FASTER SHIFTING & REDUCING INSTALLATION COMPLEXITY
The Zytek EGS (Electronic Gearshift System) is the only high-level advanced gearshift system which is purely electro-mechanical.
Used in both competitive and one make series such as the A1 Grand Prix, the EGS units have been used to control over 1.3 million gearshifts a year.
Most commercially available automatic and semi-automatic gear shift systems used in motor racing applications are based on either hydraulic or pneumatic power sources.
The Zytek EGS has been specifically developed to avoid the installation complexity, maintenance requirements and mass associated with pneumatics or hydraulics.
The EGS is capable of individual gear shifts in 25 milliseconds, and up to 5 downshifts in less than a second.
Additionally, the precise control of the electric actuators results in very little wear on the gear selector mechanism and dog rings, which extends gearbox life, improves reliability and shift accuracy.
Gear ratios are set and stored in Non-Volatile memory for downshift over-rev protection of the engine.
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ELECTRONIC GEARSHIFTING SYSTEMS
- EGS, comprising:
- Gearshift Control Unit
- Double-acting Gearshift Actuator
- Steering Wheel Paddles (optional)
- GCU: 185 x 212 x 44 mm (excl connectors)
- SA: 67 dia x 94 mm (excl actuating rod)
- Mass: 2.0 + 1.2 kg (without harness)
- Peak Actuating Force: 1000N
- Peak actuating stroke: ±11.5mm
- Operating Voltage: 12 V
- Individual Shift time: 25ms
- Bulk shift time: 5 in < 1s
- Cooling: None required
- Control: CAN
- Environmental Sealing: GCU – Cabin
INTELLIGENT SHIFTING &
REDUCED GEARBOX WEAR
Faster gearshift systems have reduced wear on gearboxes as a shift is only initiated at a zero torque point on the gearbox. Unlike a hydraulic and pneumatic system, where you are trying to scrape a gear along because it’s being forced to shift permanently.
There is now another direct-acting motor system on the market, but the Zytek system offers more shift force and faster gear shifts, so the Zytek shift system is able to offer some of the fastest power to power on shift times.
A key feature of Zyteks EGS is the automatic shift retry strategy in the event of a failed shift.
To ensure all shifts are successful the system is available with an intelligent actuator; so when the driver sends the shift request, the gearbox control unit does the intelligence work to ensure the shift is successful.
In some configurations, the unit can act as a dumb actuator and the intelligence resides on the ECU which the manufacturer controls. For example the BMW M6 GT3 was equipped with this system (Zytek still undertakes servicing and spares manufacture for those systems).
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FREQUENTLY ASKED QUESTIONS
The electronic shifter stores electrical energy in HV capacitors, and only discharges it to the actuators when torque has been released during an ignition cut prior to a shift.
The system can perform a single gearshift (defined as power on to power on for an upshift) in ~25milliseconds, and is capable of completing 5 shifts in less than 1 second.
Yes, these are all available.
Yes, using one of two methods:
- If the engine has an electronic throttle control – a request can be transmitted over CAN.
- If a cable throttle is used – a throttle blipper can also be supplied.
Using complex strategies included in the EGS ECU.
Alternatively, the EGS ECU can be used as an actuator and gearshift control strategies included in other vehicle-side controllers.