantage of hybrid while enjoying unrivaled off-road. The prototypes have different programming methods Response: Eco, Dynamic, / Gravel / Snow, Mud and Ruts,

The Eco mode is the mode most in normal driving cycle. It is for normal and allows the vehicle to use or electric power depending on conditions. This mode is for urban travel at low speeds. are made without any emission engine is automatically muted.

The then propels the vehicle through the rear axle. The acceleration and flexible add to refinement of while regenerative braking kinetic energy.


On an open road, constant the stresses and power requirements of the hybrid are moderate. Diesel is now in his It transmits its power to the front and the electronic engine management to the consumption greater frugality, low CO2 emissions.

The four-wheel drive is at all times, ready to fire if the warrant.

When overtaking, or the driver wants to have performance, the two engines work to produce maximum power and The recovery function of the braking is available.

Mode Grass / / Snow

This program is to maximize traction while the torque transmitted to the wheels to slippage and wastage of energy. The car on electric propulsion alone, the being distributed by the ERAD on wheels. The diesel is triggered when it became necessary.

The use of propulsion allows a very determination of torque and provides traction as well as reduced CO2

Mud and Ruts mode

Depending on input, there are two options for mode. The first option is a low and starting to electricity only. The diesel remains available at any

The alternative uses of diesel assisted by the electric motor to power and torque more we obtain a good adhesion and a power reserve available at any

This mode is a setting power well suited to surface energy loss as the soft sand. The ERAD then add its power to that of the engine, which achieves an higher torque than the engine alone.

The Diesel Hybrid technology in the spotlight

The — powered by electric axle

The electric propulsion for the rear axle ERAD is developed by Land Rover. Son is to allow a hybrid vehicle to the demanding specifications of the company’s

The ERAD is mounted on the rear It uses a powerful brushless motor (brushless) 288 volts, can a power of 25 kW continuous and 35 kW peak. The torque is a robust 200 Nm As the laws of suggest, this torque is instantly, upon turning on the

It is therefore the ideal in terms of for off-road at low speed.

The electric drives the rear wheels a gearbox with a 8:1 ratio and an differential. The Haldex coupling is to the ERAD decouples the front and axles for use in front wheel only, then the power transmitted to the front by the driveshaft. If the is closed mode electric alone, the torque generated by the is transmitted to all four wheels.

An oil powered by a separate electric cools the internal organs of the

The ERAD can also recover during regenerative braking. An module makes it possible for a motor to operate as an electric This mode locks the driver lifts his foot and he braking.

This powerful is transformed into an excellent and it uses the energy of deceleration to the Lithium Ion battery. In four-wheel the recovery of energy during is maximum even on slippery and without compromising adhesion.

used off-road, the ERAD does not add that, if necessary, and as the torque is maximum at a standstill, solution provides even control at low speeds and better to get out of a bad situation (like on the packed or wet grass) or tow.

On the road, the can run slowly until 30 km / h, by using electric power, he can count on the starter generator (Integrated ISG ) to restart the engine automatically it becomes useful. From time, electric power to assist the mechanical drive the engine running at its ideal with a double advantage: the consumption and emissions C02.

Another advantage of the ISG is that it stops the engine when the is stopped at a red light or in traffic, prevents him from running for and restarts smoothly, quickly it is needed again.

The electric runs on energy stored in a pack of lithium-ion high-voltage and capacity, totally independent of the supply by a 12 volt battery. pack is recharged continuously by a of transformation of energy released braking, which also through the ERAD system.

LRX comes with hill control (Hill Descent HDC) and Terrain Response, Rover-exclusive that optimizes and comfort, while maximizing On LRX, there are five settings, including an all new ‘Eco’: for the road, this setting all the vehicle parameters to reduce consumption. The other four Terrain Response modes are (also new) ‘current ‘sand’ and ‘grass / gravel / (a single program for all those surfaces)

The CISG — mounted on the motor shaft

The is the other brushless electric fitted to the prototype Land hybrid. As its name suggests, it as a starter motor and starts the engine when it is appropriate, in situations of automatic stop-and-Stop-Start. But the can also act as an electric generator.

Land Rover HYBRID

system, which is integrated the dual clutch gear can even be used to provide electrical power, thereby gas emissions.

The Stop-Start system may be simple, its effectiveness in reducing is not as great. At idle, rather letting it idle, it stops it.

