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DC-DC converter reclaims wasted hybrid energy
A consortium led by motorsport specialist Prodrive is developing a DC-DC converter for hybrid and electric vehicles. It is being designed to be more efficient, smaller and lower cost than those currently available. |
01/11/2007
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Laser remelting strengthens pistons
Diesel engine design has taken a further step forward with a new generation of aluminium-based piston materials combined with a laser technology for configuring the piston bowl lip, accoring to Kolbenschmidt Pierburg. |
01/10/2007
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Show and tell
Europe’s biggest car show takes place in Frankfurt from 13 to 23 September. We look beyond the gloss of the show cars and concepts to preview some of the technologies that will be on display |
01/09/2007
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Hybridising a brand
Porsche is one of the strongest brands in the automotive sector, so how does it go about adopting hybrid technology without affecting driver perceptions? Ian Adcock took a ride in its Cayenne hybrid to find out |
01/09/2007
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Drop-in’ module transforms hybrid drives
In a development that must rate as one of the finest examples of technology integration seen this year, ZF has designed an electric motor module into its new eight-speed automatic gearbox using only the space normally occupied by the torque converter, writes Roger Bishop. |
01/09/2007
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Burning questions
Pressure is mounting on engine designers to increase specific power output, deal with emissions and make their products burn a wider range of fuels. They are responding to the challenge with a range of materials, gas control techniques and fuel strategies. Jeff Daniels reports |
01/02/2007
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Diesel hybrid has a ‘software’ gearbox
Software and control techniques replace clutches and gears in a new type of high-efficiency diesel hybrid drivetrain, writes Roger Bishop. Developed by a UK automotive engineering consultancy, it is said to be highly cost-effective compared with current systems and can be quickly implemented within the constraints of a compact European passenger car. |
01/02/2007
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Heavy on the electricity
In the second of two articles, Jeff Danilels looks at ‘heavy hybrids’ and finds the US market picking up for petrol-electric vehicles while Europe looks to the longer term with plans to combine the benefits of diesel and electric motors to provide spectacular fuel efficiency |
01/09/2006
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Silent running
The diesel V8 for the Range Rover was designed to beat its big rivals from BMW and Mercedes for torque and power, and its designers say it also has class leading NVH properties. Ian Adcock describes the development process |
01/06/2006
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Small benefits
Hybrid electric vehicles are starting to proliferate, at least in terms of models available – it has yet to be seen whether the public will buy them in significant number. In the first of two articles, Jeff Daniels explains micro and mild systems |
01/06/2006
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Optocoupler designed for hybrids
Avago Technologies’ high-speed optocoupler has been designed specifically to meet the performance requirements of the automotive market, especially for hybrid electric vehicles. Systems in these vehicles will require isolation in the electrical systems to prevent unwanted interference and provide reliable operation. |
01/06/2006
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Special tubing is key to fuel cell humidifier
As fuel cell technology develops, the need for efficient fuel cell humidification has increased.For demanding automotive applications, Perma Pure has introduced the FC-400 high pressure fuel cell humidifier.Part of the company’s FC series, it provides durable, self-contained humidification in a package that withstands the temperature, corrosion and high operating pressures of automotive fuel cells. |
01/06/2006
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Hot compression ratio changes with engine running
A system for varying the compression ratio of an engine while running has been developed in France, writes David Scott. This allows performance to be optimised according to speed and load, and enhances more complete combustion of the fuel mixture with benefits to economy and emissions. |
01/02/2006
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Powertrain priorities
For all the publicity surrounding hybrids and the fledgling hydrogen economy, powertrains are still firmly rooted in traditional technologies. However, that does not mean any lack of interesting developments, as Jeff Daniels reports |
01/04/2005
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Tracton drive turns motors inside out for more torque
At the end of March a hybrid-powered bus, Whisper 2, made its public debut in the town of Apeldoorn in the Netherlands. On board, writes Roger Bishop, was a group of civic dignitaries and a remarkable new traction technology that almost literally turns electric motor design inside out. |
01/04/2005
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Driving ingenuity
Michelin Challenge Bibendum has gained a reputation over the past seven years for showcasing alternative propulsion technologies. 2004’s event in Shanghai revealed how manufacturers are turning towards ingenious combinations of technologies.
Jesse Crosse reports
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01/01/2005
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High efficiency TFM drives set to transform hybrids
Voith Turbo has been working on transverse flux motor (TFM) technology for electric drivelines for some time. These activities have focused on a special form of permanent-excitation synchronous machines that are supplied with energy by inverters. |
01/11/2004
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Sprinter prototype gets a hybrid drive
DaimlerChrysler’s prototype hybrid Sprinter van has a 70kW electrical driveline from ZF Sachs that allows it to run emissions-free for up to 30km and provides fuel savings of between 10 and 50 per cent, depending on the driving cycle. |
01/11/2004
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Power play
Tom Shelley and Roger Bishop look at three developments in electric motor technology that will interest R&D engineers involved in the design of both current and future generations of vehicles |
01/09/2004
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GoEngine set to deliver its promise
A prototype of the fuel-saving Gomecsys GoEngine variable compression ratio concept now looks very likely, writes Roger Bishop, thanks to an evaluation programme aimed at delivering a production-representative design. |
01/06/2004
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