VDO Accelerator Pedals Brochure.pdf - Howard Instruments

Pedals – flexible and durableThe right solution for almostevery applicationMechatronics for the most demanding conditionsOur portfolio includes pedal solutions for floor installationas well as suspended pedals, but also designswhere pedals and external mechanics/sensor systemsmust be placed separately because of space requirements.We supply hand throttle solutions for specialapplications, such as agriculture.Functionally reliable and ergonomicAll our pedals designed for use with commercial andspecial-purpose vehicles work according to the same,extremely robust, principle: Contactless and non-wearingHall-Sensor systems convert each respective pedalposition into an electric signal, which is forwarded toengine controls and where it displays the driver’storque requirements as the target value.High degree of flexibilitySince our pedal solutions are based on modular components,they can be easily adapted to a respectiveapplication, while at the same time offering the highquality standard of generically developed products.Pedal designs currently in use for floor installationinclude 31 °, 39 ° or 45 ° pedal angles and 17.5 ° delayangles.The flexibility offered by our solutions is also evident atthe respective signal output: Generally speaking, theintegrated electronics can make available both analoguesignals as well as digital (pulse width modulated)PWM signals. Conventional interfaces which are in useworldwide can be used for connections to enginecontrols. Of course we also implement customer-specificsolutions in addition to our standard connectors.In addition to mechanical durability, the quality featuresof our pedals also include redundant design for bothreturn springs and the redundancy principle at the signaloutput on two channels (in accordance with theengine management specification). Depending on thedesign, pedals may be designed with an additionalpressure point for a kick-down to full throttle, whichtriggers a targeted gear change for automatic transmissions.In order to provide the driver with optimum vehiclecontrol even during jerky movements, the pedal is alsofitted with a hysteresis function.Current pedal solution with separate sensor system andmechanics: type AA1Current floor pedal, type FMPPedals with suspended design, optionally available withaluminium lever (type SPM) or plastic lever (short design,type SPPS and long design, type SPPL)Pedal angle sensor unit with sensor, type HS16 7

Pedals – innovativeContinues improvement –next generationNew pedals: 2009 evolution levelWe are targeting our long-standing experience in developmentand applications for a preparation of a newgeneration of standard pedals with a modular design forseries production. The new designs are even moreoptimised for production than before and thus open upeconomic advantages. At the same time we use Hall-Sensors with a further developed design (HS2) for thenew generation pedals, which feature a much simplerdesign and also offer additional technical advantages.This includes an even better electromagnetic compatibility(EMV/EMC). In order to provide our customer withinvestment security, we can also fit the new sensorsfor CAN bus protocols on request.New sensor designThe contactless HS2 sensor has a molded 6-poleconnector (Delphi Packard Metri Pack 150). Startingoptions include analogue single plus idle validationswitch, double analogy as well as the single or doubledigital (PWM). In addition to standard voltages of 5 volt,the sensor is also available on request at up to 48volt supply voltage, making it suitable for use in electrically-operatedindustrial vehicles.Equivalent StressType: Equivalent StressUnit: MPa1535,5 Max.1228,4921,32614,22307,130,02749 Min.Min.Max.Prototype of the new FMPnew pedal for floor installation.In the development stage, Finite Element Analysis (FEA) wasused to ensure the durability of the step plate.New HS2 Hall-Sensor with optimised EMV properties for thenew pedal designsThe very successful validation of the new sensors inconnection with the new pedals already includes alot of know-how. Results confirm a technologically andeconomically convincing solutions range, which isjust as diverse and robust as the current generation –with increased flexibility.8 9

Pedals – innovativeDesign and measurements of suspended pedalsNew hand throttle solution for use with agricultural machinery,among othersFMPnew pedal for floor installationCustomer-specific solutions tractor pedal AP1 (illustration toleft) and underfloor mounted UP1 pedal (illustration to right)for industrial vehiclesSuspended pedalsHand throttle and special sensor solutionsFloor mounted pedalsCustomer-specific solutionsA standard design for applications using suspendedmounted pedals is now at an advanced developmentstage; it can be combined with customer-specific levers.The new optimised HS2 sensor is also used for the“SPnew” generation.The new special solutions offers additional applicationpossibilities: Thus two new hand throttle solutions areavailable which can be operated either by lever (HT2)or by turn-switch (HT3). Vehicle manufacturers canobtain the new externally installed sensor operations(type AA2 and AA3) in order to adapt their own pedals.The new design for floor mounted installation consistsof a glass fibre filled nylon base, that allows for theimplementation of up to five pedal angles (30 ° to 50 °)in 5 ° increments in one single component. The associatedstep plate with a operating angle of 20 ° may bemade of plastic (PA66 with 33 % GF) or aluminium,depending on customer requirements. Compared tothe current design, the new “FMPnew” generation iseasier to install. At the same time its design quality isalso very suitable for driver cabins that feature a visuallydemanding design.A special tractor pedal (AP1) to be used in tractorcabins (e.g., on agricultural tractors or backhoes) is currentlyin the development stage; with its flexible leverdesign it can be easily adapted to a number of differentinstallation conditions.A solution involving the installation of the pedal in thecabin floor, with sensor systems/mechanics placedbelow, is currently in the preparation stage (type UP1).10 11