
Penny + Giles, a business group of Curtiss-Wright Controls and designer and manufacturer of high precision sensing technology, is helping gearbox specialist Geartronics to significantly improve the shift times and reliability of its motorsport paddleshift system using Penny + Giles SRH280DP Hall effect rotary sensors.
Commenting on the change to Penny + Giles Hall effect sensor technology, Geartronics managing director Neil Wallace explains: “The strategy to successfully get out of one gear and engage the next as quickly as possible is not just a case of cutting the engine or blipping the throttle for a few milliseconds and hoping for the best!”
Gear up-shifts or down-shifts are essentially a two-stage process - first to disengage the current gear, then to engage the next gear. The times for both processes vary depending on complex dynamic factors acting on the vehicle at the time, which are impossible to model or predict.
The Geartronics 'closed-loop' control system uses a gearbox control unit (GCU) in conjunction with Penny + Giles SRH280DP sensor inputs to modify its own operation - in real-time. In the context of semi-automatic gear selection, the closed-loop system monitors the gear position sensor to determine the precise angular position of the gearbox selector barrel. This information is fed back to the GCU control algorithm so the pneumatic actuator, engine torque reduction or throttle blip can be turned on and off as necessary to effect the fastest and most reliable gear shifts.
Neil emphasises that a closed-loop system is absolutely reliant on receiving accurate feedback from the sensor, so the Penny + Giles SRH280DP Hall effect sensor is effectively the cornerstone of the system.
By contrast, an 'open-loop' system has no feedback mechanism, and simply relies on fixed timers to govern the various shift events. An open-loop system therefore applies the same engine cut or throttle blip duration for every shift, regardless of whether those times are appropriate for each individual shift requirement.
Geartronics’ sequential gearbox shift systems are used in extreme autosport environments such as formula and GT car racing and rallying, and, more recently, have been specified on the Ariel Atom V8 road car. Combining sophisticated electronic control and extremely accurate Penny + Giles rotary sensors, the pneumatic shifter mechanism directly controls the gearbox cam-drum or barrel, and eliminates the requirement for driver operated shift linkages.
A committed user of Penny + Giles SRS280 resistive rotary position sensors for more than nine years, Geartronics began specifying a competitor’s sensors following the introduction of Hall effect technology, but as Neil Wallace explains, they very quickly proved unreliable, were causing numerous problems, and in some applications, were failing within a couple of hours due to the high levels of vibration generated by V8 race engines.
“Fortunately, at around the same time we learned that Penny + Giles had introduced its own hall-effect sensor, the SRH280DP, so we began testing them on our shifter systems and saw an immediate improvement. In fact, when they were installed mid-season on two single-seat V8 racing cars, they proved 100% reliable for the remainder of the season.”
He says that the non-contact technology used in Penny + Giles Hall effect sensors is more reliable as it’s not affected by vibration – an important benefit compared to the wear experienced with resistive contacts, and adds that direct comparison is difficult as Geartronics hasn’t had a Penny + Giles SRH280DP fail.
Penny + Giles provides Geartronics with a mix of standard and bespoke SRH280 sensors including the special, double-output SRH DP versions that can be used to send separate signals to both the GCU and the engine management system (ECU) or data acquisition systems.
Summing up Neil Wallace says that for any semi-automatic shift system to work consistently and reliably under all conditions, the GCU needs, ‘as an absolute minimum’, to measure the gearbox barrel position, throttle position and engine speed, and that’s exactly what the Penny + Giles SRH280DP Hall effect sensors help us to do.
Geartronics provides its sequential gearbox shift systems to winners in a wide range of motorsport disciplines such as British and European Hillclimb Championships, open-wheel ‘formula’ racing, GT & sportscar endurance racing and rallying.
For enthusiasts requiring more information, a YouTube video (Search: Steiner Marcel La Roche 2011) shows an under bonnet view of a system operating real time in a Steiner Motosport Osella FA30.
Penny + Giles’ popular SRH280 contactless rotary position sensors use a factory programmable non-contact Hall effect sensor system. The SRH280P & SRH280DP provide reliable and accurate rotary position measurement in extreme motorsport and industrial environments where shock and vibration can occur. These sensors use the popular 38mm flanged housing with an environmental protection rating to IP68.
SRH280P & SRH280DP operate from either 5Vdc regulated or 9-30Vdc unregulated power supply and are available with analog (0.5 - 4.5Vdc and 0.1 - 4.9Vdc) or digital (PWM) output signals.
The sensor is factory programmable, allowing you to specify the output signal type, the measurement range (0-20° to 0-360° in 1° increments) and the output direction (clockwise or anticlockwise). It has a 12 bit resolution (0.025%) over the selected measuring range, and operates from -40 to +140°C when powered at 5Vdc.
Key Features include contactless Hall effect technology; single or dual output channels; 5Vdc or 9-30Vdc supply; total sensor measurement range from 0-20° to 0-360°; analog or digital (PWM) output; 12 bit resolution over selected measuring range; low noise level (1mVrms) on output signal; operating temperature -40° to +140°C; environmental protection to IP68; crush-proof mounting flange with steel inserts, and rapid availability.
