SEQUENTIAL GEAR SYSTEM
When PPG sets out to design a sequential gear system, it does so with an all-encompassing approach to produce products that offer ultimate performance on every level: from the moment the driver touches the shift-lever, to the delivery of power right through the gearbox.
With a speed of operation usually only found in F1-type applications, PPG’s sequential systems integrate with modern 32-bit ECUs to provide closed loop strategies that are capable of providing sub-70ms gear shifts. This impressive speed of operation gives the PPG system a unique advantage over its competitors, optimising the shift phase to allow the return of power through the transmission as soon as the dog is pre-engaged.
This function can only take place by using the most advanced of measurement sensors available: the KA Sensors rotary position sensor. This state-of-the-art measuring device allows PPG’s sequential gear systems to map and track absolute position of the dog-rings to provide levels of barrel and selector position accuracy that were previously unobtainable. It also supplies next-gear stable calibration tables with precise and repeatable data.
By achieving a seamless shift phase - coupled with low-energy strategies - the PPG system circumvents a requirement for 100% ignition cuts when the gear change is made, meaning that many of the forces that unsettle a chassis during a gear-change operation are eliminated. This results in a far more balanced and predictable handling car and consequently, a better overall performance.
An added bonus of the seamless shifting process by using low-friction, low-mass components, is the reduction of wear and noise - factors that clearly indicate efficient mechanical operation. This also makes gear-shifting effortless, thereby minimising driver fatigue and the eventuality of missed gears if not enough force is applied.