As of this strategy for stopping-restarting, the uses the most sophisticated and most reliable currently His great speed allows it the engine in four tenths of a while consuming passing fuel than a conventional Like the ERAD, the CISG is used to recover kinetic during regenerative braking.

the driver lifts his foot, the switches to generator and recharges the while propulsion while the vehicle.

The Lithium Ion battery

The battery pack of high is also one of the key components of a hybrid It is he who provides power electric and can store energy recovered deceleration. Almost all existing use battery type nickel hydride (NiMH), and if the technology without classical problem to power quickly, it is however not efficient in terms of rapid

It is therefore poorly suited to the of regenerative braking.

New technology Lithium Ion (Li Ion) is lighter, more efficient and better energy density. It can absorb rapid refills by regenerative braking and provide power when the driver Land Rover is working in with specialized equipment to a special battery, called

These batteries are not prone to effect; factor even interesting, they do not contain or heavy metals and do not use nickel. resorting to extraction of minerals, technology is more environmentally

In some ways, these new behave a bit like supercapacitors they absorb and recreate the very quickly, which regenerative braking technology really works. Lithium NanoTitanate of Diesel Hybrid produce 288 Volts. They can energy for quick refills and twelve times more than an equivalent NiMH

Their specific energy is to say, their power to ratio) is 2500 W / kg against W / kg for NiMH batteries, an improvement of A Lithium Ion battery weighs 32 kg a against 60 for a NiMH, or a weight of 47%. The amount of usable stored in a Lithium NanoTitanate per is 36Wh/kg against 13.5 Wh / kg for a an improvement of 267%.

The electric system is separated from the vehicle electrical system, remains, he, at 12 volts. The latter is by a DC circuit connected to the propulsion.

inverters are water-cooled rear-mounted and under the hood. They the DC current stored in lithium ion into alternating current for the two electric motors.

The inverter before the starter-generator CISG and the one at the rear fuels ERAD. The also includes a rear dc that transforms 288 volts of pack 12-volt electrical for the generation

System of vehicle

The brain of Diesel Hybrid actually coexists with the computer which manages the Response modes. Depending on input and vehicle movement, system dynamically determines the application of power diesel, or combined. This control is working symbiosis with Response, which allocates its to the couple on four wheels and maximum efficiency regardless of conditions.

The conventional power systems use energy continuously, the engine is running. By using an pump can be used by cons more wisely, only necessary. The Electro-Hydraulic Power and can help achieve fuel of almost 2%.


The ERAD Hybrid is not that one of the undertaken by Land Rover in the of its environmental policy. The company has set a target in the years to come, more sustainable technologies and reduce emissions: all these commitments is generally referred to by TECHNOLOGIES e_TERRAIN. An impressive of 700 million pounds has been to sustainable technologies by Jaguar and Rover.

Land Rover engineers are on advanced engine technologies and structures that allow the to achieve the highest levels of CO2 in its sector. However, this is by no the first sacrificial capacity Land Rover on all-terrain and of the future may actually see their increase with new powertrains, as ERAD.

The first technologies under TECHNOLOGIES e_TERRAIN appear on models on sale in We discover first a Freelander 2 manual transmission equipped the Stop-Start.

The action plan of the in reducing CO2 emissions, however beyond this horizon. Rover has joined the Strategic for the UK Government Technology (CST) afi n to the green technologies of tomorrow. The TSB and Ministry have announced participation to 16 development projects a total budget of 52 million

The British state will in 23 million to this research as part of its Program Innovation for Emissions in Low Carbon. The challenge of program is indeed to develop new of engines and two promising of these are very similar work on currently being undertaken by Rover.

In addition to technologies are already being assessed practical prototype diesel Erad Land Rover, new will be developed within ten under the venire e_TERRAIN

The Stop-Start feature, which be fitted as standard on all Freelander 2 models with manual from 2009

A technology of regenerative braking

The starter-generator (BISG), a micro-hybrid technology

The Management System of the Power (IPSM), which minimizes the energy used by the vehicle

The flywheel, another innovative that improves performance and consumption and CO2 emissions

The lightweight architectures and optimized vehicle

Vehicles Hybrid Series

Land Rover HYBRID
Land Rover HYBRID
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Land Rover HYBRID
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