Advanced Insulation (www.aisplc.com)
Since its formation in 2007, Advanced Insulation has become a single source provider for insulation and fire protection systems to the oil and gas industry, and represents one of the most respected and progressive names in topside and subsea insulation worldwide.
Advanced Insulation offers a wide range of products to meet the growing demand for fire protection and thermal insulation systems adaptable for elevated service temperatures and pressures.
AL-KO Kober (www.al-ko-co.uk)
Since 1931, AL-KO Kober has been manufacturing premium, high quality components used in the Automotive, Commercial and Leisure industry.
The extensive range of chassis components, premium accessories and spare parts are engineered to last, ensuring whatever product you have purchased, you will benefit from the generations of development and enjoy a lifetime of service.
Arc Energy Resources (www.arcenergy.co.uk)
Arc Energy Resources is one of the UK’s leading specialists in weld overlay cladding and fabrication for the oil & gas industry. The company’s expertise provides protection against corrosion and wear for a variety of process and pipeline equipment for use in any hostile environment.
The company recently made a major investment in two new Rotating Head welding machines costing £500,000. This has increased productivity and extended the size and scope of work it can handle, which now includes complicated component geometries for the full or partial cladding and fabrication of a huge range of component sizes weighing up to 15 tonnes. The company’s in-house designed cladding workstations feature state-of-the-art control systems developed to suit its customer’s specialised engineering requirements, and can clad bores up to four metres diameter and areas of restricted access within bores as small as 20mm diameter. Arc Energy also offers in-house test weld, heat treatment, PMI and NDT facilities.
Industry certifications include ISO 9001:2008 quality management, ISO 3834-2 fusion welding of metallic materials, and the internationally renowned ASME U and R Stamps, as well as ISO 14001:2004 environment management, Investors in People and OHSAS 18001:2007 Health & Safety management system.
Curtiss-Wright Industrial Group, which includes the legacy brands of Arens Controls, Penny & Giles, PG Drives Technology and Williams Controls, is a recognized leader in providing components and sub-systems which enable customer specific solutions for on- and off-highway vehicles. These include medium- and heavy-duty trucks, buses and motor coaches, construction and agricultural vehicles, materials handling, and other specialty vehicles, as well as sophisticated wheelchairs and scooters for medical mobility.
We are a leading provider of electronic throttle controls, transmission shifters and sensors for commercial off-highway equipment and heavy trucks, so helping to address the long-term trend towards attaining higher fuel efficiency and lower emissions. We also supply operator controls and advanced motor controllers for hybrid and electric vehicles, such as buses, forklift trucks, pallet stackers, wheelchairs and rehabilitation chairs.
With a proud legacy spanning more than 85 years, Curtiss-Wright is a global innovative company that delivers highly-engineered, critical-function products and services to the commercial, industrial, defense and energy markets. Building on the heritage of Glenn Curtiss and the Wright brothers, we have a long tradition of providing reliable solutions through trusted customer relationships.
Further information is available from the Curtiss-Wright Industrial website (www.cw-industrialgroup.com) or by calling +44 (0)1202 034000.
Euchner (UK) Limited (www.euchner.co.uk)
Safety for people, machines and products has been the maxim of this family-owned company since 1953. Stefan Euchner is the third generation to take the helm.
As specialists in industrial safety engineering, Euchner develops and manufactures products and solutions tailored to the requirements of customers from a wide range of sectors. Using its guards on machines and installations helps to minimise hazards and risks, which in turn protects people and processes. For its 800 employees around the world, safety is the watchword.
Further information is available from the Euchner (UK) Limited website (www.euchner.co.uk) or by calling +44 (0)114 256 0123.
Industry Superstore (www.industrysuperstore.co.uk)
Industry Superstore is a one-stop-shop for a wealth of budget-friendly, high-quality products tailored to industry!
Further information is available from the Industry Superstore website (www.industrysuperstore.co.uk) or by calling +44 (0)1892 664499.
Exmac Automation Limited has many years experience in the design, manufacture, and installation of unit conveyors, conveyor systems and associated materials handling equipment for most industry sectors.
Exmac Automation is part of the MacDonald Humfrey group of companies and are market leaders in the supply of automated materials handling equipment to the automotive, aerospace, white goods, warehouse & distribution, nuclear, pharmaceutical and food & beverage industries.
The group supplies to most industry sectors and have over 250 employees with many years experience in the design, manufacture and installation of unit conveyors, conveyor systems and associated materials handling equipment.
Projects have ranged from individual standard conveyors and bespoke handling applications, through to complete turnkey contracts involving conceptual and process design, installation and commissioning.
We are ISO 9001 accredited and constantly strive to achieve continuous improvements in the overall quality of our products and service.
Exmac Automation has has established a reputation for supplying high quality, robust systems at competitive prices.
In-house resources enable us to provide clients with a single source for complete systems integration including simulation, engineering, machining, fabrication, assembly, controls, installation & commissioning and after sales service.
