Supplier Spotlight

Video Exclusives

Fiat Chrysler electrifies the Ram 1500 truck


Unveiled at the 2018 Detroit auto show, the 2019 Ram 1500 has shed 100kg and added e-torque power. Available with a 5.7-liter Hemi V8 or a second-generation 3.6-liter Pentastar V6 engine, the 1500 uses mild-hybrid capability to recapture energy during deceleration to enable start/stop function as well as short-duration torque addition.

Mercedes-Benz unveils its revamped G-Class


The all-new G-Class makes its public debut at the Detroit auto show in the USA this month in G550 form. Completely redeveloped and fitted with a 4.0-liter V8 biturbo gasoline engine offering 427ps and 450 lb-ft of torque at 2,000rpm to 4,750rpm, despite near-identical looks to its predecessor plenty has changed for the Mercedes-Benz SUV.

Click here/on image to watch video

In light of Fisker's solid-state battery breakthrough and claims of a one minute charge time, will this electric vehicle technology development kick-start mass BEV uptake? 


CPT unveils new stop-start technology

Right: Integrated Starter Generator (B-ISG)

Engineers at Controlled Power Technologies (CPT) have developed the world’s first bespoke belt-driven Integrated Starter Generator (B-ISG) that makes use of a conventional 12-volt electrical system and is capable of starting a 2-liter diesel engine.
CPT’s technical breakthrough has resulted in a unique 12-volt B-ISG with the high torque and power necessary to restart, quickly, smoothly and more frequently, most modern diesel and petrol engines. According to CPT, this means it can offer a more advanced solution to existing stop-start systems, which are all based on modifications to a conventional starter motor or conventional alternator. And it can do so without resorting to the high cost of developing a higher voltage system.
The production ready SpeedStart technology addresses three of the major challenges of existing stop-start systems; it is twice as fast as a conventional starter motor or alternator, the restart is exceptionally quiet and offers excellent refinement, and most importantly it is powerful enough to cope with a driver having a sudden change of mind when the stop-start system is already stopping the engine.
“One of the most challenging situations for a stop-start system occurs when a driver needs to move again at the same moment that a stop sequence has been initiated and the engine is already shutting down. This situation can arise many times at junctions, traffic lights and in crawling traffic. The stop-start system then has to re-crank the engine whilst at the same moment the driver is re-engaging the load of the vehicle mass through the clutch. This requires a high level of torque and power to be delivered almost instantly. To achieve this you need an electrical machine that can draw a high current into its windings. Existing stop-start systems simply cannot react fast enough,” comments Mike Dowsett senior manager for micro-hybrid systems at CPT.
“So long as stop-start technology can meet all the demands expected of it then we can confidently anticipate it becoming a standard fitment on all cars. The environmental feel good factor for motorists is very powerful when a car is stationery in traffic with the engine switched off and there are zero emissions. Yet, the market penetration of existing stop-start systems is only about 5% and even with some forecasters saying this will reach 50% these figures would seem to reflect the limitations of existing technology. The benefit-cost ratio of micro-hybrid stop-start technology is significantly higher than mild or full hybrid systems, so with the industry needing to drastically reduce its carbon emissions there really is every reason to anticipate a more widespread adoption of stop-start systems - providing the technology is up to scratch.”
Modern engine and transmission systems need little modification with the CPT SpeedStart system, which means that it can be introduced across a wide range of vehicle types. The additional benefit of SpeedStart’s high power generating capability means that the maximum advantage can be gained from intelligent regenerative charging during vehicle decelerations.
The SpeedStart system can deliver a 5% reduction in fuel consumption and CO2 emissions over the New European Drive Cycle, but with the potential for even greater savings in real world urban driving situations when many more stop starts can typically be experienced. Unlike other systems whose control strategy will include inhibits that will avoid many potential stop-start events, SpeedStart can be activated more often thereby responding to many more fuel saving opportunities. And unlike existing systems SpeedStart can allow the vehicle to remain in gear when the engine cuts out, which is more natural for the driver and further facilitates a faster restart.
“Only by stopping the engine at every opportunity can the occasionally suggested 15-20% fuel consumption saving in heavy urban traffic be realised,” says Dowsett.
The SpeedStart technology has been optimised for powertrains with gasoline engine displacements up to 3-liters and diesel engines up to 2.5-liters, thereby covering most vehicle segments. To demonstrate the technology CPT has installed its SpeedStart B-ISG system in a Volvo S40 equipped with a 2-liter common rail diesel engine, which it can restart in almost half the time required by a normal starter motor (0 to 750rpm in less than 0.4 seconds against typically 0.75 seconds).
CPT will also demonstrate in a Fiat Punto its VTES (variable torque enhancement system) electric supercharger, which boosts the performance of downsized engines and facilitates the trend to higher gearing. Downsizing or downspeeding is the most cost effective method for CO2 reduction but transient response at the lowest engine speeds may be disappointing and even turbocharged engines can be challenged to deliver the required performance. VTES eliminates any concerns about responsiveness and allows downsizing and downspeeding to be taken further, and the combination of these technologies can reduce fuel consumption by 20% on a like for like performance basis.
“Small engines and higher gearing both reduce fuel consumption and carbon emissions, but drivers must feel confident that they can drive safely within the flow of traffic,” says Nick Pascoe chief executive officer CPT. “Our VTES supercharger can help deliver the required acceleration and driveability and it complements modern turbocharged diesel and gasoline engine technology. An electric supercharger can react instantly to high transient load conditions, delivering up to 25kW of additional power at the crankshaft in less than a second. That’s more than enough to compensate for any turbo lag and considerably more cost effective than adding a 25kW electric motor.”

21 September 2009


Your email address:

Read Latest Issue
International Engine of the Year Awards
Read Latest Issue

Web Exclusive Articles

Volvo details its first climate-neutral facility
Swedish OEM Volvo has highlighted its commitment to reducing the environmental damage caused by vehicle manufacturing as the Skövde engine production site in Sweden becomes the company’s first climate-neutral plant
Read Now

Hyundai 2019 Veloster N: The Knowledge
Designed specifically for the US market and officially unveiled at the 2018 Detroit auto show this month, Hyundai’s 2.0-liter turbocharged Veloster N has been developed to deliver driveability rather than outright performance statistics.
Read Now

Renault Trucks reveals how mixed reality can improve engine quality control
Renault Trucks, in collaboration with Immersion, is evaluating the potential of mixed reality to deliver a new, faster and more reliable quality control process at its Lyon engine manufacturing site.
Read Now

Read Latest Issue

Supplier Spotlight

Supplier SpotlightClick here for listings and information on leading suppliers covering all aspects of the engine technology industry. Want to see your company included? Contact for more details.

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the engine technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email