Paper on testing of slip-control braking sytsem published by the Journal of Automobile Engineering:
Henderson, L. and Cebon, D. ‘Full-scale testing of a novel slip control braking system for heavy vehicles’, IMechE, Part D: Journal of Automobile Engineering, 22 Jan, 2015. Accepted 7/8/2015. Published online before print: http://pid.sagepub.com/content/early/2015/09/22/0954407015604804.full.pdf
Follow this link for other recent publications from the CVDC
The CVDC's slip-control braking system has been featured on the BBC. Richard Westcott, the BBC's Transport Correspondent filmed the system during braking tests at the MIRA proving ground in Nuneaton on 15th May 2015.
In back-to-back tests, the stopping distance for the CVDC slip-control system was 19% less than for the conventional ABS. This is very close to the theoretically shortest possible distance with these particular tyres.
The BBC's news article and video segment can be seen at:
CVDC Member, Tridec BV has announced the release of its first path-following trailer axle steering system. The electronically-controlled hydraulic system was developed in collaboration with CVDC researchers and uses the CVDC's steering control algorithms. The rear doors of the trailer perfectly track the path of the fifth-wheel for any manoeuvre.
The Mechanics of Heavy Duty Trucks and Truck Combinations - A Four Day Professional Development Course: 7-10 July, 2014
The team was led by Leon Henderson and the work was performed in collaboration with Haldex Brake Products Ltd. The CVDC's tri-axle semitrailer was fitted with the new system and tested on a range of low friction surfaces at the MIRA vehicle testing facility near Nuneaton, UK. The measurements compared the emergency braking performance of the CVDC’s slip control braking system and a commercially available antilock braking system (ABS) for heavy goods vehicle (HGVs). Results showed that stopping distances could, on average, be reduced by 16% using the new system. Air use was also reduced by 50%; providing scope to potentially use smaller air reservoirs on HGVs. A short video showing the emergency braking performance of the two systems’ on a surface with friction properties similar to ice can be seen on Youtube (https://www.youtube.com/watch?v=9HYMrfERIAA). Further HGV braking trials using the new system are being planned for 2014, when it is hoped to obtain even better stopping performance. More information about the technology can be found at: http://www-cvdc.eng.cam.ac.uk/directory/research-themes/investigation-of-abs-strategies-for-heavy-vehicles
The cover story of the February 2013 issue of Transport Engineer features the CVDC's advanced vehicle braking technology. Read the article here.
ABD produce advanced testing systems for the global motor industry for a wide range of applications. Their products include steering robots and suspension measurement rigs, to name a few.
Professor David Cebon, Director of the CVDC said "ABD are leading suppliers of advanced testing systems for the motor industry. They will be a huge asset to the consortium"
As part of their associate membership, the CVDC has a acquired an SR30 steering robot which will be used for testing in a variety of research projects.
During the September 2012 Consortium meeting in Gothenburg, Sweden, the CVDC was presented with a new FH12 tractor unit by the hosts, Volvo Trucks.
On receiving the new tractor unit, Professor David Cebon, Director of CVDC, remarked: "The type of work we do in the CVDC is critically dependent on having the capability to do full scale testing of heavy vehicles. We are indebted to Volvo for their generous gift which will allow us to continue this work for the foreseeable future."
The Volvo tractor unit was shipped to its new home near Cambridge in early November, where the research team has begun instrumenting and equipping it for its new role as research work-horse.
Volvo Trucks has been a key member of the CVDC since 1996, and donated a red FH12 tractor unit in 2000. In its more than 10 years’ service, the red tractor has played a pivotal role in many of the CVDC’s research projects, including semi-active suspension; active roll control; and active trailer steering. Currently, researchers in the CVDC are investigating a number of aspects for heavy goods vehicles, innovating in: advanced ABS systems, regenerative braking, autonomous reversing, accident avoidance and use of long combination vehicles off-highway. The new truck will be pressed into service on all of these projects. The overall aim is to make heavy goods vehicles safer, more economical, and more fuel efficient.
Wincanton is a British logistics company which is a leading provider of supply chain solutions, with more than 16,00 logistics experts at 250 sites across the UK and Ireland.
Professor David Cebon, Director of the CVDC said "With over 80 years of experience and more than 4,000 vehicles, Wincanton makes a great addition to the CVDC. Logistics is a growing area of research for the CVDC, and Wincanton's support will be important for these projects."
Originally a Northern Ireland based company; SDC has expanded to become one of the leading trailer manufacturers in Europe with over 30 years of experience in the industry.
Professor David Cebon, Director of the CVDC said “SDC is a key missing piece in the CVDC puzzle. Trailers form a huge part of our research and the expertise of such a prominent trailer manufacturer will prove invaluable in future projects."