Our 70,000 sq ft facility in Worcester has extensive design, manufacturing and assembly resources. Our skilled team of customer focussed automation professionals offers a broad base of knowledge and experience in a wide variety of industries.
A large workshop enables us to carry out comprehensive pre-installation assembly and factory acceptance tests on all projects.
Fulton Limited (www.fulton.co.uk)
The Fulton name has been synonymous with steam since the company first introduced the vertical tubeless steam boiler in 1949 and Fulton was established in Bristol in 1966. Fulton is still one of the world’s leading manufacturers, producing an unrivalled range of multi-fuel steam boilers. But increasingly these are ordered by customers as part of bespoke turnkey systems designed to meet exacting specifications.
Today Fulton Limited is an important design and manufacturing base in Fulton’s global network that also includes production facilities in the USA and China. The company’s UK facility makes it possible to manufacture products more efficiently and assemble completed units for whenever and wherever they are needed throughout the UK and in export markets.
Once just a steam boiler manufacturer, Fulton now specialises in ready-to-ship skid mounted and fully packaged boiler plant rooms to meet the current demand for off-site fabrication. The company puts great emphasis in providing sales and application advice and a full commissioning and after sales service to a growing customer base in hospital and healthcare facilities, food and beverage processing, laundries and other applications.
Design and manufacturing resources are shared and coordinated around the world, but no matter where your product originates, it will always be produced to the highest quality in a facility that is wholly owned and managed by the Fulton Group, which remains a privately owned family business.
Fulton’s heating and hot water systems can be delivered as fully prefabricated plant rooms or complete skid-mounted units, built to fit a prepared location and connect direct to your services.
Using the latest CAD equipment its design team can accommodate the most sophisticated engineering specifications in surprisingly compact spaces, locating components in the best possible position to suit the installation.
In every sense, today’s Fulton boiler systems are solutions that fit the requirements of the modern age of steam.
Gast Group (www.gastmfg.com / www.jun-air.com)
Since 1921, Gast Manufacturing, Inc. has been designing and manufacturing quality air-moving products. Our vacuum pumps, compressors, air motors, gear motors, vacuum generators, regenerative blowers and Smart Air technology meet the many challenging applications of OEMs and end-users worldwide.
For industrial manufacturing, health care lab, or environmental cleanup applications, Gast provides a full range of ideally suited and cost-effective solutions to any pneumatic problem.
Monodraught (www.monodraught.com)
In the current climate of soaring energy prices and the fear of global warming, increasing attention is being focused on Monodraught’s range of energy-free products.
Monodraught has always sought to invent, explore and develop innovative technologies that harness the wind and sun. Products include Windcatchers, Sunpipes, Suncatchers, Sola-vents, Sola-boosts and Cool-phase.
Nexen Lift Trucks (www.nexenlifttrucks.com)
Disillusioned with the ever-increasing complexity of new forklift trucks and the failure of the major manufacturers to provide a high level of support to their dealer networks, the decision was taken to develop its own range of forklifts.
In 2003 Nexen Lift Trucks was established with the vision to design and manufacture its own range with a combined 70 years experience of the lift truck rental industry. Nexen's ultimate goal is to build worldwide brand recognition based on its product's design and build quality as well as outstanding reliability at competitive prices.
In 2007 Nexen completed the purchase of the second largest lift truck manufacturer in Taiwan, creating the Nexen Motor Corporation. Initially the existing models were improved whilst a European based design team was established to develop a completely new range of trucks from the ground up to meet Nexen's standards.
Q8Oils (www.Q8Oils.co.uk / @Q8OilsUK)
Q8Oils has become a major player in the global lubricants market. Our success is founded on significant corporate resources, a commitment to product development and uncompromising standards of quality and service.
Q8Oils has a unique and innovative approach producing some of the world´s finest quality lubricants. Manufactured in its state of the art plant at Leeds, West Yorkshire, Q8Oils represent the very best and latest in lubricant technology. With over 1000 grades of finished lubricants, base oils, process oils, extracts and waxes.
We are dedicated to serving the needs of our customers by striving to understand, anticipate and satisfy their needs faster and better than our competitors. To achieve this our objective is to develop and supply products and services which reflect customer demands in each of our market sectors.
TLV Euro Engineering (www.tlv.co.uk)
TLV Euro Engineering UK is part of TLV, an internationally-established designer, manufacturer and provider of steam traps, condensate recovery pumps, pressure reducing valves and other specialist steam solutions. The company plays a leading role in the promotion of efficient energy systems and increased environmental conservation on a worldwide scale through its products and consulting and engineering services.
Rockatek (www.rockatek.com)
Cheltenham-based Rockatek Ltd is an engineering consultancy that offers design, analysis and physical testing services that set it apart from others. Its directors have over 40 years’ experience in complex engineering product optimisation and development; and its engineers specialise in engineering solutions for harsh environments and value improving reliability and performance.
Verco (www.ver.co.uk)
Founded in 1965, Verco quickly built a reputation for supplying quality refrigerated glass door and open chill cabinets to supermarkets, convenience and forecourt stores. Verco is now a leading supplier of retail refrigeration and the largest UK manufacturer of glass door cabinets.
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