Applied technology Automotive industry Throttle position sensor results in increased vehicle engine power
When Norfolk-based Active Technologies required a better engineered and more robust throttle position sensor for its patented shaft-less throt- tle bodies, it turned to Penny + Giles for a solution.
The shaft-less throttle body is designed to increase the flow of air into naturally-aspirated engines without the need for a turbo or supercharger. A traditional butter- fly throttle body consists of a brass disc mounted through a slotted
B
shaft, which is held in place with two screws. The Active Technologies system removes the shaft, resulting in a 10% increase in air flow and power from the engine, explains the company. This design has helped to elimi- nate turbulence, which can cause pressure to build-up in the housing and restrict the amount of air flow.
During development, Active
Technologies tested numerous throttle position sensors including a non-contact Hall effect sensor, but while the shaft protrusion didn’t offer the ideal solution, it did convince the company that Hall effect was the right way to go. The company discussed the application with Penny + Giles engineers who recommended the
TPS280DP throttle position sensor, which uses a factory pro- grammable Hall effect sensor with two outputs that can be pro- grammed individually for angular range, output range and direction. This has a tested life of more than 60 million operations and, when powered with 5Vdc, has an oper- ating temperature range from -40 to +140˚C. Designed to work in harsh motorsport environments, the sensor has shock and vibration resistance, and its drive and body are IP69K-rated for protection against the ingress of dust, fluids and pressure cleaning. It is also mechanically interchangeable with many existing potentiometer- based throttle sensors using 32mm mounting centres, and is designed to interface with most common
throttle body D type spindles. According to Paul Spinks, managing director, a standard 2.0 litre, naturally-aspirated, Duratec engine leaves the factory with approximately 150bhp. By replac- ing the production system with an Active Technologies throttle body system, the output increases by 30% to 190bhp. The company’s own product demonstrator – a Renault Clio Sport – is fitted with four throttle bodies equipped with the TPS280 sensors, which has increased performance of the stan- dard 150bhp engine to 196bhp. The throttle bodies are cur- rently being rolled out to over forty different engine variants. Penny + Giles Controls T: 01202 409409
www.pennyandgiles.com Rapidly drying components for custom-engineered transmissions
ased in Berkshire, XTRAC is a supplier of custom-engineered transmissions for applications on land, sea and air, with successes in Formula 1 racing applications. As a result, its processes and
practices are always under review. Previously, when machined components were progressing through the various stages of manufacture, they were coated in a heavy, oil-based corrosion preventative, which had to be removed and reapplied after each operation. This was sticky, messy to handle, time consuming and presented health and safety concerns. To overcome these problems, the company introduced VCI bag technology along with an aqueous-based detergent with a rust inhibitor additive which, once applied, leaves only a thin protective film that permits the work piece to be worked on at the next stage of manufacture without having to be removed. With the new system, application and
drying-off take around five minutes, compared to 25 minutes before. With each component passing through an average of ten stages involving rust inhibitor application and removal, some 200 minutes can be saved during the manufacturing process. For the solution, a drying system is used to remove all moisture
from the washed components. This is a specially adapted blower- powered device from Air Control Industries. Called the ‘JetBlack’, it delivers a high volume of clean, filtered air at low pressure which provides rapid effective drying with no dangers to the operative. An additional benefit is the avoidance of transferring corrosion inhibiting ‘tramp oil’ (residual oil) into the coolant tanks, reducing coolant and tool life, as components progress from stage to stage. Air Control Industries T: 0845 5000 501
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ENCLOSURES POWER DISTRIBUTION CLIMATE CONTROL
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