Leon Henderson presented his latest work titled ‘Design and implementation of a high-bandwidth pneumatic actuator for heavy vehicle slip control’ at EuroBrake 2012 in Dresden. The three day conference was attended by over 600 delegates from the braking industry and also included a tour of Volkswagen’s Transparent Factory.
Poclain Hydraulics Headquarters, Verberie, France 14/09/2011
The CVDC held its September meeting at the headquarters of Poclain Hydraulics, one of the newest members of the Consortium. This was also the first meeting for Tridec, another new member to the consortium.
The University researchers presented their work over the last six months encompassing areas such as whole life pavement modelling, vulnerable road users, advanced ABS and regenerative braking. Future research directions were also discussed, and possible future projects were suggested.
During a break in the proceedings Poclain demonstrated various display vehicles to the members as well as giving a tour of their extensive laboratory facilities.
The full day's proceedings are available to the consortium members via the Members section of the website.
Will Midgley, a PhD student working with the CVDC, attended the biennial Vehicle Power and Propulsion Conference in Chicago, USA. VPPC 2011 was sponsored by the IEEE and was a four day showcase of leading-edge research into vehicle power and alternative drivetrains, with plenary speakers and presenters from around the world.
Will's presentation was titled 'Specifying a Hydraulic Regenerative Braking System for an Articulated Urban Delivery Vehicle', and was well-received by the attendees.
Leon Henderson, a PhD student working with the CVDC, recently attended the biennial IAVSD symposium in Manchester. IAVSD 2011 lasted five days and was attended by over 260 delegates from around the world. A range of conference papers and posters were presented relating to vehicle dynamics on road and tracks. Leon's presentation was titled "The Effects of Tyre Dynamics on Slip-Control Braking for HGVs". As well as presentation sessions, the conference included a reception at the Museum of Science and Technology, a day trip to Bentley Motors production facilities in Crewe and a formal banquet at the Manchester Town Hall.
The CVDC is pleased to announce that Tridec B.V. has joined the Consortium. Tridec is a world leader in development and manufacturing of mechanical and hydraulic steering systems and axle suspensions for all types of trailers.
David Cebon, Director of the CVDC said "We are delighted that Tridec has joined Team-CVDC. Their vast experience in manufacture of steerable axles is complementary to CVDC's work on active steering. We look forward to researching a range of innovative technologies together."
Cambridge, UK and Verberie, France 01/03/2011
Poclain brings 30 years of hydraulics experience in the development of innovative hydraulic motors for heavy-vehicle and agricultural applications. Poclain’s recent work on the French hybrid Irisbus project will make them an invaluable contributor to the hybrid vehicle/energy efficiency research that CVDC is undertaking. “Improving the energy efficiency of freight transport is a vital waypoint on the road to a sustainable economy,” said Professor David Cebon, Director of the CVDC. “Poclain Hydraulics brings a demonstrated commitment to hybrid vehicle research with the practical experience to see ideas translated into results.”
Poclain is a worldwide leader in the design and manufacture of hydrostatic transmissions with integrated cam lobe motors. From its headquarters in Verberie, France, Poclain manages a sales and manufacturing team of over 1500 people. Poclain has factories in France, the USA, the Czech Republic, Slovenia, India, and Italy, which distribute through a global network of over 150 distributors.
For more on Poclain, visit their website (http://www.poclain-hydraulics.com/). For further information on the CVDC, contact Professor David Cebon (email@example.com) or visit the CVDC website (http://www.cvdc.org).
The CVDC has upgraded its website to make the website easier to use, and easier to navigate. The website uses the new Falcon system administered by the University, and supports content management and also provides an RSS feed, to make it easier to keep up-to-date with the CVDC's cutting-edge research.
The CVDC are pleased to announce Professor Brian Collins, Chief Scientific Adviser to the UK Department of Transport, as the opening speaker for the upcoming Technology Showcase 2010.
The CVDC is pleased to present a one-day event at MIRA, Nuneaton, UK. Do not miss a unique opportunity to see first-hand the recent advancements in heavy vehicle technology developed by the CVDC. The Technology Showcase will feature exhibits, vehicle demonstrations, project updates and panel discussions relating to heavy goods vehicles and the future of long-combination-vehicles in the UK and Europe. Vehicle demonstrations will include the CVDC’s own actively steered B-Double and Denby Transport Ltd’s ‘Eco-Link’ concept vehicle. New technologies will also be on display from Firestone Industrial Products, Haldex, Arvin Meritor, SimPack, Volvo and Goodyear. Tickets to the event are strictly limited and early registration is highly recommended.